Home

Keithley DMM - Instrumentation LAB

1. Keys menus and selection Description SAVE DATA Save the current settings as the power on state Only the primary and secondary measurement function range resolution and math functions are saved Refer to Selecting the initial operating mode on page 2 22 for details SYSTEM VERSION Display system version Refer to Viewing system version on page 2 24 for details INSTRUMENT INFO Display instrument manufacturer and model number SERIAL Display instrument serial number DISPLAY Access display settings Refer to Turning off measurement display on page 2 20 for details ON Turn display on OFF Turn display off BEEP Access beeper settings Refer to Turning the beeper off or on on page 2 21 for details ON Turn beeper on OFF Turn beeper off SELF TEST Perform a self test and display results Refer to Running a self test on page 6 2 for details LANGUAGE Access remote command language settings Refer to Selecting the language on page 2 23 for details DEFAULT Set default language The default language is Model 2110 SCPI COMPATIBLE Set to SCPl compliant DMM language mode INTERFACE Select communication interface Refer to Rear panel connection details on page 2 19 USB Access USB settings ON Select USB OFF Disable USB GPIB ADDRESS Enter or change GPIB address CALIBRATION Select calibration settings Refer to Viewing calibration information on page 2 24 CAL COUNT V
2. Parameters lt n gt description value Select the CX coefficient for the SPRTD sensor MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature SPRTD CX Query the sensor CX coefficient SENSe TEMPerature SPRTD CX MIN Query the minimum sensor CX coefficient SENSe TEMPerature SPRTD CX MAX Query the maximum sensor CX coefficient Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about the CX coefficient RTD coefficients and temperature calculation on page 3 19 SENSe TEMPerature SPRTD DX lt n gt MIN MAX Use this command to set the DX coefficient for the SPRTD sensor Parameters lt n gt description value Select the DX coefficient for the SPRTD sensor MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature SPRID DX Query the sensor DX coefficient SENSe TEMPerature SPRID DX MIN Query the minimum sensor DX coefficient SENSe TEMPerature SPRID DX MAX Query the maximum sensor DX coefficient Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about the DX coefficient RTD coefficients and temperature calculation on page 3 19 5 60 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Refere
3. TC INPUT SENSE INPUT TC INPUT SENSE INPUT aw vo s t 04w vait A a QA E MAX sov MAX At CAT I 1000V CATI 600v 1 Measure Measure current up to current up to 10A 3A 2110 901 01 Rev A July 2012 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to select the function DCI or ACI set a measure range and perform a measurement FUNCtion CURRent DC Select the DCI function FUNCtion CURRent AC Select the ACI function CURRent DC RANGe lt n gt Set the DCI range CURRent AC RANGe lt n gt Set the ACI range lt n gt 10to10 Expected DCI reading 0to 10 Expected ACI reading CURRent DC RANGe AUTO lt b gt Enable or disable autorange for DCI CURRent AC RANGe AUTO lt b gt Enable or disable autorange for ACI lt b gt 0 or OFF Disable autorange 1 or ON Enable autorange READ Perform the measurement and acquire reading Measurement configuration commands can also be used to perform measurements Use the following commands to select a function DCI or ACI set the measure range set measurement resolution perform a measurement and acquire the reading MEASure CURRent DC lt range gt lt resolution gt MEASure CURRent AC
4. TRIGGER AUTO HOLD STORE RECALL Press TRIGGER AUTO HOLD to toggle the reading hold function on and off After turning it on you can also adjust the reading hold sensitivity band using A and YW keys Refer to Reading hold on page 3 36 for details Press STORE RECALL to view the number of stored readings Refer to Data buffer on page 3 37 for details DIGITS FILTER OFF MOVING AVERAGE RUN READINGS REPEAT AVERAGE Press DIGITS FILTER to select the type of filter for the measurement on the selected function or to turn the filter off Use gt and lt keys to display additional selections Refer to Digital filter on page 3 45 for details about moving average and repeat average Turn the filter off Select to configure MOVING AVERAGE Use gt and lt keys to display additional selections Select RUN to start the function Enter the number of readings using A V gt lt keys Select to configure REPEAT AVERAGE Use gt and lt keys to display additional selections 2110 901 01 Rev A July 2012 RUN Select RUN to start the function READINGS Enter the number of readings using A V gt lt keys NULL MATH Press NULL MATH to select the mathematical operation Use gt and lt keys to display additional selections Refer to Math operations on page 3 47 for details 2 15 Section 2 General overview Model 2110 5 Digit Multimeter Reference M
5. Trigger command Sends a bus trigger to the instrument 2110 901 01 Rev A July 2012 5 5 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual Common command reference This topic provides a detailed reference for all common commands CLS clear status This command clears the Status Byte Summary Register and all event registers ESE lt NRf gt event enable command This command enables bits in the Standard Event Enable Register The selected bits are then reported to the Status Byte Usage Details Use the ESE command and the appropriate decimal value for each bit to set the enable register mask Refer to Standard Event Register on page B 9 for information about values For example enable operation complete by using the ESE 1 command ESE event enable query This query command queries the Standard Event Enable Register Usage Details The instrument returns a decimal value that corresponds to the binary weighted sum of all bits set in the register Refer to Standard Event Register on page B 9 for information about values ESR event status register query This query command queries the value of the Standard Event Status Register This query command clears the Standard Event Register Usage ESR Details The instrument returns a decimal value that corresponds to the binary weighted sum o
6. 6 AC coupled RMS V 1 x 1 5 CF CF RMS Vewn 0 557 Jp Crest Factor CF Crest Factor 1 y DI2 CF Crest Factor CF 1 Crest Factor CF 2 Crest Factor t Crest Factor GF 1733 The Model 2110 is an AC coupled RMS instrument For an AC waveform with DC content the DC component is removed before the RMS is calculated 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 4 Theory of operation Crest factor is a relative measurement of the harmonic content of a particular waveform and reflects the accuracy of the measurement For a rectangular pulse train the higher the crest factor the higher the harmonic content of the waveform This is not always true when making spectral comparisons between different types of waveforms A sine wave for example has a crest factor of 1 414 anda square wave has a crest factor of 1 The sine wave has a single spectral component and the square wave has components at all odd harmonics of the fundamental Additional error uncertainties are also specified for non sinusoidal waveforms of specific crest factors and frequencies DMM resistance measurement methods The Model 2110 uses the constant current method to measure resistance The constant current method sources a constant current Isour to the device under test DUT and measures the voltage Vmeas Resistance Rpur is then calculated and displayed using the k
7. This command displays text on the secondary display second line of the front panel display Parameters lt a gt description A maximum of any 16 String parameters can contain virtually any set of ASCII characters A string ASCII characters must begin and end with matching quotes either with a single quote or with a double quote You can include the quote delimiter as part of the string by typing it twice without any characters in between Query command description DISPlay TEXT Query the message sent to the front panel display Details The message can be up to 16 characters any additional characters will be truncated Example DISPlay TEXT Hello World 1234 Displays the string you type in DISPlay TEXT CLEar This command clears text messages from the secondary display Parameters command description DISPlay Text CLEar Clears the message Example DISPlay TEXT CLEar Clears the message INPut subsystem The command in the INPut subsystem is used to configure and control the measurement units for TEMP ACV and DCV 2110 901 01 Rev A July 2012 5 35 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual INPut MPedance AUTO lt b gt This command turns the automatic input resistance mode on or off for DC voltage measurements With AUTO ON the input resistance is set to gt 10 GQ for the 100mV 1V and 10V ranges With AUTO OFF the input resistance is fixed a
8. Select 100 NPLC Select the minimum value Select the maximum value Tage DC NPLCycles Tage DC NPLCycles MIN Tage DC NPLCycles MAX description Query the NPLCycles Query the minimum value Query the maximum value Refer to Integration time and resolution for DC and resistance measurements on page 3 41 more information abo ut NPLC 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe VOLTage DC RESolution lt n gt MIN MAX Use this command to select resolution for DC voltage measurements DCV Parameters lt n gt description 3 00e 07 to 3 00e 04 DCV range Select the resolution of the measurement MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe VOLTage DC RESolution Query the measurement range SENSe VOLTage DC RESolution MIN Query the minimum range SENSe VOLTage DC RESolution MAX Query the maximum range Details Refer to Integration time and resolution for DC and resistance measurements on page 3 41 more information about resolution SENSe ZERO AUTO lt name gt Use this command to turn autozero mode on on once and off The OFF and ONCE have a similar effect OFF mode does not issue a new offset measurement until the multimeter goes to the WAIT FOR TRIGGER state Parameters lt name gt descriptio
9. This section describes aspects of the front panel that are part of GPIB operation including messages status indicators and the LOCAL key Error and status messages The front panel display may show error and status messages Local key The SHIFT LOCAL key cancels the remote state and restores local operation of the instrument GPIB reference General bus commands General commands are commands that have the same general meaning regardless of the instrument for example DCL The following table lists the general bus commands 2110 901 01 Rev A July 2012 C 9 Appendix C Communication interface Model 2110 51 Digit Multimeter Reference Manual General bus commands Command Effect on Model 2110 REN Goes into remote operation when next addressed to listen See REN on page C 10 for details IFC Goes into talker and listener idle states See IFC on page C 10 for details LLO LOCAL key locked out See LLO on page C 10 for details GTL Cancel remote restore Model 2110 front panel operation See GTL on page C 10 for details DCL Returns the Model 2110 and all devices on the GPIB to known conditions See DCL on page C 11 for details SDC Returns the Model 2110 to known conditions See SDC for details GET Initiates a trigger See GET on page C 11 for details SPE SPD Serial polls the Model 2110 See SPE SPD on page C 11 for details REN The remote enable REN command is sent to the Model 2110 by th
10. 1 Press DCV to select the DC voltage function 2 Select a measurement range auto or manual for the input signal e Autorange is the power on default If manual ranging is selected MAN indicator on press SHIFT and then ESC AUTO to select autorange e For manual ranging press the RANGE A and Y keys to select a measurement range 3 As shown below connect the input and reference signals to the instrument a Connect the DC input signal to the INPUT HI and LO terminals b Connect the reference signal to the SENSE HI and LO terminals c Connect the SENSE LO terminal to the INPUT LO terminal 4 Press CONFIG and use the lt and gt keys to display RATIO and then press ENTER RAT indicator turns on 5 Observe the ratio reading on the display To disable ratio press any function key 3 4 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Connections for ratio measurements Figure 17 Connections for ratio measurements Reference Signal Input resistance 10 MQ on 1000 V 100 V ranges gt 10 GO on 10 V 1 V 100 mv ranges Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to select the ratio function set a measurement range and perform a calculation FUNCtion VOLTage DC RATio Se
11. CONT Selects the continuity test TEMP Selects RTD temperature measurement ENTER Accepts selection moving to next choice or back to measurement display DCI Selects DC current measurement ACI Selects AC current measurement Q4 Selects 4 wire resistance measurement dk Selects capacitance measurement gt Selects diode test TCOUPL Selects thermocouple temperature measurement 2ND Sets secondary measurement TRIGGER Manually triggers the instrument to make measurements or sets the instrument to take external triggers STORE Stores a specified number of subsequent readings DIGITS Changes display resolution NULL Activates the null function in order to offset the measurement error due to the test leads SHIFT Used to access shifted functions printed in blue over each key CONFIG Configures the settings of selected measurement function Refer to the topics in Basic_ measurement functions on page 3 1 for configuration details ESC Cancels selection moving back to measurement display AUTO HOLD Enables or disables the reading hold function RECALL Displays stored readings FILTER Enables or disables averaging digital filter MATH Enables or disables mathematical operations tests including PERCENT AVERAGE NULL LIMITS MX B dB and dBm LOCAL Switches the instrument to the local mode from the USB or GPIB remote mode MENU Offers system wide settings trigger settings interface configurations and calibration information
12. Select the minimum value Select the maximum value ESistance NPLCycles ESistance NPLCycles MIN ESistance NPLCycles MAX description Query the NPLCycles Query the minimum value Query the maximum value Refer to Integration time and resolution for DC and resistance measurements on page 3 41 more information about resolution SENSe TCOuple RJUNction REAL lt n gt MIN MAX Use this command to select the offset voltage of the real reference junction Parameters lt n gt description 100 to 100 Select the offset voltage value of the real reference junction MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TCOuple RJUNction REAL Query the offset voltage of the real reference junction Details Refer to the Temperature measurement on page 3 17 section for more information about offset value 5 52 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe TCOuple RJUNCction RSELect lt name gt Use this command to select a reference junction type real or simulated Parameters lt name gt description REAL Select a real reference junction type SIMulated Select a simulated reference junction type Query command description SENSe TCOuple RJUNction RSELect Query the reference junction type real or simulated Details Refer to Thermocouple meas
13. You can mix upper and lowercase letters Query responses will always return the short form in all uppercase letters The following command uses discrete parameters TRIGger SOURce BUS IMMediate EXTernal Numeric representation format parameters lt NRf gt Numeric representation format parameters are numbers that can be expressed as an integer e g 8 a real number e g 23 6 or an exponent 2 3E6 The following command uses a numeric parameter CALCulate PERCent TARGET 100e6 Boolean parameters lt b gt Boolean parameters are used to enable or disable an instrument operation 0 or OFF disables the operation and 1 or ON enables the operation For example use the ON parameter to enable auto ranging When you query a Boolean setting the instrument will always return 0 or 1 CURRent AC RANGe AUTO ON String parameters lt string gt String parameters can contain virtually any set of ASCII characters A string must begin and end with matching quotes either with a single quote or with a double quote You can include the quote delimiter as part of the string by typing it twice without any characters in between The following command uses a string parameter DISPlay TEXT lt a quoted string gt 5 10 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands Commands and command parameters Common commands and SCPI commands may or may not use a par
14. lt name gt PT1 UNIT lt name gt lt name gt Cel Far E lt name gt Select RTD sensor type 00 D100 F100 PT385 PT3916 USER SPRTD or NTCT Set temperature measurement units Celsius Fahrenheit Kelvin 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Use the following commands to enter the parameter coefficients for the USER sensor EMPerature RTD RZERo lt n gt lt n gt R zero value EMPerature RTD ALPHa lt n gt lt n gt Alpha value EMPerature RTD BETA lt n gt lt n gt Beta value Perature RTD DELTa lt n gt E lt n gt Delta value Use the following commands to enter the parameter coefficients for the SPRTD sensor EMPerature SPRTd RZERo lt n gt lt n gt R zero value EMPerature SPRTd A4 lt n gt lt n gt A4 value EMPerature SPRTd B4 lt n gt lt n gt B4 value Perature SPRTd AX lt n gt E lt n gt AX value Perature SPRTd BX lt n gt E lt n gt BX value TEMPerature SPRTd CX lt n gt lt n gt CX value TEMPerature SPRTd DX lt n gt lt n gt DX value Use the following command to measure temperature MEASure TEMPerature 2110 901 01 Rev A July 2012 3 21 Section 3 Basic DMM operation Model 2110 51 Digit Multimeter Reference Manual Thermocouple
15. Next steps In this section Additional Model 2110 information ccccccccssseseeeeeeeeeeseeees 7 1 Additional Model 2110 information This manual has prepared you to start using your new Model 2110 instrument For additional information on the Model 2110 refer to e The Product Information CD ROM ships with the product Contains software tools drivers and product documentation e The Keithley Instruments website htto www keithley com Contains the most up to date information from the website you can access e The Knowledge Center which contains the following handbooks e The Low Level Measurements Handbook Precision DC Current Voltage and Resistance Measurements e Switching Handbook A Guide to Signal Switching in Automated Test Systems e Application notes e Updated drivers e Your local Field Applications Engineer can help you with product selection configuration and usage Check the website for contact information Section 7 Next steps Model 2110 51 Digit Multimeter Reference Manual 7 2 2110 901 01 Rev A July 2012 Appendix A Maintenance In this appendix aligelel Sel HOr Weeeereemerene rare tere A er errrte srrrerr erence A 1 Line TUS Ve plaGe MeN caiveietesceiuncet sige ch oceeeatineeaeiacigeeneeatieeiceg A 1 Current input fuse replacement eceeeceeeseeeseeteteeeeeereaes A 4 Upgrading the TIMI WANG sascoscssies obaccseescetstas mrieesetaetecasserggiesieatis A 5 Introduc
16. Refer to 7 Menu overview on page 2 11 for information about menus AUTO Enables or disables autorange 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 2 General overview 4 RANGE and scroll keys Keys Description lt and gt Use gt and lt keys to scroll through options A and V Use A and Y keys to change the range while measuring Use A and keys to change a digit when setting parameters and entering values NOTE If there are editable characters left or right of the one selected arrow shaped indicators will display on the second line to indicate the presence and location of the additional characters 5 TC input The TC INPUT terminals provide thermocouple temperature measurement The terminals come with built in cold junction compensation so no extra thermocouple adapter is needed A WARNING To prevent electrical shock that could cause injury or death never apply voltages to the LO INPUT terminal while a thermocouple is connected 6 Terminals and fuses The instrument has the following connections on the front panel HI and LO INPUT terminals Use for all measurements except current and TC The maximum input voltage is 1000 V for voltage measurements 200 V for 4 wire measurement A CAUTION Voltages applied to the LO INPUT terminal will cause erroneous thermocouple measurements HI and LO SENSE terminals Use to make 4 wire resist
17. ST This test configures to the 3 A DC range A 20 ms A DC measurement is performed and the result is checked against a limit of OA 5 A This test confirms that the DC current sense path is functional The test limit is set wide because K303 does not open the current input during self test This test should catch a DC current sense failure without causing false failures when current inputs are applied during self test 617 Ohms 100 UA source failed ST This test configures to the 1000 V DC range with the internal 10 M 100 1 divider R204 connected across the input The 100 uA ohms current source is connected The compliance limit of the current source is measured A 20 ms A DC measurement is performed and the result is checked against a limit of 0 12 V 0 01 V 618 DC high voltage attenuator failed ST This test configures to the 1000 V DC range The 500 nA ohms current source is connected to produce a nominal 5 V signal A 20 ms A DC measurement is performed and the result is checked against a limit of 5V 1V 2110 901 01 Rev A July 2012 6 5 Section 6 Troubleshooting quide Model 2110 51 Digit Multimeter Reference Manual 6 6 Error code Type Description 619 Ohms 1 mA source failed ST This test configures to the 1000 V DC range with the internal 10 M 100 1 divider R204 connected across the input The 1 mA ohms current source is connected The compliance limit of the current source
18. Standard accessories The following standard accessories are supplied with the Model 2110 e Safety test leads e USB cable e Power cable Optional accessories The following optional accessories are available for the Model 2110 Keithley part number Optional accessory 4299 3 Single Rack Mount Kit 4299 4 Dual Rack Mount Kit 8605 High Performance Modular Test Leads 8606 High Performance Modular Probe Kit 5805 Kelvin Probes 0 9 m 3 ft 5805 12 Kelvin Probes 3 6 m 12 ft 5808 Low Cost Single Pin Kelvin Probes 5809 Low Cost Kelvin Clip Lead Set 8680 RTD Probe Adapter 8681 Low Cost RTD 7007 1 Shielded GPIB Cable 1 m 3 3 ft 7007 2 Shielded GPIB Cable 2 m 6 6 ft 6517 TP Thermocouple Bead Probe K Type PEE 8410 901 01 Rev AJuly 2012 Model 2110 51 Digit Multimeter Reference Manual Section 1 Introduction General information Displaying the instrument s serial number To display the serial number on the front panel 1 If the Model 2110 is in remote operation press the SHIFT LOCAL key once to place the instrument in local operation 2 Press the SHIFT key 3 Press the CONFIGURE key The display shows MENU 4 Use the right and left RANGE keys to display SYSTEM 5 Press the ENTER key 6 Use the right and left RANGE keys to display SERIAL 7 Press the ENTER key The display shows the serial number on the second row Dimensions The following figure
19. System ODE lANONS srci resha E ainiai niiin 2 20 Turning your instrument on and off The following topics describe how to power your instrument on and off place an instrument in standby and configure the line frequency Proper ventilation is required to keep the 51 2 Digit Multimeter from overheating Even with proper ventilation the Model 2110 can overheat if the ambient temperature is too high or the 5 Digit Multimeter is operated in sink mode for long periods of time The 5 Digit Multimeter has an over temperature protection circuit that will turn the output off if the instrument overheats When the over temperature protection circuit turns the output off a message indicating this condition is displayed You cannot turn the output on until the instrument cools down To prevent damaging heat build up and ensure specified performance make sure there is adequate ventilation and air flow around the instrument to ensure proper cooling Procedure Follow the procedure below to connect the Model 2110 to line power and to turn on the instrument The Model 2110 operates from a line voltage of 100 V to 240 V at a frequency of 50 Hz or 60 Hz Line voltage is set on the rear panel Make sure the operating voltage in your area is compatible A CAUTION Operating the instrument on an incorrect line voltage may cause damage to the instrument possibly voiding the warranty A CAUTION Remove voltage from the front panel input terminals bef
20. The positive end of the source signal must be connected to the HI input terminals and the negative end to the LO input terminals 2110 901 01 Rev A July 2012 3 15 Section 3 Basic DMM operation Model 2110 51 Digit Multimeter Reference Manual Front panel operation Perform the following steps to measure the threshold voltage of a diode 1 Connect the diode to the instrument as shown below These connections forward bias the diode 2 Press the SHIFT key and then the CONT key to select the diode function 3 To check or change the threshold voltage band perform the following steps a Press the CONFIG key and with VF LOW displayed press ENTER b Use the lt gt A and Y keys to set the low threshold voltage 0 01 V to 1 00 V and then press ENTER c With VF HI displayed press ENTER d Use the lt gt A and Y keys to set the high threshold voltage 0 01 V to 1 20 V and then press ENTER 4 Observe the voltage reading on the display The instrument beeps when the reading is within the threshold voltage band Connections for diode measurements Source current flows from INPUT HI to INPUT LO as shown in the following figure Figure 21 Connections for diode measurements INPUT SENSE vadit o4aw TC INPUT SENSE INPUT o4w vo FF TC INPUT FUSE 3A 250V CATI 1000V CATI 4000V ATI 600V L ATII 600V L Remote operation For remote operation the defau
21. The readings in the stack are again averaged to yield a single reading e The repeating average filter waits for the stack to fill with measurement conversions It then averages the readings in the stack to yield a single reading For each subsequent measurement the filter flushes the stack waits for the stack to fill again and then averages the readings to yield another single reading The digital filter is not available for diode continuity frequency or period measurements The digital filter setting is stored in volatile memory On power up the moving average filter is enabled average 10 readings 2110 901 01 Rev A July 2012 3 45 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Front panel operation Perform the following steps to set and enable the digital filter for the selected function 1 Select a measurement function For example press the DCV key to select the DC volts function 2 Press the SHIFT and DIGITS FILTER keys 3 Use the lt and gt keys to display the filter type MOVING AVG or REPEAT AVG and press ENTER 4 Press the key to display READINGS and press ENTER Use the lt gt A and Y keys to specify the number of readings to average and press ENTER 6 With RUN displayed press ENTER to enable the filter The FILT indicator turns on when the digital filter is enabled o Perform the following steps to disable the digital filter for the selected function
22. e INPut subsystem Refer to INPUt subsystem summary on page 5 21 e SENSe subsystem Refer to SENSe subsystem summary on page 5 22 e STATus subsystem summary Refer to STATus subsystem summary on page 5 26 e SYSTem subsystem Refer to SYSTem subsystem summary on page 5 26 e TRIGger subsystem Refer to TRIGger subsystem summary on page 5 27 This section include commands that are device specific to the Model 2110 Although not included in the 1999 0 version of the SCPI standard these commands are compliant to the SCPI format and they follow the syntax rules of the standard Device specific commands are indicated in the command description Many of the required SCPI commands are accepted by the instrument but are not described in this manual for simplicity or clarity Most of these non documented commands duplicate the functionality of a command already described in this section 2110 901 01 Rev A July 2012 5 19 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual 5 20 CALCulate subsystem summary Command Description CALCulate DA DA STA as FUNCtion lt name gt FUNCtion e lt b gt STATe ERCent TARGet lt n gt MIN MAX TARGet MIN MAX AVERage MINimum MAXimum AVERage COUNt NULL OFFset lt n gt MIN MAX OFFset MIN MAX LIMit LOWer lt n gt MIN MAX LOWer MIN MAX UPPer lt
23. for information about DC measurements 2 Information listed in the description column is for reference only This column lists the measurement unit for the lt function gt Do not include units in commands Details This command combines all of the other signal oriented measurement commands to perform a single measurement and acquire the reading Although it does not offer much flexibility using the MEASure command is the simplest way to program the instrument for measurements You specify the measurement function range and resolution the instrument automatically sets the other parameters for you make the measurement and send the result to the output buffer 5 18 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands Example ES EASure VOLT DC 10 0 001 Measure 4 1 2 digits on the 10 Vdc range EAS CURR AC 1 1E 5 Measure 5 1 2 digits on the 1 A range ES Also see INITiate on page 5 17 READ 1 2 on page 5 17 FETCh 1 2 on page 5 16 CONFigure lt function gt lt range gt MIN MAX DEF lt resolution gt MIN MAX DEF on page 5 15 SCPI command subsystem reference The following SCPI subsystems are available on the Model 2110 The subsystem commands are summarized in the following tables e CALCulate subsystem Refer to CALCulate subsystem summary on page 5 20 e DISPlay subsystem Refer to DISPlay subsystem summary on page 5 21
24. is measured A 20 ms A DC measurement is performed and the result is checked against a limit of 0 12 V 0 01 V 620 AC rms zero failed ST This test configures for the 100 mV AC range with the AC input grounded The internal residual noise of the AC section is measured and checked against a limit of 10 mV to 70 mV at the output of the RMS to DC converter 621 AC rms full scale failed ST This test configures for the 100 m V AC range The 1 mA ohms current source is switched on to charge the AC input capacitor C614 This produces a pulse on the output of the RMS to DC converter which is sampled 100 ms after the current is applied A 20 ms A D measurement is performed and checked against a limit of 2 V to 13 V into the A DC 624 Unable to sense line frequency EE ST The AC line frequency cannot be measured after powering on the instrument The instrument will assume 50 Hz line operation for all future measurements 640 Meas setting failed EE You cannot command to set through the A D 641 Meas reading failed EE You cannot command to read from A D 642 Board Protect failed EE The specific IC is malfunctioning or missing All communication is blocked 650 Panel failed EE The main board cannot communicate with the front panel 651 Panel Program Checksum Error EE The checksum from the front panel is incorrect 2110 901 01 Rev A July 2012 Section 7
25. lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to set trigger delay auto or manual TRIGger DELay lt n gt lt n gt 0 to 3600 Trigger delay in seconds 100 us resolution TRIGger DELay AUTO lt b gt lt b gt 0 or OFF Disable auto delay 1 or ON Enable auto delay Reading hold For front panel operation the reading hold feature captures and holds a stable reading on the display Reading hold is not available for remote operation A reading is considered stable when three consecutive measurements are within a sensitivity band When a reading falls outside of the sensitivity band the instrument issues an audible beep and displays the new stable reading This sensitivity band is expressed as a percent of reading on the selected range and can be set by the user from the front panel The sensitivity band can be set to 0 01 percent 0 1 percent 1 0 percent or 10 0 percent The 0 1 percent setting is the power on default 3 36 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Setting reading hold from the front panel Reading hold is enabled by pressing SHIFT and then TRIGGER until the HOLD indicator turns on To disable reading hold press SHIFT again and then press TRIGGER HOLD indicator turns off Perform the following steps to change the se
26. 2012 2 19 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual Set the GPIB address The GPIB address value is set to 16 at the factory The address can be set to any address value between 0 and 30 However the address must be unique in the system It cannot conflict with the address assigned to another instrument or to the GPIB controller To change the GPIB address Press the SHIFT key and then press the CONFIG key Use the and lt keys to select INTERFACE Press ENTER Use the and lt keys to select GPIB Press ENTER The display shows GPIB ADDR Press ENTER Use the and lt keys to change the GPIB address When the correct GPIB address displays press ENTER to save the address OO NOP ON Pee GOIN The address value is saved in nonvolatile memory and will not change when the power is turned off and then turned on again System operations This topic provides information about system related operations Each system related operation performs a task that is not measurement related but plays an important role in making your measurements Turning off measurement display You have the option to stop measurements from showing on the display This option allows you to make faster measurements without waiting for the display to update You can turn off the measurement display during any front panel or remote measurement operations When the measurement display is turned off the OFF indic
27. 3 Press SHIFT and STORE RECALL to display the first stored reading e To scroll through the stored readings use the lt and gt keys e To specify the reading to display press the W key and use the lt gt A and Y keys to select the reading number and then press ENTER 4 When finished press ESC When using auto triggering readings are stored into the data buffer immediately after the STORE key is pressed The MEM indicator turns off when the specified number of readings are stored See Auto triggering on page 3 29 for details When using single triggering pressing the TRIGGER key after the STORE key is pressed allows the first reading to be stored in the data buffer Each subsequent TRIGGER key press stores another reading until the specified number of readings are stored MEM indicator turns off See Single triggering on page 3 29 for details 2110 901 01 Rev A July 2012 3 37 Section 3 Basic DMM operation Model 2110 51 Digit Multimeter Reference Manual Remote operation When the instrument is triggered to start performing measurements it stores a specified number of measurement readings in the data buffer memory The total number of measurements the instrument takes is the product of the trigger count and sample count See Sample count on page 3 34 and Trigger count on page 3 34 for details Use the following command to place the instrument in the wait for trigger state INITiate Use the following co
28. 3 53 Section 3 Basic DMM operation Model 2110 51 Digit Multimeter Reference Manual dBm The dBm math function is defined as decibels above or below a 1 mW reference With a user programmable reference impedance the instrument reads 0 dBm when the voltage needed to dissipate 1 mW through the reference impedance is applied The relationship between dBm a reference impedance and the voltage is defined by the following equation i Rrer mW 10 log Where Vin is the input signal voltage Zrer is the reference impedance The reference resistance Zrer can be set from 50 Q to 8000 and can be set from the front panel or by using remote programming Changing the reference resistance does not affect a stored null relative value The reference resistance value is stored in volatile memory The reference resistance defaults to 600 Q when power to the instrument is cycled This feature is available for DCV and ACV only Front panel operation Perform the following steps to use the dBm function 1 Select the DCV or ACV function 2 Press the SHIFT and NULL MATH keys 3 Use the lt and gt keys to display dBm and press ENTER 4 Use the lt and gt keys to display REF RES and press ENTER Note that if you select the RUN menu option instead the percent function will enable using the current target value 5 Use the lt gt A and Y keys to enter the reference resistance and press ENTER 6 With RUN displaye
29. 9 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Connections for resistance measurements Source current flows from INPUT HI to INPUT LO as shown in the following figure Figure 19 Connections for resistance measurements TC INPUT SENSE INPUT a4w va gt 4F SENSE INPUT va gt 4F TC INPUT RDUT RpuT Measure resistance TA W2 aA 15A 250V Measure CATI 1000V_ H GAT n SVL resistance W4 RANGE CATI 1900V CATE 600v L 2110 901 01 Rev A July 2012 3 10 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to select the function W2 or W4 set a measure range and perform a measurement FUNCtion RESistance Select 2 wire ohms W2 FUNCtion FRESistance Select 4 wire ohms W4 RESistance RANGe lt n gt Set W2 range FRESistance RANGe lt n gt Set W4 range lt n gt 0 to 100e6 Expected ohms reading RESistance RANGe AUTO lt b gt Enable or disable autorange for Q2 FRESistance RANGe AUTO lt b gt Enable or disable autorange for 04 lt b gt 0 or OFF Disable autorange 1 or ON Enable autorange READ Perform measurement and acquire reading Measurement configuration commands can also be used to perform me
30. DMM operation In this section Basic measurement FUNCTIONS cesecceeceseeeeeeteeeeeseeeeeeescees 3 1 Triggering and ata DUTE sisisi 3 28 Enhancing measurement performance ceeeeeeeeeseeeeeeeees 3 38 Basic measurement functions The Model 2110 5 Digit Multimeter can perform the following measurements e Voltage DC and AC e Ratio DC voltage input DC voltage reference e Current DC and AC e Resistance 2 wire and 4 wire e Frequency and period voltage input or current input e Continuity e Diode testing e Temperature RTD and thermocouple e Capacitance Voltage measurements The instrument is capable of measuring DC voltage DCV up to 1000 V and AC voltage ACV up to 750 V e DC voltage DCV measurement ranges 100 mV 1 V 10 V 100 V and 1000 V e AC voltage ACV measurement ranges 100 mV 1 V 10 V 100 V and 750 V AC coupled true RMS 1000 V peak A WARNING Do not apply more than 1000 V peak to the Model 2110 Applying higher voltage is an electric shock hazard and could result in personal injury or death It may also damage the instrument Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual NOTE To eliminate thermal EMFs caused by the differences between two metals use copper test leads to connect your source signal to the Model 2110 NOTE Use the following procedure and commands to perform basic measurements Refer to Enhancing m
31. II connections require protection for high transient overvoltages often associated with local AC mains connections Assume all measurement control and data I O connections are for connection to Category sources unless otherwise marked or described in the user documentation Exercise extreme caution when a shock hazard is present Lethal voltage may be present on cable connector jacks or test fixtures The American National Standards Institute ANSI states that a shock hazard exists when voltage levels greater than 30 V RMS 42 4 V peak or 60 VDC are present A good safety practice is to expect that hazardous voltage is present in any unknown circuit before measuring Operators of this product must be protected from electric shock at all times The responsible body must ensure that operators are prevented access and or insulated from every connection point In some cases connections must be exposed to potential human contact Product operators in these circumstances must be trained to protect themselves from the risk of electric shock the circuit is capable of operating at or above 1000 V no conductive part of the circuit may be exposed f Do not connect switching cards directly to unlimited power circuits They are intended to be used with impedance limited sources NEVER connect switching cards directly to AC mains When connecting sources to switching cards install protective devices to limit fault current and voltage to the card Before
32. Instruments gt GPIB 488 gt GPIB Configuration For National Instruments NI GPIB controllers you can use NI MAX Start NI MAX If your hardware is installed correctly you will see the controller in the GPIB section of the tree control on the left side Select it and right click to see an option to configure the controller Do not forget to save your settings Supplied software The majority of software applications and all instrument drivers from Keithley Instruments depend on some or all of the following software components e NI VISA e VISA shared components e IVI shared components e NI cvi runtime engine e NI ivI compliance package e Keithley instrument driver These software components are included on the CD ROMs that came with your instrument and are also available for download at the Keithley Instruments support website http www keithley com support Instrument driver types There are several different styles of instrument drivers Keithley Instruments provides three different instrument drivers for the Model 2110 A native LabVIEW driver an IVI C driver and an IVI COM driver You need to pick the style that best suits the application development environment ADE that you are using For example if you are using LabVIEW you would pick a native LabVIEW driver Ifa native LabVIEW driver is not available then you can use an IVI C driver because LabVIEW has the option of creating a wrapper
