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DM 5110 Programmable Digital Multimeter DM - NSCA TRA-CAL

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1. 2 7 Secondary Functions sss senenn 2 10 Summary of Keyboard Functions 2 13 Basic Measurements ccccsssssssscsesseaees 2 15 Display Error Reporting 2 21 Section3 PROGRAMMING Taise 8 os ile ERIT TT 3 1 IEEE 488 1 bus Address and Terminator 3 1 Message and Communication Protocol 3 2 Remote Local Operation 3 7 Device Dependent Command Set 3 8 Detaled Command List 3 11 Instruction Manual DM 5110 DM 511 Page Calibration Command List 9 29 Power On Initial Conditions 3 30 Status and Error Reporting 3 30 Detailed Error Listing iei ULLA 3 33 Section 4 MAINTENANCE Introduction OE 4 1 Recalibration Adjustment 4 1 Internal Fuse Replacement 4 1 Cleaning instructions eere 4 1 Section 5 OPTIONS AND ACCESSORIES Option 08 oio da o ai de era iat ieu ied 5 1 Standard Accessories 0 5 1 Optional Accessories eere 5 1 DM 5110 DM 511 Fig Page 2 1 Front Panel controls connectors and indicators ss sese esse se sese eee 2 3 3 1 ASCII and IEEE GPIB Code
2. Returns the position of the Input Switch Type Query Query Syntax SOURce Query Response SOURCE FRONT REAR Discussion The SOURCE query returns the position of the input switch instruction Manual B 4 s gt i M E A E ean z g x S tow s El Type TEMP number Temperature Function Setting Setting Syntax TEMP lt number gt Discussion This command will set the instrument to the tem perature function If the argument is above the maximum of the tem perature range the instrument generates an execu tion error and asserts SRQ if RQS is on number lt NRF gt valid temperature to the instru ment Range 62 Cto 240 C Instruction Manual Query Syntax Programming DM 5110 TEST Type Query TEST Query Response TEST problem number Discussion The TEST query command is used to cause a self test to occur and report the results The problem number can be either O if no error have occurred or 302 if the test has failed Programming DM 5110 USERreq ON OFf Type Setting or query Setting Syntax USERreq ON OFf Query Syntax USERreq Query Response USER ON OFF Discussion This command enables or disables the INST ID button service request _ If enabled the instrument asserts SRQ when the INST ID button is pressed 3 28 Instruction Manual y
3. It is recommended that in cleaning the interior that the accumulated dust be first blown off with dry low pressure air then use a soft brush to remove any remaining dust This instrument contains electrical components that Interior are susceptible to damage from static discharge Discharge the static voltage from your body by wearing an approved wrist strap and pad connection while cleaning the interior of the instrument I i R i Section5 Options Accessories DM 5110 DM 511 OPTIONS AND ACCESSORIES OPTION 02 OPTION 02 adds a TEKTRONIX P6602 that has been calibrated with the instrument Information concerning the TEKTRONIX P6602 Temperature Probe can be found in the instruction manual for that accessory or contact your local Tektronix Service Center or representative Standard Accessories 1 DM 5110 511 Operators Manual eee 070 7478 xx EE 1 Pair of Test Leads 196 3212 xx 1 GPIB Reference Guide DM5110 only S 070 7559 xx 1 Instrument Interface Guide DM5110 only 070 7560 xx Optional Accessories Temperature Prob ei iss ee rre UE sere etas eo v eus P6602 Tektronix RE POD m P6420 Tektronix High Voltage Probe caccsssssssssesseeee MEN 010 0277 xx Service Manual scsssssssscsesssssssccsseececceseessssscsssnsesssssssssssnsveee 070 7479 xx instruct
4. RQS ON If extra formatting characters SP CR and LF the LF cannot be used for format in the LF EOI terminator mode are added between the header delimiter and the argument they are ignored by the instrument Example 1 RQS ON Example 2 RAS ON Example 3 RQS e sr s ON Example 3 works only if the GPIB terminator is set to EOI only If set to EOI LF then the LF will be treated as the end of the message and a command error will be returned Missing argument In general these formatting characters are ignored after any delimiter and at the beginning and end of a message sp ROS gp ON jon LF ae USER OFF In the command list some headers and arguments are listed in two forms a full length version and an abbreviated version The instrument accepts any header or argument containing at least the characters listed in the short form any character added to the abbreviated ver sion must be those given in the full length version For documentation of programs the user may add alpha characters to the full length version Alpha characters may also be added to a query header provided the question mark is at the end USER USERE USEREQ USEREQUEST Multiple arguments are separated by comma 2 9 S NOTE In the last example the space is treated as a format character because it follows the comma the argu ment delimiter Instruction Manual Programming DM 5110 Number Formats The ins
5. E d g A E m x Operating instructions DM 5110 DM 511 Summary of Keyboard Functions The following keyboard sequences start from the normal RUN measuring mode Table 2 1 Summary of Keyboard Functions Function Sequence of keys to be pressed Basic measurement functions Resistance s o DC Voltage DCV AC Voltage ACV AC Voltage dBm dBm AC Voltage dBV dB V DC Current DCA AC Current ACA Temperature HOLD TEMP Autoranging OFF UP or DOWN More sensitive range DOWN Higher range I UP Autoranging ON E UP 1 and DOWN simultaneously Stop measuring 7 HOLD Make one measurement HOLD TRIG Instruction Manual eA A V e Operating Instructions DM 5110 DM 511 Summary of keyboard functions Cont Table 2 1 Cont Function Sequence of keys to be pressed l e Set linefreq to 50Hz Set linefreg to 60Hz Select 3 5 digit mode Select 4 5 digit mode NULL mode ON NULL mode OFF Set LOLIMIT Set HILIMIT COMPARE mode ON COMPARE mode OFF BEEPER mode ON BEEPER mode OFF GPIB Service Request Select GPIB address Select GPIB EOI only setting Select GPIB LF EOI setting rr ere ah re ert lw Bere y DMM setting functions HOLD B0 60Hz UP or DOWN RUN HOLD 50 60Hz UP or DOWN RUN HOLD 3 5 4 5 UP or DOWN RUN HOLD 3 5 4 5 UP or DOWN RUN NULL NULL or any Function Key
6. Programmable DM 5110 Digital Multimeter DM 511 Digital Multimeter Operators INSTRUCTION MANUAL E Tektronix Inc P O Box 500 Beaverton Oregon 97077 U S A Product Group 76 Tektronix Part No 070 7478 00 Tektronbpc COMMITTED TO EXCELLENCE PLEASE CHECK FOR CHANGE INFORMATION AT THE REAR OF THIS MANUAL Programmable DM 5110 Digital Multimeter DM 511 Digital Multimeter Operators Instruction Manual Serial Number wr ra i ann rere r First Printing May 1989 Revised July 1989 e U E 9 Copyright Tektronix Inc 1989 All rights reserved Contents of this publication may not be reproduced in any form without the written permission of Tektronix Inc Printed in U S A Specification and price changes are reserved Tektronix products are covered by U S and foreign patents issued and pending TEKTRONIX TEK SCOPE MOBILE and WW are registered trademarks TELEQUIPMENT is a registered trade mark of Tektronix U K Limited IBM is a registered trademark of International Business Ma chines Corporation INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a panel insert tag or stamped on the chassis The first number or letter designates the country of manufacture The last five digits of the serial number are assigned sequentially and are unique to each instrument Those manufactured in the United States have six unique digi