33. MAX Use this command to select the aperture time for frequency function For frequency and period measurements aperture time is analogous to integration time Parameters lt n gt description 0 01 second 4 digit resolution 0 1 second 5 2 digit resolution 1 second 5 2 digit resolution This is the default value 0 01 to 1 ceiling math MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe FREQuency APERture Query the aperture time SENSe FREQuency APERture MIN Query the minimum aperture time SENSe FREQuency APERture MAX Query the maximum aperture time Details Refer to Aperture and resolution for frequency and period measurements on page 3 44 for more information about aperture time SENSe FREQuency CURRent RANGe lt n gt MIN MAX Use this command to select the current range for the frequency function Parameters lt n gt description 0 to 750 Set the expected level of the signal MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe FREQuency CURRent RANGe Query the measurement range SENSe FREQuency CURRent RANGe MIN Query the minimum range SENSe FREQuency CURRent RANGe MAX Query the maximum range 5 46 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe FREQuency VOLTage RANGe lt n
34. NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value NOTE Front panel trigger count settings are not active You can only change the trigger count using remote operation Use the following command to set the trigger count TRIGger COUNt lt n gt lt n gt 1 to 2000 Trigger count 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Trigger delay A trigger delay is normally used to allow an input signal time to settle before making the measurement Settling time is affected by the measurement range test cable properties and the signal source The power on default setting is auto delay The auto delay period is determined by the selected combination of measurement function range integration time and AC filter speed When not using auto trigger delay you can manually set the delay time from 0 to 3600 seconds Your trigger delay time is stored in volatile memory automatic trigger delay will be used when instrument power is turned off and then turned on again The following table lists the auto delay times for each measurement function if you do not specify a delay Auto trigger delay times Measurement Setting Trigger delay DCV DCI PLC gt 1 1 5 ms PLC lt 1 ims ACV ACI 3 Hz 7 0s Remote interface external trigger single tr
35. RESolution lt n gt MIN MAX z RESolution PLCycles lt n gt MIN MAX a NPLCycles MIN MAX RESistance RANGe lt n gt MIN MAX MIN MAX AUTO lt b gt AUTO RESolution lt n gt MIN MAX z RESolution MIN MAX PLCycles lt n gt MIN MAX E NPLCycles FRESistance RANGe lt n gt MIN MAX MIN MAX AUTO lt b gt AUTO 2110 901 01 Rev A July 2012 Query auto range Specify resolution Where lt n gt 1 00e 06 to 1 00e 04 of range MIN or MAX Refer to Bandwidth and resolution for AC measurements on page 3 43 for more information about valid values for n Query the resolution Path to configure AC current Specify range 0 to 10 MIN or MAX Query the range for AC voltage Enable or disable auto range Where 0 OFF and 1 ON Query auto range Specify resolution Where lt n gt 1 00e 06 to 1 00e 04 of range MIN or MAX Refer to Bandwidth and resolution for AC measurements on page 3 43 for more information about valid values for n Query the resolution Path to configure DC current Specify range 10 mA 100 mA 1 A 3 A 10 A MIN or MAX Query the range for DC voltage Enable or disable auto range Where 0 off and 1 on Query auto range Specify resolution lt n gt 3 00e 07 to 3 00e 04 of range MIN or MAX Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more
36. Rev A July 2012 C 19 Appendix C Communication interface Model 2110 51 Digit Multimeter Reference Manual VISA C sample code The following is a simple C C console application that reads back the instrument identification string using VISA C You need to include visa h and link with the visa32 lib file include stdafx h include lt visa h gt define checkErr fCall ine emro CrCallil Giwor arroa lt 2 erewore 8 Wa Success goto Error ls rror error aae o cimek aane S a MOERAS eueepy ViSession defaultRM vi Claes lopue 256 Ore ViStatus error VI_SUCCESS Open session to GPIB device at address 22 checkErr viOpenDefaultRM amp defaultR checkErr viOpen defaultRM GPIBO 14 INSTR VI_NULL VI_NULL amp vi Initialize device echec RETAANE e yal Weise Via Send an IDN string to the device checkErr viPrintf vi IDN n ViUInt16 status 0 do checkErr viReadSTB vi amp status printet ReadSTB X n status while status 0 Read results checkin ecan iaa sae Glee e fs Peint wesmilies joieaioncse Ser umen ti sCleinicsiea eyeatoin Giexerlipve 3 SN loyvlie f i Close session checkErr viClose vi checkErr viClose defaultRM ECROR iit eucicorwe lt Vi SUCCISE aeiae E UNWalsial meco Codes SNN exeicione p printf nDon Dies
37. Summary Bit ROS Request for Service 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix B Status model Clearing registers and queues When the instrument is turned on the bits of all registers in the status structure are cleared reset to 0 and the queue and buffer are empty Commands to reset the Event and Event Enable registers and the Error Queue are listed in the following table In addition to these commands any enable register can be reset by sending the 0 parameter value with the individual command to program the register Common and SCPI commands to reset registers and clear queues Commands Description Ref To reset registers Reset all bits of the following event registers to 0 Note 1 CLS Standard Event Register Questionable Data Register Reset all bits of the following enable registers to 0 Note 1 Standard Event Enable Register Questionable Event Enable Register SRE 0 Clear enable registers PSC 1 If command sent previously turning on instrument power clears the enable registers To clear error queue CLS Clear all messages from Error Queue Note 1 NOTE 1 The Standard Event Enable Register is not reset by CLS Send the 0 parameter value with ESE to reset all bits of that enable register to 0 see Status byte and service request commands on page B 7 When the instrument is powered on the Standard Event Enable Register will not be cleared if users have s
38. Theory of operation In this section AC voltage measurements and crest factor ccceeeeeees 4 1 DMM resistance measurement method seceeeeseeeeeeees 4 3 Reference JUNCHIONS ou cncsscsccedveecctaatdeceedtctedsedecieseaditeeseictieesscies 4 4 Accuracy CANCUIATIONS sss ccedeeseeieteecsstecas oiai 4 5 AC voltage measurements and crest factor The root mean square RMS value of any periodic voltage or current is equal to the value of the DC voltage or current which delivers the same power to a resistance as the periodic waveform does Crest factor is the ratio of the peak value to the RMS value of a particular waveform This is represented by the following equations V I CF Z Po or CF aT Veus Rus The crest factor of various waveforms is different because the peak to RMS ratios are variable For example the crest factor for a pulse waveform is related to the duty cycle as the duty cycle decreases the crest factor increases The RMS calculations and crest factor CF for various waveforms are shown in the following figures Section 4 Theory of operation Model 2110 5 Digit Multimeter Reference Manual Figure 30 RMS calculations and crest factor Half wave rectified sine Vp f l rai Q t T gt Vwo Vpit Rectified square f Pulse AC coupled RMS RMS Ving Ve YD 2 where D duly cycle UT AC coupled RMS Veus Ve AC coupled RMS Veus gt
39. This fuse protects the power line input of the instrument If the line fuse needs to be replaced refer to Line fuse replacement on page A 1 Power up sequence Self test procedures are built into the Model 2110 for checking that the logic and measurement hardware are functioning properly Every time the instrument power is turned on a set of test procedures is performed to make sure the basic function of the instrument works properly If any error occurs during self test procedures it indicates that parts of the instrument are not operating properly and need to be serviced Refer to Error codes on page 6 3 for information about self test error codes A CAUTION Erroneous self test failures may occur if the setting of power line voltage is incorrect Errors may also occur because of signals present on the input terminal during self test procedures Long test leads can act as an antenna causing pick up of AC signals 2110 901 01 Rev A July 2012 2 5 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual Front panel overview This topic describes the keys connections and fuse device on the front panel The following figure shows the front panel A brief description of the front panel features follows the figure Figure 8 Front panel USSU 2110 5 1 2 DIGIT MULTIMETER gG0049 mV Be 4aedis HZ E 2ND i i AUTOHOLD RECALL FILTER MATH LOCAL MENU AUTO E tS a sed mi OFF GATI 1000 CAT I
40. about power on configuration 5 8 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SRE lt NRf gt service request enable command This command sets or clears the individual bits of the Service Request Enable Register Usage SRE SRE A Fl Details The individual bits of the Service Request Enable Register can be set or cleared by using the SRE common command To read the Service Request Enable Register use the SRE query command The Service Request Enable Register clears when power is cycled or a parameter value of 0 is sent with the SRE command for example SRE 0 Set the instrument for an SRQ interrupt by using SRE 32 SRE service request enable command query This command queries the Status Byte Enable Register Usage Details The instrument returns a decimal value which corresponds to the binary weighted sum of all bits set in the register STB status byte query The STB command is similar to a serial poll but it is processed like any other instrument command Usage STB Details The STB command returns the same result as a serial poll but the request service bit bit 6 is not cleared if a serial poll has occurred TRG trigger command Use the TRG command to issue a trigger to the instrument It has the same effect as a group execute trigger GET Usage TRG Det
41. be serviced A CAUTION Erroneous self test failures may occur under the following conditions Signals are present on the input terminal during self test procedure Long test leads act as an antenna causing pick up of AC signals Power line voltages are not set correctly You may also run self tests on the instrument that provide additional hardware testing To run a self test use the following procedure 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the gt and lt keys to display SYSTEM and then press the ENTER key 3 Use the gt and lt keys to display SELF TEST and then press the ENTER key The instrument runs the test and shows the results on the display as follows e TEST PASS if the test passes e TEST FAIL if the test fails The instrument also lights the ERR indicator if the test fails If there are errors refer to Viewing errors in the error queue on page 2 23 for information about how to view the errors 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 6 Troubleshooting quide Error codes Errors are retrieved in first in first out FIFO order The first error returned is the first error that was stored When you have read all errors from the queue the ERROR annunciator turns off The instrument beeps once each time an error occurs If more than 20 errors occur the last error stored in the queue the most recent
42. by sending three separate program messages as follows stat ques enab lt n gt stat ques enab Stalspres In each of the above program messages the path pointer starts at the root command stat and moves down the command levels until the command is executed Multiple command messages You can send multiple command messages in the same program message as long as they are separated by semicolons The following example shows two commands in one program message stat ques stat ques enab lt n gt 2110 901 01 Rev A July 2012 5 11 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual When the above message is sent the first command word is recognized as the root command stat When the next colon is detected the path pointer moves down to the next command level and executes the command When the path pointer sees the colon after the semicolon it resets back to the root level and starts over Commands that are on the same command level can be executed without having to retype the entire command path For example stat ques enab lt n gt enab After the first command enab is executed the path pointer is at the third command level in the structure Since enab is also on the third level it can be typed in without repeating the entire path name Notice that the leading colon for enab is not included in the program message If a colon were included the path pointer would reset to the root
43. command The INITiate command is used to take the instrument out of idle in order to perform measurements After all programmed operations are completed the instrument returns to the idle state at which time all pending commands including OPC and or OPC are executed After the last pending command is executed the OPC bit and or an ASCII 1 is placed in the Output Queue 2110 901 01 Rev A July 2012 5 7 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual PSC lt b gt power on status clear This command enables or disables the power on status clear function Usage PSC 0 PSC 1 Details When PSC 1 is in effect the Status Byte and Standard Event Register enable masks are cleared when power is turned on PSC 1 is the default When PSC 0 is in effect the Status Byte and Standard Event Register enable masks are not cleared when power is turned on The command is stored in nonvolatile memory PSC power on status clear query This query command returns the power on status clear setting Usage PSC Details Query the power on status clear setting Returns 0 PSC 0 or 1 PSC 1 RST reset command This command resets the instrument to the power on configuration Usage RST Details Reset the instrument to the power on configuration This command does not clear the error queue Refer to Power on settings on page 1 6 for information
44. conventional Microsoft Windows DLLs to export simple C based functions For more information about IVI drivers and the differences between the COM C and NET interfaces see Making the Case for IVI http pacificmindworks com docs Making 20the 20Case 20for 201 VI pdf NI CVI runtime engine IVI C drivers that are created using National Instruments NI LabWindows CVI environment depend on either the CVI runtime cvirte dll or the instrument support run time instrsup dll and must be present on the system for them to run NI IVI Compliance Package The National Instruments NI IVI Compliance Package is a software package that contains IVI class drivers and support libraries that are needed for the development and use of applications that leverage IVI instrument interchangeability The IVI Compliance Package also is based on and is compliant with the latest version of the instrument programming specifications defined by the IVI Foundation The NI ICP installer installs the IVI shared components CVI runtime engine and the instrument support runtime engine 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface Keithley I O layer The Keithley I O Layer KIOL is a software package that contains several utilities and drivers It is mainly used as a supplement to IVI drivers or application software like Test Script Builder TSB The KIOL contains
45. e NI VISA Runtime Time Engine e Keithley Configuration Panel e Keithley Communicator NI VISA Runtime NI VISA is National Instruments NI implementation of the VISA standard There are two versions a full version and a run time version The Keithley I O Layer KIOL contains a licensed version of the NI VISA Run Time Engine that contains only the binary files DLLs that allow the NI VISA drivers to operate If you already have NI software such as LabVIEW or LabWindows installed you have a valid license that can be used with Keithley drivers and application software If you do not have NI software installed you must install the KIOL to install the the drivers Keithley Configuration Panel The Keithley Configuration Panel is a configuration utility for IVI drivers similar to NI MAX It also has the ability to autodetect USBTMC instruments and LAN instruments that support the VXI 11 protocol Keithley Communicator The Keithley Communicator is a dumb terminal program that uses VISA to communicate with the instrument Computer requirements for the Keithley I O Layer The Keithley I O Layer version C02 supports the following operating systems e Microsoft Windows 7 32 bit only e Microsoft Windows Vista SP1 e Microsoft Windows XP SP2 e Microsoft Windows 2000 SP4 Note that Microsoft Windows 95 Windows ME Windows 98 and Windows NT are not supported How to uninstall previous versions of
46. error is replaced with the error code 350 WOO many eierors No additional errors are saved until you remove errors from the queue After you remove errors from the queue the instrument responds with 0 No error The following conditions clear the error queue e Turning off the power e Sending a CLS clear status command The RST reset command does not clear the error queue Refer to Viewing errors in the error queue on page 2 23 for information about how to view the errors This topic provides information about execution errors EE and self test errors ST Error code Type Description 101 Invalid character EE An invalid character was found in the command string 102 Syntax error EE Invalid syntax was found in the command string 103 Invalid separator EE An invalid separator was found in the command string 104 Data type error EE A parameter type error was found in the command string 105 GET not allowed EE A Group Execute Trigger GET is not allowed in the command string 108 Parameter not allowed EE More parameters were found than needed for the command 109 Missing parameter EE Not enough parameters were received for the command 112 Program mnemonic too EE A command header with too many characters was received long 113 Undefined header EE An invalid command was received 121 Invalid character in number EE An invalid character was found
47. for capacitance 2110 901 01 Rev A July 2012 3 25 Section 3 Basic DMM operation Model 2110 51 Digit Multimeter Reference Manual Secondary measurement function The instrument provides dual measurement capability When you enable the secondary measurement function or second function 2ND you make two measurements at the same time series measurements In the following table the symbol e indicates which secondary measurement functions are available for each primary measurement functlon and the 4 symbol indicates capacitance Diode and continuity testing are not available as a secondary function Secondary function E FREQ FREQ PERIOD PERIOD TEMP TCOUPL function VOLT CURR VOLT CURR RTD 02 04 mem PERIOD evn ees ee a ea el a ra baie SSS ee a ed ee ee ee oe ait a a a_i a ca Feo To ee measure DCI and DCV from the same input source you have to use three test leads as shown below The voltage and current measurements share the same common lead at the INPUT LO terminal However the resistance of the external LO test lead and the resistance of the internal current measurement LO circuit affect measurement accuracy The resistance of the internal current measurement LO circuit is approximately 3 mQ If for example the LO test lead is 7 mQ the total common resistance is 10 mQ If 1 A is being measured by the instrument the voltage would be affected as follows 1Ax10mQ 10 mV Theref
48. gt MIN MAX 0 ec eeeeeeeeceeeeeeteneeeeeeeteaeeeeaeeteaeeeeaeete 5 57 SENSe TEMPerature SPRTD A4 lt n gt MIN MAX scriem 5 58 SENSe TEMPerature SPRTD B4 lt n gt MIN MAX iiciin ee 5 58 SENSe TEMPerature SPRTD AX lt n gt MIN MAX ces eeeeeceeeee see neeeeeseeeeeeeeeeneeenenenenenes 5 59 SENSe TEMPerature SPRTD BX lt n gt MIN MAX eee ee cee eee cee ceee tees see teeeeaeeeaeteaeteneteaes 5 59 SENSe TEMPerature SPRTD GX lt n gt MIN MAX o s c cccseesnconsnsideotseonceceasenevesdecnnereanstdonbdeoniecs 5 60 SENSe TEMPerature SPRTD DX lt n gt MIN MAX 0 2 ee cceeee cess eeeeeeeeeeeeeseeeaeeeeeeeneneees 5 60 SENSe TEMPerature TRANSGUCEr NaN csicetneccetiacd openeichnacsea aiei N 5 61 ISEN Se UNUM SAG Sermons pina r AA A A Ea 5 61 SENSe VOLTage AC RANGe lt n gt MIN MAX ccccsccccseeseeeesseeeeeseeeeeseeeeeeseaeeeessneeeensneees 5 62 SENSe VOLTage AC RANGe AUTO SDS cic ccciccccnscetaxesocasiiasiasa ea cuccznse esssdeansoseadsceceiassecdeaks 5 62 SENSe VOLTage AC RESolution lt n gt MIN MAX cccccccceessceeeeeeeeeeseneeeeeesaeeesssneeeessneeees 5 63 SENSe VOLTage DC RANGe lt n gt MIN MAX c ccceeeeceeeeeseeeceseeeeeceeeeeessaeeeesseeeeesneeees 5 63 SENSe VOL Tagel DC RANGGIAUTO Ss ssccccssssscccnesscdssnndzevsscetsavsicesacasazeanciscansnausegedganciaess 5 64 SENSe VOLTage DC NPLCycles lt n gt MIN MAX cccccccsssceeeeseeeeeeeseeeeessneeeee
49. gt MIN MAX Use this command to select the function frequency and set a measure range Parameters lt n gt description 0 to 750 Set AC voltage range for frequency function The expected AC voltage level of the signal MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe FREQuency VOLTage RANGe Query the measurement range SENSe FREQuency VOLTage RANGe MIN Query the minimum range SENSe FREQuency VOLTage RANGe MAX Query the maximum range SENSe FREQuency VOLTage RANGe AUTO lt b gt This command turns autorange on or off Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description SENSe FREQuency VOLTage RANGe AUTO Query autorange state 2110 901 01 Rev A July 2012 5 47 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual SENSe FUNCtion 1 2 lt function gt This command selects the measurement function listed in the function parameter You can also use this command to turn off the secondary display Parameters Query Details lt function gt description CURRent DC Select amps function DC CURRent AC Select amps function AC VOLTage DC Select volts function DC VOLTage AC Select volts function AC VOLTage DC RATio Select DC ratio measurements This param
50. in volatile memory The values are reset to zero when the instrument is turned off Limits can be used with all measurements except continuity and diode measurements Front panel operation Perform the following steps to use the limits feature 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display LIMITS and press ENTER 3 Set the high and low limits a Use the lt and gt keys to display HIGH LIMIT and press ENTER Note that if you select the RUN menu option instead the limits feature will enable using the present limit values b Use the lt gt A and Y keys to set the high limit Note that the polarity sign can be toggled between plus and minus Press the ENTER key c Use the lt and gt keys to display LOW LIMIT and press ENTER d Use the lt gt A and Y keys to set the low limit and press ENTER 4 With RUN displayed press ENTER The MATH indicator turns on and limit testing starts You can disable the math operation by pressing a different function key You can also disable it from the math menu as follows 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display OFF and press ENTER 2110 901 01 Rev A July 2012 3 51 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Remote operation NOJS Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects
51. information about valid values for n Query the resolution Specify the integration time in number of power line cycles for the selected function 0 001 0 006 0 02 0 06 1 2 10 MIN or MAX Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more information about valid values for n Query NPLCycles Path to configure resistance 2 wire Q Specify range 0 to 100e6 MIN or MAX Query resistance range Enable or disable auto range Where 0 OFF and 1 ON Query auto range Specify resolution lt n gt 3 00e 07 to 3 00e 04 of range MIN or MAX Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more information about valid values for n Query the resistance resolution Specify the integration time in number of power line cycles for the selected function 0 001 0 006 0 02 0 06 1 2 10 MIN or MAX Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more information about valid values for n Query NPLCycles Path to configure fresistance 4 wire Q Specify range 0 to 100e6 MIN or MAX Query the fresistance range Enable or disable auto range Where 0 OFF and 1 ON Query auto range 5 23 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual Command Description iR RI N N FREQ eC tA 2A PE
52. integration time VOLTtage DC NPLCycles lt n gt Set integration time for DCV CURRent DC NPLCycles lt n gt Set integration time for DCI RESistance NPLCycles lt n gt Set integration time for Q2 FRESistance NPLCycles lt n gt Set integration time for Q4 lt n gt 0 001 to 100 Number of power line cycles NPLC Use the following commands to set resolution VOLTtage DC RESolution lt n gt Set integration time for DCV CURRent DC RESolution lt n gt Set integration time for DCI RESistance RESolution lt n gt Set integration time for Q2 FRESistance RESolution lt n gt Set integration time for Q4 lt n gt See note Measurement resolution NOTE The resolution setting range for lt resolution gt depends on the selected function and range The maximum value for DC measurement is 3 00e 04 x full scale range and the minimum value is 3 00e 07 x full scale range For example for DCV 1000 V range the minimum value is 3 00e 07 x 1000 V 3 00e 04 The maximum value is 3 00e 04 x 1000 V 3 00e 01 Therefore lt resolution gt 3 00e 04 to 3 00e 01 for the DCV 1000 V range For example for DCI 10 A range the minimum value is 3 00e 07 x 10 A 3 00e 06 The maximum value is 3 00e 04 x 10 A 3 00e 03 Therefore lt resolution gt 3 00e 06 to 3 00e 03 for the DCI 10 A range For example for Q2 and 04 1 00e 08 Q range the minimum value is 3e 07 x 1 00e 08 Q 30 The maximum value is
53. level and expect a root command Since enab is not a root command an error would occur Command path rules e Each new program message must begin with the root command unless it is optional for example SENSe If the root is optional simply treat a command word on the next level as the root e The colon at the beginning of a program message is optional and need not be used For example TSC Pros ste oes e When the path pointer detects a colon it moves down to the next command level An exception is when the path pointer detects a semicolon which is used to separate commands within the program message see next rule e When the path pointer detects a colon that immediately follows a semicolon it resets back to the root level e The path pointer can only move down It cannot be moved up a level Executing a command at a higher level requires that you start over at the root command Using common commands and SCPI commands in the same message Both common commands and SCPI commands can be used in the same message as long as they are separated by semicolons Acommon command can be executed at any command level and will not affect the path pointer For example stat ques enab lt n gt ESE lt n gt Program message terminator PMT Each program message must be terminated with a LF line feed EOI end or identify or an LF EOI The bus will hang if your computer does not pro
54. lt b gt This command turns AC current autorange on or off Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description CURRent AC RANGe AUTO Query autorange state 5 42 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe CURRent DC RANGe AUTO lt b gt This command turns DC current autorange on or off Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description CURRent DC RANGe AUTO Query autorange state SENSe DETector BANDwidth lt n gt MIN MAX Use this command to specify the lowest frequency expected in the input signal The instrument selects the slow medium or fast AC filter based on the frequency you specify Parameters lt n gt description 3 Slow AC filter 3 Hz 3 any value lt 3 will error A floor calculation is performed 20 Medium AC filter 20 Hz 200 Fast AC filter 200 Hz This is the default value MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe DETector BANDwidth Query the bandwidth SENSe DETector BANDwidth MIN Query the minimum bandwidth SENSe DETector BANDwidth MAX Query the maximum bandwidth Details Refer to Bandwidth and resolution for AC measurements on page 3 43 more information about bandwidt
55. measurements The following table lists the temperature range for the supported thermocouple TC types Thermocouple temperature measurement ranges Thermocouple type Temperature range C Temperature range F B 600 to 1820 1112 to 3308 C 0 to 2316 32 to 4200 8 E 250 to 1000 418 to 1832 J 210 to 1200 346 to 2192 K default 200 to 1372 328 to 2501 6 N 200 to 1300 518 to 2372 R 0 to 1767 32 to 3212 6 S 0 to 1767 32 to 3212 6 T 250 to 400 418 to 752 Configuration settings for thermocouple temperature measurements e Thermocouple type B C E J K N R S T Default setting K e Measurement units C or F Default setting C e Reference junction Real or simulated Default setting Real A thermocouple measurement is referenced to a known temperature The reference junction can be real or simulated For a real reference junction the instrument performs a temperature measurement on a built in cold junction compensator and uses that reading as the reference point for subsequent thermocouple measurements For a simulated reference junction you enter a temperature reading to use as the reference temperature An ice bath is typically used in determining a simulated reference junction 3 22 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Front panel operation Perform the following steps to configure the Mo
56. minimum value is 3 00e 07 x full scale range For example for the DCV 1000 V range the minimum value is 3 00e 07 x 1000 V 3 00e 04 The maximum value is 3 00e 04 x 1000 V 3 00e 01 Therefore lt resolution gt 3 00e 04 to 3 00e 01 for the DCV 1000 V range The maximum value for AC measurement is 1 00e 04 x full scale range and the minimum value is 1 00e 06 x full scale range For example for the ACV 750 V range the minimum value is 1 00e 06 x 750 V 1 00e 03 The maximum value is 1 00e 04 x 750 V 1 00e 01 Therefore lt resolution gt 1 00e 03 to 1 00e 01 for the ACI 10A range The 750 V range is treated as a 1000 V range for the purposes of resolution calculations 2110 901 01 Rev A July 2012 3 3 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Ratio measurements This feature calculates the ratio of an input DC voltage to a reference DC voltage using the following equation DC input voltage Ratio _ _ _ DC reference voltage NOTE This function only applies to DC voltage measurement NOTE Use the following procedure and commands to perform basic measurements Refer to Enhancing measurement performance on page 3 38 for details about setting measurement speed and resolution It also provides information on using other features and settings to optimize measurement performance Front panel operation Perform the following steps to perform ratio calculations
57. n gt MIN MAX UPPer MIN MAX MXB Factor lt n gt MIN MAX Factor MIN MAX BFactor lt n gt MIN MAX BFactor MIN MAX DB REFerence lt n gt MIN MAX REFerence MIN MAX DBM REFerence lt n gt MIN MAX REFerence MIN MAX A FEED RDG_STORE CALC A FEED Path to configure math calculations Specify math function PERCent AVERage NULL LIMit MXB DB or DBM PERCent is the default math function Query the present math function Returns PERC AVER NULL LIM MXB DB or DBM Enable or disable calculation for the specified math function Where 0 off and 1 on Default is ON Query state of math function Returns 0 off or 1 on Path to configure percent calculations PERCent is the default math function Specify target value MIN or MAX for PERCent calculation Query the target value for percent math function Path to query reading values Query the minimum value found during the Min Max operation Query the maximum value found during the Min Max operation Query the average value of all readings taken since the Min Max operation has been enabled Query the number of readings taken since Min Max has been enabled Path to configure the Null register Store a null value MIN or MAX in the instrument s Null Register Query the null value Path to configure limit testing Specify the lower limit for limit testing You can set the valu
58. oo Dut es oTo 2 m K ott l Psesssca ly a 4 f Model 2110 Py l e e DUT aa oTo i 10 ee yg Switch system Use the following command to enable external triggering TRIGger SOURce EXTernal 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation EXT TRIG terminal The EXT TRG external trigger terminal is located on the instrument s rear panel Use this terminal to trigger the instrument by sending it a low true pulse In addition you can trigger the instrument by connecting a simple switch to the EXT TRG terminal Figure 28 EXT TRIG terminal Input EXT TRIG av nO ee gt 1us EXT TRIG VM COMP terminal The VM COMP voltmeter complete BNC terminal located on the rear panel outputs a low true pulse after finishing each measurement Figure 29 VM COMP terminal Output 5V VM COMP n gt k Approximately 2 us Trigger settings The following settings are used to configure triggering e Sample count e Trigger count e Trigger delay e Reading hold Sample count trigger delay and reading hold can be set from the front panel Sample count trigger count and trigger delay can be set using remote operation NOTE See Data buffer on page 3 37 for information about storing measured readings in the buffer 2110 901 01 Rev A July
59. press ENTER Note that if you select the RUN menu option instead MX B will enable using the present M and B values b Use the lt gt A and Y keys to set the M value Note that the polarity sign can be toggled between plus and minus Press the ENTER key c Use the lt and gt keys to display SET B and press ENTER d Use the lt gt A and Y keys to set the B value and press ENTER 4 With RUN displayed press ENTER The MATH indicator turns on You can disable the math operation by pressing a different function key You can also disable it from the math menu as follows 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display OFF and press ENTER Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to configure the MX B math function CALCulate FUNCtion MXB Select the MX B math function CALCulate MXB MMFactor lt n gt Set the M value CALCulate MXB MBFactor Set the B value lt n gt see Note Set value 1 u resolution NOTE The MX B value setting range depends on the selected function For example for DCV the value can be set from 1200 to 1200 CALCulate STATe lt b gt Enable or disable the null feature lt b gt 0 or OFF Disable the null feature 1 or ON Enable the null feature 2110 901 01 Rev A July 2012
60. restores operation of all front panel controls C 10 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface DCL Use the device clear DCL command to clear the GPIB interface and return it to a known state Note that the DCL command is not an addressed command so all instruments equipped to implement DCL will do so simultaneously When the Model 2110 receives a DCL command it e Clears the input buffer output queue and command queue e Cancels deferred commands e Clears any command that prevents the processing of any other device command A DCL does not affect instrument settings and stored data SDC The selective device clear SDC command is an addressed command that performs essentially the same function as the device clear DCL command However because each device must be individually addressed the SDC command provides a method to clear only selected instruments instead of clearing all instruments simultaneously with the DCL command When the Model 2110 receives an SDC command it clears the input buffer and output queue cancels deferred commands and clears any command that prevents the processing of any other device command An SDC command does not affect instrument settings and stored data GET The group execute trigger GET command is a GPIB trigger that triggers the instrument to take readings from a remote interface SPE SPD Use the serial polling seq
61. shifted function for the next key you press DCV DCI Press the DCV DCI key CONFIG Press the CONFIG key to configure DC current measurements NPLC Use gt and lt keys to select resolution adjustment Refer to Resolution and integration time on page 3 41 for information about the number of power line cycles NPLC RANGE Use gt and lt keys to display additional selections Refer to Range selection on page 3 39 for details ACV ACI Press the ACV ACI key CONFIG Press the CONFIG key to configure the instrument for AC current measurements BAND WIDTH Use gt and lt keys to select bandwidth Refer to Bandwidth and resolution for AC measurements on page 3 43 for details RANGE Use gt and lt keys to display additional selections Refer to Range selection on page 3 39 for details Q2 94 Press the Q2 Q4 key CONFIG Press the CONFIG key to configure the instrument for resistance measurements NPLC Use gt and lt keys to select resolution adjustment Refer to Resolution and integration time on page 3 41 for information about the number of power line cycles NPLC RANGE Use gt and lt keys to display additional selections Refer to Range selection on page 3 39 for details FREQ 4F Press FREQ 4F key CONFIG Press the CONFIG key to configure the instrument for capacitance measurements RANGE Use and lt keys to display additional selections Refer to Range selection on page 3 39 for det
62. shows dimensions for the Model 2110 The figure includes designators to indicate 1 Dimensions without the handle and the front and rear bumpers 2 Dimensions with the handle and the front and rear bumpers 3 Dimensions with the front and rear bumpers but without the handle Figure 2 Dimensions 8 45 in 214 6 mm 11 05 in 280 7 mm 4 92 Ibs 2230 g 9 95 in 252 8 mm 8 93 in 226 8 mm lt 12 00 in 305 mm 5 84 Ibs 2650 g lt 12 00 in 305 mm __ EN 5 53 lbs 2510 g 2110 901 01 Rev A July 2012 1 5 Section 1 Introduction Model 2110 51 Digit Multimeter Reference Manual Power on settings See the following table for information about the Model 2110 factory default settings These settings are also restored when the instrument is turned on and when the instrument receives a RST command from a remote interface Function Default Function displayed after the instrument is turned on DC voltage Auto zero ON Frequency and period source AC voltage Output format ASCII Ratio OFF AC voltage Frequency 20 Hz AC digits 5 5 Range 10V DC voltage DC digits 5 5 1 PLC Range 1V AC current Frequenc
63. stored in volatile memory and is cleared after the instrument has been turned off or a remote interface reset occurs Front panel operation Perform the following steps to use the percent math function 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display PERCENT and press ENTER 3 Use the lt and gt keys to display TARGET and press ENTER Note that if you select the RUN menu option instead the percent function will enable using the current target value 4 Use the lt gt A and Y keys to enter the target value Note that the polarity sign can be toggled between plus and minus 5 Press the ENTER key The MATH indicator turns on You can disable the math operation by pressing a different function key You can also disable it from the math menu as follows 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display OFF and press ENTER 2110 901 01 Rev A July 2012 3 47 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual 3 48 Remote operation NOJS Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to configure and control the percent math function CALCulate FUNCtion PERCent Select the percent math function CALCulate PERCent TARGet lt n gt Set target value lt n gt see Note Set tar
64. to set a measurement resolution for 2 wire 02 measurements NOTE When you set the integration time the instrument automatically updates the reading resolution Parameters lt n gt description 3 00e 07 to 3 00e 04 Q2 range Select the resolution of the measurement MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe RESistance RESolution Query the resolution setting SENSe RESistance RESolution MIN Query the minimum resolution setting SENSe RESistance RESolution MAX Query the maximum resolution setting Details Refer to Aperture and resolution for frequency and period measurements on page 3 44 more information about resolution 2110 901 01 Rev A July 2012 5 51 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe RESistance NPLCycles lt n gt MIN MAX Use this command to select the integration time for 2 wire measurements Integration time for 2 wire measurements is expressed as the number of power line cycles NPLC Parameters lt n gt 0 001 0 006 0 02 0 06 0 2 0 6 1 2 10 100 MINimum MAXimum Query command SENSe R SENSe R SENSe R Details description Select 0 001 NPLC Select 0 006 NPLC Select 0 02 NPLC Select 0 06 NPLC Select 0 2 NPLC Select 0 6 NPLC Select 1 NPLC Select 2 NPLC Select 10 NPLC Select 100 NPLC
65. type for temperature measurement with RTD Parameters lt name gt description PT100 Select RTD type PT100 D100 Select RTD type D100 F100 Select RTD type F100 PT385 Select RTD type PT385 PT3916 Select RTD type PT3916 USER Select RTD type USER SPRTD Select RTD type SPRTD NTCT Select RTD type NTCT Query command description SENSe TEMPerature RTD TYPE Query the RTD type for temperature measurement with RTD Details Refer to Thermocouple measurements on page 3 22 and RTD coefficients and temperature calculation on page 3 19 for information about RTD coefficients 5 56 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands SENSe TEMPerature RTD RZERo lt n gt MIN MAX Use this command to select the R Zero constant for the user defined RTD type Parameters lt n gt description R Zero value Select the R Zero value MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature RTD RZERo Query the R Zero constant for the user defined RTD type SENSe TEMPerature RTD RZERo MIN Query the minimum R Zero constant for the user defined RTD type SENSe TEMPerature RTD RZERo MAX Query the maximum R Zero constant for the user defined RTD type Details Refer to the following topic in the Temperature measurement on page 3 17 secti
66. voltages of 100 V 120 V 220 V and 240 V Refer to Voltage selection on page 2 2 for details e Fuse Contains the power line fuse Refer to Line fuse replacement on page A 1 for details 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Model 2110 51 Digit Multimeter Reference Manual Section 2 General overview 6 Interface port If the optional GPIB connection is present in the interface port you can connect the instrument to a remote computer with an IEEE 488 cable Refer to GPIB connector on page 2 19 for details Rear panel connection details The following topics describe how to connect the cable connections for the communication interfaces To properly set up the communications interfaces after connection see the information in Communication interfaces USB connector The downstream Type B USB 2 0 receptacle located on the rear panel connects to a host Use the rear connector to communicate with the instrument over USB by sending the desired commands Refer to USB communications on page C 1 for information about using this connector Figure 14 USB connector Type B 2 1 Se Instrument connector rear panel GPIB connector To connect Model 2110 to the GPIB bus use a cable equipped with standard IEEE 488 connectors as shown below Refer to GPIB setup on page C 8 for information about using this connector Figure 15 IEEE 488 connector 2110 901 01 Rev A July
67. with the detected instrument VISA resource string displayed 8 Click Next The Name Virtual Instrument dialog box is displayed C 4 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface Figure 41 Name Virtual Instrument dialog box r Keithley Add Wizard Name Virtual Instrument Enter a Virtual Instrument Name below The wizard will replace spaces with underscore _ characters Press Finish to save your changes Press Cancel to quit this operation Virtual Instrument Name MyUSBInstrument Configuration Summary 9 Inthe Virtual Instrument Name box enter a name that you want to use to refer to the instrument 10 Click Finish 11 Click Cancel to close the Wizard 12 Save the configuration From the Configuration Utility select File gt Save 13 In the Keithley Communicator select File gt Open Instrument to open the instrument you just named 2110 901 01 Rev A July 2012 C 5 Appendix C Communication interface Model 2110 5 Digit Multimeter Reference Manual Figure 42 Keithley Communicator Open Instrument File Edit Execution Command Tools Help je u S lle r Open an Instrument Instrument OPEN AN INSTRUMENT Open an instrument 6 30 2010 4 12 PM A E 14 Click OK 15 Send a command to the instrument and see if it responds NOTE If you have a full version of NI VISA on your system you can
68. 00 V 1000 V MIN or MAX MIN MAX Query the range AUTO lt b gt Enable or disable auto range Where 0 OFF and 1 ON AUTO Query auto range RESolution lt n gt MIN MAX Specify resolution lt n gt 3 00e 07 to 3 00e 04 of range MIN or MAX Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more information about valid values for n RESolution MIN MAX Query the resolution NPLCycles lt n gt MIN MAX Specify the integration time in number of power line cycles for the selected function 0 001 0 006 0 02 0 06 1 2 10 MIN or MAX Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more information about valid values for n NPLCycles MIN MAX Query NPLCycles VOLTage AC Path to configure AC voltage RANGe lt n gt MIN MAX Specify range 100 mV 1 V 10 V 100 V MIN or MAX MIN MAX Query the range AUTO lt b gt Enable or disable auto range Where 0 OFF and 1 ON 5 22 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands Command Description AUTO ESolution lt n gt MIN MAX RESolution CURRent AC RANGe lt n gt MIN MAX MIN MAX AUTO lt b gt AUTO RESolution lt n gt MIN MAX RESolution MIN MAX CURRent DC RANGe lt n gt MIN MAX MIN MAX AUTO lt b gt AUTO
69. 1 Digit Multimeter Reference Manual Section 5 Remote commands TRIGger subsystem summary Command Description TRIGger SOURcCe lt name gt Specify a trigger source The instrument will accept a software BUS trigger an immediate internal trigger IMMediate or a hardware trigger from the rear panel EXT TRIG terminal SOURCe Query the trigger source COUNt lt n gt MIN MAX DEF INF Specify the number of triggers the instrument will accept before returning to the idle state 1 to 50 000 MIN MAX or INF The INFinite parameter instructs the instrument to take triggers continuously COUNt Query measure count Returns the number of triggers the instrument will accept before returning to the idle state DELay lt n gt MIN MAX DEF Set delay time 0 to 3600 sec MIN or MAX DELay MIN MAX DEF Query the trigger delay time AUTO lt b gt Enable or disable auto delay Where 0 off and 1 on AUTO Query state of delay Returns O off or 1 on SAMPle Path to trigger sample COUNt lt n gt MIN MAX DEF Set the number of readings samples the instrument takes per trigger 1 to 50 000 MIN or MAX COUNt MIN MAX DEF Query the sample count 2110 901 01 Rev A July 2012 5 27 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual CALCulate subsystem The commands in this subsystem configure and control the Calculate subsystems and a
70. 1 Press the SHIFT and DIGITS FILTER keys 2 Use the lt key to display OFF and press ENTER The FILT indicator turns off Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to configure and enable the digital filter AVERage TCONtrol lt name gt Select filter type lt name gt MOVing Moving average filter REPeat Repeating average filter AVERage COUNt lt n gt Set number of readings to average lt n gt 2 to 100 Number of readings to average AVERge STATe lt b gt Enable or disable digital filter lt b gt 0 or OFF Disable digital filter 1 or ON Enable digital filter 3 46 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Math operations The instrument can perform the following math operations e PERCENT e AVERAGE e NULL e LIMITS e MX B e dB e dBm You can apply these math operations to all measurement functions except continuity and diode testing The MATH indicator for the display turns on when a math operation is enabled Percent This mathematical function calculates the ratio of a measured reading to a specified target value in the form of a percentage The equation to calculate percent is shown as follows Input reading P Target value Percent 100 The set target value is
71. 2012 3 33 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual 3 34 Sample count The sample count is the number of measurements up to 2000 to perform each time the instrument is triggered The sample count is stored in volatile memory It defaults to one 1 when instrument power is turned off and then turned on again Setting sample count from the front panel Perform the following steps to set the sample count 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the lt and gt keys to display TRIG SYS and press ENTER 3 Use the lt and gt keys to display SAMPLE CNT and press ENTER 4 Use the lt gt A and Y keys to specify the sample count 1 to 2000 and press ENTER Setting sample count using remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following command to set the sample count SAMPle COUNt lt n gt lt n gt 1 to 2000 Sample count Trigger count For remote operation the trigger count up to 2000 specifies how many times the sample count measurements can be performed Trigger count is ignored for front panel operation The trigger count is stored in volatile memory It defaults to one 1 when instrument power is turned off and then turned on again Setting trigger count using remote operation
72. 2110 2 Press the TEMP and CONFIG keys 3 Select the sensor a Use the lt or gt key to display SENSOR and press ENTER b Use the lt and gt keys to display the sensor and press ENTER Note If you select the NTCT SPRTD or USER sensor you will be need to enter coefficient values See Entering sensor coefficients on page 3 19 for details 4 Select the measurement units a Press CONFIG use the gt key to display UNITS and then press ENTER b Use the lt or gt key to display the units C F or K and press ENTER 5 Select the transducer type 2 wire or 4 wire a Press CONFIG use the gt key to display TRANSDUCER and then press ENTER b Use the lt or gt key to display the transducer type 2W RTD or 4W RTD and press ENTER 6 Observe the temperature reading on the display 2110 901 01 Rev A July 2012 3 17 Section 3 Basic DMM operation 3 18 Connections to measure temperature using an RTD The following figure shows how to connect RTD probes to the instrument For the 3 wire probe make sure to connect the SENSE LO terminal to the INPUT LO terminal Source current flows from INPUT HI to INPUT LO as shown in the following figure Figure 22 Connections for RTD measurements SENSE a4aw TC INPUT INPUT vat FUSE FUSE 3A 250V 15A 250V CATI 1000V CAT II 800V 7L CATI 100V ATI 600v L RANGE 2110 901 01 Rev A July 2012 Model 2110 5 Digi
73. 3 00e 04 x 1 00e 08 Q 3 00e 04 Therefore lt resolution gt 30 to 3 00e 04 for the Q2 and 04 1 00e 08 Q range 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Bandwidth and resolution for AC measurements An AC filter is used for ACV and ACI measurements The AC filter affects measurement speed As shown in the table below there are three bandwidth settings for the AC filter Slow medium and fast The slow AC filter is used for higher accuracy while the fast filter is used for fast settling time The medium filter is a compromise between accuracy and speed The default bandwidth setting is 20 Hz medium Bandwidth and resolution can be set from the front panel or by using remote programming The default AC filter is 20 Hz medium The AC bandwidth setting is stored in volatile memory The medium setting is restored when power to the instrument is cycled AC filter bandwidth Bandwidth AC filter 3 Hz to 300 kHz 7 s per reading 20 Hz to 300 kHz 1 s per reading 200 Hz to 300 kHz 0 1 s per reading The AC filter can be set from the front panel or remote operation Front panel operation Perform the following steps to set the AC filter 1 Press the ACV and CONFIG keys 2 Use the lt or gt key to display BAND WIDTH and press ENTER 3 Use the lt or gt key to display the bandwidth setting 3 Hz 20 Hz or 200 Hz and press ENTER Perform the followin
74. 5 19 CAL Culate SUBSY SEIN amaeana seoa e RE 5 28 DISP lay SUDSY SIO scnice oii veers tec nene ei cetlecdhcaislenelneene 5 34 INPUT SUBSYSTEM ioios oara 5 35 SENSE SUBSYSTEM roris cori sipor Ei ur essre ESENS EEREN 5 37 SVS Tem subsystem aaaeeeaei ii 5 66 TRIGger SUBSYSTEM saiit oiriu ancire neoa 5 67 Programming syntax The information in this section describes syntax for both common commands and Standard Commands for Programmable Instruments SCPI For information that is not described here see the IEEE 488 2 and SCPI standards Command format used in this manual The format used to show commands in this manual is described in the following topics Command syntax The command syntax shows most commands and some parameters as a mixture of upper and lowercase letters The uppercase letters indicate the abbreviated spelling for the command For shorter program lines send the abbreviated form For better program readability send the long form For example in the following syntax statement VOLTage DC RANGe lt range gt MINimum MAXimum VOLT and VOLTAGE are both acceptable forms You can use upper or lowercase letters Therefore VOLTAGE volt and Volt are all acceptable Other forms such as VOL and VOLTAG will generate an error Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual 5 2 Long form and short form versions A SCPI command word can be sent in its long form or short form version Fo
75. Appendix B Status model Using the Message Available Bit MAV The Output Buffer holds response messages Response messages are the messages sent in response to query commands When a response message is placed in the Output Buffer the Message Available Bit MAV B4 in the Status Byte Register sets A data message is cleared from the Output Buffer when it is read The Output Buffer is considered cleared when it is empty An empty Output Buffer clears the MAV bit in the Status Byte Register A message is read from the Output Buffer by addressing the instrument to talk after the appropriate query is sent Use the READ command to initiate measurements after the trigger conditions are met Use the INITiate command to store readings in the instrument s internal memory Use the FETCH command to transfer readings to the instrument s Output Buffer When the instrument takes the first reading in response to a READ command the MAV bit is set indicating that a message is in the Output Buffer Service request The generation of a service request is controlled by the Status Byte Enable Register This register is programmed by you and is used to enable or disable the setting of bit B6 RQS by the Status Summary Message bits B3 B4 B5 and B7 of the Status Byte Register The summary bits are logically ANDed amp with the corresponding enable bits of the Status Byte Enable Register When a set 1 summary bit is ANDed with an enabled 1 bit of t
76. B result Front panel operation Perform the following steps to use the dBm function 1 Select the DCV or ACV function 2 Press the SHIFT and NULL MATH keys 3 Use the lt and gt keys to display dB and press ENTER 4 Use the lt and gt keys to display dB REL and press ENTER Note that if you select the RUN menu option instead the dB function will enable using the present relative value 5 Use the lt gt A and Y keys to enter the reference resistance and press ENTER The MATH indicator turns on You can disable the math operation by pressing a different function key You can also disable it from the math menu as follows 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display OFF and press ENTER 2110 901 01 Rev A July 2012 3 55 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Remote operation NOJS Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to configure and control the dB math function CALCulate FUNCtion DB Select the dB math function CALCulate DB REFerence lt n gt Set the relative value lt n gt 0 to 200 00 Set value in dBm CALCulate STATe lt b gt Enable or disable math operations lt b gt 0 or OFF Disable math 1 or ON Enable math 3 56 2110 901 01 Rev A July 2012 Section 4
77. EEE PAE A E E A E E AA 5 9 IntrOdUCtiON to SCPI IAN GUAGE irsinin kisinin aiai nei 5 10 TODICOVOMIOW toiit E E a cee esareite 5 10 ii 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Table of Contents OCP Parameen WOES seisoa re anA a teste aes seaspetdansa sattas 5 10 Query COMIMANOS sebine ede ei e can eee ahead A 5 11 Progam MeS AES a a aaa E A O OOE i 5 11 OU Fe eB re PAE E ee pe era eet eer er eee eee TETE T EA T E EE yer E 5 13 SCPI signal oriented measurement COMMANAS cceecceeeteeeeeeeeeeeeeteeeeeseaeeeeaeeeeaeeteaes 5 14 CONFigure lt function gt lt range gt MIN MAX DEF lt resolution gt MIN MAX DEF 6 5 15 FETCHMIZI e derates etal e ehes tose ts ee lessne E E a ticle ans 5 16 INMATE oi ea ht el ee ees 5 17 SPREE ADMISI a E A tiastess 5 17 MEASure lt function gt lt range gt MIN MAX DEF lt resolution gt MIN MAX DEF ee 5 18 SCPI command subsystem reference ccccceccceeeeeceeneeeeeeeeeeeeeeeaaeseeaeeeeeeeeseaeeeeaaeseeaeeenaes 5 19 CALC ulate SUDSVSTS mM SUMMAN iiss sctencs i psicdassaeenscn paecvbassanauies E nveeaenecbasuentauteg annie 5 20 DISPlay subsystem SUMIMALY ceeceeeeeeeeeeesceeseeeeeseeetaeeeseeeeaeeeeseeeeeaeseaeeseaeeseseeetaeeseeeenaeeeeaes 5 21 INPUF subsystem SUMMAN ccna A E EE 5 21 SENSe Subsystem SUMMA eripere innon i E EE 5 22 STATUS SUbSyStEM SUMMAN srair an a E O a ioia 5 26 SAE e E E E A E E ET 5 26 TAIGJer SUB
78. Enable Registers B 10 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Appendix B Status model Questionable Data Register Bit Definition Decimal Description value 0 Voltage overload 1 Range overload on DC or AC volts frequency period diode or ratio function 1 Current overload 2 Range overload on DC or AC current function 2 Not used 4 Set to 0 3 Not used 8 Set to 0 4 Not used 16 Set to 0 5 Not used 32 Set to 0 6 Not used 64 Set to 0 7 Not used 128 Set to 0 8 Not used 256 Set to 0 9 Ohms overload 512 Range overload on 2 or 4 wire ohm function 10 Not used 1024 Set to 0 11 Limit Failed at LO 2048 Reading is less than the lower limit under limit test 12 Limit Failed at HI 4096 Reading is more than upper limit under limit test 13 Not used 8192 Set to 0 14 Not used 16384 Set to 0 15 Not used 32768 Set to 0 Status reporting command summary Refer to Status subsystem for information about status commands 2110 901 01 Rev A July 2012 B 11 Appendix C Communication interface In this appendix Communication interfaces ccccsssssssssssessssseseeeeeeeeeeeeeeees C 1 Communication interfaces This section shows you how to connect instruments to the following communication interfaces e Universal serial bus USB e General purpose interface bus GPIB or IEEE 488 It describes how to configure and troubleshoot
79. Hz line power 1 PLC 1 60 0 0167 s per measurement conversion The relationship among display resolution integration time and reading resolution is shown in the table below When you set the integration time the instrument automatically updates the reading resolution For example if for the 100 VDC range you set the integration time to 0 006 PLC the display resolution sets to 4 digits and the reading resolution automatically sets to 0 02 0 0002 x 100 V The default integration time setting is 1 PLC Integration time and resolution settings for DCV time operation 2110 901 01 Rev A July 2012 3 41 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual 3 42 Front panel operation Perform the following steps to set display resolution 1 Select the DCV DCI Q2 or Q4 measurement function 2 Use the DIGITS key to set display resolution Each key press toggles the display between 41 2 and 5 digits Perform the following steps to set the integration time speed 1 Select the DCV DCI Q2 or Q4 measurement function 2 Press the CONFIG key use the lt and gt keys to display NPLC and press ENTER 3 Use the lt and gt keys to display a PLC value and press ENTER Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and Max selects the maximum value Use the following commands to set the
80. I 600v 7L 1 Display The instrument display has a primary and a secondary display area There are additional indicators at the upper side top and right side of the display to show the state or the condition of an ongoing measurement They are explained individually in the following sections The following figure shows the display with all indicators lit and all character segments lit Figure 9 Display Primary display Indicators ADR RMT MAN TRIG EXT HOLD MEM MATH FILT SHIFT ERR RAT gt 4W EH EM IN ON OM DN ON DN EEN Oe ECE EELELELELL ES Secondary display 2 6 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 2 General overview Primary display The primary display shows readings and units The primary display can show a maximum of 11 characters Secondary display The secondary display shows the range of the measurements condition secondary readings and units or information about an ongoing configuration The secondary display can show a maximum of 16 characters Indicators When you are using the instrument the lit indicators show active functions For example in the following figure the MAN indicator shows that the manual range is selected and the 2nd indicator shows that the second function is in use Figure 10 Display typical The following table describes the meaning of each lit indicator Indica
81. Keithley I O Layer software requires that these components if present be compatible versions The installation utility will detect a mismatch which must be corrected before the software installation can proceed If this situation is detected the Keithley I O Layer software installation will automatically stop The recommended way to resolve this situation is to install the IVI Compliance Package ICP software from National Instruments NI You may download the ICP software and release notes from National Instrument s website When the ICP installation is complete restart the Keithley I O Layer software installation Non National Instruments VISA detected VISA software is used to communicate with the instrument and may be installed by various test and measurement software applications instrument drivers and so on Keithley I O Layer software requires and will install National Instruments NI VISA software The installer will detect if another vendor s version of VISA is already installed on the computer If this occurs the installer will pause and display a warning message The warning message displays the vendor of the detected VISA in its title bar if this can be determined Make a note of the vendor name At this point you may elect to continue the installation which will overwrite the existing VISA installation with NI VISA This will allow the Keithley I O Layer software to operate properly but may cause other applications or in
82. Multimeter Reference Manual 2 24 Viewing system version The Model 2110 system version is a number that indicates the version of firmware installed on each of the instrument s processors To view the system version use the following procedure 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the and lt keys to display SYSTEM and then press the ENTER key 3 Use the and lt keys to display SYSTEM VER and then press the ENTER key The display shows numbers in the following format X XX YVYy ZZ Where x xx indicates the measurement processor yy indicates the I O processor zz indicates the front panel processor Viewing calibration information The Model 2110 can show the date of the last calibration on the display To view calibration information use the following procedure 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the left and right arrow keys to display CALIBRATE and then press the ENTER key 3 To view the number of calibrations use the gt and lt keys to display CAL COUNT and then press the ENTER key The display shows the number of calibrations 4 To view the date of the last calibration use the and lt keys to display CAL DATE and then press the ENTER key The display shows the date of the last calibration in the following format mm dd yyyy Where mm month dd day and yyyy year 2110 901 01 Rev A July 2012 Section 3 Basic
83. Myneere CO mett 6 getchar return 0 VISA COM sample code This example gets the instrument identification string using VISA COM in C C 20 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface The first thing to do is add a reference to the VISA COM interop DLL which is usually located at C Program Files IVI Foundation VISA VisaCom Primary Interop Assemblies Ivi Visa Interop dll using Ivi Visa Interop namespace WindowsApplicationl public class IdnSample System Windows Forms Form private Ivi Visa Interop Formatted1I0488 ioDmm private void IdnSample_Load object sender System EventArgs e ioDmm new FormattedI0488Class SetAccessForClosed private void btnInitIO_Click object sender System EventArgs e try ResourceManager grm new ResourceManager ioDmm IO IMessage grm Open GPIB 16 INSTR AccessMode NO_LOCK 2000 ioDmm 10 TerminationCharacterEnabled true catch SystemException ex MessageBox Show Open failed on this txtAddress Text ex Source ex Message IdnSample MessageBoxButtons OK MessageBoxIcon Error los ioDmm IO rauldl dk 2110 901 01 Rev A July 2012 C 21 Specifications are subject to change without notice All Keithley trademarks and trade names are the property of Keithley Instruments Inc All other trademarks and trade names
84. NCtion2 VOLTage DC Selects DCV as secondary function Use the following commands to select a primary or secondary function FUNCtion 1 2 VOLTage DC DCV function FUNCtion 1 2 VOLTage AC ACV function FUNCtion 1 2 CURRent DC DCI function FUNCtion 1 2 CURRent ACc ACI function FUNCtion 1 2 FREQuency FREQ function FUNCtion 1 2 FREQuency VOLT FREQ function voltage input FUNCtion 1 2 FREQuency CURR FREQ function current input FUNCtion 1 2 PERiod PERIOD function FUNCtion 1 2 PERiod VOLT PERIOD function voltage input FUNCtion 1 2 PERiod CURR PERIOD function current input FUNCtion 1 2 RESistance Q2 function FUNCtion 1 2 FRESistance Q4 function FUNCtion 1 2 CAPacitance Capacitance function FUNCtion 1 2 TEMPerature TEMP RTD function FUNCtion 1 2 TCOuple Thermocouple function FUNCtion 1 2 NONE Disable second function FUNCtion 1 2 Query the selected primary or secondary function Triggering and data buffer Triggering is used to initiate one or more measurements by the instrument digital multimeter Up to 2000 readings can be stored in the data buffer memory You can control instrument trigger operation from the front panel or through a remote interface Front panel triggering There are two trigger modes for front panel operation Auto triggering and single triggering 3 28 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimet
85. NSE INPUT vo3tk a4w AC voltage signal RANGE AC current signal Input impedance 1 MQ in parallel with lt 100 pF 2110 901 01 Rev A July 2012 3 13 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual 3 14 Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to select the function frequency or period set a measure range set resolution and perform a measurement FUNCtion FREQuency Select frequency function FUNCtion FREQuency VOLT Select frequency function voltage input FUNCtion FREQuency CURR Select frequency function current input FUNCtion PERiod Select period function FUNCtion PERiod VOLT Select period function voltage input FUNCtion PERiod CURR Select period function current input FREQuency VOLTage RANGe lt n gt Set AC voltage range for frequency function FREQuency CURRent RANGe lt n gt Set AC current range for frequency function PERiod VOLTage RANGe lt n gt Set AC voltage range for period function PERiod CURRent RANGe lt n gt Set AC current range for period function lt n gt 0to 750 Expected AC voltage level of the signal lt n gt 0to10 Expected AC current level of the signal FREQuency VOLTage RANGe AUTO lt b gt Frequency autorange for voltage input FREQuency CURRent RANGe A
86. RTD type SENSe TEMPerature RTD BETA MIN Query the minimum beta constant for the user defined RTD type SENSe TEMPerature RTD BETA MAX Query the maximum beta constant for the user defined RTD type Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about RTD type RTD coefficients and temperature calculation on page 3 19 2110 901 01 Rev A July 2012 5 55 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe TEMPerature RTD DELTa lt n gt MIN MAX Use this command to select the delta constant for the user defined RTD type Parameters lt n gt description Delta value Select the delta constant value MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature RTD DELTa Query the delta constant for the user defined RTD type SENSe TEMPerature RTD DELTa MIN Query the minimum delta constant for the user defined RTD type SENSe TEMPerature RTD DELTa MAX Query the maximum delta constant for the user defined RTD type Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about RTD type RTD coefficients and temperature calculation on page 3 19 SENSe TEMPerature RTD TYPE lt name gt Use this command to select the RTD sensor
87. Ri s zC A tA UNIT SUNIT TCOu ESolution lt n gt MIN MAX ESolution MIN MAX PLCycles lt n gt MIN MAX PLCycles MIN MAX uency VOLTage RANGe lt n gt MIN MAX MIN MAX AUTO lt b gt AUTO URRent RANGe lt n gt MIN MAX MIN MAX PERture lt n gt MIN MAX PERture MIN MAX od VOLTagle RANGe lt n gt MIN MAX MIN MAX AUTO lt b gt AUTO URRent RANGe lt n gt MIN MAX MIN MAX PERture lt n gt MIN MAX PERture MIN MAX lt name gt ple TYPE lt name gt iR TEMP 5 24 JUNction RSELect lt name gt RSELect SIMulated lt n gt MIN MAX SIMulated MIN MAX REAL lt n gt MIN MAX REAL MIN MAX erature Specify resolution lt n gt 3 00e 07 to 3 00e 04 of range MIN or MAX Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more information about valid values for n Query the fresistance resolution Specify the integration time in number of power line cycles for the selected function 0 02 0 1 1 2 10 100 MIN or MAX Query NPLCycles Path to configure frequency Path to configure voltage Voltage is the default Specify range 0 to 750 MIN or MAX Query range Enable or disable auto range Where 0 OFF and 1 ON Query auto range setting Path to configure current Specify range Qu
88. Riod VOLTage RANGe AUTO lt b gt eee cee tee eee eter tees tee teeeteeeeaeeeaeteaeseneeaaes 5 50 SENSe RESistance RANGe lt n gt MIN MAX eccceesceesceeeeeseeeeseeeseeeeeeeneeenneenenenenenes 5 50 SENSE RESistance RANGE AUTO be ac sciecirscecterseciecins prsttesusietucmectorieetecta Beeteeetees 5 50 SENSe RESistance RESolution lt m gt MIN MAX i iisiacscivesnssestetestisetevenesentsenasetsetanatees caettenesees 5 51 SENSe RESistance NPLCycles lt n gt MIN MAX s cccesseeseeteseeeseeeseneeeeeeeteaeeeneeeteaeeenenetes 5 52 SENSe TCOuple RJUNction REAL lt n gt MIN MAX 00 eeeeceeeseeeeeeeeeseeeeeeeeeeeeseeeeaeeseaeeeeaeeees 5 52 SENSe TCOuple RIUNCHOMASELSCt NAMES eei e aai 5 53 SENSe TCOuple RJUNction SIMulated lt n gt MIN MAX 0 ccscceesceeeeeeeeeeeeereteneeeeeeseeeeeeeees 5 53 SENSe TGOupIe TYPE NAME Sinnani ioe sented aise cies 5 54 SENSe TEMPerature RTD ALPHa lt n gt MIN MAX 0 2cceeceeeeeee sees eeeeeeeeeeeneneeeaeeeeeeeeerenes 5 55 SENSe TEMPerature RTD BETA lt n gt MIN MAX eee cee eee ceeceee tees tee teeeeaeteaeteaeteaeteaes 5 55 SENSe TEMPerature RTD DEL Ta lt ri gt MIN MAX wccsicscse sntutdec shaciapcmnaccdacabenites deletes Hee nen 5 56 SENSe TEMPerature RTD VRE lt NaAME sairin pnn paa a a a A a EE TE 5 56 SENSe TEMPerature RTD RZERO lt n gt MIN MAX ccceceeeeeeeeeeeeeeeeteeeseeeeeaeeeeaeeteeeseeetes 5 57 SENSe TEMPerature SPRTD RZEROo lt n
89. SE INPUT a4w va gt A CATI 1000V_ CAT Il 600V 7L 2110 901 01 Rev A July 2012 3 23 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Remote operation NOJS Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to configure temperature measurements UNIT lt name gt Set temperature units lt name gt Cel Celsius Far Fahrenheit K Kelvin TCOuple TYPE lt name gt Select the thermocouple type lt name gt B C E J K N R S or T TCOuple RJUNction RSELect lt name gt Select the reference junction lt name gt REAL Real reference junction SIMulated Simulated reference junction TCOuple RJUNction SIMulated lt n gt Set simulated reference temperature lt n gt 100 to 100 Celsius Use the following command to measure temperature and acquire the reading MEASure TCouple Capacitance measurements The measurement ranges for capacitance measurements are 1 nF 10 nF 100 nF 1 uF 10 uF 100 uF 1 mF and 10 mF Front panel operation Perform the following steps to measure capacitance 1 Connect the capacitance to the Model 2110 as shown below 2 Press the SHIFT and FREQ 4 keys 3 Select a measurement range auto or manual e Autorange is the power on default If manual ranging is selected MAN indicator on press SHIF
90. SYSISM SUMMA seiat naa a aia a aeoaea 5 27 CGALC lateSUDSYStE nna EA EEE A A AIRE 5 28 CALGulate AVERIGE AVERA JE sorosiane EE AEA R AE A a ENAR 5 28 CALCUIRS AVERI JE COUNE eogi orrore e eE S RE 5 28 CAL Gulate AVERage MINIMUM sreiiesisiipioiicn oi inia ees 5 28 CALC ulatesAV E Rage MAXIMUM seiras ennan een ee PEER EE E EE R OE EE 5 28 CALCulate DB REFerence lt n gt MIN MAX cceecceseeeeeeeeeeeeeeeeeeeseneeeseeeseaeeeaeeseaeeeseeeseaeeeaees 5 29 CALCulate DBM REFerence lt n gt MIN MAX c ccceceeseseseeeeeseeeseaeeeseeeseaeeesaeesaeeeaeeseaeeeaees 5 29 CAL Gulate FUNCTION NAME Ssn cs nearsviratecdvs HasrexsediecieeMeucty sandastes Aaeceveend ESRA 5 30 GAL Culate LIMitLOWer lt iis MIN MAX s scctscccsec covtccsteesecesteten i ninie aa 5 30 CALCulate LIMit UPPer lt n gt MIN MAX eesceceseeeeeeeeeeeeaeeseaeeseaeeseaeeseaeessaeeseaeeseaeeseaeensaees 5 31 CALGulate MXBMBFactor lt n gt MIN MAXK ciiccccccesssicssacesascontatsasgitescesqnaciaasenssseacndabanctilecaa sshdae 5 31 CALCulate MXB MMFactor lt n gt MIN MAX eeceeesceeeneeeeeeeceaeeeeaeeseaeeseaeeseaeeseaeeseaeeteaeeteaees 5 32 CALGulate NULLSOFFSet ans MIN MAX nisione e 5 32 CALCulate PERCent TARGet lt n gt MIN MAX ccceseeseeseeeeeseeeseaeeeeeeseaeeesaeeneaesesaeeneaeeeaees 5 32 CAG ulate STATE DS sce iacsocsend caseaies siccnses Levobvecaveassepdacel geo uescrabe lcnsadesanageqesdeesiaeanrcorguntesdoresseces 5 33 DATA FEED RDG STORE GAL Cul
91. T PERiod CURRent CAPacitance Specify expected reading 1000 to 1000 0 to 750 10 to 10 0to10 0 to 100e6 0 to 100e6 0 to 750 0to 10 0 to 750 0to10 0 to 10e 3 Enable or disable autorange 0 or OFF 1 or ON Volts DC Volts AC Amps DC Amps AC Ohms 2 wire Ohms 4 wire Volts AC voltage input Amps AC current input Volts AC voltage input Amps AC current input Farads Disable autorange Enable autorange 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Resolution and integration time Integration time can be set for the following measurement functions e Number of power line cycles NPLC can be set for the DCV DCI Q2 and 4 functions e Bandwidth can be set for the ACV and ACI functions e Aperture can be set for the FREQ and PERIOD functions Model 2110 has both 5 2 digit and 4 digit display resolution on the front panel for the following measurement functions DCV DCI ACV ACI Q2 04 FREQ PERIOD TEMP RTD and TCOUPL The actual reading resolution acquired using remote operation can only be set for DCV DCI ACV ACI Q2 and 04 Integration time and resolution for DC and resistance measurements Integration time for DCV DCI Q2 and Q4 measurements is expressed as the number of power line cycles NPLC For 50 Hz line power 1 PLC 1 50 0 02 s per measurement conversion For 60
92. T and ESC AUTO to select autorange e For manual ranging press the RANGE A and Y keys to select a measurement range 4 Observe the reading on the display 3 24 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Connections to measure capacitance Figure 24 Connections for capacitance TC INPUT SENSE INPUT o4w voa gt 4F Measure capacitance FUSE 15A 250V CATI 1000V CATI 600V L Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to select the capacitance function set a measure range and perform a measurement FUNCtion CAPacitance Select capacitance function CAPacitance RANGe lt n gt Set capacitance range lt n gt 0 to 10e 3 Specify expected capacitance reading CAPacitance RANGe AUTO lt b gt Enable or disable autorange lt b gt 0 or OFF 1 or ON READ Perform measurement and acquire reading Measurement configuration commands can also be used to perform measurements Use the following command to select the capacitance function set the measure range set display resolution perform a measurement and acquire the reading MEASure CAPacitance lt range gt lt resolution gt lt range gt 0 to 10e 3 Expected capacitance reading NOTE Resolution is ignored
93. UTO lt b gt Frequency autorange for current input PERiod VOLTage RANGe AUTO lt b gt Period autorange for voltage input PERiod CURRent RANGe AUTO lt b gt Period autorange for current input lt b gt 0 or OFF Enable autorange 1 or ON Disable autorange READ Perform measurement and acquire reading Measurement configuration commands can also be used to perform measurements Use the following commands to select a function frequency or period set measure range set measurement resolution perform a measurement and acquire the reading MEASure FREQuency lt range gt lt resolution gt MEASure PERiod lt range gt lt resolution gt lt range gt 0 to 750 Expected AC voltage level of the signal NOTE Resolution is ignored for frequency and period 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Continuity measurements The instrument uses the 1 kQ range and 5 digit resolution to measure continuity The instrument beeps when the test resistance is less than the threshold resistance The default threshold resistance is 10 Q but can set from 1 Q to 1 KQ The resistance value you set is stored in volatile memory and is lost when the instrument is turned off The source current for continuity measurements is 1 mA A WARNING Do not apply more than 1000 V peak to the Model 2110 Applying higher voltage creates an electric shock hazard which could cause perso
94. Wizard Operations Add Change Delete C Test V Show this wizard on startup Cancel lt Bach Next gt Finish 3 Click Next The Select Communication Bus dialog box is displayed C 2 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface Figure 39 Select Communication Bus dialog box Keithley Add Wizard Select Communication Bus Select the Communication Bus connecting this computer to the physical instrument Press Next to continue Press Cancel to quit this operation Cancel lt Bach _ next gt Finish kE 4 Select USB 5 Click Next The Select Instrument Driver dialog box is displayed 2110 901 01 Rev A July 2012 C 3 Appendix C Communication interface Model 2110 5 Digit Multimeter Reference Manual Figure 40 Select Instrument Driver dialog box Keithley Add Wizard Select Instrument Driver Select the Instrument Driver Model of the physical instrument Select Auto detect Instrument Driver Model to have this Wizard choose an appropriate driver You must connect and power the physical instrument Press Next to continue Press Cancel to quit this operation Instrument Driver Model Auto detect Instrument Driver Model Cancel lt Back Next gt Finish 6 Select Auto detect Instrument Driver Model 7 Click Next The Configure USB Instrument dialog box is displayed
95. ace Model 2110 51 Digit Multimeter Reference Manual Installation troubleshooting If problems occur during installation it might be helpful to install the components individually Errors messages might appear that will help you resolve the installation issue If problems occur during installation 1 Follow the instructions to uninstall all the KIOL components in Special installation considerations on page C 16 2 Rerun the KIOL installer Note where the installer unpacks the files usually in a temporary folder 3 Cancel the installer 4 Go to the folder where the files were unzipped 5 Run the setup exe for each of the following components in the following order e IVI Compliance Package ICP e NI VISA Run Time Engine e KIOL e Keithley SCPI Driver 6 Ignore all the other folders 7 Reboot the computer Modifying repairing or removing Keithley I O Layer software The Keithley I O Layer interconnects many other installers To remove all the KIOL components you need to uninstall the following applications using Control Panel Add Remove programs e National Instruments NI IVI Compliance Package e National Instruments NI VISA Run Time Engine e IVI Shared Components e Visa Shared Components e Keithley SCPI Driver After uninstalling components reboot the computer Addressing instruments with VISA VISA allows you to communicate with the instrument on different communication buses by changing a re
96. ach address of RAM U1701 Any incorrect read back will cause a test failure This error is only readable from the remote interface 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 6 Troubleshooting quide Error code Type Description 603 Front End MCU does not respond ST The main CPU U1601 attempts to establish serial communications with the front end processor U2001 Communication must function in both directions for this test to pass 604 A D noisy test failed ST This test configures to the 10 V DC range with the internal 0 V A 20 ms ADC measurement is performed and the result is checked against a limit of O V 20 pV 605 N2 calibration parameter failed ST This error message indicates that N2 calibration parameter is out of range 606 N3 calibration parameter failed ST This error message indicates that N3 calibration parameter is out of range 607 Buffer1 offset out of range 608 Buffer2 offset out of range ST ST This procedure is to test the offset of buffer U507 The result is checked against a limit of 0 0 1 mV This procedure is to test the offset of buffer U508 The result is checked against a limit of 0 0 1 mV 609 DC gain x1 failed ST This procedure is to test the tolerance of DC gainx1 amplifier The limit of gain tolerance is 0 005 610 DC gain x10 failed ST This procedure is to test the toleran
97. after selecting DC voltage function press Config to enter the configuration menu for the DC voltage function Shift key The SHIFT key is blue All keys have a shifted function or operation printed in blue above the key The SHIFT key allows you to perform the shifted function or operation Shifted keys To perform a shifted function or operation press SHIFT and then press the key with the label for the function you want to perform printed above it The procedures in this manual that require you to use a shifted key sequence list the key name followed by the shifted key name in parentheses For example to measure AC current press SHIFT and then press the ACV ACI key See the following figure for the location of the keys Figure 12 Function and operation keys Function key Shifted function TCOUPL 2 DCI ACI Q4 dk gt ND AUTO HOLD RECALL FILTER MATH LOCAL MENU AUTO STORE DIGITS NULL jullie Revel late Gg Shift key 2110 901 01 Rev A July 2012 2 9 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual 2 10 The following table describes the functions and shifted functions associated with each key The shifted functions are shown with a shaded background Key Function DCV Selects DC voltage measurement ACV Selects AC voltage measurement Q2 Selects 2 wire resistance measurement FREQ Selects frequency measurement