7. in the REAR position of the switch the mA jack is disconnected from the instrument but the diode bridge clamping circuitry in series with the fuse remains connected between the frontpanel LOW and mA jacks This prevents that pushing the FRONT REAR switch opens a circuit in which a current measurement is taken The switch can not be con trolled by the GPIB bus A query in the IEEE 488 1 instruction set is provided to read the status of the FRONT REAR switch Most function and range settings of the DM5110 can be done by single key operations PRIMARY FUNCTIONS These functions are indicated by a large black texture above the keys By selecting the HOLD mode another set of func tions becomes available to the operator SECON DARY FUNCTIONS These functions are indicated by text beside the keys PRIMARY LEVEL FUNCTIONS From the RUN mode the following functions can be selected by hitting just one key MEASUREMENT FUNCTIONS Function Key sequence Display DCV DCV mV or V DCA DCA pA or mA ACV ACV and mV or V ACA ACA and pA or mA OHMS Q Q kQ or MQ dBV dBV dBV and dBm dBm dBm and In all the functions a measurement can be done in the manual or the autoranging mode In the display the autoranging mode will be indi cated by the AUTO led The first time an UP or DOWN key is hit in the autoranging mode the DM will remain in the current range but the autoranging
8. peak to peak 5 Hz to 55 Hz 75 minutes lt Refer to TM500 DM511 or TM 5000 DM5110 power module specifications gt Meets or exceeds MIL T 28800D class 3 when installed in power module Instruction Manual 1 13 Specification DM 5110 DM 511 BA a Characteristics SHOCK Shock 30 g s 1 2 sine 11 ms duration 3 shocks in each direction along 3 major axes 18 total shocks Bench Handling Without power module 12 drops from 45 degr 4 or TRANSPORTATION Transportation EMC System performance subject to exceptions of power module and or other plug ins ELECTRICAL DISCHARGE Electrical Discharge Operating Maximum Test Voltage equilibrium whichever occurs first Supplemental information Meets or exceeds MIL T 28800D Meets or exceeds MIL T 28800D Qualified under National Safe Transit Association Preshipment Test Procedures 1A B 1 and 1A B 2 Within limits of F C C Regulations Part 15 Subpart J Class A VDC 0871 category B and MIL 461B 1980 for REO1 REO2 CE01 CEO3 RS01 RS03 C801 CS02 and CS06 30 Hz 1 GHz No MIL T 28800 equivalent Operating 20 kV 150 pF through 150 Q Charge applied to each protruding area of the front panel except the input connectors 1 14 Instruction Manual E gt S EE d R lt k S lt EC i Eu 4 P nad B i
9. 150 C 7 C from 150 C to 240 C Specification DM 5110 DM 511 Table 1 2 Cont Characteristics Performance Requirements Supplemental Information MECHANICAL Net Weight i DM5110 2 45 lbs 1 4 kg DM511 2 2 lbs 1 0 kg Size 2 63 in 66 8 mm Wx l 11 240 in 285 3 mm D x 4 961 in 125 9 mm H MISCELLANEOUS Power Consumption Less than 10 watt Reading Rate 4 5 digit NORMAL gt 3 times per second 3 5 digit FAST 25 times per second except 20M Ohm range 10 times per second Over range Indication blinking display 30 minutes 60 minutes after storage in high humidity environment Warm up Time 1 12 Instruction Manual B e S gt E i 2 E ke L x n P m f I 4 A E m Specification DM 5110 DM 511 ENVIRONMENTAL CHARACTERISTICS Table 1 3 Environmental Characteristics With power module Characteristics Supplemental information TEMPERATURE Operating 3 0 sC to 50 C Meets or exceeds MIL T 28800D class 5 with exceptions Non Operating 55 C1t0 75 C HUMIDITY Humidity lt 95 RH 0 to 30 C Meets or exceeds S 75 RH 30 C to 40 C MIL T 28800D class 5 lt 45 RH above 40 C non condensing ALTITUDE Operating 4 6 km 15 000 ft Meets or exceeds MIL T 28800D class 3 Non Operating 7 15 km 50 000 ft VIBRATION Vibration 0 64 mm 0 025
10. 500 counts 20 kHz to 50 kHz 1 396 of reading 0 07596 of F S Input 22000 counts 500V range 20 Hz to 100 Hz t 1 1 of reading 0 075 of F S Input 50 counts 100 Hz to 20 kHz 0 6 of reading 0 075 of F S Input 50 counts 10 kHz to 20 kHz t 0 9 of reading 0 07596 of F S Input 250 counts 20 kHz to 50 kHz 1 396 of reading 0 07596 of F S Input 500 counts Instruction Manual Specification DM 5110 DM 511 Table 1 2 Cont Characteristics Performance Requirements Common Mode Rejection Ratio 2 60 dB at 50 or 60 Hz Maximum Resolution Maximum Input Voltage Front panel inputs VOLTS Q TEMP to LOW VOLTS Q TEMP to GND LOW to GND Rear interface Conn Pin 28B Hi to pin 28A Lo Pin 28B Hi or pin 28A Lo to Chassis Crest Factor Supplemental information With a 1 kQ unbalance 10 pV 0 3 sec to 196 of step 500 Vrms or 600 V DC 1000 V peak 1000 V peak 60 V DC plus pk AC 60 V DC plus pk AC 3 1 for 0 1 add error Instruction Manual i Ead 9 27 we S e s Pd MA PE g Specification DM 5110 DM 511 Table 1 2 Cont Characteristics Supplemental Information DECIBELS AC coupled True RMS 4 5 digit front and rear panel inputs For specifications of the 3 5 digit mode add 1 display count Accuracy for dBV dBm 00 00 dBm 1 mWatt in a
11. Discussion number lt NRF gt valid voltage input to the instru ment This command will set the instrument to the AC voltage function Also sets the range of the AC voltage function The argument is used to determine the range If there is no argument the range is set to au torange starting in the highest range If the argument is valid the instrument rounds the argument up to the first full scale value and selects that specific range If the argument is above the highest range the in strument generates an execution error and asserts SRQ if RQS is on Ranges 200 mV 2 V 20 V 200 V 500 V Programming DM 5110 BEEper Type Setting or Query Setting Syntax BEEper ON OFf Query Syntax BEEper Query Response BEEP ON OFF Discussion This BEEper ON OFF command enables or dis ables the BEEPER mode The beeper mode works on all functions and makes the beeper sound if the reading is below the low limit or above the high limit with an exception when the instrument is in the Ohms mode in overrange and the HI LIMIT is set at 19999 in the measurement range CALC Compare Mode Type Setting or Query Setting Syntax CALC COMp OFf CALC CMPr OFf Query Syntax CALC Query Response CALC CMPR OFF CALC CMPR CALC OFF CALC COMP Examples Discussion With the CALC CMPR command the instrument will display HI if the reading is higher than the H
12. Request Service Type Setting or Query Type Output Setting Syntax RQS ON OFf Syntax SENd Query Syntax RQS Discussion The instrument triggers a measurement and then Query Response RQS ON OFF outputs it If the COMPARE calculation is enabled CALC CMPR the instrument outputs one of the following Discussion numbers which indicate the relationship between the input and the limits set by the LIMITS This command enables the instrument to generate command any service requests 3 if the input is above both limits The OFF argument disables all service requests 2 if the input is between or equal to one of See Status and Error Reporting in this section for the limits further information 1 if the input is below both limits S 1 E 99 or 1 E 99 if over ranged If the period waiting for the new reading is longer than the timeout of the DM5110 5 sec the DM5110 will send the talked with nothing to say response FF byte Instruction Manual 3 25 Programming DM 5110 SET Function toSet all Commands in a String Type Query Query Syntax SET Discussion The SET query will return the response to all settable commands in one string The format is FUNC RANGE LIMITS lt CALC gt lt NULL gt lt DIGIT gt lt MODE gt lt BEEPER gt lt DT gt lt MONITOR gt lt OPC gt OVER gt USER RQS SOURce
13. V E T 1 Section 2 Operating Instructions DM 5110 DM 511 OPERATING INSTRUCTIONS Introduction This section provides installation and operating in structions for the DM 5110 511 and describes the functions of the front panel controls and connectors The information in this section assumes the instrument is not connected to the GPIB Complete information for programming the DM 5110 via the GPIB General Purpose Interface Bus is in the Programming section of this manual see section 3 Installation and Removal NOTE The DM 5110 is designed to operate in aTM 5000 series power module The DM 511 is designed to operate in a TM 500 series module and also in a TM 5000 series power module The DM 5110 DM511 are calibrated and ready for use when received It operates in one compartment of a power module TM 5000 or TM500 is depending on th type of instrument DM 5110 or DM 511 Hefer to the manual of your power module for line voltage requirements and power module operation To prevent damage to the DM 5110 DM 511 turn the power module off before installation or removal Do not use excessive force to install or remove Before installing the instrument in the power module align the instrument chassis with the upper and lower guides of the selected compartment Press the instru ment in and firmly seat the circuit board in the inter connecting jack To remove the instrument pull the release latch l