98. age 5 61 SENSe TCOuple RJUNction RSELect lt name gt on page 5 53 5 54 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands SENSe TEMPerature RTD ALPHa lt n gt MIN MAX Use this command to select the alpha constant for the user defined RTD type Parameters lt n gt description Alpha value Select the alpha constant value MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature RTD ALPHa Query the alpha constant for the user defined RTD type SENSe TEMPerature RTD ALPHa MIN Query the minimum alpha constant for the user defined RTD type SENSe TEMPerature RTD ALPHa MAX Query the maximum alpha constant for the user defined RTD type Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about RTD type RTD coefficients and temperature calculation on page 3 19 SENSe TEMPerature RTD BETA lt n gt MIN MAX Use this command to select the beta constant for the user defined RTD type Parameters lt n gt description Beta value Select the beta constant value MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature RTD BETA Query the beta constant for the user defined
99. ails RANGE AUTO Use gt and lt keys to select RANGE AUTO autorange or use gt and lt keys to display additional selections CONT 3 Press CONT key CONFIG Press the CONFIG key to configure the instrument for diode measurements VF LOW Refer to Diode measurements on page 3 15 for details VF high TEMP TCOUPL Press TEMP TCOUPL key CONFIG Press the CONFIG key to configure the instrument for thermocouple measurements TYPE Refer to Thermocouple measurements on page 3 22 for details UNITS Specify units for temperature measurement Cel means Celsius Far means Fahrenheit and K means Kelvin ENTER 2ND CONFIG OFF DCI 2 14 Press ENTER 2ND key Press the CONFIG key to configure the instrument for the dual measurement function Refer to Secondary function measurements see Secondary measurement function on page 3 26 for details Select OFF to turn off the dual measurement function off Select DCI to configure DC current as the second function 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 2 General overview Keys menus and selection Description NPLC RANGE ACV BAND WIDTH RANGI EJ FREQ APERTURE RANGE As ERIOD APERTURE RANGE TCOUPL TYPE UNITS RJUNCTION REAL SIMULATED VIEW REAL Use gt and lt keys to select resolution adjust
100. ails Use the TRG command as an event to control operation The instrument reacts to this trigger if BUS is the programmed arm control source The control source is programmed from the TRIGger subsystem 2110 901 01 Rev A July 2012 5 9 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual Introduction to SCPI language Topic overview This section contains reference information on programming the Model 2110 with the SCPI commands It is organized as follows SCPI parameter types The SCPI language defines several different data formats to be used in program messages and response messages Numeric parameters lt n gt Commands that require numeric parameters will accept all commonly used decimal representations of numbers including optional signs decimal points and scientific notation Special values for numeric parameters like MINimum MAXimum and DEFault are also accepted You can also send engineering unit suffixes with numeric parameters for example M K or u If only specific numeric values are accepted the instrument will automatically round the input numeric parameters The following command uses a numeric parameter VOLTage DC RANGe lt range gt MINimum MAXimum Discrete parameters lt name gt Discrete parameters are used to program settings that have a limited number of values for example BUS IMMediate EXTernal They have a short form and a long form just like command keywords
101. ameter The following are some examples SAV lt NRf gt Parameter NRf required RST No parameter used INITiate CONTinuous lt b gt Parameter lt b gt required SYSTem PRESet No parameter used Put at least one space between the command word and the parameter Refer to SCPI parameter types on page 5 10 for information about SCPI parameters Query commands This type of command requests queries the currently programmed status It is identified by the question mark at the end of the fundamental form of the command Most commands have a query form for example SAMP COUNt Queries the sample count Program messages A program message is made up of one or more command words sent by the computer to the instrument Each common command is simply a three letter acronym preceded by an asterisk SCPI commands are categorized in the STATus subsystem and are used to help explain how command words are structured to formulate program messages STATUus Path Root QUEStionable Path ENABle lt n gt Command and parameter ENABle Query command PRESet Command Single command messages The above command structure has three levels The first level is made up of the root command STATus and serves as a path The second level is made up of another path OPERation and a command PRESet The third path is made up of one command for the OPERation path The three commands in this structure can be executed
102. ance measurement and DC voltage ratio measurement 3A and 10A current Input terminals Use for all DC and AC current measurements 7 Menu overview The menus and submenus provide a way for you to configure system wide settings trigger settings remote interface configurations and calibration information 2110 901 01 Rev A July 2012 2 11 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual Menu navigation Selecting menus To select menus and submenus use the keys as follows e To navigate to the Main menu press SHIFT and then press CONFIG MENU e Press the gt lt keys to display submenus e Press ENTER to choose a submenu e lf there are additional submenus press the gt lt keys to display the submenu you want and then press ENTER to select it e f you need to change digits in a value press the A W keys to change each digit Refer to the next topic Setting a value on page 2 12 for more information about values e Atany time press ESC to cancel changes e When you are finished press ESC to back out of the menu structure Setting a value Values are numbers Some configuration options require values or if the configuration options have default values the values may need to be changed To change the values you adjust the value one digit at a time To adjust the digits use the A V keys as follows 1 Use the gt lt keys to display the value that you want to edit 2 Pres
103. and details about RTD calibration refer to NIST Technical Note 1265 Guidelines for Realizing the International Temperature Scale of 1990 In each subrange the calibration constants required for that subrange are listed Entering sensor coefficients There are three RTD sensor types that allow you to enter coefficient values for sensor parameters The coefficients are provided with the documentation supplied by the manufacturer of the RTD The following sensors allow you to enter coefficient values e NTCT sensor e SPRTD sensor e USER sensor 2110 901 01 Rev A July 2012 3 19 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual 3 20 Perform the following steps to enter coefficient values OO ae GOIN a Press the TEMP key Press CONFIG and with SENSOR displayed press ENTER Use the lt or gt key to display the sensor type NTCT SPRTD or USER and press ENTER Use the lt and gt keys to display an RTD parameter and press ENTER Use the lt gt A and Y keys to enter the coefficient value and press ENTER Repeat steps 4 and 5 Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value to set the coefficients for all the RTD parameters Use the following commands to select the RTD sensor type and set the measurement units T EFMPerature RTD TYPI
104. and is used to specify the upper limit for limit testing The actual limit depends on which measurement function is currently selected For example a limit value of 1 is 1V for the volts functions DCV or ACV 1A for the current functions DCI or ACI 1 Q on the ohms functions 2 wire or 4 wire and 1 C F or K for the temperature function A limit value is not range sensitive A limit of 1 for DCV is 1V on all measurement ranges Parameters lt n gt description 0 to 120 of the Set the upper limit for limit testing You can set the value to any number highest range from 0 to 120 of the highest range for the present function MINimum Set value to the minimum MAXimum Set value to the maximum Query command description CALCulate LIMit UPPer Query the upper limit for the limit testing CALCulate LIMit UPPer MIN Query the minimum upper limit CALCulate LIMit UPPer MAX Query the maximum upper limit CALCulate MXB MBFactor lt n gt MIN MAX This command is used to define the b factor for the mx b calculation Parameters lt n gt description Set a value for b The value is measurement function dependent MINimum Set value to the minimum MAXimum Set value to the maximum Query command description CALCulate MXB MBFactor Query the value of b CALCulate MXB MBFactor MIN Query the minimum value of b CALCulate MXB MBFactor MAX Query the maximum value of b 2110 901 01 Rev A July 2012 5 31 Sect
105. anual Keys menus and selection Description OFF Turn the math function off PERCENT Select to configure PERCENT Refer to Percent on page 3 47 for details RUN Select RUN to start the function TARGET Enter the target value using A V gt lt keys AVERAGE Select to configure AVERAGE Refer to Average on page 3 48 for details RUN Select RUN to start the function NULL Select to configure NULL Refer to Null on page 3 49 for details RUN Select RUN to start the function LIMITS Select to configure LIMITS Refer to Limits on page 3 51 for details RUN Select RUN to start the function HIGH LIMIT Enter the high limit value using A V gt lt keys LOW LIMIT Enter the low limit value using A V gt lt keys MX B Select to configure MX B Refer to MX B on page 3 52 for details RUN Select RUN to start the function SET M Enter the scale factor M value using A V gt lt keys SET B Enter the scale factor B value using A WV gt lt keys dB Select to configure dB Refer to dB on page 3 55 for details RUN Select RUN to start the function dB REL Enter the relative reference using A V gt lt keys dBm Select to configure dBm Refer to dBM on page 3 54 for details RUN Select RUN to start the function REF RES Enter the reference resistance using A V gt lt keys CONFIG MENU Press CONFIG MENU to se
106. are the property of their respective companies KENT HLEY A GIR EAT ER MEASURE G F CONFEDENCGCE Keithley Instruments Inc Corporate Headquarters 28775 Aurora Road Cleveland Ohio 44139 440 248 0400 Fax 440 248 6168 1 888 KEITHLEY www keithley com 12 06
107. are then reported to the Status Byte A 0 value clears the Questionable Data Enable Register ENABle Query the Questionable Data Enable Register The instrument returns a binary weighted decimal representing the bits set in the Questionable Data Enable Register EVENt Query the Questionable Data Event Register The instrument returns a decimal value which corresponds to the binary weighted sum of all bits set in the register Clear the Questionable Data Event Register PRESet Clear all bits in the Questionable Data Enable Register SYSTem subsystem summary Command Description SYSTem Path to system commands BEEPer Issue a single beeping tone STATe lt b gt Turn the beeper on or off Where 0 off and 1 on STATe Query state of beeper Returns 0 off 1 on ERRor Query the instrument s error queue Up to 20 errors can be stored in the queue Errors are retrieved in first in first out FIFO order Each error string may contain up to 80 characters LOCal Place the instrument in the local mode All keys on the front panel are fully functional REMote Place the instrument in the remote mode All keys on the front panel except the LOCAL key are disabled VERSion Query the present SCPI version DATA POINts Query the number of readings stored in the instrument s internal memory 5 26 2110 901 01 Rev A July 2012 Model 2110 5
108. asurements Use the following commands to select a function W2 or W4 set the measure range set measurement resolution perform a measurement and acquire the reading MEASure RESistance lt range gt lt resolution gt MEASure FRESistance lt range gt lt resolution gt lt range gt 0to 100e6 Expected ohms reading lt resolution gt See Note Measurement resolution NOTE The resolution setting range for lt resolution gt depends on the selected function and range The maximum value for DC measurement is 3 00e 04 x full scale range and the minimum value is 3 00e 07 x full scale range For example for the Q2 and 04 1 00e 08 Q range the minimum value is 3e 07 x 1 00e 08 Q 30 The maximum value is 3 00e 04 x 1 00e 08 Q 3 00e 04 Therefore lt resolution gt 30 to 3 00e 04 for the Q2 and 04 1 00e 08 Q range 2110 901 01 Rev A July 2012 3 11 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual 3 12 Frequency and period measurements The instrument measures frequency from 3 Hz to 300 kHz or 3 3 us to 333 ms using the AC voltage ranges 100 mV to 750 V or AC current ranges 1 A 3 A or 10 A A WARNING Do not apply more than 1000 V peak to the instrument Applying higher voltage creates an electric shock hazard which could result in personal injury or death It may also damage the instrument NOTE Use the following procedure and commands to perform basic measurements R
109. at is created using entirely built in LabVIEW VIs it does not make any calls to external DLLs or Library files This makes the driver portable to all the platforms and operating systems that LabVIEW and VISA supports currently Linux on x86 Mac OS X and Microsoft Windows National Instruments NI maintains a native LabVIEW driver style guide http zone ni com devzone cda tut p id 327 1 LabVIEW driver wrappers All IVI C drivers have a function panel file fp that shows a hierarchy of the function calls into a DLL It is a tool that guides a user to select the correct function call in the driver since a DLL only has a flat API entry point scheme unlike COM or NET Any CVI generated fp file can be imported into LabVIEW and LabVIEW will generate a wrapper for the DLL The drawback here is that the driver is dependent on the DLL which is not portable and is therefore Windows specific Obtaining instrument drivers To see what drivers are available for your instrument 1 Go to the Keithley Instruments support website http www keithley com support 2 Enter the model number of your instrument 3 Select Software Driver from the list For LabVIEW you can also go to National Instrument s website and search their instrument driver database 2110 901 01 Rev A July 2012 C 13 Appendix C Communication interface Model 2110 51 Digit Multimeter Reference Manual Instrument driver examples All Keithley dr
110. atie szssc sttssscsesssndendds tiataezelictdeste a aie a ieai 5 33 DISPlay SUSY SUSI preia aa aAA A ENARA 5 34 DISP Doe E E E cree re Te 5 34 DISPIay TEX T aS ecn E R EEN ATN ENI 5 35 DIS Play TEX TOLEA nenni ne e a O T 5 35 INGE SUBS y aa a a tie 5 35 INPUtIMPedanc AUTO Dinna R E i 5 36 SENSE SUBSYSTEM ersun SEE aE E E ES SEa rE 5 37 SENSe AVERage COUNtens MIN MAX nenni oa a 5 37 ISENSe JAVERage STATE LDS er Enone rE EEE ikr EEE URAN A C ERI DANEI SEPAR AERA 5 37 SENSe AVERage TCONtrol lt name gt eccececeeeeeeeeeeeeeeeeceeeeeneeeceeeeeeesaeeseaeeeseeeeeeesieeseneeens 5 38 SENSe CAPacitance RANGe lt n gt MIN MAX 00 eeeeeseeeeeeeeeseeeeeeeeeeeeeaeeeeseeeesaeeeaeeesaeeeeaeeen 5 38 SENSe GAPacitance RANGE AUTO cle sonimine rener e Oaa EEAS eE SRNA REEE 5 39 SENSe CURRent AC RANGe lt range gt MIN MAX ceeeceeseeeeseeeeseeeeeeeeeeessaeeeaeeseaeeseaeeees 5 39 SENSe CURRent AC RESolution lt n gt MIN MAX cc cceesceeeseeeeseeeeeeeeeeeseeeeeeeseaeeeeeeeeeeen 5 40 SENSe CURRent DC NPLCycles lt n gt MIN MAX c ceccceeeeeeeeneeeeeeeteeeeeaeeteaeeeeaeeteaeeeeaeene 5 41 SENSe CURRent DC RANGe lt n gt MIN MAX 0 ceeeeeeeeeeeseeeeeeeeeeeeeeseeseseeeeaeeseaeeeeaeeeeeeens 5 41 SENSe CURRent DC RESolution lt r gt MIN MAX wij ssicisiccdeteecesveideiecteseieaietidacetiniceneeadec meses 5 42 SENSe CURRent AC RANGEIAUTO lt bs wae ccsccchicccnencesicceshived iesonvidesieivuisentedies cet ieimoktini
111. ator will be lit This indicator does not mean the display is turned off but only that the acquired readings will not be sent to the display Turning off the display accelerates the measurement process because there is no input output delay Turning off the display does not affect the messages displayed from the RECALL MENU and CONFIG front panel operations You can always send a message through the remote interface from your computer to the secondary display and it will replace the original message Measurement display is on by default If you turn the measurement display off it stays off until you turn it back on or you turn the instrument power off and then turn it on again You can control the display through the front panel or through the remote interface The remote interface operation overrides the front panel setting 2 20 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 2 General overview Front panel operation To turn the measurement display on or off use the following procedure 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the gt and lt keys to display SYSTEM and then press the ENTER key 3 Use the gt and lt keys to display DISPLAY and then press the ENTER key 4 If you want to turn the measurement display on use the gt and lt keys to display ON and then press the ENTER key Go to Step 6 5 If you want to turn measurement display
112. cation interface For the KUSB 488A GPIB controller from Keithley Instruments the configuration utility is called TrTest It is available from the Microsoft Windows Start Menu at Keithley Instruments gt GPIB 488 CEC gt TrTest For National Instruments NI GPIB controllers you can use NI MAX Start NI MAX If your hardware is installed correctly you will see the controller in the GPIB section of the tree control on the left side Select it and right click to see an option to communicate with the instrument NOTE If you want to use the GPIB controller with an instrument driver such as VXIPnP or IVI or high level software you must also install I O software which installs the VISA layer See How to install the Keithley I O Layer on page C 16 Terminator When receiving data over the GPIB the instrument terminates on any line feed character or any data byte with EOI asserted line feed with EOI asserted is also valid When sending data through the GPIB drivers it is not necessary to append a line feed character to all outgoing messages The EOI line is asserted with the last character sent However if you want your program to communicate with all I O buses on the instrument GPIB and USB it is good practice to add a line feed to the end of the outgoing command Use VISA and the same program will work with all the I O buses by just changing the resource string in the VISA Open method Front panel GPIB operation
113. ce of DC gainx10 amplifier The limit of gain tolerance is 0 05 611 DC gain x100 failed 612 Ohms 500 nA source failed ST ST This procedure is to test the tolerance of DC gainx100 amplifier The limit of gain tolerance is 0 5 This test configures to the 10 V DC range with the internal 10 M 100 1 divider R204 connected across the input The 500 nA ohms current source is connected to produce a nominal 5 V signal A 20 ms A DC measurement is performed and the result is checked against a limit of 5V 1V 613 Ohms 5 uA source failed ST This test configures to the 1000 V DC range with the internal 10 M 100 1 divider R204 connected across the input The 5 uA ohms current source is connected The compliance limit of the current source is measured A 20 ms A DC measurement is performed and the result is checked against a limit of 0 12 V 0 01 V 614 DC 1000V zero failed ST This test configures to the 1000 V DC range with no input applied A 20 ms A DC measurement is performed and the result is checked against a limit of OV 5 mV 615 Ohms 10 uA source failed ST This test configures to the 1000 V DC range with the internal 10 M 100 1 divider R204 connected across the input The 10 uA ohms current source is connected The compliance limit of the current source is measured A 20 ms A DC measurement is performed and the result is checked against a limit of 0 12 V 0 01 V 616 DC current sense failed
114. characteristics ACCULACY cc ccceceeeeceeesneceeeeneeeeseeeeeesseeeeseeeeeseteeess 4 5 Remote COUN AOE sss cts cs elas A E eesti 5 1 Programmani IS VMAX ea r E EE E 5 1 Command formatused inthis manualas i a ehatebhvica aia 5 1 Gommon command Sissin aaan typist naiai 5 4 Common command SUMMaATY sorsra arn e E A E E N 5 5 Common command reference eccccesceeeseeeeseeeeeeseaeeeeaeeeeaeeseaeeseaeeeeaeeseaeeseaeeseaeeseaeeseaeeteaeeee 5 6 OLS lear SUS E E E E 5 6 ESE lt NRI gt pven enable COMMANG scccecctiuse tesorans sttacceececetavecenestteteniar AE NE TAA 5 6 ESE evenbenable Query coes eiceta n E SE R ECE ace 5 6 ESR event status register guerrero nrnna RAR ORO R Ri EA 5 6 IDN identification QUCLY cceseeceseeeceeteseeeeaeeceaeeeaeeteaeeenaeeseaeeesaeeseaeeeeaseceaeeseaeeteaeeeeaeees 5 7 OPC operation complete Command 2 4 yosteduesevdactegn secdeses aiee oE a a E Erai 5 7 OPC operation Complete GUEY srecno e anaa aE 5 7 PSC lt bs power on status clear iiien n en E iN 5 8 POG Poweron Status clear GUE nir En anin EEn nA LARO denen teariianetiaeantats 5 8 Ror teselcomMmand siede aoa e a EE 5 8 SRE lt NRf gt service request enable COMMANGA ccsceeesceteteeeeeeeteeeeeaeeteaeeeeaeeteaeeenaeete 5 9 SRE service request enable command query cceeceeeseteeeeteneeeeeeteseeteaeeteaeeteaeeeeaeeees 5 9 Sl SaS byi GUE ae a aE E a eG tedeesngatade 5 9 i fh N
115. chehs 5 42 SENSE JCURRent DC RANGE AUTO bres cs scssccsrscetetescsseteastinacismmaihnannnie ant 5 43 SENSe DE Tector BANDwidth lt ins MIN MAX 6s cjscscscscesctcssceessceiscecasscgenseccadeesescadacctaghieinsestaae 5 43 SENSe FRESistance NPLCycles lt n gt MIN MAX ceesceeeseecesceeeeeeseseeseeeseaeeneaeeteaeeseeeees 5 44 SENSe FRESistance RANGe lt n gt MIN MAX eceeesseceseesecececceeseeeseaeeeseeeteaeeeneeeteasenseeetes 5 44 SENSe FRESistance RANGe AUTO lt b gt oo ceeceeeeeeeeseeeeseeeeseeeeseeeeaeeeeaceseaeeeeaeeseaeeseaeeseaeeens 5 45 2110 901 01 Rev A July 2012 iii Table of Contents Model 2110 5 Digit Multimeter Reference Manual SENSe FRESistance RESolution lt n gt MIN MAX occ eee eee eee eeee cess testes eeaeteaeeeaeteaetaaes 5 45 SENSe FREQuency APERture lt n gt MIN MAX c cccsccccssecsssessseecsseessseeesseesseessaeesseeesseees 5 46 SENSe FREQuency CURRent RANGe lt n gt MIN MAX ceeceeeceeeeeeteneeeeeeeteeeeeaeeteeeeeaeete 5 46 SENSe FREQuency VOLTage RANGe lt n gt MIN MAX eeceecceeeeeeeneeeeeeeteneeeeeeeteeeeeaeete 5 47 SENSe FREQuency VOLTage RANGe AUTO lt b gt 0 ccccccesesseceeeeeeeeseeeeeeeeeeeeeeseneeeseeneeess 5 47 SENSe FUNCTION MZ SIUN Een O EA 5 48 SENSe PERIod APE Rt re lt ri gt MIN MAX nininini dinier neien 5 49 SENSe PERiod VOLTage RANGe lt n gt MIN MAX ceeeceeeeeeceeeeeeeeeeneeseneeeteeeeneeeseeeeetens 5 49 SENSe PE
116. d press ENTER The MATH indicator turns on You can disable the math operation by pressing a different function key You can also disable it from the math menu as follows 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display OFF and press ENTER 3 54 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Remote operation NOJS Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to configure and control the dBm math function CALCulate FUNCtion DBM Select the dBm math function CALCulate DBM REFerence lt n gt Set reference resistance value lt n gt 50 to 8000 Set reference in ohms CALCulate STATe lt b gt Enable or disable math operations lt b gt 0 or OFF Disable math 1 or ON Enable math dB The instrument expresses dB in terms of the dBm function as follows dB input signal in dBm relative value in dBm The dB relative value can be set from 200 to 200 dBm and can be set from the front panel or by using remote programming The dB relative value is stored in volatile memory and defaults to 0 dBm when power to the instrument is cycled This feature is available for DCV and ACV only NOTE Since dB is calculated in terms of the dBm function the dBm REF RES value has an effect on the d
117. d in the Output Buffer As various programming errors and status messages occur they are placed in the Error Queue When a queue contains data it sets the appropriate summary bit of the Status Byte Register Questionable Data Event Enable Register Register Voltage Overload 0 0 y Current Overload __1 1 y Notused 2 2 gt Notused 3 3 gt Notused 4 4 gt Notused 5 5 Not used _ 6 6 Not used _7 7 _ gt Logical Not used _8 8 gt Ohms Overload 3 _ Not used 10_ gt Limit Test Fail LO Limit Test Fail HI gt Not used gt Not used gt Not used 15 15 gt STATus QUES EVENt STATus QUES ENABle lt n gt STATus QUES ENABle Output Buffer Standard Event Event Enable Register Register Operation Complete Not used Query Error Device Specific Error Execution Error Command Error Not used Power On B 2 Figure 37 Status model Error Queue Status Byte Summary Enable Register Register Not used Not used Not used Not used EAV EAV gt QSB Logical OR RQS Not used Not used SRE SRE Serial Poll SPOLL STB EAV Error Available QSB Questionable Summary Bit MAV Message Available ESB Event
118. dards The GPIB is the IEEE 488 instrumentation data bus which uses hardware and programming standards originally adopted by the Institute of Electrical and Electronic Engineers IEEE in 1975 The instrument is IEEE Std 488 1 compliant and supports IEEE Std 488 2 common commands and status model topology Install the GPIB cards in your computer Refer to the manufacturer s documentation for information about installing the GPIB cards Install the GPIB driver software Check the documentation for your GPIB controller for information about where to acquire drivers Keithley Instruments also recommends that you check the vendor s website for the latest version of drivers or software It is important that you install the drivers before you connect the hardware to prevent associating the incorrect driver to the hardware Communicate with instruments The GPIB driver software you installed installs an interactive dumb terminal program that allows you to send commands to the instrument The program directly calls the GPIB driver support libraries For the KPCI 488LPA and KUSB 488B GPIB controller from Keithley Instruments the configuration utility is called the KI 488 Diagnostic Tool It is available from the Windows Start menu at Keithley Instruments gt KI 488 gt KI 488 Diagnostic Tool After installing the Keithley I O layer C 8 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communi
119. del 2110 for thermocouple measurements 1 Press the SHIFT key and then press TEMP TCOUPL 2 Select the sensor type B C E J K N R S or T a Press CONFIG and with TYPE displayed press ENTER b Use the lt and gt keys to display a thermocouple type and press ENTER 3 Select the temperature measurement units C F or K a Press CONFIG use the lt and gt keys to display UNITS and press ENTER b Use the lt or gt key to display the units and press ENTER 4 Select a reference junction real or simulated a Press CONFIG use the lt and gt keys to display RJUNCTION and press ENTER b Use the lt or gt key to display REAL or SIMULATED and press ENTER c If you select SIMULATED use the lt gt A and Y keys to enter the reference temperature and then press ENTER Perform the following steps to measure temperature 1 Connect the thermocouple to the Model 2110 as shown below 2 Press SHIFT and TEMP TCOUPL 3 Observe the temperature reading on the display Perform the following steps to measure the real temperature 1 Press the SHIFT key and then press TEMP TCOUPL a Press CONFIG and with TYPE displayed press ENTER 2 Press CONFIG use the lt and gt keys to display VIEW REAL and then press ENTER 3 Observe the temperature reading C on the display Connections to measure temperature using a thermocouple Figure 23 Connections for thermocouple temperature measurements TC INPUT SEN
120. e Manual Remote triggering The trigger model for remote operation is shown below NOTE Remote triggering has an infinite trigger count and a maximum sample count of 50 000 When you use remote commands to set the trigger count and sample count and either one of these counts exceeds 9999 the front panel display shows the overflow message OVLD This is because the front panel can only display four digit numbers Figure 26 Remote trigger model idle INIT TRIG COUN lt n gt lt n gt 1 to 50 000 MIN MAX INF lt n gt 2000 for front panel operation Wait for event TRIG SOUR lt name gt lt name gt IMM BUS or EXT SAMP COUN lt n gt lt n gt 1 to 50 000 MIN or MAX lt n gt 2000 for front panel operation Delay TRIG DEL lt n gt lt n gt 1 to 3600 s MIN or MAX Sampling Measurements begin when the instrument leaves the Idle state and then receives a trigger while in the waiting for event state The reading rate depends on the trigger delay setting integration time setting and other instrument settings See Setting trigger delay using remote operation on page 3 36 to set the trigger delay Sample and trigger counters determine the number of measurements that are performed e The sample count is the number of measurements to perform for each trigger event e The trigger count is the number of trigger events the instrument accepts before entering the Idle state The number of measured
121. e RANGe MIN Query the minimum range SENSe FRESistance RANGe MAX Query the maximum range 5 44 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe FRESistance RANGe AUTO lt b gt This command turns autorange on or off for 04 Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description SENSe FRESistance RANGe AUTO Query 04 autorange state SENSe FRESistance RESolution lt n gt MIN MAX Use this command to set a measured resolution for 4 wire 04 measurements NOTE When you set the integration time the instrument automatically updates the reading resolution Parameters lt n gt description 3 00e 07 to 3 00e 04 Q4 range Select the resolution of the measurement MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe FRESistance RESolution Query the resolution setting SENSe FRESistance RESolution MIN Query the minimum resolution setting SENSe FRESistance RESolution MAX Query the maximum resolution setting Details Refer to Integration time and resolution for DC and resistance measurements on page 3 41 more information about resolution 2110 901 01 Rev A July 2012 5 45 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe FREQuency APERture lt n gt MIN
122. e clear before sending the second query command 2110 901 01 Rev A July 2012 5 3 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual SCPI command terminators A command string sent to the instrument must terminate with a lt new line gt character The IEEE 488 2 EOI end or identify message is interpreted as a lt new line gt character and can be used to terminate a command string in place of a lt new line gt character A lt carriage return gt followed by a lt new line gt is also accepted Command string termination will always reset the current SCPI command path to the root level Common commands Common commands summarized in Common command summary on page 5 5 are device commands that are common to all devices on the bus These commands are designated and defined by the IEEE 488 2 standard Most of these commands are described in detail in this section 5 4 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands Common command summary The following table lists the IEEE 488 2 common commands used by the instrument Mnemonic Name Description CLS Clear status Clear the Status Byte Summary Register and all event registers ESE lt NRf gt ESE ESR Event enable command Event enable query Event status register query Enable bits in the Standard Event Enable Register The selected bits are
123. e controller to set up the instrument for remote operation Generally the instrument should be placed in the remote mode before you attempt to program it over the bus Setting REN true does not place the instrument in the remote state You must address the instrument to listen after setting REN true before it goes into remote operation IFC The interface clear IFC command is sent by the controller to place the Model 2110 in the talker idle state and the listener idle state The instrument responds to the IFC command by canceling front panel TALK or LSTN lights if the instrument was previously placed in one of these states Transfer of command messages to the instrument and transfer of response messages from the instrument are not interrupted by IFC If transfer of a response message from the instrument was suspended by IFC transfer of the message will resume when the instrument is addressed to talk If transfer of a command message to the instrument was suspended by IFC the rest of the message can be sent when the instrument is addressed to listen LLO When the instrument is in remote operation all front panel controls are disabled except the LOCAL and OUTPUT OFF keys and the POWER switch The local lockout LLO command disables the LOCAL control but does not affect the OUTPUT OFF control which cannot be disabled GTL Use the go to local GTL command to put a remote mode instrument into local mode Leaving the remote state also
124. e to any number from 0 to 120 of the highest range for the present function Query the lower limit for the limit testing Specify the upper limit for limit testing You can set the value to any number from 0 to 120 of the highest range for the present function Query the upper limit for the limit testing Path to configure MXB Specify m factor for mx b 100e 6 to 100e 6 or MINimum MAXimum Query the value of m Specify b factor for mx b 100e 6 to 100e 6 or MINimum MAXimum Query the value of b Path to configure dB Relative Register Store a relative value in the dB Relative Register any number between 0 dBm and 200 dBm or MINimum MAXimum Query the dB relative value Path to configure the dBm reference value Specify the dBm reference value Choose from 50 8000 Q or MINimum MAXimum Query the dBm reference value Specifies whether readings taken using the INITiate command are stored in the multimeter s internal memory default or not stored at all Query the reading memory state Return CALC or 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands DISPlay subsystem summary Command Description DISPlay lt b gt Turn on or off front panel display Where 0 off and 1 on DISPlay TEXT lt a gt Define ASCII message a up to 16 characters in length The message will display on the secondary displa
125. each sample that follows Spe n gt MIN MAX trigger delay time in seconds The delay is the time between the trigger signal and cify a delay time from 0 to 3600 seconds Parameters lt n gt description 0 to 3600 Specify a delay time from 0 to 3600 seconds Query command description TRIGger DELay Query the trigger delay time TRIGger DELay MAX Query the minimum trigger delay time TRIGger DELay MIN Query the maximum trigger delay time Details Refer to Trigger delay on page 3 35 for information about sources TRIGger DELay AUTO lt b gt Turn automatic trigger delay o n or off The delay is determined by function range integration time and AC filter setting Specifying a delay time automatically turns off the automatic trigger delay Parameters lt b gt description 0 or OFF Turn selected automatic trigger delay off 1 or ON Turn automatic trigger delay on Query command description TRIGger DELay AUTO Query the automatic trigger delay mode Returns 0 OFF or 1 ON 2110 901 01 Rev A July 2012 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual TRIGger SOURce lt name gt Use this command to select a trigger source The instrument accepts a software BUS trigger an immediate internal trigger or a hardware trigger from the rear panel EXT TRIG terminal Parameters lt name gt description BUS Select software trigger IMMediate Select immed
126. easurement performance on page 3 38 for details about setting measurement speed and resolution It also provides information on using other features and settings to optimize measurement performance A CAUTION Remove voltage from the front panel input terminals before switching the equipment off Failure to do so could result in the equipment being damaged Front panel operation Perform the following steps to measure voltage 1 Press the DCV key to measure DC voltage or the ACV key to measure AC voltage 2 Select a measurement range auto or manual e Autorange is the power on default If manual ranging is selected MAN indicator on press SHIFT and then ESC AUTO to select autorange e For manual ranging press the RANGE A and Y keys to select a measurement range 3 As shown below connect the signal to the instrument and observe the reading on the display If the input signal exceeds the selected range the overflow message OVLD displays Connections for DC and AC voltage measurements Figure 16 Connections for DCV and ACV measurements Measure ACV CATI 1000V_ CATI 1000V CAT GooV L GATI 600v L RANGE Input resistance Input impedance 10 MQ on 1000 V 100 V ranges 1M2 in parallel with lt 100 pF gt 10 GQ on 10 V 1 V 100 mv ranges 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Remote operation NOTE Commands that
127. ed to trigger a specified number of measurements Parameters NORE All lt range gt and lt resolution gt parameters also include MIN MAX and DEF N A indicates that the lt range gt and or lt resolution gt parameters are not applicable for the lt function gt lt function gt lt range gt lt resolution gt see note 1 Description see note 2 CURRent DC 10 to 10 3 00e 07 to 3 00e 04 Amperes CURRent AC 0 to 10 1 00e 06 to 1 00e 04 Amperes VOLTage DC 1000 to 1000 3 00e 07 to 3 00e 04 Voltage VOLTage AC 0 to 750 1 00e 06 to 1 00e 04 Voltage CAPacitance 0 to 10e 3 N A Farads VOLTage DC RATio 1000 to 1000 3 00e 07 to 3 00e 04 Voltage RESistance 0 to 100e6 3 00e 07 to 3 00e 04 Ohms FRESistance 0 to 100e6 3 00e 07 to 3 00e 04 Ohms FREQuency VOLTage 0 to 750 N A Voltage FREQuency CURRent 0 to 10 N A Amperes PERiod VOLTage 0 to 750 N A Voltage PERiod CURRent 0 to 10 N A Amperes CONTinuity N A N A N A DIODe N A N A N A TCOuple N A N A N A EMPerature N A N A N A NOJS 1 Do not use the number of digits to specify a resolution instead use the same units as the measurement function For example specify the resolution in volts and the frequency in hertz The resolutions provided are of range Refer to Bandwidth and resolution for AC measurements on page 3 43 for more information about AC measurements Refer to Integration time and resolution for DC and resistance measurements on page 3 41
128. efer to Enhancing measurement performance on page 3 38 for details about setting measurement speed and resolution It also provides information on using other features and settings to optimize measurement performance Front panel operation Perform the following steps to measure frequency or period 1 Select the frequency or period measurement function e Frequency Press the FREQ key e Period Press FREQ and CONFIG and with PERIOD displayed press ENTER Select the AC signal voltage or current to measure a Press CONFIG use the gt key to display INPUT JACK and then press ENTER b Use the lt or gt key to display VOLTAGE or CURRENT and then press ENTER Select a measurement range auto or manual for the AC signal to be measured e Autorange is the power on default If manual ranging is selected MAN indicator on press the SHIFT key and then ESC AUTO to select autorange e For manual ranging press the RANGE A and Y keys to select a measurement range As shown below connect the AC signal to the Model 2110 and observe the reading on the display If the input signal exceeds the selected range the overflow message OVLD displays N w gt A 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Connections for frequency and period measurements Figure 20 Connections for FREQ and PERIOD TC INPUT SENSE a4w INPUT TC INPUT SE
129. en press the CONFIG key 2 Usethe gt and lt keys to select INTERFACE 3 Press ENTER 4 Usethe gt and lt keys to e Select GPIB to turn on the output e Select USB to turn off the output 5 Press ENTER Additional USB information This section provides further details and more advanced information about the USB bus and test and measurement instruments 2110 901 01 Rev A July 2012 C 7 Appendix C Communication interface Model 2110 5 Digit Multimeter Reference Manual Connecting multiple USB instruments to the computer The most convenient way to connect USB instrumentation to the computer is to plug a USB cable directly from the instrument to the computer If you have more than one USB instrument or have other USB devices such as printers keyboards and mice you might not have enough USB connectors on the computer To gain more ports you can use a USB hub or add more USB controller cards if you have available PCI or PCI Express slots There are two types of USB hubs that you can use with Model 2110 e Bus powered This type of hub draws its power from the USB bus and can only supply 100 mA USB 2 0 per port e Self powered This type of hub has an external power supply and can supply up to 500 mA per port USB 2 0 GPIB setup This section contains information about GPIB standards connections and address selection NOTE The GPIB connector is optional and may not be present on your instrument GPIB stan
130. er Reference Manual Section 3 Basic DMM operation Auto triggering When the instrument is turned on it goes into the auto triggering to perform continuous measurements The reading rate depends on the trigger delay setting integration time setting and other instrument settings See Setting sample count from the front panel on page 3 34 to set the delay Press the SHIFT and TRIGGER AUTO keys to enable or restore auto triggering Single triggering When you use single triggering the instrument takes one reading or a specified number of readings each time you press the TRIGGER key The reading rate depends on the trigger delay setting integration rate setting and other instrument settings See Setting trigger delay from the front panel on page 3 36 to set the delay A sample counter determines the number of measurements to perform when the TRIGGER key is pressed After the specified number of measurements are performed the instrument waits for the TRIGGER key to be pressed again See Setting sample count from the front panel on page 3 34 to set the sample count When the TRIG indicator is displayed the instrument is ready for the next trigger event NOTE Single triggering is not available for the diode and continuity functions To use single triggering press the TRIGGER key to trigger one or more measurements 2110 901 01 Rev A July 2012 3 29 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Referenc
131. erates too much data to fit in the output buffer at the same time that the input buffer was full Command execution continues but all data is lost 440 Query UNTERMINATED EE The IDN command must be the last query command within a after indefinite response command string 521 Input buffer overflow EE Input buffer overflow 522 Output buffer overflow EE Output buffer overflow 531 Insufficient memory EE There is not enough memory to store the requested number of readings in internal memory using the INITiate command The product of the sample count SAMPle COUNt and the trigger count TRIGger COUNt must not exceed 2000 readings 532 Cannot achieve requested EE The instrument cannot achieve the requested measurement resolution resolution You may have specified an invalid resolution in the CONFigure or MEASure command 540 Cannot use overload as EE The instrument cannot store an overload reading 9 90000000E 37 as math reference the math reference for null or dB measurements The math state is turned off as a result of this condition 550 Command not allowed in EE The instrument received a READ command while in the local mode local 601 Front panel does not ST The main CPU U1601 attempts to establish serial communications with respond the front panel processor U3 Communication must function in both directions for this test to pass 602 RAM read write failed ST This test writes and reads a 55h and AAh checkerboard pattern to e
132. erstraccs istic e E O 2 20 T ming o measurement CIS AV osname a a a 2 20 TUMING the beeper oi OF ONarpecrne n e E E O N 2 21 Selecting the initial operating mode eeeceeeeeeseeeseeeeeneeeeeeeeeseeeteaeeesaeesaeeeaeeseaeeesaeeseaeeeaees 2 22 Selecingithelanguage meee meer cnr entree E E sre tere erie neater ry reer eee fer p ee tet terre tr 2 23 VIEWING errors in the error GUBUG cis deacessccensnis seqntcoegenaedeedeaneeesencbnte shidbddagnscnddeshaebiansacdenbesedae 2 23 Viewing System Vor SlOMa Assisii a ecu o a ance Ae A RER 2 24 VIEWING CallbratiOn IMMOFMALION assisen nnr nE EREE E 2 24 Basic DMM perati N cscscceccisccenicccecsntcccccendcanstinicccedenleinaderaeadeincdeeidanteenieierdendeaneeanicaed 3 1 Basic measurement TUMCHONS iicciies ciccotesccxcibas conctbsscexusnai ceaditeascelavas staves sereuerndieendstacesiinan aaa 3 1 Table of Contents Model 2110 5 Digit Multimeter Reference Manual Voltage measurements iskio a a eaaa a aaao ae E 3 1 Raie measure meni Sueras n r O pate caeiatee tisetecenaeey 3 4 Guren measuremMmeMS srera EEA ERTE AE TE 3 6 Resistance IMGASUNEIMOMGxcxssscecencinepeceadiecteceieaseaedsaaeahedsasdetes a a fork sd sehadsds ceded gedesdlaceventics 3 9 Frequency and period MEASUIEMENISs jiscdcciieivesnncdessedeceeyesnecerdssdsauivasseedeasrdepaseraccandasddesineenecen 3 12 CONTINUITY MEASUFEMENES eror aio aoe E ORO E 3 15 Diode WIEASUFEMONIS rrsan a eee 3 15 Temperature IMEASUEGING Ml istie nkore st ahoni r
133. ery range Specify the aperture time for the selected function 0 01 0 1 1 MIN or MAX Query the aperture time for frequency function Path to configure period Path to period voltage Specify range 0 to 750 MIN or MAX Query the period range setting Enable or disable auto range Where 0 OFF and 1 ON Query auto range setting Path to configure current Specify range Query the range Specify the aperture time for the selected function 0 01 0 1 1 MIN or MAX Default 100 ms Query the aperture time for period function Specify units for temperature measurement Cel means Celsius Far means Fahrenheit and K means Kelvin Query units for temperature measurement Path to configure thermocouple Specify thermocouple sensor type E J K N R S or T Query thermocouple sensor type Path to thermocouple reference junction Specify reference junction type real or simulated REAL or S Mulated Query the reference junction type Specify the default temperature of the simulated reference junction Query the default temperature of the simulated reference junction Path to offset voltage of the real reference junction Specify the offset voltage of the real reference junction value MIN or MAX Query the offset voltage of the real reference junction Path to temperature measurements 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote com
134. et the instrument previously by using PSC 0 2 To query the Standard Event and Questionable Data Registers will clear only the separate bits in the summary register Programming enable registers The only registers that can be programmed by the user are the enable registers All other registers in the status structure are read only registers The following explains how to determine the parameter values for the various commands used to program enable registers The actual commands are covered later in this section A command to program an event enable register is sent with a parameter value that determines the desired state 0 or 1 of each bit in the appropriate register An enable register can be programmed using the decimal format The bit positions of the register indicate the binary parameter value and decimal equivalent 2110 901 01 Rev A July 2012 B 3 Appendix B Status model Model 2110 51 Digit Multimeter Reference Manual Reading registers Any register in the status structure can be read by using the appropriate query command The response message is a decimal value corresponding to a binary weighed sum of all bits set in the register Status byte and service request SRQ Service request is controlled by two 8 bit registers The Status Byte Register and the Status Byte Enable Register Status Byte Register The summary messages from the status registers and queues are used to set or clear the appropria
135. eter is only valid only when used with FUNC1 CAPacitance Select capacitance measurements RESistance Select 2 wire ohms function FRESistance Select 4 wire ohms function FREQuency VOLTage Select voltage frequency measurement FREQuency CURRent Select current frequency measurement PERiod VOLTage Select voltage period measurement PERiod CURRent Select current period measurement CONTinuity Select continuity measurement DIODe Select diode measurement TCOuple Select thermocouple temperature measurement TEMPerature Select temperature measurement NONE Select to turn off secondary display This parameter is only valid only when used with FUNC2 command description FUNCtion Query the measurement function and return a quoted string Refer to Secondary measurement function on page 3 26 for information about the instrument s dual measurement capability Specify a measurement function and enclose it in quotes in the command string Optionally include one of the following parameter to indicate primary or secondary display 1 for primary display For example FUNCTion1 2 for secondary display If you do not specify a display the display parameter defaults to a 1 for the primary display Include NONE to turn off secondary display This is only valid only when used with FUNCtion2 Example FUNCtion VOLTage AC Specifies Voltage AC as the measurement function and primary display as the disp
136. evices that implement the USBTMC or USBTMC USB488 protocol Appendix C Communication interface Model 2110 5 Digit Multimeter Reference Manual NOTE The full version of National Instruments NI VISA provides a utility to create a USB driver for any other kind of USB device that you want to communicate with VISA For more information see the NI VISA website http www ni com Communicate with the instrument To communicate with the USB device you need to use NI VISA VISA requires a resource string in the following format to connect to the correct USB instrument USBJboard manufacturer ID model code serial number USB interface number INSTR This requires that you determine the parameters You can gather this information by running a utility that automatically detects all instruments connected to the computer If you installed the Keithley I O Layer the Keithley Configuration Panel is available from the Microsoft Windows Start menu in the Keithley Instruments menu To use the Keithley Configuration Panel to determine the VISA resource string 1 Start the Keithley Configuration Panel The Select Operation dialog box is displayed 2 Select Add Figure 38 Select Operation dialog box Keithcy Contau ne Welcome to the Keithley Configuration Wizard This wizard will help manage your virtual instruments Select the Operation you want to perform Press Next to continue Press Cancel to exit this
137. f all bits set in the register Refer to Standard Event Register on page B 9 for information about values 5 6 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands IDN identification query This query command reads the instrument s identification code Usage IDN Details The identification code includes the manufacturer model number serial number and firmware revision level and is sent in a format consisting of four fields delimited by commas as follows manufacturer model serial number firmware revision level Format X xXxX yy ZZ Where x xx indicates the firmware revision number for the measurement processor yy indicates the I O processor zz indicates the front panel processor For example KEITHLEY INSTRUMENTS INC MODEL 2110 1311126 01 00 01 01 OPC operation complete command Set the Operation Complete bit bit 0 in the Standard Event Register after all pending commands have been executed OPC operation complete query This query command places a 1 in the output queue Usage OPC Details When OPC is sent the OPC bit in the Standard Event Register will set after all pending command operations are complete When OPC is sent an ASCII 1 is placed in the Output Queue after all pending command operations are complete Typically either one of these commands is sent after the INITiate
138. figure the instrument for measurement and acquire measurement readings You can use these high level instructions to control the measurement process These commands are summarized in the following table 5 14 Signal oriented measurement command summary Command Description CONFigure lt function gt lt range gt lt resolution gt CONFigure FETCh INITiate READ MEASure lt function gt lt range gt lt resolution gt Configures instrument for measurements on the specified function Returns active function Requests latest readings Changes the state of the triggering system to wait for trigger Performs an INITiate and a FETCh Performs a CONFigure lt function gt and a READ 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands CONFigure lt function gt lt range gt MIN MAX DEF lt resolution gt MIN MAX DEF This command configures the instrument to a specific setup for a specified measurement function This command does not initiate the measurement The READ command is then typically used to trigger a specified number of measurements Parameters NOTE All lt range gt and lt resolution gt parameters also include MIN MAX and DEF N A indicates that the lt range gt and or lt resolution gt parameters are not applicable for the lt function gt lt function gt lt range g
139. for the IVI C driver LabVIEW supports IVI COM drivers but they are definitely not the first or second choice However if it is the only driver type for the instrument it can be used If LabWindows CVI or C C is your programming language an IVI C driver is the best option For Microsoft Visual Basic 6 0 and any NET language C VB NET and so on an IVI COM driver is the best option Sometimes instrument vendors do not provide all three driver types Most languages can accommodate other driver types but this is not optimal The following sections describe the different driver types in more detail C 12 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface VXIPnP drivers VXI Vixie plug and play VXIPnP style drivers are Win32 DLLs that have some standard functions defined by the VXIPnP Alliance such as e init e close e error_message e reset e self test e Read e Initiate e Fetch e Abort The application programming interface API was defined so that users of instruments would have a familiar API from instrument to instrument There are some basic guidelines when creating APIs for your instrument such as using VISA data types and how to construct the CVI hierarchy There are many VXIPnP drivers available for Agilent Fluke and Tektronix instruments LabVIEW drivers Native LabVIEW drivers A native LabVIEW driver is a LabVIEW driver th
140. g steps to set display resolution 1 Select the ACV or ACI measurement function 2 Use the DIGITS key to set display resolution Each key press toggles the display between 41 2 and 5 digits Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following command to set AC bandwidth DETector BANDwidth lt n gt lt n gt 3 3 Hz setting 20 20 Hz setting 200 200 Hz setting Use the following commands to set resolution VOLTtage AC RESolution lt n gt Set resolution for ACV CURRent AC RESolution lt n gt Set resolution for ACI lt n gt See Note Measurement resolution 2110 901 01 Rev A July 2012 3 43 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual NOTE The resolution setting range for lt resolution gt depends on the selected function and range The maximum value for AC measurement is 1 00e 04 x full scale range and the minimum value is 1 00e 06 x full scale range For example for ACV 750 V range the minimum value is 1 00e 06 x 750 V 1 00e 03 The maximum value is 1 00e 04 x 750 V 1 00e 01 Therefore lt resolution gt 1 00e 03 to 1 00e 01 for the ACI 10A range For example for ACI 10 A range the minimum value is 1 00e 06 x 10 A 1 00e 05 The maximum value is 1 00e 04 x 10 A 1 00e 03 Therefore lt resolutio
141. ge RANGe MAX Query the maximum range 2110 901 01 Rev A July 2012 5 49 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe PERiod VOLTage RANGe AUTO lt b gt This command turns autorange on or off for the period voltage function Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description SENSe PERiod VOLTage RANGe AUTO Query autorange state SENSe RESistance RANGe lt n gt MIN MAX Use this command to select the function Q2 and set a measure range Parameters lt n gt description 0 to 100e6 Select the measurement range value in ohms MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe RESistance RANGe Query the measurement range SENSe RESistance RANGe MIN Query the minimum range SENSe RESistance RANGe MAX Query the maximum range SENSe RESistance RANGe AUTO lt b gt This command turns autorange on or off for resistance Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description SENSe RESistance RANGe AUTO Query autorange state 5 50 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe RESistance RESolution lt n gt MIN MAX Use this command
142. get value 1 u resolution NOTE The target value setting range depends on the selected function For example for DCV the target value can be set from 1200 to 1200 CALCulate STATe lt b gt Enable or disable math operations lt b gt 0 or OFF Disable math 1 or ON Enable math Average When the average math function is enabled the instrument performs measurements and displays the average reading in the secondary display It can also display the minimum and maximum readings as well as the reading count The data acquired by the average math function is stored in volatile memory It is lost when power to the instrument is cycled or when the remote interface is reset The average math function can be used from the front panel or by using remote operation Front panel operation Perform the following steps to use the average math function 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display AVERAGE and press ENTER 3 With RUN displayed press ENTER The MATH indicator turns on The primary top display shows the measured readings and the secondary bottom display shows the average AVG reading of the measurements that have already been performed Use the lt and gt keys to change the secondary display to show the maximum MAX minimum MIN readings and the reading count COUNT You can disable the math operation by pressing a different function key You can also disable it from the math
143. gger deadlock occurs when the trigger source is BUS and a READ command is received 221 Settings conflict EE This error can be generated in one of the following situations e Situation 1 You sent a CONFigure or MEASure command with autorange enabled and with a fixed resolution Situation 2 You turned math on and then changed to a math operation that was not valid with the present measurement function e Situation 3 When the autorange is enabled at the DCI s and ACI s 10A ranges the error message will be generated 222 Data out of range EE A numeric parameter value is out of range 223 Too much data EE A character string was too long 223 2nd function mismatch EE The 1st and 2nd functions mismatch 224 Illegal parameter value EE A discrete parameter was received that was not a valid choice for the command 225 Function range mismatch The measurement function and the range specified for the function are mismatched 230 Data Stale EE A FETCh command was received but the memory was empty 350 Too many errors EE The error queue is full 410 Query INTERRUPTED EE A command was received that sends data to the output buffer but the output buffer contained data from a previous command 420 Query UNTERMINATED EE The instrument was addressed to talk for example to send data over the interface but a command has not been received that will send data to the output buffer 430 Query DEADLOCKED EE A command was received that gen
144. gital filter on or off Parameters lt b gt description 0 or OFF Turn the digital filter off 1 or ON Turn the digital filter on Query command description SENSe AVERage STATe Query the state of the digital filter Returns 0 off or 1 on Details Refer to Digital filter on page 3 45 for more information about using this command 2110 901 01 Rev A July 2012 5 37 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe AVERage TCONtrol lt name gt Use this command to select the digital filter type Parameters lt name gt description MOVing Select the moving average filter REPeat Select the moving average filter Query command description SENSe AVERage TCONtrol Query the type of digital filter Returns O off or 1 on Details Refer to Digital filter on page 3 45 for more information about using this command SENSe CAPacitance RANGe lt n gt MIN MAX Use this command to select the capacitance range Parameters lt n gt description 0 to 10e 3 Specify the value of the expected capacitance reading MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe CAPacitance RANGe Query the capacitance range SENSe CAPacitance RANGe MIN Query the minimum capacitance range SENSe CAPacitance RANGe MAX Query the maximum capacitance range Details The measurement range
145. gt MIN MAX Use this command to select the function DCV and set a measurement range Parameters lt n gt description 1000 to 1000 Select the measurement range in volts MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe VOLTage DC RANGe Query the measurement range SENSe VOLTage DC RANGe MIN Query the minimum range SENSe VOLTage DC RANGe MAX Query the maximum range 2110 901 01 Rev A July 2012 5 63 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe VOLTage DC RANGe AUTO lt b gt This command turns autorange on or off for DC voltage measurements Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description SENSe VOLTage DC RANGe AUTO Query DC voltage autorange state SENSe VOLTage DC NPLCycles lt n gt MIN MAX Use this command to select the integration time for voltage measurements Integration time for DCV measurements is expressed as the number of power line cycles NPLC Parameters Query Details lt n gt 0 001 0 006 0 02 0 06 0 2 0 6 1 2 10 100 MINimum MAXimum command ENSe VOL ENSe VOL ENSe VOL description Select 0 001 NPLC Select 0 006 NPLC Select 0 02 NPLC Select 0 06 NPLC Select 0 2 NPLC Select 0 6 NPLC Select 1 NPLC Select 2 NPLC Select 10 NPLC
146. h 2110 901 01 Rev A July 2012 5 43 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe FRESistance NPLCycles lt n gt MIN MAX Use this command to select the integration time for 4 wire measurements Integration time for 4 wire measurements is expressed as the number of power line cycles NPLC Parameters Query Details lt n gt 0 001 0 006 0 02 0 06 0 2 0 6 1 2 10 100 MINimum MAXimum command ENSe FRI ENSe FRI ENSe FRI description Select 0 001 NPLC Select 0 006 NPLC Select 0 02 NPLC Select 0 06 NPLC Select 0 2 NPLC Select 0 6 NPLC Select 1 NPLC Select 2 NPLC Select 10 NPLC Select 100 NPLC Select the minimum value Select the maximum value ESistance NPLCycles ESistance NPLCycles MIN ESistance NPLCycles MAX description Query the NPLCycles Query the minimum value Query the maximum value Refer to Integration time and resolution for DC and resistance measurements on page 3 41 more information about NPLC SENSe FRESistance RANGe lt n gt MIN MAX Use this command to set a measure range for 4 wire 04 measurements Parameters lt n gt description 0 to 100e6 Select the measurement range in ohms MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe FRESistance RANGe Query the measurement range SENSe FRESistanc
147. he AC power 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 2 General overview To set the line voltage 1 Verify that the instrument is disconnected from AC power as shown in the following figure Figure 3 Disconnect AC power 2 Press the latch to unlatch the voltage setting selector container as shown in the following figure a flat blade screwdriver may be required Figure 4 Unlatching voltage selector 2110 901 01 Rev A July 2012 2 3 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual 3 Remove the voltage setting selector container as shown in the following figure a flat blade screwdriver may be required Figure 5 Remove voltage selector 4 Open the clips on the sides and remove the voltage setting selector from the container as shown in the following figure Figure 6 Open clips 2 4 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 2 General overview 5 Turn the voltage setting to the correct setting NOTE The instrument has four possible voltage settings 100 V 120 V 220 V and 240 V It can be set to any of these working voltages Figure 7 Turn voltage selector 6 Insert the voltage setting selector back into the socket and close the cap Fuse replacement A rear panel fuse drawer is located below the AC receptacle refer to Rear panel overview on page 2 17
148. he INITiate command is received Readings are stored in memory until you are ready to read them Use FETCh command to retrieve your measurements results READ 1 2 The READ command changes the state of the trigger system from the idle state to the wait for trigger state When the specified trigger condition requirements are met after the instrument receives the READ command the measurement will be initiated The results are sent to the output buffer right away You must enter the reading data into your bus controller or the instrument will stop making measurements when the output buffer fills Readings are not stored in the instrument s internal memory when using the READ command Using the READ command has a similar effect as using the INITiate command followed immediately by the FETCh command except readings are not buffered internally Parameters 1 1 stands for the specified function which will act on the primary display 2 2 stands for the specified function which will act on the secondary display Example READ2 Also see INITiate FETCh 1 2 on page 5 16 2110 901 01 Rev A July 2012 5 17 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual MEASure lt function gt lt range gt MIN MAX DEF lt resolution gt MIN MAX DEF This command configures the instrument to a specific setup for measurements on the specified function The READ command is then typically us
149. he enable register the logic 1 output is applied to the input of the OR gate and then sets the RQS bit in the Status Byte Register The individual bits of the Status Byte Enable Register can be set or cleared by using the SRE common command To read the Status Byte Enable Register use the SRE query command The Status Byte Enable Register clears when power is cycled or a parameter value of 0 is sent with the SRE command for example SRE 0 The commands to program and read the SRQ Enable Register are described in Status byte and service request commands on page B 7 NOTE If you have set the instrument previously by using PSC 0 the Status Byte Enable Register will not be cleared at power on 2110 901 01 Rev A July 2012 B 5 Appendix B Status model Model 2110 51 Digit Multimeter Reference Manual Status structure Using serial polling and SRQ Any enabled event summary bit that goes from 0 to 1 will set bit B6 and generate a SRQ service request In your test program you can periodically read the Status Byte to check if an SRQ has occurred and what caused it If an SRQ occurs the program can for example branch to an appropriate subroutine that will service the request Typically SRQs are managed by the serial poll sequence of the instrument If an SRQ does not occur bit B6 of the Status Byte Register remains cleared and the program proceeds normally after the serial poll is performed If an SRQ does occur b
150. he measured reading For example If a 5 V null level is set the measurement of a 5 V input signal will be displayed as 0 V The null feature is available for all functions except continuity and diode The null feature and other math functions may not be used at the same time The null feature can be used from the front panel or by using remote operation 2110 901 01 Rev A July 2012 3 49 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Front panel operation Perform the following steps to use a measured value as the null value 1 Select and configure a measurement function 2 Connect the null signal or device to the input of the instrument To null out test lead resistance connect the test leads to the input and short them together Press the NULL key The MATH indicator turns on and display reads zero or near zero Disconnect the null signal or device and connect the signal or device to be measured Each reading on the display is the result of the measured reading minus the null value Po Perform the following steps to enter a null value 1 Select and configure a measurement function For example press the DCV key to select the DC volts function 2 Press the SHIFT and NULL MATH keys 3 Use the lt and gt keys to display NULL and press ENTER 4 Use the lt and gt keys to display NULL VALUE and press ENTER Note that if you select the RUN menu option instead the null feature wil
151. his command is used to store a relative value in the dB Relative Register You must turn on the math operation before writing to the math register Parameters parameters description lt n gt Set the dB value to any value between 0 to 200 00 MINimum Set value to the minimum MAXimum Set value to the maximum Query command description CALCulate DB R CALCulate DB R EFerence EFerence MIN CALCulate DB R EFerence MAX Query the dB relative value Query the minimum value Query the maximum value CALCulate DBM REFerence lt n gt MIN MAX This command is used to set the dBm reference resistance value in ohms Parameters parameter description lt n gt You can set the relative value to any number between 50 8000 Q MINimum Set value to the minimum MAXimum Set value to the maximum Query command description CALCulate DBM REFerence CALCulate DBM REFerence MIN CALCulate DBM REFerence MAX 2110 901 01 Rev A July 2012 Query the dBm reference value Query the minimum value Query the maximum value 5 29 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual CALCulate FUNCtion lt name gt This command is used to configure the math function for the calculate commands You can only select one function at a time Parameters lt name gt Description PERCent Select percent math calculation The default function is percent AVERage Select average
152. iate internal trigger EXTernal Select hardware trigger from the rear panel EXT TRIG terminal Query command description TRIGger SOURce Query the trigger source Details Refer to Trigger sources information about sources 5 70 2110 901 01 Rev A July 2012 Section 6 Troubleshooting guide In this section TPOUBISSMOOUIAG rece e 6 1 Runnings Sellossa tearemedettsetantneinee 6 2 Error GOOCS 2 srini a ie 6 3 Troubleshooting This section provides information to help you troubleshoot problems with your instrument Refer to the following Websites for information about your instrument 1 Keithley Instruments website htto www keithley com 2 Keithley web forum http forum keithley com Refer to the Displaying the instrument s serial number on page 1 5 section for information about your instrument s serial number Refer to the remainder of this section for information about running a self test and error codes Section 6 Troubleshooting quide Model 2110 5 Digit Multimeter Reference Manual Running a self test Self test procedures are built into the Model 2110 for checking that the logic and measurement hardware are functioning properly Every time the instrument is powered on these test procedures are performed to make sure the basic functions of the instrument work properly If any error occurs during self test procedures it indicates that parts of the instrument are not operating properly and may need to
153. ication software to send and receive data and commands without dealing with some low level GPIB nuances This class is recommended for typical GPIB communication The INTFC class allows finer control over the GPIB controller card in the computer You must comply with the IEEE 488 1 protocol and tell the instrument to listen and the controller to talk before sending a message to the instrument This class allows you to communicate to the instrument using low level GPIB commands Refer to your VISA documentation for more details on how to use this class The GPIB INSTR resource class format is GPIB board primary address secondary address INSTR board is the number of the GPIB card if there are more than one in the computer If there is only one GPIB card don not include board but do not leave a space primary address is the main GPIB address of the instrument which can be changed if necessary through the front panel of the instrument secondary address is for secondary addressing in GPIB Some instruments have subinstruments or cards inside the main instrument or backplane The primary address identifies the main instrument The secondary address identifies subinstruments Refer to the instrument user manual for the secondary address if applicable Sending raw commands to an instrument The next sections show you how to use VISA C and VISA COM to send raw instrument commands without using the instrument drivers 2110 901 01
154. iew the number of times the instrument has been calibrated CAL DATE View the date of the last calibration Rear panel overview The rear panel of the Model 2110 is shown in the following figure This figure includes important abbreviated information that should be reviewed before using the instrument 2110 901 01 Rev A July 2012 2 17 Section 2 General overview 2 18 Figure 13 Rear panel 1 Voltmeter complete output terminal VM COMP The VM COMP output terminal outputs a low true pulse from a remote interface Refer to External triggering on page 3 32 for details 2 External triggering input terminal EXT TRIG Use the EXT TRIG input terminal when choosing external triggering Refer to External triggering on page 3 32 for details 3 USB connection Use the USB connector to connect the instrument to a remote computer You can use this connection to switch the instrument to remote mode instead of using the front panel control Refer to USB connector on page 2 19 for details 4 Protective earth safety ground Ground screw for connection to protective earth safety ground Connect to protective earth using recommended wire size 16 AWG or larger 5 AC line receptacle power line fuse and line voltage setting Provides e AC line receptacle Use to connect to AC power Refer to Turning your instrument on and off on page 2 1 for details e Line voltage setting Configured for line
155. igger 20 Hz 1 08s 200 Hz 600 ms ACV ACI 3 Hz 1 5s Front panel with auto trigger enabled 20 Hz 200 ms 200 Hz 100 ms Q2 and 94 100 Q to 100 kQ 1 5 ms PLC gt 1 1 MQ 15 ms 10 MQ to 100 MQ 100 ms Q2 and 94 100 Q to 100 kQ 1 0 ms PLC gt 1 1 MQ 10 ms 10 MQ to 100 MQ 100 ms Frequency Period Remote interface 1 0s external Front panel with auto Os trigger enabled Capacitance 1 nF to 10 mF Os 2110 901 01 Rev A July 2012 3 35 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Seiting trigger delay from the front panel When not using auto trigger delay you can manually set the delay time from 0 to 3600 seconds 100 us resolution Your trigger delay time is stored in volatile memory automatic trigger delay will be used when instrument power is turned off and then turned on again To set trigger delay auto or manual from the front panel 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the lt and gt keys to display TRIG SYS and press ENTER 3 Use the lt and gt keys to display DELAY and press ENTER 4 Use the lt or gt key to display AUTO or MANUAL and press ENTER If you select AUTO you will exit from the menu structure with auto delay enabled 5 For a manual delay use the lt gt A and Y keys to specify the trigger delay 0 to 3600 seconds and press the ENTER key Setting trigger delay using remote operation NOTE Commands that use the
156. imulated reference temperature for the Model 2110 can be set from 100 C to 100 C The Model 2110 measures the input voltage and factors in the simulated reference temperature to calculate the temperature reading at the thermocouple Model 2110 51 Digit Multimeter Reference Manual Section 4 Theory of operation Accuracy calculations The following information discusses how to calculate accuracy for both DC and AC characteristics Calculating DC and AC characteristics accuracy DC characteristics accuracy is calculated as follows Accuracy of reading of range As an example of how to calculate the actual reading limits assume that you are measuring 5V on the 10V range You can compute the reading limit range from one year DCV accuracy specifications as follows Accuracy 0 012 of reading 0 004 of range 0 012 5 V 0 004 10 V 0 0006 V 0 0004 V 0 0010 V Thus the actual reading range is 5 V 1 mV or from 4 999 V to 5 001 V DC current AC voltage AC current and resistance calculations are performed in exactly the same manner using the pertinent specifications ranges and input signal values 2110 901 01 Rev A July 2012 4 5 Section 5 Remote commands In this section Programming Syna erea E EE 5 1 COMMON commands rsak AA 5 4 Introduction to SCPI language csiis 5 10 SCPI signal oriented measurement commands 8 5 14 SCPI command subsystem reference ccsceeseeeseeeeneees
157. imum Select the minimum value MAXimum Select the maximum value Query command description SENSe CURRent AC RESolution Query the measurement resolution SENSe CURRent AC RESolution MIN Query the minimum resolution SENSe CURRent AC RESolution MAX Query the maximum resolution Details Refer to Bandwidth and resolution for AC measurements on page 3 43 for more information about resolution 5 40 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe CURRent DC NPLCycles lt n gt MIN MAX Use this command to select the integration time for DC current measurements Integration time for DCI measurements is expressed as the number of power line cycles NPLC Parameters lt n gt 0 001 0 006 0 02 0 06 0 2 0 6 1 2 10 100 MINimum MAXimum Query command description Select 0 001 NPLC Select 0 006 NPLC Select 0 02 NPLC Select 0 06 NPLC Select 0 2 NPLC Select 0 6 NPLC Select 1 NPLC Select 2 NPLC Select 10 NPLC Select 100 NPLC Select the minimum value Select the maximum value SENSe CURRent DC NPLCycles SENSe CURRent DC NPLCycles MIN SENSe CURRent DC NPLCycles MAX Details description Query the NPLCycles Query the minimum value Query the maximum value Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for more information abou
158. in the number specified for a parameter value 123 Numeric overflow EE A numeric parameter with exponent larger than 32000 was found 124 Too many digits EE A numeric parameter was found whose mantissa contained more than 255 digits excluding leading zeros 131 Invalid suffix EE A suffix was incorrectly specified for a numeric parameter 138 Suffix not allowed EE A suffix was received following a numeric parameter which does not accept a suffix 148 Character not allowed EE A discrete parameter was received but a character string or a numeric parameter was expected 151 Invalid string data EE An invalid character string was received 158 String data not allowed EE A character string was received but not allowed for the command 160 168 Block data errors EE Block data is not acceptable 170 178 Expression errors EE The meter does not accept mathematical expression 211 Trigger ignored EE A Group Execute Trigger GET or TRG was received but the trigger was ignored 2110 901 01 Rev A July 2012 6 3 Section 6 Troubleshooting quide Model 2110 51 Digit Multimeter Reference Manual Error code Type Description 213 Init Ignored EE An INITiate command was received but could not be executed because a measurement was already in progress Send a device clear to halt a measurement in progress and place the meter in the idle state 214 Trigger deadlock EE A tri
159. ine an average of the readings without storing the individual values An error will be generated if you attempt to transfer readings to the output buffer using the FETCh command parameter description CALC Stores up to 2000 readings in memory when INITiate is executed a Readings taken using INITiate are not stored Query command description DATA FEED Query the reading memory state Returns CALC or 2110 901 01 Rev A July 2012 5 33 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual DISPlay subsystem The display subsystem controls the display of the instrument and is summarized in DISPlay subsystem summary on page 5 21 DISPlay lt b gt This command stops measurements from showing on the display Parameters lt b gt description 0 or OFF Turn measurement display off 1 or ON Turn measurement display on Query command description DISPlay Query state of measurement display Returns 0 off or 1 on Details This command is used to enable and disable the front panel display circuitry In the OFF mode an OFF indicator is shown on the display Refer to Turning off measurement display on page 2 20 for information about how this command controls the display Section Example DISPlay ON Turns on the display 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands DISPlay TEXT lt a gt
160. ion 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual CALCulate MXB MMFactor lt n gt MIN MAX This command is used to define the m factor for the MX B calculation Parameters lt n gt description Set a value for m The value is measurement function dependent MINimum Set value to the minimum MAXimum Set value to the maximum Query command description CALCulate MXB MMFactor Query the value of m CALCulate MXB MMFactor MIN Query the minimum value of m CALCulate MXB MMFactor MAX Query the maximum value of m CALCulate NULL OFFSet lt n gt MIN MAX This command stores a null value in the instrument s Null Register You must turn on the math operation before writing to the math register Parameters lt n gt description 0 to 120 of the Select the null relative value You can set the null value to any number highest range between 0 and 120 of the highest range MINimum Set value to the minimum MAXimum Set value to the maximum Query command description CALCulate NULL OFFSet Query the null value CALCulate NULL TARGet MIN Query the null minimum value for null math function CALCulate NULL TARGet MAX Query the null maximum value for null math function CALCulate PERCent TARGet lt n gt MIN MAX This command specifies the target value for percent math function The instrument clears the value when Min Max is turned on when the power is turned off or a rem
161. it B6 of the Status Byte Register will set and the program can branch to a service subroutine when the SRQ is detected by the serial poll B6 stays set until all Status Byte summary bits are reset The serial poll automatically resets B6 of the Status Byte Register This allows subsequent serial polls to monitor bit B6 for an SRQ occurrence generated by other event types After a serial poll the same event can cause another SRQ even if the event register that caused the first SRQ has not been cleared The Master Summary Status Bit MSS is set when an enabled summary bit of the Status Byte Register is set This bit B6 may also be interpreted as a Request Service RQS bit Depending on how it is used Bit B6 of the Status Byte Register is either the Request for Service RQS bit or the Master Summary Status MSS bit e When using the serial poll sequence to obtain the status byte serial poll byte B6 is the RQS bit e When using the STB command to read the Status Byte Register B6 is the MSS Message Summary Status bit The serial poll although automatically resetting the RQS bit does not clear MSS The MSS remains set until all Status Byte summary bits are reset To use an SRO Configure the instrument to generate an SRQ when the ESB bit is set Use the Status Byte Enable Register SRE to select the low level SRQ signal set by summary bits When the status byte B6 is set the instrument automatically sends the SRQ interrupt mes