14. for instance an up going LO LIMIT reaches the HILIMIT value the HI LIMIT will also be incre mented in the same rate as the LO LIMIT The user will be notified by a beep from the beeper Example If the limits are to be set from default value to 10 and 12 kQ itis efficient to set the lo limit to 10 kQ first Then the Hi limit iust has to be changed from 10 to 12 KQ When the desired setting is reached exit from the LO LIMIT function is possible by pressing HILIM to set HI LIMIT COMP to the COMPARE mode BEEP to the BEEPER mode setting RUN return to previously selected function Other keys do not react The user can also start with the HI LIMIT setting by pressing HOLD and the HILIM key and afterwards adjust the LO LIMIT During all these procedures the instrument will be in HOLD mode and this will be shown by the HOLD led in the display area Every time the function is changed within the HOLD mode the last measurement that was made before the HOLD mode was entered will be recalculated instruction Manual Operating Instructions DM 5110 DM 511 The display reading value is adjusted to the new settings Only after pressing RUN the instrument will make new measurements To change the range the 50 60Hz the 3 5D 4 5D or the IEEE settings the user has to leave the HOLD mode first RUN key The reason is to prevent set tings to be changed erroneously Compare Another
15. k D gt E Programming DM 5110 CALIBRATION COMMANDS LIST CAL Calibration Command Function Operational Type Syntax CAL Response CAL error number Discussion This command will start the calibration of the instrument and reports the result NOTE If the CAL command is used when the voltage ref erence is not setup the calibration of the instru ment can be affected If the cal jumper is set for calibration disable and the CAL command is sent error 260 is re turned If the deviation between the reference voltage and the predicted calibration reading is to great then error 655 is returned Other errors that can occur are numbers 651 654 The error query responses and status information is as listed below Calibration step done 455 Calibration stopped 651 Calibrate LOVAC first 652 Unstable measurement error 653 Eeprom error 654 Calibration beyond bounderies 655 For more information on the calibration procedure see the Service Manual Instruction Manual Query Syntax CALEN Return to Normal Operation Function Type Query CALEN Query Response CALEN ON OFF Discussion This query will return the state of the calibration jumper If CALEN ON is returned then the jumper is set to enable the calibration of the instrument If CALEN OFF is returned then the jumper is set to disable the calibration of the in
16. lt l l voo oa L q Maximum laines Specification DM 5110 DM 511 Table 1 2 Cont Characteristics Performance Requirements Supplemental information DIRECT CURRENT DC 4 5 digit front panel inputs only For piai of the 3 5 digit mode add 1 display count Accuracy for 200 uA 2 mA 20 mA 200 mA and 2000 mA ranges Automatic or manual ranging 18 to 28 c 0 1 96 of reading 0 01 96 of F S 0 to 18 28 to 50 C 0 3 of reading 0 025 96 of F S Step Response Time 50 msec to 0 05 96 of step Input resistance Range Approx Res 200 pA 1 0 kQ 2 mA 100 0 Q 20 mA 10 2 Q 200 mA 1 2 Q 2000 mA 0 26 Q Maximum Open Circuit Input Voltage mA to LOW Maximum floating voltage i mA to GND 1000 V peak LOW to GND ass V peak 250 V peak Maximum Input Current 2A any aie 10 nA Instruction Manual l 1 9 Specification DM 5110 DM 511 Table 1 2 Cont Performance Requirements Supplemental information ALTERNATING CURRENT AC coupled True RMS 4 5 digit front panel inputs only lFor specifications of the 3 5 ea mode add 1 display count _ unm for 200 Automatic or manual 2 mA 20 mA 200 mA E ranging and 2000 mA ranges 18 to 28 C Input gt 200 counts Input gt 200 counts 0 8 of reading 0 05 of F S 0 3 of reading 0 05 of F S 20 Hz to 100 Hz 100 H
17. resets the input and output buffers clears any buffered settings waiting for the GET message and clears the instrument status except for the power on status NOTE DCL and SDC do not reset the instrument to the power on state Use the INIT command to reset the instrument to the power on state SDC Selected Device Clear Same as DCL message The instrument responds to SDC only if it is listen addressed SPE Serial Poll Enable SPD Serial Poll Disable The SPE message enables the instrument to output serial poll status bytes when it is talk addressed The SPD message switches the instrument back to its normal operation of sending the data from the Output Buffer MLA My Listen Address MTA My Talk Address The primary listen addresses are established by the instrument s GPIB address The current setting is displayed when the ID button is pressed When the instrument is addressed to talk or listen the front panel ADDR indicator is illuminated 7 Instruction Manual Programming DM 5110 GET Group Execute Trigger If DT is on and GET is received while listen ad dressed a trigger is created and the conversion se quence is started The GET message is ignored and an SRQ generated if the DT function is disabled DT OFF the instrument is in the local state or if a message is being processed when GET is received GTL Go To Local This causes the instrument to go to a local state This state is de
18. the range is set to au torange starting in the highest range If the argument is valid the instrument rounds the argument up to the first full scale value and selects that specific range If the argument is above the highest range the in strument generates an execution error and asserts SRQ if RQS is on number i lt NRF gt valid dBm to the instrument Ranges sn TB assente 11 76 dBm S07 48 ossa 8 24 dBm e IB scie 428 24 dBm 22 02 seen 448 24 dBm 340 02 ioisitsiuess 456 20 dBm 00 00 dBm equals 1 mWatt in 600 Q load 0 775 V RMS Programming DM 5110 DBV number dB Voltage Function Type Setting Setting Syntax DBV lt number gt Discussion This command will set the instrument to the DBV function Also sets the range of the DBV function The DBV function is a recalculated version of the ACV ranges The reading is converted to dBV 1 volts reference The argument is used to determine the range If there is no argument the range is set to au torange starting in the highest range If the argument is valid the instrument rounds the argument up to the first full scale value and selects that specific range If the argument is above the highest range the in strument generates an execution error sana asserts SRQ if RQS is on number lt NRF gt valid dBV to the instrument Ranges 80 0 eee 13 98 dBV 240 0 E 6 02 dBV 20 0 EEE 426 02 dBV P EH 46 02 dBV
19. Chan s ss ss sss ss essen sense nne nnn 3 6 3 2 Definition of STB Bits E E E E TE ifa see 3 31 Table Page 1 1 IEE 488 Interface Subsets eere m 1 2 1 2 pe E Characteristics e aa 1 3 1 3 Environmental Characteristics T Oaa Egis 1 13 2 1 Summary of Keyboard Functions esee ene nenen 2 13 2 2 Resistance Ranges 2 17 2 3 Comparison of Average and TRMS Meter Readings Decide 45 3 1 Function Range v s Range Number v s ss sss sss sss sss sss 3 24 3 2 Error Query and Status Information eese tate tta ttnttnten tetto tosta tnn 3 32 3 3 Detailed Error Listing NOAE ea a E 3 33 iii instruction Manual 4 E HT a E E bi d x 4 DM 5110 DM 511 Operators safety Summary The general safety information in this part of the summary is for both operating and servicing personnel Specific warnings and cautions will be found throughout the manual where they apply and do not appear in this summary TERMS In this Manual CAUTION statements identify conditions or practices that could result in damage to the equipment or other property WARNING statements identify conditions or practices that could result in personal injury or loss of live As Marked on Equipment CAUTION indicates a personal injury hazard not