162. ivers come with examples written in several programming languages that show you how to do the most common things with the instruments Install the driver The examples are in the Microsoft Windows Start menu under Keithley Instruments gt Model Number where Model Number is the instrument model number IVI shared components The IVI shared components are a similar concept to the VISA shared components The IVI Foundation provides class drivers for e All the supported instruments DMM Scope Fgen and so on e The configuration store The IVI shared components also create the installation folders and registry keys that all IVI drivers and support files use for installation Interchangeable Virtual Instruments IVI style drivers The major problem with VXIPnP drivers was that the API was not specific to the instrument For something as standard as measuring DC volts on a digital multimeter DMM it would be a good idea if there were a set of standard functions to do this The IVI Foundation http www ivifoundation org defined a set of application programming interfaces APIs for the following instruments DMM function generator DC power supply scope switch spectrum analyzer RF signal generator and power meter They are currently working on class APIs for some other instrument types There are two types of IVI drivers IVI COM drivers use Microsoft COM technology to expose driver functionality while IVI C drivers use
163. l enable using the present null value 5 Use the lt gt A and Y keys to set the null value Note that the polarity sign can be toggled between plus and minus 6 Press the ENTER key The MATH indicator turns on You can disable the math operation by pressing the NULL key You can also disable it from the math menu as follows 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display OFF and press ENTER Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to configure and control the null feature CALCulate FUNCtion NULL Select the null feature CALCulate NULL OFFSet lt n gt Set the null value lt n gt see Note Set value 1 u resolution NOTE The null value setting range depends on the selected function For example for DCV the null value can be set from 1200 to 1200 CALCulate STATe lt b gt Enable or disable the null feature lt b gt 0 or OFF Disable the null feature 1 or ON Enable the null feature 3 50 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Limits Limit testing allows you to set high and low limit values When the reading falls outside these limits the instrument beeps and displays the HI or LO message The limit values are stored
164. lay FUNCtion2 CAPacitance Specifies capacitance as the measurement function and the second display as the display FUNCtion2 NONE Turn off secondary display 5 48 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe PERiod APERture lt n gt MIN MAX Use this command to set the aperture time for period function For frequency and period measurements aperture time is analogous to integration time Parameters lt n gt description 0 01 4 digit resolution 0 1 5 2 digit resolution 1 5 2 digit resolution This is the default value Query command description SENSe PERiod APERture Query the aperture time SENSe PERiod APERture MIN Query the minimum aperture time SENSe PERiod APERture MAX Query the maximum aperture time Details Refer to Aperture and resolution for frequency and period measurements on page 3 44 for more information about aperture time SENSe PERiod VOLTage RANGe lt n gt MIN MAX Use this command to select the function period and set a measure range Parameters lt n gt description 0 to 750 Set AC voltage range value for period function MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe PERiod VOLTage RANGe Query the measurement range SENSe PERiod VOLTage RANGe MIN Query the minimum range SENSe PERiod VOLTa
165. lect ratio function VOLTage DC RANGe lt n gt Set DCV range for the input signal lt n gt 1000 to 1000 Expected DCV reading for the input signal VOLTage DC RANGe AUTO lt b gt Enable or disable autorange for the input signal lt b gt 0 or OFF Disable autorange 1 or ON Enable autorange READ Perform ratio calculation and acquire reading A measurement configuration command can also be used for ratio calculations Use the following command to select the ratio function set the measure range set measurement resolution perform a calculation and acquire the reading MEASure VOLTage DC RATio lt range gt lt resolution gt lt range gt 1000 to 1000 Expected DCV reading of the input signal lt resolution gt See Note Measurement resolution 2110 901 01 Rev A July 2012 3 5 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual NOTE The resolution setting range for lt resolution gt depends on the selected function and range The maximum value for DC measurement is 3 00e 04 x full scale range and the minimum value is 3 00e 07 x full scale range For example for ratio 1000 V range the minimum value is 3 00e 07 x 1000 V 3 00e 04 The maximum value is 3 00e 04 x 1000 V 3 00e 01 Therefore lt resolution gt 3 00e 04 to 3 00e 01 for the ratio 1000 V range Current measurements The instrument is capable of measuring DC and AC current up to 10 A e DC current measurement ranges 10
166. lect the menu SET ADC Select to configure autozero Refer to Autozero on page 3 38 for details AUTO ZERO Selects the autozero operation Refer to Autozero on page 3 38 for details ON Turns the function or operation on OFF Turn the function off TRIG SYS Access trigger system settings Use and lt keys to display additional selections READ HOLD Set reading hold If set it will hold the stable reading and trigger a beeping sound Refer to Reading hold on page 3 36 for details STORE RDGS Set number of readings to be stored DELAY Access delay time settings for the trigger Refer to Trigger delay on page 3 35 for details AUTO Select auto delay time for the trigger AUTO is the default After selecting AUTO the menu structure will close MANUAL Select manual delay time and then select the delay time SAMPLE CNT Select number of samples per trigger RIG CN Select number of triggers SYSTEM Access system settings Use and lt keys to display additional selections SCPI ERR Check the error queue Refer to Error codes on page 6 3 for information about error queue INIT MODE Check the initial mode settings Refer to Selecting the initial operating mode on page 2 22 for details DEFAULT SET Recall the factory settings Refer to Power on settings on page 1 6 for details 2 16 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 2 General overview
167. limits stated in the instrument s one year accuracy specifications e Drivers and release notes IVI Instrument Driver driver for National Instruments LabVIEW and related release notes e Keithley I O layer and release notes e Start up Software and PC Utilities Includes KI Tool and KI Link application and Microsoft Excel Add In utility e Additional product information The product specifications are also included on the CD ROM For the latest drivers and additional support information see the Keithley Instruments website http www keithley com Organization of manual sections The information in this manual is organized into the following major categories e General overview Describes the components of the instrument and basic operation e Basic DMM operation Introduces some basic measurement functions of the instrument You will learn how to use your instrument to measure voltage current resistance frequency period continuity diodes capacitance and temperature You will learn about triggering and data buffering You will also learn about enhancing measurement performance e Theory of operation Describes basic DMM measurement techniques and concepts e Remote commands Describes the IEEE Std 488 2 common commands Provides an alphabetical listing of all commands available for the Model 2110 Provides information about using remote commands to control the instrument e Troubleshooting guide Describes self te
168. lt range gt lt resolution gt lt range gt 10to 10 Expected DCI reading 0to 10 Expected ACI reading lt resolution gt see Note Measurement resolution NOTE The resolution setting range for lt resolution gt depends on the selected function and range The maximum value for DC measurement is 3 00e 04 x full scale range and the minimum value is 3 00e 07 x full scale range For example for DCI 10 A range the minimum value is 3 00e 07 x 10 A 3 00e 07 The maximum value is 3 00e 04 x 10 A 3 00e 03 Therefore lt resolution gt 3 00e 06 to 3 00e 03 for the DCI 10 A range The maximum value for AC measurement is 1 00e 04 x full scale range and the minimum value is 1 00e 06 x full scale range For example for ACI 10 A range the minimum value is 1 00e 06 x 10 A 1 00e 05 The maximum value is 1 00e 04 x 10 A 1 00e 03 Therefore lt resolution gt 1 00e 05 to 1 00e 03 for the ACI 10 A range 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Resistance measurements There are two measurement methods for resistance e 2 wire ohms e 4 wire ohms As shown in the figure in Connections for resistance measurements on page 3 10 one pair of test leads are used for 2 wire ohms measurement A test current is applied and the voltage across the resistance under test is measured on the same leads As shown in the figure in Connections for resistance measureme
169. lt threshold voltage band is used for diode measurements Use the following commands to measure the threshold voltage of a diode FUNCtion DIODe Select the diode function READ Measure the diode and acquire the reading A MEASure command can also be used to perform the measurement and acquire the reading MEASure DIODe 3 16 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Temperature measurement For temperature measurements the instrument supports resistance temperature detector RTD probes NTC thermistors and thermocouple sensors In general RTDs have a better accuracy and long term stability than thermocouples For the instrument the default RTD sensor type is PT100 The default thermocouple sensor is type K RTD and thermistor measurements The instrument can perform temperature measurements using resistance temperature detectors RTDs The supported RTD sensor types are PT100 D100 F100 PT385 PT3916 user definable and SPRTD The supported thermistor type is NTCT The instrument supports 2 wire 3 wire and 4 wire RTD probes The default RTD sensor type is PT100 The temperature measurement range for the PT100 sensor is 200 C to 850 C 328 F to 1562 F Front panel operation Perform the following steps to measure temperature using an RTD or thermistor 1 Referring to the drawing below connect the RTD or thermistor to the Model
170. mA 100 mA 1 A 3 A and 10 A e ACcurrent measurements 1 A 3 A and 10 A NOTE Use the following procedure and commands to perform basic measurements Refer to Enhancing measurement performance on page 3 38 for details about setting measurement speed and resolution It also provides information on using other features and settings to optimize measurement performance Front panel operation Perform the following steps to measure current 1 Select a current measurement function e Press SHIFT and then DCV DCI to measure DC current e Press SHIFT and then ACV ACI to measure AC current 2 Select a measurement range auto or manual e Autorange is the power on default If manual ranging is selected MAN indicator on press SHIFT and then ESC AUTO to select autorange e For manual ranging press the RANGE A and Y keys to select a measurement range 3 Connect the signal to the instrument as shown below and observe the reading shown on the display If the input signal exceeds the selected range the overflow message OVLD will be displayed 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Connections for DC and AC current measurements A CAUTION The maximum input on the 3 A input terminals is 3 A 250 V The maximum input on the 10 A input terminals is 10 A Exceeding these input levels will damage the current fuses Figure 18 Connections for DCI and ACI
171. mands Command Description RTD Path to resistance temperature detector RTD TYPE lt name gt Specify temperature type PT100 D100 F100 P385 PT3916 USER SPRTD or NTCT TYPE Query the RTD temperature type RZERo lt n gt MIN MAX Specify the R Zero constant for the user defined RTD type value RZERO Query the R Zero constant for the user defined RTD type ALPHa lt n gt MIN MAX Specify the alpha constant for the user type value ALPHa Query the alpha constant for the user type BETA lt n gt MIN MAX Specify the beta constant for the user type BETA Query the beta constant for the user type DELTa lt n gt MIN MAX Set the delta constant for the user type value DELTa Query the delta constant for the user type SPRTD Path to the sensor R value at 0 degree Celsius RZERO lt n gt MIN MAX Specify the sensor R value at 0 degree Celsius value RZERO Query the sensor R value at 0 degree Celsius A4 lt n gt MIN MAX Specify the A4 coefficient value A4 IN MAX Query the A4 coefficient B4 lt n gt MIN MAX Specify the B4 coefficient value B4 IN MAX Query the B4 coefficient AX lt n gt MIN MAX Specify the AX coefficient value AX IN MAX Query the AX coefficient BX lt n gt MIN MAX Specify the BX coefficient value BX IN MAX Query the BX coefficient CX lt n gt MIN MAX Specif
172. math calculation NULL Select the null feature LIMit Select the limits feature to configure and control limits testing XB Select MX B polynomial math calculation DB Select the MX B calculations DBM Select the dBM reference resistance value Query command description FUNCtion Query the measurement function CALCulate LIMit LOWer lt n gt MIN MAX This command is used to specify the lower limit for limit testing The actual limit depends on which measurement function is currently selected For example a limit value of 1 is 1V for the volts functions DCV or ACV 1A for the current functions DCI or ACI 1 Q on the ohms functions 2 or 4 and 1 C F or K for the temperature function A limit value is not range sensitive A limit of 1 for DCV is 1V on all measurement ranges Parameter lt n gt description 0 to 120 of the Set the lower limit for limit testing You can set the value to any number from 0 highest range to 120 of the highest range for the present function MINimum Set specified limit to 0 MAXimum Set specified limit to 120 of the highest range Query command description CALCulate LIMit LOWer Query the lower limit for the limit testing CALCulate LIMit MIN Query the minimum value CALCulate LIMit MAX Query the maximum value 5 30 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands CALCulate LIMit UPPer lt n gt MIN MAX This comm
173. me fuse type and rating Reinsert the fuse holder turning it to the left as you push it in Ensure that the fuse holder is properly seated and secured Figure 36 Current input fuses 2110 5 1 2 DIGIT MULTIMETER TC INPUT SENSE INPUT oaw VQ gt TCOUPL 2ND DCI ACI a4 qd gt x EOOD AUTOHOLD RECALL FILTER MATH LOCAL MENU AUTO is OFF 3A fuse holder 15A fuse holder 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Appendix A Maintenance Upgrading the firmware Refer to the Keithley Instruments website http Avww keithley com for information about upgrading the firmware 2110 901 01 Rev A July 2012 A 5 Appendix B Status model In this appendix OVEN ceai fe ces cee ci so aoe ce Se ete a ese esac cd daca seas B 1 Clearing registers ANd QUEUES ccsecceeeeseeeeeeeeeeeeenseeeeees B 3 Programming enable registers cccceceeeeeseeeneeeeeeeeeeeeees B 3 Reading MOQISEOIS researc cvzses seersacescescosateesctadeesaetad Lirene B 4 Status byte and service request SRQ ceeceeeeeeeeeeeeneeeeaes B 4 Status register Sets vec se cscs ics solace acdc ia eese Rn a eaen B 8 Status reporting command summary Overview The Model 2110 provides a series of status registers and queues allowing the operator to monitor and manipulate the various instrument events The status structure is shown in following figure The heart of the status structure is the Stat
174. ment Refer to Resolution and integration time on page 3 41 for information about the number of power line cycles NPLC Use gt and lt keys to display additional selections Refer to Range selection on page 3 39 for details Select ACV to configure AC voltage as the second function Use and lt keys to select bandwidth Refer to Bandwidth and resolution for AC measurements on page 3 43 for details Use gt and lt keys to display additional selections Refer to Range selection on page 3 39 for details Select FREQ to configure frequency as the second function Refer to Aperture and resolution for frequency and period measurements on page 3 44 for details Use and lt keys to display additional selections Refer to Range selection on page 3 39 for details Select PERIOD to configure period as the second function Refer to Aperture and resolution for frequency and period measurements on page 3 44 for details Use and lt keys to display additional selections Refer to Range selection on page 3 39 for details Select TCOUPL to configure thermocouple as the second function Select TYPE to configure the thermocouple type Specify units for temperature measurement Cel means Celsius Far means Fahrenheit and K means Kelvin Specify reference junction type real or simulated REAL or SIMulated Select REAL Select SIMULATED Select VIEW REAL to the offset voltage of the real reference junction
175. ments with autozero disabled Front panel operation Perform the following steps to control autozero 1 Press the SHIFT and CONFIG MENU keys 2 Use the lt and gt keys to display SET ADC and press ENTER 3 With AUTO ZERO displayed press ENTER 4 Use the lt or gt key to display ON or OFF and press ENTER 3 38 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Remote operation Use the following command to use autozero SENSe ZERO AUTO lt name gt Control autozero lt name gt ON Enable autozero OFF Disable autozero ONCE Perform autozero once Range selection For best accuracy and resolution always use an appropriate range to perform the measurement With autorange enabled the instrument will automatically select the optimum measurement range Autorange is the power on default setting You can select a measurement range or autorange in a couple of ways e Use the front panel keys to select a range or control autorange e Use aconfiguration menu to select a range or control autorange The difference between autoranging and manual ranging is the settling time Autorange is convenient but a manually selected range can usually speed up the process If the input signal exceeds the allowable range the OvLD message is displayed The threshold for readings are 120 percent of the range for maximum and 10 percent of the range for
176. menu as follows 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display OFF and press ENTER gt A 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Remote operation Use the following commands to configure and control the average math function CALCulate FUNCtion AVERage Select the average math function CALCulate STATe lt b gt Enable or disable math operations lt b gt 0 or OFF Disable math 1 or ON Enable math Use the following commands to acquire the count minimum maximum and average readings CALCulate AVERage MINimum CALCulate AVERage MAXimum CALCulate AVERage AVERage CALCulate AVERage COUNt Null When the null feature is enabled the displayed reading is the difference between the measured input signal and the stored null also called relative value Displayed reading Measured input reading Null value You can acquire the null relative value by measurement or by specifying the value The null value is stored in volatile memory which will be cleared when power to the instrument is cycled Typical uses of the null feature e Cancel out test lead resistance that can result in inaccurate low level resistance Measurements The subsequent resistance measurement reading will exclude the test lead resistance e Establish a baseline level such as a voltage that will shift t
177. minimum NOTE The measurement range for temperature continuity and diode testing is fixed and cannot be changed Front panel operation Perform the following steps to set measurement range using the front panel keys 1 Select a measurement function 2 Select a measurement range or use autorange e Use the RANGE A and keys to select a range The MAN indicator turns on to indicate that manual ranging is being used e Pressing SHIFT and then ESC AUTO toggles the instrument between manual ranging and autorange When autorange is selected the MAN indicator is off 2110 901 01 Rev A July 2012 3 39 Section 3 Basic DMM operation Model 2110 5 Digit Multimeter Reference Manual Remote operation NOTE Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to set a measurement range lt function gt RANGe lt n gt lt function gt lt function gt RANGe AUTO lt b gt lt function gt 3 40 VOLTage DC lt n gt VOLTage AC CURRent DC CURRent AC RESistance m FRESistance Il mj REQuency VOLT FREQuency CURRent PERiod VOLT PERiod CURRent CAPacitance VOLTage DC lt b gt VOLTage AC CURRent DC CURRent AC RESistance FRESistance FREQuency VOLT FREQuency CURRent PERiod VOL
178. mmand to retrieve the stored readings FETCh Use the following command to query the number of stored readings DATA POINts Enhancing measurement performance The following features and settings can be used to optimize measurement performance e Autozero on page 3 38 e Range selection on page 3 39 e Resolution and integration time on page 3 41 e Digital filter on page 3 45 e Math operations on page 3 47 Autozero During normal operation two measurements are performed for each reading The input signal is measured and then zero is measured For the zero measurement the input signal is internally disconnected and the zero offset is measured The instrument then subtracts the zero offset from the signal measurement and displays the reading Displayed reading Input signal measurement Zero offset measurement Autozero results in accurate measured readings by canceling out the zero offset Auto zero is enabled when the instrument is turned on Autozero can be disabled to increase measurement speed at the expense of accuracy When you select a different measurement function with autozero disabled autozero will be performed once Subsequent measurements will not cancel out the zero offset Autozero can be disabled or enabled from the front panel or by using remote operation For remote operation autozero can be performed once This allows you to periodically establish a new zero baseline when performing measure
179. mum Instead of specifying a specific voltage range you can substitute MIN to set the range to its minimum value or MAX to set the range to its maximum value IEEE 488 2 common commands The IEEE 488 2 standard defines a set of common commands that perform functions like reset self test and status operations Common commands always begin with an asterisk are four to five characters in length and may include one or more parameters The command keyword is separated from the first parameter by a blank space Use a semicolon to separate multiple commands as shown below IRS IG CIS P SESE S22 ORC Refer to Common commands on page 5 4 for more information about common commands Querying parameter settings You can query the current value of most parameters by adding a question mark to the command The following command sets the sample count to 10 readings SAMP COUN 10 Then you can query the sample count by executing SAMP COUN You can also query the minimum or maximum count allowed using the following commands SAMP COUN MIN SAMP COUN MAX NOTE If you send two query commands without reading the response from the first and then attempt to read the second response you may receive some data from the first response followed by the complete second response To avoid this do not send a query command without reading the response When you cannot avoid this situation send a devic
180. n OFF Turn autozero off ON Turn autozero on ONCE ONCE issues an immediate offset Query command description SENSe ZERO AUTO Query the auto zero mode Returns 1 for on 0 for off and once Details Refer to Autozero on page 3 38 for more information about autozero 2110 901 01 Rev A July 2012 5 65 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SYSTem subsystem The SYSTem subsystem contains miscellaneous commands that are summarized in SYSTem subsystem summary on page 5 26 BEEPer lt b gt This command turns the beeper on or off for limit tests Parameters lt b gt description 0 or OFF Turn beeper off 1 or ON Turn beeper on Query command description BEEPer Query the state of the beeper Returns 0 off or 1 on Example BEEPer ON Turns on the beeper DATA POINts Query the number of readings stored in the instrument s internal memory Parameters None Query command description DATA POINTs Query the number of readings stored in the multimeter s internal memory SYSTem ERRor Query the multimeter s error queue Up to 20 errors can be stored in the queue Errors are retrieved in first in first out FIFO order Each error string may contain up to 80 characters Query This query command returns an error code For example 102 Syntax error Refer to Error codes on page 6 3 for information ab
181. n the Model 2110 can factor in the reference temperature to calculate the actual temperature reading at the thermocouple The standard reference temperature is the ice point 0 C The ice point can be precisely controlled and the National Institute of Standards and Technology NIST uses it as the fundamental reference for its voltage to temperature conversion tables However other known temperatures can be used There are two ways for the Model 2110 to acquire the cold junction temperature e The instrument can measure the cold junction using internal transducers e The user can enter the known temperature value These two references are known as e Real internal reference junction e Simulated reference junction These reference junctions are explained in the following paragraphs Real internal reference junction Real implies that temperature transducers are used to measure the cold junction This value is influenced and changed by different climate conditions and environments The Model 2110 measures the temperature of the cold junction measures the input voltage and then calculates the temperature reading at the thermocouple Simulated reference junction An example of a simulated reference junction is an ice bath The copper wire to thermocouple wire connections are immersed but electrically isolated in the ice bath known to be 0 C The temperature measured becomes an offset to the simulated reference temperature The s
182. n executed 5 Configure the instrument to generate an SRQ when the ESB bit is set SPE SPD serial polling The SPE SPD General Bus Command sequence is used to serial poll the instrument Serial polling obtains the serial poll byte status byte Typically serial polling is used by the controller to determine which of several instruments has requested service with the SRQ line Read the Status Byte by using STB Reading the status byte with the STB command is similar to a IEEE 488 serial poll However the STB command e Does not clear the RQS bit B6 in the Status Byte Register e ls processed like an ordinary command and completes only after previous commands have completed making it impossible to poll Status byte and service request commands The commands to program and read the Status Byte Register and Status Byte Enable Register are listed in the following table For details on programming and reading registers see Programming enable registers NOTE To reset the bits of the Status Byte Enable Register to 0 use 0 as the parameter value for the SRE command for example SRE 0 CLS and STATus PRESet commands have no effect on the Status Byte Enable Register Status Byte and Status Byte Enable Register commands Command Description SRE 0 Read the Status Byte Register SRE lt NRf gt Program the Status Byte Enable Register lt NRf gt 0 to 255 decimal format SRE Read the Status By
183. n fuses are used in a product replace with the same type and rating for continued protection against fire hazard Chassis connections must only be used as shield connections for measuring circuits NOT as safety earth ground connections If you are using a test fixture keep the lid closed while power is applied to the device under test Safe operation requires the use of a lid interlock fa screw is present connect it to safety earth ground using the wire recommended in the user documentation The A symbol on an instrument means caution risk of danger The user should refer to the operating instructions located in the user documentation in all cases where the symbol is marked on the instrument The A symbol on an instrument means caution risk of electric shock Use standard safety precautions to avoid personal contact with these voltages The A symbol on an instrument shows that the surface may be hot Avoid personal contact to prevent burns The 7 symbol indicates a connection terminal to the equipment frame If this symbol is on a product it indicates that mercury is present in the display lamp Please note that the lamp must be properly disposed of according to federal state and local laws The WARNING heading in the user documentation explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading in the user doc
184. n gt 1 00e 05 to 1 00e 03 for the ACI 10A range The 750 V range is treated as a 1000 V range for the purposes of resolution calculations Aperture and resolution for frequency and period measurements For frequency and period measurements aperture is analogous to integration time The aperture settings are 0 01 second 412 digit resolution 0 1 second 512 digit resolution or 1 second 512 digit resolution The default aperture is 0 1 second 5 4 digit resolution You can set display resolution for 4 2 digit or 5 2 digit resolution Changing the display resolution may change the aperture Selecting 4 digit resolution will set the aperture to 0 01 second Selecting 51 2 digit resolution will set the aperture to 0 1 second Resolution cannot be set using remote programming Front panel operation Perform the following steps to set the aperture integration time 1 Select the frequency or period measurement function e To select frequency press the FREQ key e To select period press FREQ and then CONFIG With PERIOD displayed press ENTER 2 Select the FREQ or PERIOD measurement function 3 Press the CONFIG key use the lt and gt keys to display APERTURE and then press ENTER 4 Use the lt and gt keys to display a aperture time and press ENTER Perform the following steps to set display resolution 1 Select the frequency or period measurement function e To select frequency press the FREQ key e To select peri
185. nal injury or death It may also damage the instrument Front panel operation Perform the following steps to measure continuity 1 Press the CONT key to select the continuity function 2 Press the CONFIG key and with CONT RES displayed press the ENTER key 3 Use the lt gt A and Y keys to set the threshold resistance 1 Q to 1000 Q and then press the ENTER key 4 As shown in Connections for resistance measurements on page 3 10 for 2 wire ohms connect the resistive device to the Model 2110 e If the resistance of the device is more than the threshold resistance OPEN is displayed e If the resistance is less than the threshold resistance the Model 2110 beeps and displays the resistance of the device Remote operation Use the following commands to measure continuity FUNCtion CONTinuity Select the continuity function READ Measure continuity and acquire the reading A MEASure command can also be used measure continuity and acquire the reading MEASure CONTinuity Diode measurements The Model 2110 uses a 1 mA current source for diode measurements The 1 V DC measurement range and 51 2 digit resolution are used to measure a diode The default threshold voltage band is between 0 3 V and 0 8 V and the reading rate is 0 1 PLC The threshold voltage band can be adjusted from 0 01 V up to 1 2 V The Model 2110 beeps when the measured diode voltage is within the threshold band A WARNING
186. nanG Gonan an NONON RONN A 1 LINE tuse KEP AGS MMG NI ss s2sicinaceerecadecaiiasds deneaadenaetasas aa a a A 1 COREE input TOSS replacements site vis icc ches seient adia ieai a aaie A 4 RY SACHIN tne TIAN ana datelertieaueels saat ev steaavs dulatenvlentenb lutaatels A 5 Status models sisisi da cs ta acs Sea teed oeniadane cde cdeinnudiia dew bnceaiedacecisacuneediadawe cisatenieeladaneeeeateies B 1 OV EINIGW TEETE E E AP E PEPA E PA E AAA A A E A A AET B 1 Status byte and SRO rriaire elt ON UR a a ee B 1 Staus tegister SEIS aore e O ENA NA B 1 Error Queue and Output BUHE sirene e i a E RNE B 2 Clearing registers and GUEUC S scia ctecsaccarsctcsawed uct eaaa a aaa a iae na B 3 Programming enable regiStolScrsidinsisssen a eugecetenteinded std ieleainiatedanass B 3 Reading regisleiS cecina inann ARA B 4 Status byte and Service request SRO szzic2 ceues eras sete teed ech dsrecateeeerage eit nates B 4 Status Byle Registe e seian n A e EOE AE RESER B 4 Seice regue Soie en e a E a E A E a B 5 Status SUHUGTUFE k anaip anr E EEA O ONE ETR B 6 Wsing Serial polling and SRO wt eee eer ia a eect B 6 Status byte and service request COMMANAG cceeceeeeeteteeeeeeteaeeeeaeeteaeeeeaeeseaeeeeaeeteaeeeeaeetes B 7 Status register SOLS acts saesias staat aa a eden evan aed eee B 8 Standard Event Regist ccecceessceseseeeseeeceeessaeeceaeeesaeeseaeessaeeseaeeeaeeseaeeesaeeseaeeeeaeeseaeeeeaeetes B 9 Questionable Data ReGISlercvtcinin cae
187. nce Manual Section 5 Remote commands SENSe TEMPerature TRANsducer lt name gt Use this command to select the temperature transducer type Parameters lt name gt description RTD Select transducer type RTD FRTD Select transducer typeFRTD Query command description SENSe TEMPerature TRANsducer TY Query the temperature transducer type PE Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about RTD measurement RTD coefficients and temperature calculation on page 3 19 SENSe UNIT lt name gt Use this command to select units for temperature measurement Parameters lt name gt description Cel Celsius Far Fahrenheit K Kelvin Query command description SENSe UNIT Query unit sensor type Returns type Details Select units for temperature measurement Cel means Celsius Far means Fahrenheit and K means Kelvin Refer to the following topics in the Temperature measurement on page 3 17 section for more information about units RTD coefficients and temperature calculation on page 3 19 and Entering sensor coefficients on page 3 19 2110 901 01 Rev A July 2012 5 61 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe VOLTage AC RANGe lt n gt MIN MAX Use this command to select the function ACV and set a measurement range Parameters lt n gt descri
188. nd then press the ENTER key 3 Use the A and Y keys to display INIT MODE and then press the ENTER key 4 If you want to save the current settings use the and lt keys to display SAVE DATA and then press the ENTER key Go to Step 6 5 If you want to restore the default settings use the gt and lt keys to display DEFAULT SET and then press the ENTER key 6 When finished press ESC 2 22 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 2 General overview Selecting the language You can choose the following languages for programming the remote commands e Default Select DEFAULT for compatibility with all Model 2110 features and functions as well as KI Tool and KI Link software e Compatible Select COMPATIBLE for SCPI compliant DMM language mode When you select COMPATIBLE the SYST IDNS lt Manufacturer gt lt Model gt allows you to modify the IDN return string to any manufacturer and model number The language setting is stored in nonvolatile memory To select the language use the following procedure 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the gt and lt keys to display SYSTEM and then press the ENTER key 3 Use the gt and lt keys to display LANGUAGE and then press the ENTER key 4 If you want to use the default language use the gt and lt keys to display DEFAULT and then press the ENTER key Go to Step 6 5 If you
189. nd to select the software trigger source TRIGger SOURce BUS Use the following command to take the instrument out of the idle state and into the wait for event state INITiate Use the following command to generate a trigger event TRG 2110 901 01 Rev A July 2012 3 31 Section 3 Basic DMM operation Model 2110 51 Digit Multimeter Reference Manual External triggering The instrument is triggered by a pulse received from an external instrument When the rear panel EXT TRIG external trigger terminal receives this pulse from the external trigger source the instrument performs one or more measurements After each measurement the instrument provides an output pulse on the VM COMP voltmeter complete terminal This output pulse can be used to trigger another instrument to perform additional operations A typical application for external triggering is to use the instrument with a switch system that also has external triggering capability The drawing below shows an automated test system to measure 10 DUTs The instrument is externally triggered to perform a measurement when a channel closes in the switch system The switch system then receives the voltmeter complete VM COMP pulse when the measurement is complete which then closes the next channel This handshake sequence between the instrument and switch system continues until all the 10 DUTs are measured Figure 27 DUT test system using external triggering la ofo Fal gal
190. net eni NA B 10 Status reporting command SUMMA reisene a AIAG et B 11 Communication interfaCe esisin niar randana asea earann aSa C 1 Communication IMGHAGCOS iiviicc snisicazananiesctdninecatuas Keeaadnineed nassaedaaahnocatvanlegatdaniecagis AAEREN EAA Ea C 1 SGISCUING ali IMMSM ACG iisi essresnersclesdikseazie ts Maven eevee teeta bii ani aaa ieee C 1 SB ONO MG ANGI Ses tece sacs ees E C 1 GPIB SOU Dae ccatecsrate vies pen renialtecaet spsecaessebanies ESE C 8 Supplied SOMWANC sirina eea n lahat sachs a ENR C 12 PST MS OMY E E T A E EE TE E TE E EE E E C 15 Addressinglinstruments with VISA s ies sescsccessedesicochsapcatapdewtssseaseatsoegesidusasesacdardestiserangasseecesianen C 18 2110 901 01 Rev A July 2012 v Section 1 Introduction In this section Welcome ssa aE EEEa aA 1 1 C mact Mormane en E E aA 1 1 CD ROM COMENS serinin enoaan aaa EA N 1 2 Organization of Manual sections eeeeeeeeeeeeeteeeeeeteeeeneeee 1 2 Capabilities and features eeeeeseeeseeeeseeeteeeeeseeeeeaeeeseeeneas 1 3 General iMfOmMMAliOMN cicoria i eeecshe ee nacdee ue EE 1 5 Welcome Thank you for using a Keithley Instruments product The Model 2110 Digit Multimeter DMM features 12 measurement functions and 7 math functions and has dual line display capability which allows it to display two different measurements concurrently The Model 2110 provides superior measurement accuracy and speed necessary for a broad range of applications
191. nown current and measured voltage Rout Vueas Isour The constant current method is shown below The test current sourced to the DUT depends on the selected measurement range For example for the 100 range the test current is 1 mA Because the voltmeter of the Model 2110 has very high input impedance virtually all the test current 1 mA flows through the DUT For DUT lt 1 kQ 4 wire ohms measurements should be used as shown Because the voltage is measured at the DUT voltage drop in the test leads is eliminated this voltage could be significant when measuring low ohm DUT Resistance measurement range Test current 100 ohm 1mA 1 Kohm 1mA 10 Kohm 100 pA 100 Kohm 10 pA 1 Mohm 1 pA 10 Mohm 0 1 pA 100 Mohm 0 1 pA The 2 wire constant current method is shown below Figure 31 Two wire constant current source method INPUT HI INPUT LO The 4 wire constant current method is shown below 2110 901 01 Rev A July 2012 4 3 Section 4 Theory of operation Model 2110 5 Digit Multimeter Reference Manual Figure 32 Four wire constant current source method SENSE HI INPUT HI INPUT LO SENSE LO Reference junctions 2110 901 01 Rev A July 2012 A reference junction is the cold junction in a thermocouple circuit that is held at a stable known temperature The cold junction is where dissimilar wire connections must be made As long as the temperature of the cold junction is know
192. nsitivity band for reading hold 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the lt and gt keys to display TRIG and press ENTER 3 Use the lt and gt keys to display READ HOLD and press ENTER 4 Use the lt and keys to display the desired band setting 0 01 0 1 1 0 or 10 0 and press ENTER Data buffer The instrument can store up to 2000 readings in its volatile memory The readings are stored in a first in first out FIFO order All the readings are lost when power is turned off You can store readings from all measurement functions math operations and reading hold The MEM indicator on the display turns on when the data store is enabled from the front panel Front panel operation Before using the data store select and configure a measurement function Perform the following steps to store and recall readings 1 Set the number of readings to store a Press the SHIFT and CONFIG MENU keys to display the MENU options b Use the lt and gt keys to display TRIG SYS and press ENTER c Use the lt and gt keys to display STORE RDGS and press ENTER d Use the lt gt A and Y keys to specify the number of readings to store 1 to 2000 and press ENTER 2 Press STORE to start the storage process The MEM display indicator turns on while readings are being stored wait for the storage process to finish MEM indicator turns off before recalling stored readings
193. nsor A4 coefficient SENSe TEMPerature SPRTID A4 MAX Query the maximum sensor A4 coefficient Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about the A4 coefficient RTD coefficients and temperature calculation on page 3 19 SENSe TEMPerature SPRTD B4 lt n gt MIN MAX Use this command to set the B4 coefficient for the SPRTD sensor Parameters parameter description lt n gt B4 value MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature SPRTID B4 Query the sensor B4 coefficient SENSe TEMPerature SPRID B4 MIN Query the minimum sensor B4 coefficient SENSe TEMPerature SPRID B4 MAX Query the maximum sensor B4 coefficient Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about the B4 coefficient RTD coefficients and temperature calculation on page 3 19 5 58 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe TEMPerature SPRTD AX lt n gt MIN MAX Use this command to set the AX coefficient for the SPRTD sensor Parameters lt n gt description value Select the AX coefficient for the SPRTD sensor MINimum Select the minimum value MAXimum Select the maximum value Q
194. nts on page 3 10 two pairs of test leads are used for 4 wire ohms measurements One pair of test leads applies the test current and the other set measures the voltage As a result 4 wire ohms is more accurate for low resistance measurements The disadvantages of 4 wire ohms are a longer settling time and the need to use an extra set of test leads The table below lists the measurement ranges 2 wire and 4 wire and test currents for the instrument Resistance ranges and test currents Resistance range o OkO 00 kQ 1M9 NOTE Use the following procedure and commands to perform basic measurements Refer to Enhancing measurement performance on page 3 38 for details about setting measurement speed and resolution It also provides information on using other features and settings to optimize measurement performance Front panel operation Perform the following steps to measure resistance 1 Connect the device under test to the instrument as shown below 2 Select a resistance measurement function e Press Q2 to select 2 wire ohms e Press SHIFT and then Q2 4 to select 4 wire ohms 3 Select a measurement range auto or manual e Autorange is the power on default If manual ranging is selected MAN indicator on press SHIFT and then ESC AUTO to select autorange e For manual ranging press the RANGE A and Y keys to select a measurement range 4 Observe the reading shown on the display 2110 901 01 Rev A July 2012 3
195. od press FREQ and then CONFIG With PERIOD displayed press ENTER 2 Use the DIGITS key to set display resolution Each key press toggles the display between 41 2 and 5 digits 3 44 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Remote operation NOJS Commands that use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to set the aperture time FREQuency APERture lt n gt Set aperture time for FREQ PERiod APERture lt n gt Set aperture time for PERIOD lt n gt 0 01 0 01 s aperture 0 1 0 1 s aperture 1 1 s aperture Digital filter The digital filter lets you set the filter response to stabilize noisy measurements The instrument uses a digital filter which is based on reading conversions The displayed stored or transmitted reading is an average of a number of reading conversions from 2 to 100 Filtered readings are stored in stack memory There are two types of digital filter Moving average and repeating average e The moving average filter places the specified number of reading conversions in a first in first out FIFO order The first measured reading fills up the stack The filter averages the readings in the stack to yield a single reading Each subsequent measurement conversion replaces the oldest reading in the stack
196. off use the and lt keys to display OFF and then press the ENTER key 6 When finished press ESC Remote operation To turn measurement display off use the following command DISPlay OFF To turn measurement display on use the following command DISPlay ON To display the message maximum 16 characters you type in on the secondary display use the following command DISPlay TEXT lt a quoted string gt To clear the message displayed use the following command DISPlay TEXT CLEar Turning the beeper off or on The Model 2110 beeps when certain conditions are met or when an error occurs You can only turn off the beeper for some operations The beeper sound remains in other operations such as front panel key presses The beeper is turned on by default The beeper state is stored in nonvolatile memory and the default will be restored when the instrument has been turned off or after a remote interface reset When the beeper is turned off you will not hear beeps when the following conditions occur e Anew minimum or maximum is found in Min Max operation e A stable reading is detected and held e The test voltage is within the limits in diode testing e The source signal fails the limit testing Turning the beeper off has no effect on the following conditions e An error occurs e Any button on the front panel is pressed e The threshold value is exceeded in continuity testing You can cont
197. oia UEa reak a anaona iik 3 17 Capacitance M ASUreMeNs ccceeccececeeeseeeseaeeeseeeceaeeesaeesaeeesaeesaeeesaeesaeeeaaeesiaeeeaeeseaeeeates 3 24 Secondary measurement UNCiON psresipsae eee E E e A aE e EEES 3 26 Taggorng and data DUNCicaisacent ance 3 28 Front paneltiggetingeiirirar a E ea aaa ea eaaa 3 28 Remote trigger ienna onei a eS a E ESE E err ee 3 30 Tigger Seting Sennen E EEE AA AE OR piexweensneres 3 33 Data BUNE gare tie ere ene ee a eee SE a a rere reer eee eer eer ree 3 37 Enhancing measurement performance cccccceesenceeeeeeeeeeeeeeeeeeeaaeeeseeaaeeeseeseneeeeeneeaeees 3 38 PRUNOZ GUO A PE E E A N E E T E E E E E Range selection Resolution ang integration time eseese AN icin ck 3 41 Digital UT Eas eso cecccte sth ecacdaetet ec comer anencteict cots cad cactee house A ccacemtencensmcncrncts 3 45 NIATMODGANOMS scpccesdcetecastasitan3 a A Ea A 3 47 Theory of OPSAU OW wsscssscsccesicecticececpecetahecncicecacicaenerccc ences teen ee ence 4 1 AC voltage measurements and Crest faCtOr ccceccceeceeceeeeeeeeeeeeeeeeeaaeeeeeeeceaeeesaaeeeeaaeesenees 4 1 DMM resistance measurement Methods cceceeccceeeeeeceeeeeeeceeeeeeeaeeeseseaeeeseeaaeenseeaaeeeteees 4 3 ROETERSNCE JUNCHONS einan eatin ence cee 4 4 Reali intermal rererence UMGUGMcis c ccctictad cothestecactetceleascecdtbencs ceacuetecneicant ESA 4 4 Simulated reference JUNCHO Mucenici e ied E e a EE 4 4 ACCURACY CAUTO a a a aaa 4 5 Calculating DC and AC
198. on for more information about RTD type RTD coefficients and temperature calculation on page 3 19 SENSe TEMPerature SPRTD RZERo lt n gt MIN MAX Use this command to set the sensor R value at 0 degree Celsius Parameters lt n gt description value Select sensor R value at 0 degree Celsius MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature SPRTD RZEROo Query the sensor R value at 0 degree Celsius SENSe TEMPerature SPRTD RZERo MIN Query the minimum sensor R value at 0 degree Celsius SENSe TEMPerature SPRTID RZERo MAX Query the maximum sensor R value at 0 degree Celsius Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about SPRTD type RTD coefficients and temperature calculation on page 3 19 2110 901 01 Rev A July 2012 5 57 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe TEMPerature SPRTD A4 lt n gt MIN MAX Use this command to set the A4 coefficient for the SPRTD sensor Parameters lt n gt description value A4 value MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature SPRTD A4 Query the sensor A4 coefficient SENSe TEMPerature SPRID A4 MIN Query the minimum se
199. operating an instrument ensure that the line cord is connected to a properly grounded power receptacle Inspect the connecting cables test leads and jumpers for possible wear cracks or breaks before each use When installing equipment where access to the main power cord is restricted such as rack mounting a separate main input power disconnect device must be provided in close proximity to the equipment and within easy reach of the operator For maximum safety do not touch the product test cables or any other instruments while power is applied to the circuit under test ALWAYS remove power from the entire test system and discharge any capacitors before connecting or disconnecting cables or jumpers installing or removing switching cards or making internal changes such as installing or removing jumpers Do not touch any object that could provide a current path to the common side of the circuit under test or power line earth ground Always make measurements with dry hands while standing on a dry insulated surface capable of withstanding the voltage being measured The instrument and accessories must be used in accordance with its specifications and operating instructions or the safety of the equipment may be impaired 11 07 Do not exceed the maximum signal levels of the instruments and accessories as defined in the specifications and operating information and as shown on the instrument or test fixture panels or switching card Whe
200. operation complete command on page 5 7 and OPC operation complete query on page 5 7 for details 1 Not used 2 Set to 0 2 Query Error QYE 4 Set bit indicates that you attempted to read data from an empty Output Buffer a new command line was received before a previous query was read or both the input and Output Buffers are full 3 Device Dependent 8 Set bit indicates that an instrument operation did not execute Error DDE properly due to some internal condition 4 Execution Error 16 Set bit indicates that the instrument detected an error while trying EXE to execute a command 5 Command Error 32 Set bit indicates that a command error has occurred Command CME errors include e EEE 488 2 syntax error instrument received a message that does not follow the defined syntax of the IEEE 488 2 standard e Semantic error instrument received a command that was misspelled or received an optional IEEE 488 2 command that is not implemented e The instrument received a Group Execute Trigger GET inside a program message 6 Not used 64 Set to 0 7 Power ON PON 128 Set bit indicates that the instrument has been turned off and turned back on since the last time this register has been turned off 2110 901 01 Rev A July 2012 B 9 Appendix B Status model Model 2110 51 Digit Multimeter Reference Manual Monitor the contents of the Output Buffer by using OPC The OPC command ca
201. ore 10 mV of error is introduced into the voltage measurement 3 26 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Figure 25 measure DCI and DCV from the same input source TC INPUT SENSE INPUT VSOURCE CATI 1000V CATI 600v L Front panel operation Perform the following steps to perform secondary function measurements 1 Select the primary measurement function and connect the device under test or signal to the input of the instrument 2 Press the SHIFT and ENTER 2ND keys 3 Use the lt and gt keys to display the second function and press ENTER 4 If prompted use the lt gt A and Y keys and the ENTER key to configure the secondary measurement function 5 Observe the readings on the display The primary function reading is shown in the primary display and the secondary function reading is shown in the secondary display 2110 901 01 Rev A July 2012 3 27 Section 3 Basic DMM operation Model 2110 51 Digit Multimeter Reference Manual Remote operation The following command is used to select a primary or secondary function FUNction 1 2 function When you use the number one 1 or no number the primary function is selected When you use the number two 2 the secondary function is selected Here are some examples FUNCtion VOLTage DC Selects DCV as primary function FUNCtionl VOLTage DC Selects DCV as primary function FU
202. ore switching the equipment off Failure to do so could result in the equipment being damaged Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual 2 2 To turn a Model 2110 on and off 1 Before plugging in the power cord make sure that the front panel POWER switch is in the OFF position 2 Connect the Model 2110 protective earth safety ground located on the rear panel see Rear panel overview on page 2 17 3 Connect the female end of the supplied power cord to the AC receptacle on the rear panel 4 Connect the male end of the power cord to a grounded AC outlet A WARNING The power cord supplied with the Model 2110 contains a separate protective earth safety ground wire for use with grounded outlets When proper connections are made the instrument chassis is connected to power line ground through the ground wire in the power cord In addition a redundant protective earth connection is provided through a screw on the rear panel In the event of a failure not using a properly grounded protective earth or grounded outlet may result in personal injury or death due to electric shock 5 To turn your instrument on press the front panel POWER switch to place it in the ON position 6 To turn your instrument off press the front panel POWER switch to place it in the OFF position Voltage selection A WARNING Before changing the voltage setting ensure that the instrument is disconnected from t
203. ote interface reset occurs Parameters lt n gt description Specify the measurement function dependent target value 5 32 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands MINimum Set to minimum value MAXimum Set to maximum value Query command description CALCulate PERCent TARGet Query the target value for percent math function CALCulate PERCent TARGet MIN Query the target minimum value for percent math function CALCulate PERCent TARGet MAX Query the target maximum value for percent math function CALCulate STATe lt b gt Turn the selected math function on or off Parameters lt b gt description 0 or OFF Turn selected math function on 1 or ON Turn selected math function off Query command description CALCulate STATe Query the state of the selected math function Returns 0 off or 1 on DATA FEED RDG_STORE CALCulate This command selects whether readings taken using the INITiate command are stored in the multimeter s internal memory default or not stored at all In the default state DATA FEED RDG_STORE CALC up to 2000 readings are stored in memory when INITiate is executed The MEASure And CONFigure commands automatically select CALC With memory disabled DATA FEED RDG_STORE readings taken using INITiate are not stored This may be useful with the Min Max operation since it allows you to determ
204. out the error codes 5 66 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SYSTem VERSion Query the present SCPI version Query This query command returns the SCPI version For example W991 lt Q SYSTem LOCal Place the instrument in the local mode All keys on the front panel are fully functional Query None SYSTem REMote Place the multimeter in the remote mode All buttons on the front panel except the LOCAL button are disabled Query None TRIGger subsystem The commands in this subsystem configure and control the trigger operations and are summarized in TRiGger subsystem summary on page 5 27 When the instrument is triggered to start performing measurements it stores a specified number of measurement readings in the data buffer memory The total number of measurements the instrument takes is the product of the trigger count and sample count See Sample count on page 3 34 and Trigger count on page 3 34 for details Use the following command to place the instrument in the wait for trigger state INITiate on page 5 17 Use the following command to retrieve the stored readings FETCh 1 2 on page 5 16 Use the following command to query the number of stored readings DATA POINts on page 5 66 2110 901 01 Rev A July 2012 5 67 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SAMPle COUNt l
205. ption 0 to 750 Select the measurement range in volts MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe VOLTage AC RANGe SENSe VOLTage AC RANGe MIN SENSe VOLTage AC RANGe MAX Query the measurement range Query the minimum range Query the maximum range SENSe VOLTage AC RANGe AUTO lt b gt This command turns autorange on or off for AC voltage measurements Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description SENSe VOLTage AC RANGe AUTO Query AC voltage autorange state 5 62 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe VOLTage AC RESolution lt n gt MIN MAX Use this command to select resolution for AC voltage measurements ACV Parameters lt n gt description 1 00e 06 to 1 00e 04 ACV range Select the resolution of the measurement MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe VOLTage AC RESolution Query the measurement resolution SENSe VOLTage AC RESolution MIN Query the minimum resolution SENSe VOLTage AC RESolution MAX Query the maximum resolution Details Refer to Bandwidth and resolution for AC measurements on page 3 43 more information about resolution SENSe VOLTage DC RANGe lt n
206. r example this manual lists commands in the SCPI command subsystem reference on page 5 19 topic using the long form version However the short form version is indicated by upper case characters Examples gt SYSTem REMOTE ong orm 5 SIS B IRMEE MAL short form SYSTem REM long form and short form combination Each command word must be in long form or short form and not something in between For example SYSTe REMo will generate an error The command will not be executed Short form rules Use the following rules to determine the short form version of any SCPI command e If the length of the command word is four letters or less no short form version exists For example AUTO AUTO e The following rules apply to command words that exceed four letters e If the fourth letter of the command word is a vowel delete it and all the letters after it For example immediate imm e Rule exception The short form version of the following command uses only the first two letters of the word TCouple tc e Ifthe fourth letter of the command word is a consonant retain it but drop all the letters after it For example format form e Ifthe command contains a question mark query or a non optional number included in the command word you must include it in the short form version Example delay del e Command words or characters that are enclosed in brackets are optional and need not be included in the p
207. ranging from production testing to bench top applications The Model 2110 meets application requirements for production engineers research and development engineers test engineers scientists students and anyone else making measurements in either system applications or on the bench Contact information If you have any questions after reviewing this information please use the following sources 1 Keithley Instruments website http www keithley com 2 Keithley web forum htto forum keithley com 3 Call Keithley Instruments corporate headquarters toll free inside the U S and Canada only at 1 888 KEITHLEY 1 888 534 8453 or from outside the U S at 1 440 248 0400 For worldwide contact numbers visit the Keithley Instruments website http www keithley com Section 1 Introduction Model 2110 51 Digit Multimeter Reference Manual CD ROM contents A CD ROM is shipped with each Model 2110 order The Model 2110 Product Information CD ROM contains e Reference Manual Includes a description of connections operation information programming information and maintenance information Users looking for basic operating information programmers looking for a command reference and users looking for an in depth description of the way the instrument works including troubleshooting and optimization should refer to the Reference Manual e Calibration Manual Includes procedures to verify that the Model 2110 accuracy is within the
208. re summarized in CALCulate subsystem summary on page 5 20 There are ten math operations Only one of them can be enabled at a time They either store data for later use or perform mathematical operations on the readings Note that the math operations are available to all measurement functions except continuity and diode testing CALCulate AVERage AVERage This command reads the average value of all readings taken since the Min Max operation was enabled The instrument clears the value when Min Max is turned on when the power is turned off or a remote interface reset occurs CALCulate AVERage COUNt This command reads the average value of all readings taken since the Min Max operation was enabled The instrument clears the value when Min Max is turned on when the power is turned off or a remote interface reset occurs CALCulate AVERage MINimum This command reads the minimum value found during the Min Max operation The instrument clears the value when Min Max is turned on when the power is turned off or a remote interface reset occurs CALCulate AVERage MAXimum This command reads the maximum value found during the Min Max operation The instrument clears the value when Min Max is turned on when the power is turned off or a remote interface reset occurs 5 28 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands CALCulate DB REFerence lt n gt MIN MAX T
209. readings is the product of the trigger count and sample count For example if the trigger count is 10 and the sample count is 20 the total number of measurements is 200 20 x 10 See Setting sample count using remote operation on page 3 34 and Setting trigger count using remote operation on page 3 34 to set the counters Triggering example Assume the sample count is 10 and the trigger count is two 2 The instrument will accept two trigger events Upon receiving the first trigger 10 measurements are performed When the second trigger is received 10 more measurements are performed The instrument then returns to the idle state 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 3 Basic DMM operation Trigger sources There are three trigger sources for remote operation Immediate software or bus and external Immediate triggering When the instrument is in the immediate trigger mode a trigger is internally generated immediately after it goes into the wait for event state The internal immediate trigger mode is only available using remote operation and is the default setting for the remote interface Use the following command to select internal immediate triggering TRIGger SOURce IMMediate Software triggering Software triggering is similar to single triggering Instead of using the TRIGGER key on the front panel a command generates a trigger event Use the following comma
210. roduct users are Responsible body is the individual or group responsible for the use and maintenance of equipment for ensuring that the equipment is operated within its specifications and operating limits and for ensuring that operators are adequately trained Operators use the product for its intended function They must be trained in electrical safety procedures and proper use of the instrument They must be protected from electric shock and contact with hazardous live circuits Maintenance personnel perform routine procedures on the product to keep it operating properly for example setting the line voltage or replacing consumable materials Maintenance procedures are described in the user documentation The procedures explicitly state if the operator may perform them Otherwise they should be performed only by service personnel Service personnel are trained to work on live circuits perform safe installations and repair products Only properly trained service personnel may perform installation and service procedures Keithley Instruments products are designed for use with electrical signals that are rated Measurement Category and Measurement Category II as described in the International Electrotechnical Commission IEC Standard IEC 60664 Most measurement control and data I O signals are Measurement Category and must not be directly connected to mains voltage or to voltage sources with high transient overvoltages Measurement Category
211. rogram message Angle brackets Angle brackets lt gt are used to denote a parameter type Do not include the brackets in the program message For example HOLD STATe lt b gt The lt b gt indicates that a Boolean type parameter is required Thus to enable the Hold feature you must send the command with the ON or 1 parameter as follows HOLD STATe ON or 1 Brackets Some command words are enclosed in brackets These brackets are used to denote an optional command word that does not need to be included in the program message For example INITiate IMMediate These brackets indicate that IMMediate is implied optional and does not have to used Thus the above command can be sent in one of two ways INITiate or INTiate IMMediate Notice that the optional command is used without the brackets When using optional command words in your program do not include the brackets 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands Braces Braces enclose the parameter choices for a given command string The braces are not sent with the command string Vertical bar A vertical bar separates multiple parameter choices for a given command string Using the MIN and MAX parameters You can substitute MINimum or MAXimum in place of a parameter for many commands For example consider the following command VOLTage DC RANGe MINi
212. rol the beeper from either the front panel or the remote interface operation 2110 901 01 Rev A July 2012 2 21 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual Front panel operation To turn the beeper on or off use the following procedure 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the gt and lt keys to display SYSTEM and then press the ENTER key 3 Use the gt and lt keys to display BEEP and then press the ENTER key 4 If you want to turn the beeper on use the gt and lt keys to display ON and then press the ENTER key Go to Step 6 5 If you want to turn the beeper OFF use the and lt keys to display OFF and then press the ENTER key 6 When finished press ESC Remote operation To turn the beeper off use the following commands SYSTem BEEPer SYSTem BEEPer STATe OFF To turn the beeper on use the following commands SYSTem BEEPer SYSTem BEEPer STATe ON Selecting the initial operating mode The Model 2110 provides the option to save the current operating settings or restore the factory default settings when the instrument is turned on Refer to Power on settings on page 1 6 for information about default settings To select the initial mode use the following procedure 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the and lt keys to display SYSTEM a
213. run NI MAX or the VISA Interactive Utility See their documentation for information If you have the Agilent IO Libraries on your system you can run Agilent Connection Expert to check out your USB instruments See their documentation for information C 6 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface Pass fail output from USB connector The USB connector on the instruments rear panel is a series B connector When the USB interface is disabled IEEE 488 interface is selected the internal pass and fail TTL output signals limit testing will be transmitted via the USB port The pass and fail signals are low true and indicate the Math Pass Fail Limit Test result for the next reading to be output to the GPIB interface The signals are active low for approximately 2ms 100 p sec for each reading taken The following figure shows the USB connector series B Figure 43 USB connector Type B 2 1 re Instrument connector rear panel Floating Limit Test Fail io i Limit Test Pass 3s 5 GND _ o NOTE If you turn off the USB interface the Pass Fail output function will turn on automatically If you want to use the Pass Fail signal output you must use the GPIB interface for remote control Disconnect the USB cable from your instrument while using the Pass Fail signal output To turn on and off the pass fail output 1 Press the SHIFT key and th
214. s for capacitance measurements are 1 nF 10 nF 100 nF 1 uF 10 uF 100 pF 1 mF and 10 mF Resolution is ignored for capacitance Refer to Capacitance measurements on page 3 24 for more information about this command 5 38 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe CAPacitance RANGe AUTO lt b gt This command turns capacitance autorange on or off Parameters lt b gt description 0 or OFF Turn autorange off 1 or ON Turn autorange on Query command description SENSe CAPacitance RANGe AUTO Query autorange state SENSe CURRent AC RANGe lt range gt MIN MAX Use this command to select the function ACI and set a measurement range Parameters lt n gt description 0 to 10 Select the measurement range in amps MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe CURRent AC RANGe Query the measurement range SENSe CURRent AC RANGe MIN Query the minimum range SENSe CURRent AC RANGe MAX Query the maximum range 2110 901 01 Rev A July 2012 5 39 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe CURRent AC RESolution lt n gt MIN MAX Use this command to select resolution for AC current measurements ACI Parameters lt n gt description 1 00e 06 to 1 00e 04 ACI range Select the resolution of the measurement MIN
215. s the CONFIG key to display configuration options BAND WIDTH Use and lt keys to select bandwidth Refer to Bandwidth and resolution for AC measurements on page 3 43 for details RANGE Use and lt keys to display additional selections Refer to Range selection on page 3 39 for details Q2 Press the Q2 key CONFIG Press the CONFIG key to display configuration options NPLC Use gt and lt keys to select resolution adjustment Refer to Resolution and integration time on page 3 41 for information about the number of power line cycles NPLC RANGE Use gt and lt keys to display additional selections Refer to Range selection on page 3 39 for details FREQ Press the FREQ key CONFIG Press the CONFIG key to display configuration options PERIOD Refer to Aperture and resolution for frequency and period APERTURE measurements on page 3 44 for details RANGE Refer to Frequency and period measurements on page 3 12 for INPUT JACK information about RANGE and INPUT JACK selections CONT Press the CONT key CONFIG Press the CONFIG key to display configuration options CONT RES Select CONT RES Use the lt and gt A and Y keys to set the threshold resistance 1 Q to 1000 Q TEMP Press the TEMP key CONFIG Press the CONFIG key to display configuration options SENSOR Use and lt keys to select a default sensor coefficient Refer to RTD coefficients and temperature calculation on page 3 19 for details USER Selec
216. s the ENTER key to enter edit mode 3 Use the gt lt keys to select the digit to edit 4 Usethe A WY keys to set the appropriate value 5 Press the ENTER key to select the value or press the ESC key to cancel the change Main menu You can configure instrument operation through the front panel by pressing keys to display menus Refer to the following table for information about e Keys that you press to display menus These keys are in a BOLD font If the configuration option relates to the key s shifted function the key s shifted function is listed in parenthesis after the key name e Menus are indented and listed under the key that you press to display them e Some menus have submenus Submenus are indented under the menus 2 12 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 2 General overview Keys menus and selection Description DCV Press the DCV key CONFIG Press the CONFIG key to display configuration options NPLC Use gt and lt keys to select resolution adjustment Refer to Resolution and integration time on page 3 41 for information about the number of power line cycles NPLC RANGE Use and lt keys to display additional selections Refer to Range selection on page 3 39 for details RATIO Select RATIO Refer to Ratio measurements on page 3 4 for details ACV Press the ACV key CONFIG Pres
217. sage to the bus controller which may poll the instruments on the bus to identify which one requested service Querying the Status Byte that is using the serial poll or querying the event register with the summary bit that caused the service request will clear the request service To use a Serial poll You can send the serial poll message to read the Status Byte Summary Register The serial poll will clear the RQS bit automatically in the Status Byte Summary Register but no other bits will be affected Since synchronization between the bus controller program and the instrument is not guaranteed by the IEEE 488 2 standard you can send the OPC command to make sure that commands are completed Using a serial poll before RST CLS or other commands have completed can cause reported conditions to be reported again B 6 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix B Status model Knowing when a command sequence is finished Use the following commands to find out when a command sequence has finished 1 Senda DCL general bus command to clear the Output Buffer and bus controller 2 Senda CLS command to clear all bits in the Event Register 3 Senda ESE 1 command to instruct the instrument to set the ESB bit in the Status Byte when the OPC event in the ESR is set 4 Send the OPC command to set the Operation Complete OPC bit in the Standard Event Register after all pending commands have bee
218. seeeeerssneeees 5 64 SENSe VOLTage DC RESolution lt n gt MIN MAX ccccccccesssececeeneeeeseneeeeessaeeeessnseeesenneees 5 65 SENSE ZERO AUTO mains srine O wies aoaies E eee ea 5 65 SY S Temi SUSY SUN Vis oe ans ss sean cates sinc ved dtl aaa aaa A aaa aaa a aaia 5 66 ee alec Ree Oe reer revere ere rere rere retreat yee ore ere arrester rer 5 66 DATA POINIS oria are E EES Ea E TEE EART AS oem 5 66 Oe VONCMMERAGK at ssrctisccascecascetiasststestcrette decatisunessetesslectastas e aE A ERT 5 66 Sh dey Re Le VERSION aeemher rere rere re areerr cine ot renererearttre ere ereree re errr ert errr erect r cre rer tre re 5 67 OY STEREO C Alapan a E ENR 5 67 SYSTEM REME nien na aeia 5 67 TRIGOET SUDSVSTE NO iiaaaeaoe iaaea 5 67 SAMPE COUNten gt MINIMAX lt osinean ano n a E aeleee evan elo 5 68 TRIGger COUNt lt n gt MIN MAX INFinite seseeseeeeeieeeeeisiisrsrsrirsrnrnrisrstirrsrnrisrsrntrersrnnerernerens 5 68 TRIGO DELay lt ie MINIMAX ca E A A AE 5 69 TRIGO DELIV AUTO lt Dhion e N E N 5 69 TRIGger SOURCE eaAME Seino a iA 5 70 Troubleshooting GUlde sre r EEE 6 1 TODOS NOIN enana a S thieiashteduansies 6 1 RUNNING a seles ranson RA 6 2 ENO CO OOS oo a E as venesaundacdenstvecates naasegrea 6 3 iv 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Table of Contents DAE PS rics caie errata deca tees ete cael eek been cede tettinleiaediccietebinans 7 1 Additonal Model 2110 informato Misirin E 7 1 Maimte
219. source string that gets passed in with the viOpen function in VISA C or with the Open method on the VISA COM resource manager object For detailed information about the format of the resource string refer to the VISA specification VPP4 3 at the IVI Foundation website or refer to the help file provided by the vendor of the VISA implementation you are using The following sections describe the resource strings for some of the communication types that Keithley supports Any field that has square brackets around it is optional and will revert to a default value 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface Addressing instruments using USB USB board manufacturer ID model code serial number USB interface number INSTR board Is not used 0 manufacturer IDis the USB org reserved four digit hexadecimal code for the instrument vendor company Keithley Instruments hexadecimal code is 0556 model code is the model number of the instrument For example when addressing a Model 707B use 707B serial number is the serial number of the instrument USB interface number identifies which USBTMC interface on the instrument to address usually 0 NOTE Also see USB VISA identifiers Addressing instruments through GPIB There are two different resource classes in VISA for the GPIB bus INSTR is the basic class that everyone uses It allows appl
220. splay a screen with software installation links If you need to manually open the web page use a file explorer to navigate to the CD ROM drive and open the file named index html 4 From the web page select the Software category and click Keithley I O Layer 5 Accept all defaults 6 Click Next 7 Click Install 8 Reboot your computer To install the Keithley I O Layer from the Keithley website 1 Download the Keithley I O Layer Software from the Keithley Instruments website hitp www keithley com as described in the note The software is a single compressed file and should be downloaded to a temporary directory 2 Run the downloaded file from the temporary directory 3 Follow the instructions on the screen to install the software 4 Reboot your computer Special installation considerations Situations may occur during installation that cannot be handled automatically by the installation utility The installation utility will warn you if one of these situations is detected The sections below describe the action you must take before the installation can be completed C 16 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix C Communication interface Mismatch between IVI Shared Components and IVI Engine Detected The IVI Shared Components and IVI Engine are software components that may be installed by various test and measurement software applications instrument drivers and so on
221. st procedure and error codes e Maintenance Information on instrument maintenance including line fuse replacement and firmware upgrades e Status model Description of the Model 2110 status model Bookmarks for each section of this manual are provided in the PDF version of the documentation The manual sections are also listed in the Table of Contents located at the beginning of this manual For more information about bookmarks see Adobe Acrobat or Reader help PEE 8410 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 1 Introduction Capabilities and features The Keithley Instruments Model 2110 is a rugged and versatile 5 2 digit resolution digital multimeter with a dual line vacuum fluorescent display VFD built in USB interface and optional GPIB interface The Model 2110 has 0 0012 one year basic DC voltage accuracy and 0 020 one year basic resistance accuracy up to the 1 MO range At 5 digits the Model 2110 delivers over 200 readings via the USB remote interface At the fast 4 digit setting it reads up to 50 000 readings This is ideal for production applications and monitoring applications where speed is critical Figure 1 Keithley Model 2110 5 1 2 Digit Multimeter rom pev eeji a2 i reco J con re eren amp 0 s DDE Ssd Measurement ranges and functions The Model 2110 provides a wide number of measurement ranges and functions including DC vol
222. strument drivers that were dependent on the existing VISA to malfunction The recommended way to resolve this situation is to perform the following steps 1 Exit the Keithley I O Layer software when the warning message is displayed Make note of the VISA vendor in the warning message if any 2 Uninstall the non NI VISA software 3 Uninstall Tektronix VISA by selecting OpenChoice TekVISA from the Control Panel Add Remove programs list 4 Uninstall Agilent VISA by selecting Agilent I O Libraries Suite from the Control Panel Add Remove programs wizard list 5 Uninstall other versions of VISA by selecting the appropriate entry from the Control Panel Add Remove Programs Wizard list 6 Restart the Keithley I O Layer software installation 7 If the pre existing version of VISA was supplied by Tektronix or Agilent as displayed in the warning message you may safely reinstall that version of VISA once Keithley I O Layer software installation is complete When you reinstall Tektronix or Agilent VISA it may prompt you to preserve the current VISA version which you should do This will usually restore the operation of any dependent applications or drivers 8 Ifthe pre existing version of VISA was supplied by a vendor other than Tektronix or Agilent we recommend that you do not reinstall it because this will likely cause the Keithley I O Layer software to malfunction 2110 901 01 Rev A July 2012 C 17 Appendix C Communication interf
223. t lt resolution gt see note 1 Description see note 2 CURRent DC 10 to 10 3 00e 07 to 3 00e 04 Amperes CURRent AC 0 to 10 1 00e 06 to 1 00e 04 Amperes VOLTage DC 1000 to 1000 3 00e 07 to 3 00e 04 Voltage VOLTage AC 0 to 750 1 00e 06 to 1 00e 04 Voltage CAPacitance 0 to 10e 3 N A Farads VOLTage DC RATio 1000 to 1000 3 00e 07 to 3 00e 04 Voltage RESistance 0 to 100e6 3 00e 07 to 3 00e 04 Ohms FRESistance 0 to 100e6 3 00e 07 to 3 00e 04 Ohms FREQuency VOLTage 0 to 750 N A Voltage FREQuency CURRent 0 to 10 N A Amperes PERiod VOLTage 0 to 750 N A Voltage PERiod CURRent 0 to 10 N A Amperes CONTinuity N A N A N A DIODe N A N A N A TCOuple N A N A N A EMPerature N A N A N A NOTE 1 Do not use the number of digits to specify a resolution instead use the same units as the measurement function For example specify the resolution in volts and the frequency in hertz The resolutions provided are of range Refer to Bandwidth and resolution for AC measurements on page 3 43 for more information about AC measurements Refer to Integration time and resolution for DC and resistance measurements on page 3 41 for information about DC measurements 2 Information listed in the description column is for reference only This column lists the measurement unit for the lt function gt Do not include units in commands Query Command Description CONFigure Query the selected function 2110 901 01 Rev A July 2012 5 15 Sec
224. t 10 M ohm for all ranges Parameters lt b gt description 0 or OFF Turn automatic input resistance mode off 1 or ON Turn automatic input resistance mode on Query command description INPut IMPedance AUTO Query the input resistance mode Returns 0 off or 1 on Details This command is device specific to the Model 2110 5 36 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands SENSe subsystem The sense subsystem controls measurement configuration and is summarized in SENSe subsystem summary on page 5 22 SENSe AVERage COUNt lt n gt MIN MAX Use this command to set the number of readings the digital filter stores before calculating the average of the stored readings The digital filter averages the readings to yield a single reading Parameters lt n gt description 2 to 100 Select the number of readings the digital filter stores before calculating the average MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe AVERage COUNt Query the number of readings to average SENSe AVERage COUNt MIN Query the minimum number of readings to average SENSe AVERage COUNt MAX Query the maximum number of readings to average Details Refer to Digital filter on page 3 45 for more information about using this command SENSe AVERage STATe lt b gt Use this command to turn the di