20. DM to the nearest TEKTRONIX Service Center Instruction Manual 4 d 9 a ES l a Ta 2 G i 2 x e tiis E Section 3 Programming DM 5110 PROGRAMMING This section does not apply to the DM511 introduction This section of the manual provides information for programming the DM 5110 Programmable Digital Multimeter via the IEEE 488 1 digital interface The IEEE 488 1 interface function subsets for the DM 5110 are listed in Table 1 1 in Section 1 The DM 5110 can be operated by remote control over the digital bus as specified in IEEE Standard 488 1 1987 Standard Digital Interface for Program mable Instrumentation and is commonly called the General Purpose Interface Bus GPIB The information in this section assumes that the reader is knowledgeable in GPIB bus communica tion and has some experience in programming the System TM 5000 instruments are designed to communicate with any bus compatible controller that can send and receive ASCII messages commands over the IEEE 488 1 bus These commands program the instruments or request information from the instru ments Recommended controllers for use in programming the DM 5110 are IBM PC compatible controllers such as the Tektronix PEP 301 PEP303 with the Tektronix GURU GPIB User s Resource Utility for the IBM amp PC software and GPIB interface card and the 2402 TekMate Commands for T
21. HOLD LOLIM UP or DOWN RUN HOLD HILIM UP or DOWN RUN HOLD COMP UP or DOWN RUN HOLD COMP UP or DOWN RUN or any Function Key HOLD BEEP UP J or DOWN RUN HOLD BEEP UP or DOWN RUN or any Function Key satin et he L BUM ATI ve rri vum a A P i A a t i EEE NT i T ra rq err TT tr em HCl GPIB setting functions DM5110 only INST iD HOLD GPIB UP or DOWN RUN HOLD GPIB GPIB UP or DOWN RUN HOLD GPIB GPIB UP or DOWN RUN Instruction Manual S i 4 l 9 EE EE Em NN EBE EE EE lh nH HH HH HH 889 HT NB 3 e wot 4 l TR x x J ux 1 l p i BASIC MEASUREMENTS The foliowing paragraphs describe the basic proce dures for making voltage resistance current and dB measurements For detailed explanation of GPIB commands see the Programming section High Energy Circuit Safety Precautions To optimize safety when measuring voltage in high energy distribution circuits read and use the direc tions in the following warning Dangerous arcs of an explosive nature in a high energy circuit can cause severe personal injury or death If the meter is connected to a high energy circuit when set to a current range low resistance range or any other low impedance range the circuit is virtu ally shorted Dangerous arcing can also result when
22. Initiate Type Operational Syntax INIt Discussion The INIT command will reset the instrument to the power on state except that a power on SRQ report will not occur The power on setting list is as indicated below The instrument will be in the local state with the fol lowing default settings BEEPER OFF CALC OFF DIGIT 4 5 DT OFF FUNC DCV LIMITS O 0 MODE RUN MONITOR OFF NULL 0 OPC OFF OVER OFF RANGE 0 RQS ON EL USER OFF Instruction Manual Programming DM 5110 LIMits Limit Setting Type Setting or Query Setting Syntax LIMits lt high limit gt lt low limit Query Syntax LiMits Query Response LIMITS high limit gt lt low limit Discussion high limit NRF valid reading for function low limit NRF valid reading for function less or equal than high limit Units are in Amps Volts Ohms dB s and C The arguments for this command set the value of the limits used by the CALC CMPR calculation the BEEPER mode and the MONITOR SRQ Error 232 will occur when 1 The lo limit argument is above the hi limit argu ment 2 Argument 1 and or 2 are beyond the span ofthe selected function The settings remain stored in memory until the func tion is changed Note that the front panel operation is different at this subject Programming DM 5110 LINEFreq Line Frequency Type Query Query Syntax LINEf
23. Lockout LLO interface message is received If in LOCS and REN is asserted it will enter the Local With Lockout State LWLS or if in REMS it will enter the Remote With Lockout state RWLS when LLO is received m The LWLS and RWLS state transitions are com pletely controlled by the controller Local With Lockout State LWLS If the DM 5110 enters the Local With Lockout State the REM indicator light will not be lit and the instru ment operates exactly as in the Local State LOCS Remote With Lockout State RWLS While in RWLS the REM indicator will be illumi nated all setting commands queries interface messages wil be executed and all front panel controls except INST ID will be ignored If the GTL message is received while in RWLS the instrument goes to the Local With Lockout State LWLS NOTE The DM 5110 returns to the Local State LOCS any time the HEN bus line becomes un asserted false Programming DM 5110 DEVICE DEPENDENT COMMAND SET Introduction The remote control messages for the DM 5110 are device dependent messages on the GPIB As such they are not specified in IEEE Standard 488 1 1987 However the Tektronix Standard Codes and For mats specifies the syntax delimiters and charac ters allowed for high level programming of TEKTRONIX instruments All front panel functions are also GPIB controllable except for the FRONT REAR INPUT switch 50 60 Hz setting the GPIB addres
24. MESSAGE AND COMMUNICATION PROTOCOL Introduction The DM 5110 is controlled by the front panel keys or via commands received from the controller There are four types of command Measurement Setting commands Control instrument settings User Interface Setting Commands Control the GPIB interface settings and the front panel Query Output Request data Operational Cause a particular action When the instrument is in the remote state it pro vides a response or executes all commands as ap propriate In the local state only query output commands are executed setting and operational commands gen erate error responses since the instrument func tions are under front panel control The DM 5110 accepts abbreviated commands like other products in the TM 5000 series Command Separator A message consists of one command or a series of commands followed by a message terminator Messages consisting of multiple commands must have the commands separated by semicolons A semicolon at the end of a message is optional For example each line below is a message INIT TEST INIT RQS ON USER OFF ID SET TEST Message Terminator Message may be terminated with EOI or the ASCII line feed LF character Some controllers assert EOI concurrently with the 3 2 last data byte others use only the LF character as a terminator The instrument can be set to accept either terminator With EOI ONLY sel
25. ON 9 9 l 576 73 59 69 105 79 121 72 10 152 10 172 26 1010 LF SUB J j z I A 3A 588 4A 74 6A 106 7A 122 13 53 shna 11 11 173 27 G g k 4 rdi 598 4B 107 7B 123 1 B G 155 19 175 29 S 12 15 35 55 13 75 115 aag 29 1101 CR GS _ resen D 13 208 2D 45 3D 618 4D 77 85M 1D 16 96 56 14 so 116 14 196 90 156 4a 476 30 E 14 1E 90 B 2E 46 3E 62 f 4E 78 SR 94 6E 110 7E 126 17 37 57 15 77 117 15 137 157 151177 DEL C F 15 1F 31 2F 47 3F 63 f 4F 79 5F 95 f eF 111 7F 127 ADDRESSED UNIVERSAL LISTEN TALK SECONDARY ADDRESSES COMMAND COMMANDS ADDRESSES ADDRESSES OR COMMANDS KEY octal GPIB code REF ANSI STD X3 4 1977 ASCII characters Tektronix IEE STD 488 1978 nex decimal are NON NE ISO STD 646 1973 Fig 3 1 ASCI and IEEE GPIB Code Chart 3 6 Instruction Manual 96 70 112 K 2B 14 au 74 2098114 134 28 154 312 1774 2 rtu M G 12 aG eol 4c 76 5C s 108 7C 124 M m 109 7D 125 o 3 1 i J g g REMOTE LOCAL FUNCTION OPERATION Introduction The Remote Local functions of the DM 5110 are controlled by the system controller and the front panel controls There are four states associated with the Remote Local functions of the DM 5110 two local states and two remote states Local State LOCS Remote State REMS Local With Lockout State LWL