225. t Multimeter Reference Manual Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation RTD coefficients and temperature calculation The table below shows the default coefficient values for the PT100 D100 F100 PT385 and PT3916 RTD sensors For the Model 2110 these values are fixed and cannot be changed However if you need to use different coefficient values for these sensors you can use the USER sensor type The USER sensor type allows you to enter your own values Sensor default coefficients Sensor type Alpha a Beta Deta RZero PT385 0 003850 0 11100 1 50700 PT3916 0 003916 0 11600 1 50594 Sa aa eel en NTCT 1 129241e 3 2 341077e 4 8 77546e 8 The following equations are used to calculate RTD temperature Whent lt 0 C Rr Ro 14 At Bt Ct t 100 When 0 C lt t lt 630 C Ri Ro 1 At Bt Where A a 1 6 100 B a5 10 C a e 10 For the standard platinum RTD SPRTD sensor the ITS 90 International Temperature Scale standard provides two reference equations for standard platinum thermometers covering a temperature range from 18 8033 K to 1234 93 K However one SPRTD usually cannot cover the entire range so the temperature range is divided into a few subranges These subranges depend on the calibration point of the temperature scale and are based on the melting or triple points of various pure substances For an exact list of the required elements
226. t NPLC SENSe CURRent DC RANGe lt n gt MIN MAX Use this command to select the function DCI and set a measure range Parameters lt n gt description 10 to 10 Select the measurement range in amps MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe CURRent DC RANGe SENSe CURRent DC RANGe MIN SENSe CURRent DC RANGe MAX 2110 901 01 Rev A July 2012 Query the measurement range Query the minimum range Query the maximum range Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe CURRent DC RESolution lt n gt MIN MAX Use this command to select integration time for DC current measurements DCI NOJS When you set the integration time the instrument automatically updates the reading resolution Parameters lt n gt description 3 00e 07 to 3 00e 04 DCI Select the resolution of the measurement range MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe CURRent DC RESolution Query the resolution setting SENSe CURRent DC RESolution MIN Query the minimum resolution setting SENSe CURRent DC RESolution MAX Query the maximum resolution setting Details Refer to Integration time and resolution for DC and resistance measurements on page 3 41 more information about resolution SENSe CURRent AC RANGe AUTO
227. t n gt MIN MAX Use this command to set the number of readings samples the instrument takes per trigger Select a number from 1 to 50 000 readings per trigger Parameters lt n gt description 1 to 50 000 Select the number of readings samples the instrument takes per trigger MINimum Select the minimum value MAXimum Select the maximum value Query command description SAMP le COUNt Query the number of samples SAMPle COUNt MIN Query the minimum number of samples SAMPle COUNt MAX Query the maximum number of samples TRIGger COUNt lt n gt MIN MAX INFinite Use this command to specify the number of triggers the instrument will accept before returning to the idle state Select from 1 to 50 000 triggers Trigger count is ignored while in local operation Parameters lt n gt description 1 to 50 000 Select value for the number of triggers MINimum Select the minimum value MAXimum Select the maximum value INFinite Select INFinite to instruct the instrument to take triggers continuously Query command description TRIGger COUNt Query the number of triggers Returns 9 90000000E 37 when you select the infinite trigger count TRIGger COUNt MIN Query the minimum number of triggers TRIGger COUNt MAX Query the maximum number of triggers 5 68 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands TRiGger DELay lt Use this command to select a
228. t to enter coefficient values for RTD user defined sensor types R ZERO ALPHA BETA DELTA SPRTD R ZERO A4 B4 AK BK CK DK NTCT A By C UNITS 2110 901 01 Rev A July 2012 Refer to the documentation supplied by the manufacturer of the RTD for information about the coefficient values Select coefficient and enter values Then use and lt keys to select the digit Then use Aand to increase or decrease the number Select to configure the standard platinum RTD SPRTD sensor Refer to Temperature measurement on page 3 17 and RTD_ coefficients and temperature calculation on page 3 19 for details Use gt and lt keys to select the digit Then use Aand to increase or decrease the number NTCT is the supported thermistor type Refer to Temperature measurement on page 3 17 for details Use gt and lt keys to select the digit Then use Aand to increase or decrease the number Select UNITS to configure the temperature unit type 2 13 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual Keys menus and selection Description C F K Specify units for temperature measurement Cel means Celsius Far means Fahrenheit and K means Kelvin TRANSDUCER Select to Configure transducer Where FRTD 4 wire as the RTD measurement and RTD 2 wire as the RTD measurement SHIFT Press the SHIFT key to access the
229. tage 0 1 V 1 V 10 V 100 V and 1000 V AC voltage 0 1 V 1 V 10 V 100 V and 750 V DC current 10 mA 100 mA 1 A and 10 A AC current 1 A 3 A and 10 A Two and 4 wire resistance 100 Q 1 KQ 10 kO 100 KQ 1 MQ 10 MQ and 100 MQ Frequency 3 Hz to 300 kHz Capacitance measurement 1 nF 10 nF 100 nF 1 uF 10 uF 100 uF 1 mF 10 mF Temperature measurement using RTDs thermistors and thermocouples direct measurement using built in cold junction compensation to improve accuracy supports J R S T E N B C and K type thermocouples Period measurement Diode measurement Continuity measurement Programmable A D converter and filter settings for signal to noise optimization 2110 901 01 Rev A July 2012 1 3 Section 1 Introduction Model 2110 51 Digit Multimeter Reference Manual Mathematical operations The Model 2110 allows you to perform the following seven mathematical operations on measurement readings Percentage Average Min Max Count NULL Limits mX b dB and dBm testing Startup software and PC utilities The following start up software and PC utilities are included e KI Tool and KI Link software allow you to quickly control the instrument over GPIB if equipped or USB record measurements and display time series plots of the data KI Link is an add in for Microsoft Word and Microsoft Excel e LabVIEW and IVI drivers allow more advanced customers even more control over the instrument
230. te bits B3 B4 B5 and B7 of the Status Byte Register These summary bits do not latch and their states 0 or 1 are solely dependent on the summary messages 0 or 1 For example if the Standard Event Register is read its register will clear As a result its summary message will reset to 0 which will then reset the ESB bit in the Status Byte Register The bit definitions of the Status Byte Register are described in the following table Status Byte Register Bit Definition Decimal Description value 0 Not used 1 Set to 0 1 Not used 2 Set to 0 2 Error Available EAV 4 Set bit indicates that a measurement event has occurred 3 Questionable 8 One or more bits are set in the Questionable Data Register Summary Bit QSB indicating that an enabled questionable event has occurred bits have to be enabled in the enable register 4 Message Available 16 Set summary bit indicates that a response message is MAV present in the Output Buffer 5 Event Summary Bit 32 One or more bits are set in the Standard Event Register ESB indicating that an enabled standard event has occurred bits have to be enabled in the enable register 6 Request Service 64 Set bit indicates that an enabled summary bit of the Status RQS Byte Register is set and the instrument requires service Serial Poll 7 Not used 128 Set to 0 B 4 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual
231. te Enable Register 2110 901 01 Rev A July 2012 B 7 Appendix B Status model Model 2110 51 Digit Multimeter Reference Manual Status register sets There are two status register sets in the status structure of the instrument Standard Event Status and Questionable Event Status B 8 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix B Status model Standard Event Register The bit definition of the Standard Event Register is shown in the following table You will have to use the ESE command and the appropriate decimal value for each bit to set the enable register mask For example enable operation complete by using the ESE 1 command NOTE All errors in the error queue are recorded as an error condition including bits 2 3 4 or 5 of the Standard Event Register The only exception is if you read the error queue using the SYSTem ERRor command NOTE All reading overload conditions are reported to the Standard Event Register bit 3 from the Questionable Data Event Register bits 0 1 or 9 However no reading overload conditions are reported to the instrument s Error Queue Standard Event Register Bit Definition Decimal Description value 0 Operation Complete 1 Set bit indicates that all pending selected device operations are completed and the instrument is ready to accept new commands This bit only sets in response to the OPC query command See OPC
232. the Keithley I O Layer If you have an earlier version of the Keithley I O Layer software installed on your computer you must uninstall it To uninstall the Keithley I O layer 1 From the Control Panel select Add Remove Programs 2110 901 01 Rev A July 2012 C 15 Appendix C Communication interface Model 2110 5 Digit Multimeter Reference Manual 2 Uninstall the following components e Keithley I O Layer e Keithley I O Layer Suite e Keithley SCPI based Instrument IVI C Driver e NI VISA Run Time Engine x x x if present x x x is the VISA version 3 Reboot your computer How to install the Keithley I O Layer NOTE Before installing it is a good idea to check the Keithley Instruments website http www keithley com to see if a later version of the Keithley I O Layer is available On the website select the Support tab under model number type KIOL and select Software Driver You can install the Keithley I O Layer from the CD ROM that came with your instrument or from the download from the Keithley website The software installs the following components e Microsoft NET Framework 2 0 e Nv Compliance Package 3 3 e NI VISA Run Time Engine 4 5 0 e Keithley SCPI based Instrument IVI C driver SCPI 856C02 e Keithley I O Layer KIOL 850C02 To install the Keithley I O Layer from the CD ROM 1 Close all programs 2 Place the CD ROM into your CD ROM drive 3 Your web browser should start automatically and di
233. the maximum value Use the following commands to configure and control limit testing CALCulate FUNCtion LIMit Select the limits feature CALCulate LIMit LOWer lt n gt Set the lower limit CALCulate LIMit UPPer lt n gt Set the upper limit lt n gt see Note Set value 1 u resolution NOTE The limit value setting range depends on the selected function For example for DCV the limit value can be set from 1200 to 1200 CALCulate STATe lt b gt Enable or disable the null feature lt b gt 0 or OFF Disable the null feature 1 or ON Enable the null feature MX B This math function multiplies a scale factor M to the measured reading X and then adds an offset B The result of the calculation Y is displayed on the instrument Y MX B This math function is used to perform slope calculations on a series of measured readings You can enable this math function and set the values of the M and B from the front panel or by using remote operation These values are stored in volatile memory and are lost when the instrument is turned off 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 3 Basic DMM operation Front panel operation Perform the following steps to use the MX B function 1 Press the SHIFT and NULL MATH keys 2 Use the lt and gt keys to display MX B and press ENTER 3 Set the M and B values a Use the lt and gt keys to display SET M and
234. the same type Figure 35 Removing a broken fuse i see pe SS TE Sie Se reg ee WA SRR R 5 Push the voltage selector container back into the module If the power line fuse continues to blow a circuit malfunction exists and must be corrected Return the unit to Keithley Instruments for repair 2110 901 01 Rev A July 2012 Appendix A Maintenance Model 2110 5 Digit Multimeter Reference Manual Current input fuse replacement The Model 2110 uses two fuses to protect it from excessive input current 3 A 250 V 5 x 20 mm slow blow fuse 15 A 250 V 5 x 20 mm slow blow fuse A WARNING Disconnect the line cord at the rear panel and remove all test leads connected to the instrument before replacing a current input fuse Failure to do so could expose you to hazardous voltages that could result in personal injury or death A CAUTION For continued protection against fire or instrument damage only replace the current input fuses with the same type and rating If the instrument repeatedly blows fuses have the unit serviced at an authorized repair facility As shown in the following figure the current input fuses are located in the current input terminals Perform the following steps to replace a blown fuse 1 AUN Push in the fuse holder and turn it to the right until it releases Pull out the fuse holder to expose the current input fuse Remove the blown fuse and replace it with the sa
235. then reported to the Status Byte Query the Standard Event Enable Register The instrument returns a decimal value that corresponds to the binary weighted sum of all bits set in the register Query the Standard Event Status Register The instrument returns a decimal value that corresponds to the binary weighted sum of all bits set in the register IDN Identification query Returns the manufacturer model number serial number and firmware revision levels of the instrument OPC Operation complete command This command sets the OPC bit OPC Operation complete query Returns 1 to the output buffer after the command is executed PSC lt b gt Power on status clear Clear the Status Byte and Standard Event Register enable masks when power is turned on PSC 1 When PSC 0 is in effect the Status Byte and Standard Event Register enable masks are not cleared when power is turned on Stored in nonvolatile memory PSC Power on status clear query Query the power on status clear setting Returns 0 PSC 0 or 1 PSC 1 RST Reset command Reset the instrument to the power on configuration SRE lt NRf gt Service request enable command Enable bits in the Status Byte Enable Register SRE Service request enable query Query the Status Byte Enable Register STB Status byte query Query the Status Byte Summary Register TRG
236. these interfaces on computers with Microsoft Windows 2000 Windows XP Windows Vista and Windows 7 operating systems It also describes the I O software drivers and application software that can be used with Keithley s instruments Selecting an interface The Keithley Instruments Model 2110 supports the following remote interfaces e GPIB general purpose interface bus e USB The Model 2110 can only be controlled from one remote interface at a time The first interface that receives a message takes control of the instrument It will ignore the other interfaces until the instrument is taken back to local operation USB communications To use the rear panel USB connection you must have the Virtual Instrument Software Architecture VISA layer on the host computer See How to install the Keithley I O Layer on page C 16 for more information VISA contains a USB class driver for the USB Test and Measurement Class USBTMC protocol which once installed allows the Microsoft Windows operating system to recognize the instrument When a USB device that implements the USBTMC or USBTMC USB488 protocol is plugged into the computer the VISA driver automatically detects the device It is important to note that only USBTMC and USBTMC USB488 devices are automatically recognized by the VISA driver Other USB devices such as printers scanners and storage devices are not recognized In this section USB instruments refers to d
237. tion This section provides maintenance information and procedures that can be performed by the operator Line fuse replacement A fuse located on the Model 2110 rear panel protects the power line input of the instrument A WARNING Disconnect the line cord at the rear panel and remove all test leads connected to the instrument before replacing the line fuse Failure to do so could expose the operator to hazardous voltages that could result in personal injury or death The power line fuse is accessible from the rear panel adjacent to the AC power receptacle as shown in the following figure Appendix A Maintenance Model 2110 5 Digit Multimeter Reference Manual Figure 33 Plug in power switch Perform the following steps to replace the line fuse A WARNING To prevent injury death or instrument damage use only the correct fuse type A 2 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Appendix A Maintenance 1 Power off the instrument and remove the line cord The voltage selector container is located next to the AC receptacle A small tab is located on the 2 top of the container Using a thin bladed knife or a screwdriver pry this tab away from the AC receptacle Slide the voltage selector container out to gain access to the fuse as shown in the following figure Figure 34 Remove voltage selector 4 Snap the fuse out of voltage selector container and replace it with
238. tion 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual Details The CONFigure command offers a little more flexibility than the MEASure command The multimeter sets the parameters for the requested function range and resolution You have an option to change the configuration The CONFigure command does not initiate the measurement To initiate the measurement use INITiate or READ command When this command is sent the instrument will be configured as follows e The function specified by this command is selected e The range and resolution are selected as specified All other controls related to the selected function are defaulted to the RST values This command is automatically asserted when the MEASure command is sent Example CONF VOLT DC 10 0 001 Configure 1 mV resolution digits on the 10 VDC range CONF FREQ 1K Hz 0 1 Hz Configure 1000 Hz input 0 1 Hz resolution Also see INITiate on page 5 17 READ 1 2 on page 5 17 FETCh 1 2 on page 5 16 FETCh 1 2 The FETCh command transfers readings to the instrument s output buffer The INITlate command is used to store readings in the instrument s internal memory Parameters 1 1 stands for the specified function which will act on the primary display 2 2 stands for the 2ND specified function which will act on the secondary display Details The FETCh and INITiate commands provide the lowest level of control for measurement
239. tor Indicates ADR Instrument is controlled via the GPIB Interface RMT Remote interface operation via the USB Interface MAN Manual range mode is selected TRIG Single triggering is enabled HOLD Reading hold function is enabled MEM Internal memory is in use MATH MATH operation is enabled FILT The digital filter is enabled SHIFT The SHIFT key was just pressed ERR An error occurred RAT RATIO operation is taken gt Diode testing operation was initiated 4w 4 wire mode is selected for resistance measurement Continuity testing is enabled OFF Front panel display is turned off 2nd Second function is in use 2110 901 01 Rev A July 2012 Section 2 General overview Model 2110 5 Digit Multimeter Reference Manual 2 The Power key Power switch The in position turns the instrument ON the out position turns it OFF Figure 11 Power switch On Off 2 8 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 2 General overview 3 The function and operation keys The front panel has keys that allow you to select various functions and operations Function The function keys are white Pressing a function key causes the instrument to perform a specific function For example pressing the DCV function key selects the DC voltage function Operation The operation keys are gray Pressing an operation key causes the instrument to perform a specific operation For example
240. triggering and reading retrieval but offer the most flexibility After you have configured the instrument use INITiate command to change the state of the triggering system from the idle state to the wait for trigger state The instrument will start the measurements when the specified trigger condition requirements are met after it receives the INITiate command The results are sent to the internal memory and stored until you are ready to read them The FETCh command sends the data in the instrument s internal memory to the output buffer where you can read it into your bus controller The FETCh command does not affect the instrument setup The FETCh command does not trigger measure operations it simply requests the last available readings Note that this command can repeatedly return the same readings Until there are new readings this command continues to return the old readings Example INIT Change state of triggering system to wait for trigger state FETCh Sends the data in the instrument s internal memory to the output buffer Also see INITiate on page 5 17 DATA POINts on page 5 66 5 16 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 5 Remote commands INITiate Change the state of the triggering system from the idle state to wait for trigger state The meter will start to make measurements when a required triggering condition is met after t
241. tustesvvecut ncezs sxncicezsa dee ezasusceseutreceethausteees ss eeeeusiaiereet races 2 6 1 DiS Plays iriso i n a aO Aa a Gis eaath a ame ae 2 6 2 Thies Power Key scisisccssivactatciiscensenes A R E nema 2 8 3 The functionand operation KOy Si sciscseesccaseteecasendesctaczaetanceecetenelas ao taiao eaii iienaa in 2 9 4 BANGE and scroll KEYS lt o sici sefyen secacdendianetyeeaeccrgugdcategentecoedoesnteevecheceejestacenvesacsensapaisebsneioas 2 11 SITC MAU sine tica tsececsscadavedaantivnes E E EE REREN iT 2 11 6 Terminals And TUSeS Ariasen aa n aaa a a a 2 11 ZMENU OVE VIO W cesena ES EES ENESE EE tie 2 11 Mainmme nsaisan eiaa aaa aa a a E a a a aai 2 12 Roar DANG OvoVio W persana N 2 17 1 Voltmeter complete output terminal VM COMP sssesssesesesessreereesnereneserernreennsresnreeennenn 2 18 2 External triggering input terminal EXT TRIG srrseiemoo mno 2 18 3 USB COMMECHOM eisini ticki ies see a cece RE lett eae i lee ee 2 18 4 Protective earth safety QrOUNG sciciisecessecvecesesscccanseqeccesasceciadiacvelas icceerapiacdelaasteneeaasbeben ieee 2 18 5 AC line receptacle power line fuse and line voltage Setting cceeeeeeeeeeeeeeteneeeeneeee 2 18 Gy internace DON scsie38 5 242 esee ces se ta stezes icadec edceetaesnesergusdeesiyeenscchaee deeobsesucedeesdewopveunrcerceedimebwecnouis 2 19 Real Panel COMMACIOMCOSTAIIS arc niacccesmtereceatuacaes meseens i E E EA 2 19 Sy tem Operaio AS sscicis
242. uence to obtain the Model 2110 serial poll byte The serial poll byte contains important information about internal functions see Status model on page B 1 Generally the serial polling sequence is used by the controller to determine which of several instruments has requested service with the SRQ line The serial polling sequence may be performed at any time to obtain the status byte from the Model 2110 GPIB status indicators The ADR status indicator shows that the instrument is controlled via the GPIB Interface Configure the GPIB controllers Each instrument on a GPIB bus needs a unique address from a range of 0 to 30 Generally the GPIB host controller is on address 0 However there are GPIB controllers that adopt the address of 21 To be safe do not configure any of the instruments for 21 or 0 If you do need to change the host controller address consult the controller documentation For the KPCI 488LPA and KUSB 488B GPIB controller from Keithley Instruments the configuration utility is called the KI 488 Diagnostic Tool It is available from the Microsoft Windows Start menu at Keithley Instruments gt KI 488 gt KI 488 Diagnostic Tool 2110 901 01 Rev A July 2012 C 11 Appendix C Communication interface Model 2110 51 Digit Multimeter Reference Manual For the KUSB 488A GPIB controller from Keithley Instruments the configuration utility is called GPIB Configuration It is available from the Windows Start Menu at Keithley
243. uery command description SENSe TEMPerature SPRID AX Query the sensor AX coefficient SENSe TEMPerature SPRID AX MIN Query the minimum sensor AX coefficient SENSe TEMPerature SPRID AX MAX Query the maximum sensor AX coefficient Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about the AX coefficient RTD coefficients and temperature calculation on page 3 19 SENSe TEMPerature SPRTD BX lt n gt MIN MAX Use this command to set the BX coefficient for the SPRTD sensor Parameters lt n gt description value Select the BX coefficient for the SPRTD sensor MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TEMPerature SPRID AX Query the sensor BX coefficient SENSe TEMPerature SPRID AxX MIN Query the minimum sensor BX coefficient SENSe TEMPerature SPRID AX MAX Query the maximum sensor BX coefficient Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about the BX coefficient RTD coefficients and temperature calculation on page 3 19 2110 901 01 Rev A July 2012 5 59 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe TEMPerature SPRTD CX lt n gt MIN MAX Use this command to set the CX coefficient for the SPRTD sensor
244. umentation explains hazards that could damage the instrument Such damage may invalidate the warranty Instrumentation and accessories shall not be connected to humans Before performing any maintenance disconnect the line cord and all test cables To maintain protection from electric shock and fire replacement components in mains circuits including the power transformer test leads and input jacks must be purchased from Keithley Instruments Standard fuses with applicable national safety approvals may be used if the rating and type are the same Other components that are not safety related may be purchased from other suppliers as long as they are equivalent to the original component note that selected parts should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product If you are unsure about the applicability of a replacement component call a Keithley Instruments office for information To clean an instrument use a damp cloth or mild water based cleaner Clean the exterior of the instrument only Do not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument Products that consist of a circuit board with no case or chassis e g a data acquisition board for installation into a computer should never require cleaning if handled according to instructions If the board becomes contaminated and operation is affected the board should be returned to the factor
245. urements on page 3 22 for more information about sensor type SENSe TCOuple RJUNction SiMulated lt n gt MIN MAX Use this command to select the default temperature of the simulated reference junction Parameters lt n gt description 100 to 100 Select the default temperature value in degrees Celsius MINimum Select the minimum value MAXimum Select the maximum value Query command description SENSe TCOuple RJUNction SIMulated Query the default temperature of the simulated reference junction Details Refer to the following topic in the Temperature measurement on page 3 17 section for more information about sensor type Thermocouple measurements on page 3 22 2110 901 01 Rev A July 2012 5 53 Section 5 Remote commands Model 2110 5 Digit Multimeter Reference Manual SENSe TCOuple TYPE lt name gt Use this command to select thermocouple sensor type Parameters lt name gt description B Thermocouple type B C Thermocouple type C E Thermocouple type E J Thermocouple type J K Thermocouple type K N Thermocouple type N R Thermocouple type R S Thermocouple type S T Thermocouple type T Query command description SENSe TCOuple TYPE Query thermocouple sensor type Returns type parameter Details Refer to Thermocouple measurements on page 3 22 for information about thermocouple types Example TCOuple TYPE J Select type J Also see SENSe JUNIT lt name gt on p
246. us Byte Register This register can be read by the user s test program to determine if a service request SRQ has occurred and what event caused it Status byte and SRQ The Status Byte Register receives the summary bits of the status register sets queue and buffer The registers monitor the various instrument events When an enabled event occurs it sets a summary bit in the Status Byte Register When a summary bit of the Status Byte and its corresponding enable bit are set as programmed by the user the Request Service RQS bit will set to indicate that a service request SRQ has occurred Status register sets A typical status register set is made up of an event register and an event enable register The event enable register e Accepts both read and write operations e Indicates bits in the corresponding event register that are ORed together to produce the summary bit of the event register When an event occurs the appropriate event register bit sets to 1 The bit remains latched to 1 until the register is reset When an event register bit and its corresponding enable bit are set as programmed by the user the output Summary of the register will set to 1 which then sets the summary bit of the Status Byte Register Appendix B Status model Model 2110 51 Digit Multimeter Reference Manual Error Queue and Output Buffer The instrument uses an Output Buffer and an Error Queue The response messages to query commands are place
247. use the lt n gt parameter can use the MINimum and MAXimum name parameters MIN selects the minimum value and MAX selects the maximum value Use the following commands to select the function DCV or ACV set a measure range set resolution and perform a measurement FUNCtion VOLTage DC Select DCV function FUNCtion VOLTage AC Select ACV function VOLTage DC RANGe lt n gt Set DCV range VOLTage AC RANGe lt n gt Set ACV range lt n gt 1000 to 1000 Specify expected DCV reading 0 to 750 Specify expected ACV reading VOLTage DC RANGe AUTO lt b gt Enable or disable autorange for DCV VOLTage AC RANGe AUTO lt b gt Enable or disable autorange for ACV lt b gt 0or OFF Disable autorange 1 or ON Enable autorange READ Perform measurement and acquire reading Measurement configuration commands can also be used to perform measurements Use the following commands to select a function DCV or ACV set the measure range set measurement resolution perform a measurement and acquire the reading MEASure VOLTage DC lt range gt lt resolution gt MEASure VOLTage AC lt range gt lt resolution gt lt range gt 1000 to 1000 Expected DCV reading 0 to 750 Expected ACV reading lt resolution gt see Note Measurement resolution NOTE The resolution setting range for lt resolution gt depends on the selected function and range The maximum value for DC measurement is 3 00e 04 x full scale range and the
248. uses the instrument to set the Operation Complete Bit OPC B6 after all pending operations are complete The OPC operation complete query places an ASCII 1 in Output Buffer after all pending instrument operations are complete Typically either one of these commands is sent after the INITiate command The INITiate command is used to take the instrument out of idle in order to perform measurements e After the instrument completes all programmed commands the instrument returns to the idle state Then the instrument completes all pending commands including e OPC command Completing this command sets the OPC bit e OPC command Completing this command places an ASCII 1 in Output Buffer If there are too many messages in the Output Buffer before the OPC command is sent the buffer cannot accept any additional messages and the instrument will stop taking readings Questionable Data Register The Questionable Data Register indicates when measurements result in any of the following conditions by setting the appropriate bit e Voltage range overload e Current range overload e Out of limit conditions e Ohms overload All of the set bits are summarized to the Questionable Summary Bit QSB B3 A set summary bit indicates that an enabled questionable event has occurred The bits of the Questionable Data Register are described in the following table Use the STATus QUESTionable ENABle command to set the contents of the Event
249. vide this termination The following example shows how a multiple command program message must be terminated tres ols lt M Ss 5 12 2110 901 01 Rev A July 2012 Model 2110 51 Digit Multimeter Reference Manual Section 5 Remote commands Command execution rules Command execution rules are as follows e Commands execute in the order that they are presented in the program message e Aninvalid command generates an error and is not executed e Valid commands that precede an invalid command in a multiple command program message are executed e Valid commands that follow an invalid command in a multiple command program message are ignored Output Data Type The instrument provides the following types of output data e Non reading queries e Single reading IEEE 488 2 e Multiple readings IEEE 488 2 e Single reading USB e Multiple readings USB Format Output data will be in one of the following formats lt 80 ASCII character string SD DDDDDDDDESDDenl gt SD DDDDDDDDESDD lt nl gt SD DDDDDDDDESDD lt cr gt lt nl gt SD DDDDDDDDESDD lt cr gt lt nl gt S Negative sign or positive sign D Numeric digits E Exponent lt nl gt newline character lt cr gt carriage return character 2110 901 01 Rev A July 2012 5 13 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual SCPI signal oriented measurement commands The signal oriented measurement commands con
250. want to use the compatible language use the gt and lt keys to display COMPATIBLE and then press the ENTER key 6 When finished press ESC Viewing errors in the error queue When the ERR indicator on the display is lit it indicates that the instrument has detected an error condition In general the ERR indicator and error queue operate as follows e The instrument turns the ERR indicator off after you view the error queue e If there are no error messages in the error queue when you view the queue the display shows NO ERRORS e If there are more than 20 errors found the last error in the error queue will be replaced with the error 350 The 350 error indicates too many errors The instrument clears the error queue when the instrument is turned off or when the following command is received ENS For more information about error conditions refer to Error codes on page 6 3 To view messages in the error queue perform the following steps 1 Press the SHIFT and CONFIG MENU keys to display the MENU options 2 Use the gt and lt keys to display SYSTEM and then press the ENTER key 3 Use the and lt keys to display SCPI ERR and then press the ENTER key The display shows e ERROR CODE Refer to Error codes on page 6 3 for information e NO ERRORS Indicates that there are no error messages in the queue 2110 901 01 Rev A July 2012 2 23 Section 2 General overview Model 2110 5 Digit
251. www keithley com Model 2110 5 2 Digit Multimeter Reference Manual 2110 901 01 Rev B July 2012 KEITHLEY Model 2110 512 Digit Multimeter Reference Manual 2008 2012 Keithley Instruments Inc Cleveland Ohio U S A All rights reserved Any unauthorized reproduction photocopy or use the information herein in whole or in part without the prior written approval of Keithley Instruments Inc is strictly prohibited All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments Inc Other brand names are trademarks or registered trademarks of their respective holders Document number 2110 901 01 Rev A July 2012 KEITHLEY Safety Precautions The following safety precautions should be observed before using this product and any associated instrumentation Although some instruments and accessories would normally be used with nonhazardous voltages there are situations where hazardous conditions may be present This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury Read and follow all installation operation and maintenance information carefully before using the product Refer to the user documentation for complete product specifications If the product is used in a manner not specified the protection provided by the product warranty may be impaired The types of p
252. y DISPlay TEXT CLEar Clear the message shown on the front panel display DISPlay Query the display setting Returns 0 off or 1 on INPUt subsystem summary Command Description IMPedance AUTO lt b gt Specify auto impedance Where 0 off and 1 on AUTO Query impedance state Returns 0 off or 1 on 2110 901 01 Rev A July 2012 5 21 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual SENSe subsystem summary See the following table for the SENSe command summary Refer to Power on settings on page 1 6 for information about default values for SENSe commands Command Description SENSe Path to sense commands FUNCtion 1 2 Path to FUNCtion FUNCtion1 and FUNCtion2 FUNCtion1 displays the selected function on the primary display FUNCtion2 displays the selected function on the secondary display lt a gt Specify one of the following functions to measure enclosed function in quotation marks VOLTage AC VOLTage DC VOLTage DC RATio CURRent AC CURReni DC FREQuency VOLT FREQuency CURR FRESistance PERiod VOLT PERiod CURR RESistance DIODe TCOuple TEMPerature CONTinuity Note DlIODe and CONTinuity are not SCPI compliant parameters FUNCtion Query function Returns function name VOLTage DC Path to configure DC voltage RANGe lt n gt MIN MAX Specify the range 100 mV 1 V 10 V 1
253. y 20 Hz AC digits 5 5 Range 1A DC current DC digits 5 5 1 PLC Range 1A Frequency and period Digits 5 5 Range 10 V Gate time 0 1s Capacitance Digits 4 5 Range 10 nF Diode test Digits 5 5 Range 1mA Rate 0 2 PLC Resistance Digits 5 5 1 PLC Range 1 kQ Temperature Digits 4 5 1 PLC Thermocouple K type Triggers Source Immediate Delay Auto Input resistance 10 MQ 2110 901 01 Rev A July 2012 Model 2110 5 Digit Multimeter Reference Manual Section 1 Introduction General specifications Input bias current lt 30pA at 25 C Input protection 1000V all ranges 2W input Digital I O interface USB compatible type B connection GPIB optional Environment For indoor use only Operating temperature 0 C to 40 C Operating humidity Maximum relative humidity 80 for temperature up to 31 C Storage temperature 40 C to 70 C Operating altitude Up to 2000 m above sea level 107 mm high x 252 8 mm wide x 305 mm deep 3 49 in x 9 95 in x 12 00 in Bench dimensions with handles and bumpers Weak RB Safety Conforms to European Union Low Voltage Directive UL 61010 1 EMC Conforms to European Union EMC Directive 2110 901 01 Rev A July 2012 1 7 Section 2 General overview In this section Turning your instrument on and Off ccesesseeeeseteeeeesteeeeees 2 1 FRONT panel OVEIVIOW i scieiazsseccciessiestainsersvedievinemeuruetedianans 2 6 Rear panel Overview sinasin intaccare Maen 2 17
254. y for proper cleaning servicing 11 07 Table of Contents PPE UG LO i isicsnieinrartiainiguniajicasbiajenasniarenisbiaveiaueiaraasubsustaieiauaiabntameiapneimiapebaseisieauniaIe 1 1 WV OCONEE rara a aid cra saetaceeueacn ete uiduceebebanceea Devaccons aan cram R 1 1 Contact IMOMMAUON ranean a 1 1 CD ROM COMENS tscchenis eterna niente in eco nee eee 1 2 Organization or manual SSCuOnS arsicticicensenie niente eet eied ieee 1 2 Gapabilites and TO aus aes ciesszccce scot vecaesatcecdenas tenet E E 1 3 Measurement ranges and functions ccceeeeceeeeseeeeeeseeceeeeeeeeneeeeeeseseaeeneeeeeeseseeeeseseeeenenes 1 3 MathematicaloperalioNS ic secaciccveiesceussctse cacysates E E odeiapsosseaemateaaese 1 4 Starup software and PC UlllitieS serinin sonaia Mette iets eerie 1 4 Standard ACCESSOMES niac e hndaneine 1 4 Doone ee e e A a T A E T E rrr 1 4 Gen ral Mormaii sa ninia a o aaa aie aa aaa E ia EEN 1 5 Displaying the instrument s Serial NUMDET ceceeesecceeseseeeeeeeeeeeeeseneeeeeseeeeseseeeeneseneeeesscees 1 5 Dimensions esera ia vanyieadeccansassegya ska ddciay iueaeyasunceiaas E A bxeegsnrinceed 1 5 Poweron S QUIN GS erran a E E Ietedseacingvads mnecocstatucenobaedaey 1 6 General SOECHICATIONS pinarinan a 1 7 General OVErVIEW sissies ees n estates cede arr aeai AEE rrai aeaiia 2 1 Tumming your imstrument on and Off jaccetcccacaelsrstar a 2 1 PHOGGCUING sinar Ar E AA E A ON 2 1 FOM panl OVVIO W i sccetes vaateness tecc
255. y the CX coefficient value CX IN MAX Query the CX coefficient DX lt n gt MIN MAX Specify the DX coefficient value DX IN MAX Query the DX coefficient TRANsducer lt name gt Configure transducer Where FRTD 4 wire as the RTD measurement and RTD 2 wire as the RTD measurement DETector Path to configure detector BANDwidth lt n gt MIN MAX Specify bandwidth range 3 20 200 BANDwidth MIN MAX Query bandwidth range ZERO Path to configure auto zero AUTO lt name gt Specify auto zero configuration OFF ONCE or ON AUTO Query auto zero Returns 0 off or 1 on ONCE returns 0 off AVERage Path to configure average TCONtrol lt name gt Specify MOVing or REPeat TCONt rol Query average type COUNt lt n gt MIN MAX Specify count value COUNt MIN MAX Query count STATe lt b gt Specify ON or OFF STATe Query state Returns 0 off or 1 on 2110 901 01 Rev A July 2012 5 25 Section 5 Remote commands Model 2110 51 Digit Multimeter Reference Manual STATus subsystem summary See the following table for the STATus command summary Refer to the following topics for additional information on status commands e Common commands on page 5 4 e Status model on page B 1 Command Description STATus QUEStionable Path to configure the Questionable Data Enable Register ENABle lt NRf gt Enable bits in the Questionable Data Enable Register The selected bits

Keithley DMM - Instrumentation LAB

Contents

Download Pdf Manuals

Related Search

Related Contents