26. With NULL enabled a hazardous voltage baseline level 40 V or more not displayed may be present on the input terminals If not sure what is applied to the input assume that a hazardous volt age is present TRMS Considerations Most DMMs actually measure the average value of an input waveform but they are calibrated to read its RMS equivalent This poses no problems as long as the waveform being measured is a pure low distortion sine wave For complex nonsinusodial waveforms however measurements made with an averaging type meter can be grossly inaccurate Because of its TRMS measuring capabilities the DM 5110 511 provides accurate AC measurements for a wide variety of AC input waveforms TRMS Measurement Comparison The RMS value of a pure sine wave is equal to 0 707 times its peak value The average value of such a waveform is 0 637 times the peak value So for an average respond ing meter a correction factor must be designed in This correction factor K can be found by dividing the RMS value by the average value as follows K 0 707 0 637 1 11 By applying this correction factor to an averaged reading a typical meter can be designed to give the RMS equivalent This is doing fine as long as the waveform is a pure sine but the ratios between the RMS and average values of different waveforms can vary considera bly Table 2 3 shows a comparison of common types of waveforms For reference the f
27. argument This error is also returned if the argument for NULL command is out of range 260 CAL locked This error is returned if the calibration jumper is not 03 set to the calibration position and the CAL command is sent to the DM 5110 SYSTEM ERRORS 300 SRQ byte z 99 decimal or 115 decimal busy bit set 302 System Error This error is the return if a instrument test has failed 04 The results are reported by sending TEST and a number representing the error type The response to the TEST query is TEST problem number The problem number can be either 0 if no error ha occurred or 302 if the test has failed 3 34 2 Instruction Manual U E x j F e P l o 6 E gt N f c i Programming DM 5110 Table 3 3 cont Error Type Error Cause Hu LLL SYSTEMEVENISQ tt I O EVENTS 400 Error Emor Type pa gnes lemas 401 Power on This will be returned if the instrument has just 65 powered on This event cannot be masked 402 Operation complete New measurement available 66 403 User Request If USER ON is set and the front panel ID button 67 is pushed SRQ is asserted and after the instru ment is polled this event code will be returned The SRQ byte returned by the poll is 67 or 83 busy bit on Error Type INTERNAL WARNINGS 600 SRQ byte 102 decimal or 118 decimal busy bit set Priority 601 Overrange error This error is generated when overrange occ
28. command will set the instrument to the DC Current function ACV This command will set the instrument to the AC Voltage function ACA i This command will set the i instrument to the AC Current function DBV This command will set the instrument to the AC Voits function and does a conversion to DBV DBM This command will set the instrument to the AC volts function and does a conversion to DBM OHMS This command will set the instrument to the Ohms function TEMP This command will make the instrument measure temperature This can be done using a special temperature probe P6602 connected to the front panel LOW and V Q Temp jacks Programming DM 5110 HELp Type Query Query Syntax HELp Query Response All Commands Discussion The HELP query will return all instrument commands ID Identification Type Query Query Syntax ID Query Response IDTEK DM5110 V81 1 Fx x Discussion The ID query will return the ID string for the DM 5110 The ID query will return the ID string in the form The breakdown of the string is as follows ID Command header TEK Manufacturer of the instrument DM5110 z Model number of the instrument V81 1 w Se and formats version this instrument conforms to Fx x sz The firmware version that is used in this instrument Instruction Manual 9 x MEF v w S s Te S 9 E Sar S ue U x INIt
29. key This is to prevent settings to be changed erroneously After pressing RUN any primary level key except HOLD UP DOWN or INST ID will make the in strument leave the COMPARE mode automatically If the COMPARE mode is combined with the beep mode the beeper will sound at HI and LO If the COMPARE mode is combined with the NULL function the limits are compared with the resulting value Temperature Measurements Pressing the HOLD and TEMP key will put the instrument in the temperature measuring function In this case the DM5110 will not remain in the HOLD mode but will automatically go to the RUN mode The temperature mode has just one range The reading is in degrees Celsius from 62 0 C to 240 0 C with a 0 1 degree resolution The display will show Open when overrange gt 250 0 C occurs and a blinking 62 0 C reading when the temperature is exceeding the minimum value Also when a valid measurement is taken above the maximum temperature of the P6602 cable 230 C the display will blink DMM Settings Pressing the HOLD and 50 60Hz ko will make the instrument show the 50 or 60 Hz setting in the display The setting can be changed with the UP and DOWN keys The RUN key will make the instrument leave the 50 60 Hz setting mode and store the new value in EEPROM Any other key does not react At power up the DMM will be in the 4 5 digit mode Pressing the H
30. messages with NRFD until it completes processing the first After the instrument executes a query output com mand in a message it holds the response in its Output Buffer until the controller makes the instru ment a talker If the instrument receives a new mes sage before all of the output from the previous mes sage is read it clears the Output Buffer before exe cuting the new message This prevents the control ler from getting unwanted data from old messages An other situation may cause the instrument to de lete output The execution of a long message might cause both the Input and Output buffers to become full output buffer 28 bytes When this occurs the instrument cannot finish executing the message because it is 3 4 waiting for the controller to read the data it has generated but the controller cannot read the data because it is waiting to finish sending its message Because the instrument s Input buffer is full and it is holding off the rest of the controllers message with NRFD the system is hung up with the controller and instrument waiting for each other When the instrument detects this condition it generates an error asserts SRQ and deletes the data in the Output buffer These actions allow the controller to transmit the rest of the message and informs the controller that the message was executed and that the output was de leted A TM 5000 instrument can be made a talker without having received a mes
31. other three immedi ately 2 9 Operating Instructions DM 5110 DM 511 Trigger When the instrument is in the HOLD mode the user can make one measurement and return to the HOLD mode automatically just by pressing the TRIG key once Limits The DM5110 has an upper HI LIMIT and a lower limit value LO LIMIT At power up these will both be set to the zero position 0 00 C 0 00 dBm or dBV Related to the limits are the BEEPER and COM PARE mode Note There is only ONE upper and ONE lower limit which once set are related to the function in which they were set The settings remain stored in memory until in a function other then the one in which the current limits were set the limits are changed or the COM PARE or BEEPER mode is chosen Example An operator wants to make measurements on 196 10 kOhm resistors After selecting the 20 kOhms range the LO and HI limits can be set to 9 900 and 10 100 kOhms in the secondary functions LOLIM and HILIM After selecting the COMPARE mode the RUN key will enable the operator to make measurements If an interruption occurs he still can make other measurements like voltage current temperature or normal mode resistance measurements without disturbing the limits and afterwards return to measure 10 kQ resistors immediately As soon as the limit setting COMPARE or BEEPER on off functions are selected in a function different then O
32. resolution to increase display range The decimal point is shifted one position to the right It is important to note that the increased display range does not increase the maximum allowable input level to the instrument For example on the 2 V range the DM 5110 511 will always overrange when more than 1 9999 V is connected to the input Example The instrument is set to the 2V DC range and a maximum 2 0000 V is established as the NULL value When 1 0000 V is connected to the input of the DM 5110 511 the display will read 1 0000 V When 1 0000 V is connected to the input the display will read 3 000 V NULL Correction A range in which the NULL correction is often used is in the 200 Ohms range compensating the resis tance of the test leads To use NULL for NULL correction perform the fol lowing steps 1 Disable NULL if presently enabled by press ing the NULL key The NULL indicator will turn off 2 Select the 200 Ohms range 3 Connect the test leads to the DM 5110 511 input and short them together 4 Press the NULL key In the display the NULL sign will be lit 5 Remove the short and connect the test leads to the resistance to be measured Baseline Levels Baseline values can be established by either apply ing baseline levels to the instrument or DM5110 only by setting baseline values with the GPIB bus An application could be AC measurement in ampli fiers or filter
33. the meter is Set to a voltage range if minimum voltage spacing is reduced or if maximum input voltage limits are exceeded When making measurements in high energy circuits use test leads that meet the following requirements Test leads should be fully insulated Only use test leads that can be connected to the circuit e g alligator clips spade lugs etc for hands off measurements Do not use test leads that decrease voltage spacing This diminishes arc protection and creates a hazardous condition Use the following sequence when testing power cir cuits 1 De energize the circuit using the regular in stalled connect disconnect device such as the circuit breaker main power switch etc 2 Attach the test leads to the circuit under test Use appropriate safety rated leads for this application 3 Setthe DMM to the proper function and range Instruction Manual Operating Instructions DM 5110 DM 511 4 Energize the circuit using the installed connect disconnect device and make measurements without disconnecting the DMM 5 De energize the circuit using the installed connect disconnect device 6 Disconnect the test leads from the circuit under The maximum common mode input voltage the volt age between input LO and chassis ground is 1000 V peak Exceeding this value may create a shock hazard Warm Up Period The DM 5110 DM 511 is usable immediately when it is first turned on However th
34. 1 2 Cont Performance Requirements OHMS 4 5 digit front and rear panel inputs For specifications of the 3 5 digit mode add 1 display count Characteristics Supplemental Information Accuracy for 200 Q 2kQ Automatic or manual 20 kQ 200 kQ 2 MQ Ranging and 20 MQ ranges 18 to 28 C Source cur V max at full scale 0 05 of reading 0 02 of F S 200 Q range 1 0 mA 0 2 V 2 kQ range 0 05 of reading 0 0196 of F S 1 0 mA 2 0 V 20 kQ range 0 05 of reading 0 02 of F S 10 pA 0 2 V 200kQ range 0 05 of reading 0 01 of F S 10 pA 2 0 V 2 MQ range 0 1 of reading 0 0296 of F S 0 1 uA 0 2 V 20 MQ range t 0 1 of reading 0 0196 of F S 0 1 pA 2 0 V 0 to 418 28 to 50 C Source cur V max at full scale 200 Q range 0 25 of reading 0 04 of F S 1 0 mA 0 2 V 2 kQ range 0 25 of reading 0 03 of F S 1 0 mA 2 0 V 20 kQ range 0 25 of reading 0 04 of F S 10 pA 0 2 V 200 kQ range 0 25 of reading 0 03 of F S 10 pA 2 0 V 2 MQ range t 1 of reading 0 04 of F S 0 1 pA 0 2 V 20 MQ range t 1 of reading 0 03 of F S 0 1 pA 2 0 V lt 0 2 sec 200 Q to 2 MQ ranges lt 2 sec in 20 MQ range Step Response Time Maximum input voltage any range front 300 V peak Maximum input voltage any range rear 60 V peak Maximum open circuit voltage 11V 1 8 l LS BEN Instruction Manual a A
35. 11 ELECTRICAL CHARACTERISTICS Table 1 2 Electrical Characteristics Characteristics Supplemental Information DIRECT VOLTAGE DV 4 5 digit front and rear panel inputs For specifications of the 3 5 digit mode add 1 display count Accuracy for 200 mV Automatic or manual ranging 2 V 20 V 200 V and 1000 V ranges 418 to 28 C 200 mV range 0 05 of reading 0 015 of F S 2V range 0 05 of reading 0 01 of F S 20 V range i 0 05 of reading 0 015 of F S 200V range t 0 05 of reading 0 01 of F S 1000 V range 0 05 of reading 0 02 of F S 0 to 18 28 to 50 C 200 mV range E 0 15 of reading 0 04 of F S 2 V range t 0 1 of reading 0 02 of F S 20 V range 0 15 of reading 0 02596 of F S 200V range t 0 1 of reading 0 02 of F S 1000 V range 0 196 of reading 0 0296 of F S 2 80 dB at 50 or 60 Hz Normal Mode Rejection Ratio 2 50 dB at 50 or 60 Hz 0 2 Hz lt 50 msec to 0 05 96 of step 10 MOhm 0 5 Instruction Manual 1 3 Specification DM 5110 DM 511 Table 1 2 Cont Characteristics Performance Requirements Supplemental Information Maximum Input Voltage Front panel inputs VOLTS Q TEMP to LOW 1000 V peak VOLTS Q TEMP to GND 1000 V peak LOW to GND 1000 V peak Rear interface Conn Pin 28B Hi to pin 28A Lo 60 V DC plus pk AC Pin 28B Hi or pin 28A L
36. 20 Oca aane 453 98 dBV 0 dBV equals a voltage of 1 V RMS DCA lt number gt DC Current Function Type Setting Setting Syntax DCA lt number gt Examples Range Selected DCA 18E 3 20 mA DCA 500E 3 2000 mA DCA No range Auto ranging Discussion This command will set the instrument to the DC current function Also sets the range of the DC current function The argument is used to determine the range lf there is no argument the range is set to au torange starting in the highest range If the argument is valid the instrument rounds the argument up to the first full scale value and selects that specific range If the argument is above the highest range the in strument generates an execution error and asserts SRQ if RQS is on number lt NRF gt valid current input to the instru ment Ranges 200 pA 2 mA 20 mA 200 mA 2000 mA Instruction Manual 4 m DCV number DC Voltage Function Type Setting Setting Syntax DCV lt number gt Examples Range Selected DCV 15 20 V DCV 15E 2 200 mV DCV No range Auto ranging Discussion This command will set the instrument to the DC voltage function Also sets the range of the DC volt age function The argument is used to determine the range If there is no argument the range is set to au torange starting in the highest range If the argument is valid t
37. 202 98 3 Input and output 203 98 3 buffer full Settings conflict 204 98 3 Argument out of range 205 98 3 GET ignored 206 98 3 Beyond limit set or null capabilities 232 98 Cal locked 260 98 System events System Error 302 l 99 4 Power on 401 65 1 Operation Complete 402 66 6 5 ID user request 403 67 internal warning Overrange error 601 102 6 Device status Below limits 701 193 BEA 6 Above limits 703 195 6 t BEMARK If the message processor is busy serial poll response returns 16 higher Qo a E mE nm SPE ED He eH GB END EE HE He EEE E EB HE ND OU 3 32 Instruction Manual 9 i Programming DM 5110 DM5110 DETAILED ERROR LISTING Error ate ame oe 101 102 103 104 106 107 202 203 Table 3 3 Detailed Error Listing Error Type 9 Priority Error Cause COMMAND ERRORS 100 SRQ byte 97 decimal or 113 decimal busy bit set Header delimiter error Command argument error Argument delimiter error Missing argument Invalid message unit delimite Command not executable Settings lost due to rtl Input and output buffer full Settings conflict Argument out of range Instruction Manual Command header error When the keyword of a command is unknown or misspelled Incorrect syntax 02 When the delimiter between the header and the argument is miss
38. 500 V true RMS full scale In the dBV mode these ranges are 600 19 98 dBV 40 0 Lees 602 dBV B coca 426 00 dBV OMEN 446 02 dBV 20 05 scii 453 98 dBV 00 00 dBV equals a voltage of 1 V RMS _ In the dBm mode these ranges are 57 78 11 76 dBm 937 78 8 24 dBm el aw oai 28 24 dBm 32 02 oett 48 24 dBm 42 22 456 20 dBm 00 00 dBm equals 1 mWatt i ina 1 600 W load 0 775 V RMS It is advisable to use the dB ranges in autoranging mode to insure measurements are taken in a range where the best accuracy is achieved If a measurement is less then 1 of full scale anda more sensitive range is available the user is notified by blinking of the sign led Overrange in the dB ranges is shown by the blinking maximum value of that range A zero counts measurement is con verted to a 199 99 reading Instruction Manual Z l l l v 7 1 E c 3 E NULL Mode To provide the ability to make relative measure ments the NULL mode is made available in all func tions To use the NULL mode first select the desired func tion and range then apply the offset measurement to the instrument and press the NULL key The present reading will become the null value The NULL led will indicate that the display value is relative A special situation exists when the NULL mode is used in the dBV and dBm f
39. 600 Q load Automatic or manual 00 00 dBV 1 V RMS _ ranging 18 to 28 C Accuracy fordBV 0 3 dB from 34 dBV to 54 dBV Frequency 20 Hz to 20 kHz autoranging 0 6 dB from 54 dBV to 34 dBV Frequency 20 Hz to 10 kHz 7 1 0 dB from 60 dBV to 54 dBV Frequency 20 Hz to 10 kHz Accuracy for dBm 0 3 dB from 32 dBm to 56 dBm Frequency 20 Hz to 20 kHz autoranging 0 6 dB from 52 dBm to 32 dBm Frequency 20 Hz to 10 kHz t 1 0 dB from 58 dBm to 52 dBm Frequency 20 Hz to 10 kHz 0 to 18 m 28 to 50 C Accuracy for dBV 0 4 dB from 34 dBV to 54 dBV Frequency 20 Hz to 20 kHz 0 8 dB from 54 dBV to 34 dBV 1 5 dB from 60 dBV to 54 dBV autoranging Frequency 20 Hz to 10 kHz Frequency 20 Hz to 10 kHz Accuracy for dBm 0 4 dB from 32 dBm to 56 dBm Frequency 20 Hz to 20 kHz autoranging 0 8 dB from 52 dBm to 32 dBm Frequency 20 Hz to 10 kHz 1 5 dB from 58 dBm to 52 dBm Frequency 20 Hz to 10 kHz 0 01dB Step Response time lt 0 3 sec to1 ofstep Maximum Resolution input Impedance 2MQ 41 paralleled by lt 50 pF Maximum Input Voltage S ront panel inputs VOLTS Q TEMP to LO 500 V RMS or 600 V DC VOLTS Q TEMP to GND 1000 V peak LOW to GND 1000 V peak NEN Pin 28B Hi to pin 28A Lo Pin 28B Hi or pin 28A Lo to Chassis 60 V DC plus pk AC 60 V DC plus pk AC Instruction Manual _ 4 7 Specification DM 5110 DM 511 Table
40. AND ERROR Indicates the instrument has received a command that it cannot understand EXECUTION ERROR Indicates that the instrument has received a command that it cannot execute INTERNAL ERROR Indicates the instrument has detected a hard ware condition or firmware problem that pre vents operation SYSTEM EVENTS Events that are common to instruments in a system e g Power on User Request etc INTERNAL WARNING internal warning indicates that the instrument has detected a problem The instrument remains pparaiional but the problem should be corrected DEVICE STATUS Device dependent events see Fig 3 2 Instruction Manual i R c x E E E ba 4 P 7 v a aD aD B Instruction Manual Programming DM 5110 If 0 STB indicates event class If 1 STB indicates device status 1 if requesting service 1 indicates an abnormal event 1 if message processor is busy p Define Events DATA BITS DECIMAL Status Byte Fig 3 2 Definition of STB bits The instrument can provide additional information about many of the events particularly the errors reported in the Status Byte After determining that the instrument requested service by examining the STB the control ler may request the additional information by sending error query ERR In response the instrument returns a code which defines the event These codes are descri
41. DATA Returns the complete state of the instrument Response from DM SOURCE FRONT REAR Set to the temperature function Start self test Enable INST ID Service request Disable INST ID Service request Response from DM USER ONJOFF Instruction Manual 3 in t 7 l 3 E t b E d E b E U g i 7 Programming DM 5110 DETAILED COMMAND LIST ACA AC Current Function Type Setting Setting Syntax ACA number Examples Range Selected ACA 18E 3 20 mA ACA 500E 3 2000 mA ACA No range Auto ranging Discussion number lt NRF gt valid current to the instrument This command will set the instrument to the AC current function Also sets the range of the AC current function The argument is used to select the range If there is no argument the range is set to au torange starting in the highest range If the argument is a valid current reading the instru ment rounds the argument up to the first full scale value and selects that specific range If the argument is above the highest range the in strument generates an execution error and asserts SRQ if RQS is on Ranges 200 uA 2 mA 20 mA 200 mA 2000 mA Instruction Manual ACV AC Voltage Function Type Setting Setting Syntax ACV lt number gt Examples Range Selected ACV 15 20 V ACV 15E 2 200 mV ACV No range Auto ranging
42. LIMIT LO if the reading is less than the LOW LIMIT or PASS in all other cases The value of the limits is set by the LIMITS com mand Over the GPIB bus the SEND command will make the DM5110 output the following results 1 for LO 2 for PASS 3 for HI 1E 99 or 1E 99 for overrange The OFF argument turns off the compare function instruction Manual r a 4 ial N a i 3 P i Z l l S 4 79 i E DATA Type Query Syntax DATA Response number gt Discussion This command returns one of the responses listed below 1 After power on returns O until a reading is available 2 If a MONITOR SRQ has occurred DATA returns the measurement causing the SRQ 3 If neither of the above condition is true DATA returns the most recent reading DATA will return the same reading until the next con version is triggered and a new reading is available It does not trigger a conversion nor wait to return a new reading as the SEND command does Instruction Manual Programming DM 5110 DBM number dB Milli Watt Function Type Setting Setting Syntax DBM lt number gt Discussion This command will set the instrument to the DBM function Also sets the range of the DBM function The DBM function is a recalculated version of the ACV ranges The reading is converted to dB with a 1 mW refer ence 775 Volt If there is no argument
43. M 5000 programmable instruments are designed for compatibility among instrument types The same commands are used in different instruments to control similar functions After the DM 5110 is set to the remote mode by a system controller its operating modes and front panel settings can be set and read by programming mnemonics sent to it in ASCII over the bus Operating modes and front panel settings can be read by the controller in either the local or remote state instruction Manual TM 5000 programmable instruments connect to the GPIB through a TM 5000 power module Refer to the Operating Instructions section for installing the instrument in the power module The DM 5110 is designed to operate in a single compartment of a TM 5000 series IEEE 488 1 compatible power module The DM 5110 is connected to the bus through a passive connector system in the power module All buffering is contained in the instrument IEEE 488 1 BUS ADDRESS AND TERMINATOR The GPIB address and terminator are stored in EEPROM The address and terminator are set via the front panel as described in Section 2 Table 2 1 daub Setting Functions At shipment the DM 5110 s GPIB address is fac tory set to 16 the terminator is set for EO only The GPIB address and terminator can be changed as indicated in Section 2 Table 2 1 under GPIB Setting Functions Programming DM 5110 DM5110 RESPONSE TO INTERFACE CONTROL MESSAGES
44. OLD and the 3 5 4 5 key will make the instrument show 3 5 or 4 5 in the display The setting can be changed with the UP and DOWN keys The RUN key will make the instrument leave the 3 5 4 5 set mode and proceed in the SPECIO reso lution Any other key does not react The 3 5 digit mode enables faster response measurement It is made visible as the least signifi cant digit is blanked In the 3 5 digit mode COMPARE NULL and BEEPER modes are still valid GPIB Settings Pressing the HOLD and the GPIB key will make the instrument show the primary GPIB address set ting in the display Adxx The UP and DOWN keys enable the user to incre ment and decrement to an alternative address set ting The other keys that will react are RUN to save the corrected GPIB address or GPIB to proceed to the next GPIB function the LF EOI setting In this function the display will show LF or EOI in the display The setting can be changed with the UP and DOWN keys The other keys functioning are RUN to save all GPIB settings in EEPROM or GPIB to return to the address setting mode A GPIB message can be terminated in two different ways EOI Mode The instrument terminates on EO only LF Mode When the instrument is in the LF mode a LF or EO in the input stream will terminate the message Instruction Manual U s z 5 ka s
45. RQ SRQ s are not generated for subsequent measure ments outside the limits until the SRQ is serviced and the measurement is reported to the controller in response to the DATA query Instruction Manual Programming DM 5110 NULL null value Type Setting or Query Setting Syntax NULL null value gt Query Syntax NULL Query Response NULL number Discussion null value NRF value for the null calculation valid reading for function This command enables the NULL function the argu ment specifies the value of the offset If no null value argument is sent the NULL value is acquired from the next valid reading The NULL function is disabled when the measure ment function is changed or when the argument is 0 Changing the measurement function also sets the argument to 0 1 If the argument is not a valid reading for the function selected the instrument generates a command error and asserts SRQ if RQS is on The NULL query returns the value used in the null calculation If the number 0 is returned the NULL function is disabled If any other value is returned the NULL function is enabled and set to the value returned X Programming DM 5110 OHMs lt number gt Ohms Function Type Setting Setting Syntax OHMs lt number gt Examples Range Selected OHMS 18 200 Q OHMS 500 2 kQ OHMS 1 5E 7 20 MQ OHMS Auto ranging Discussion number NRF va
46. S Remote With Lockout State RWLS Local State LOCS In LOCS the front panel controls are under the control of the operator the front panel settings can not be changed via setting commands from the bus However the instrument will respond to query com mands via the GPIB bus REN bus line need not be asserted In a local state all front panel controls are opera tional If a remote command cannot be executed because the instrument is in a local state an execution error will be reported to the controller error 201 Remote State REMS When the DM 5110 receives its listen address with the REN bus line asserted and rtl is false it enters the Remote State and the REM indicator light is illu minated While in REMS the instrument responds to and executes all setting commands queries and interface messages For all commands having cor responding front panel controls the front panel is updated to display the new settings as the com mands are executed If the DM 5110 is in REMS there are three condi tions under which it will return to the Local State LOCS when any key except INST ID is depressed by the operator when the instrument receives the Go To Local GTL interface message or Instruction Manual Programming DM 5110 If the REN bus line becomes un asserted false NOTE The DM 5110 can be in either the Local State LOCS or Remote State REMS when the Local
47. Test Because of their 2 V fullscale voltages the 2 kQ 200 kQ and 20 MQ range can be used to test diodes indicated by in the display Testing diodes can be done as follows 1 Select the 2 kQ range 2 Forward bias the diode by connecting the red ter minal of the DM5110 511 to the positive side of the diode A good diode will typically measure between 300 Q and 1 kQ 0 3 1 0 Volts at 1 mA 3 Reverse bias the diode by reversing the connec tions on the diode A good diode will overrange the display Insulation Resistance Measurements Measurement of high resistance values can be done by using the 10 MQ input resistance of the DM5110 511 in the DCV ranges together with a DC Voltage supply This can be done as follows 1 Select the DCV function by pressing the DCV key 2 Select autoranging 3 Press the NULL key with open DM inputs The NULL indicator will turn on and the display will null In this way possible leakage of the DM inputs is compensated 4 Connect the DM5110 511 VOLTS Q TEMP terminal in series with the resistance that is to be measured and connect them to a DC Voltage of for instance 10 V Connect the Low terminal to chassis ground and to the Low terminal of the DC voltage Operating Instructions DM 5110 DM 511 5 Leakage currents through the resistance to be measured will cause a voltage across the 10 MQ input of the DM5110 511 A 1 GigaOhm resistor at 10 Volts will give a readin
48. auses the instrument to trigger the instrument to make a measurement If GET is received while the message processor is busy or when DT is OFF the instrument gener ates an error which indicates the GET was ig nored error 206 l ERRor Type Query Query Syntax ERRor Query Response ERR lt number gt Discussion The ERROR query will return an error message showing the status of the instrument ERROR can be caused by incorrect command or the user pressing the ID button overrange or other events Instruction Manual t E L j Z i N z y E m E H E s LE b m B EVent Type Query Query Syntax EVent Query Response EVENT number gt Discussion The EVENT query will return the same informa tion as the ERROR query except that the re sponse header is EVENT instead of ERROR Instruction Manual Programming DM 5110 FUNCtion DCV DCA ACV ACA OHMS DBM DBV TEMP Function Selection Type Setting or query Setting Syntax FUNCtion DCV DCA ACV ACA OHMS DBM i DBV TEMP Query Syntax FUNCtion Query Response FUNC DCV ACV DCA ACA DBV DBM OHMS TEMP Discussion The FUNCTION command will set the function of the DM 5110 When the FUNCTION command is sent the range is not changed DCV This command will set the instrument to the DC Voltage function DCA This
49. bed in Table 3 2 All events and errors have a priority assigned to them If more than one error or event is put into the Queue and RQS is ON then the oldest error is returned first and the highest priority is returned next If more than one error or event is put into the Queue and RQS is OFF then the highest priority error will be returned first Only one error is stored at each priority level If an error of a certain priority is queued and another error with the same priority occurs the new error is discarded If a message being sent to the instrument has an error in it then all message units up to the error are handled The message unit with the error in it and all remaining message units are discarded Programming DM 5110 Table 3 2 ERROR QUERY AND STATUS INFORMATION Abnormal Events Error Query Response Serial Poll Response Priority Level l as Meter ra m a a mm m n c n M R Command errors Command header error 101 97 2 Header delimiter error 102 97 2 Command argument error 103 97 2 Argument delim error 104 97 2 Missing argument 106 97 2 Inval message unit del 107 97 2 Execution errors Not executable in local 201 98 3 Settings lost due rtl
50. cessed and stored in the Pending Settings buffer before execution takes place Programming DM 5110 This allows the user to specify a new instrument state without having to consider whether a particular sequence would be valid Execution of the settings occurs when the instru ment processes the message terminator a query output command or an operational command in a message When the instrument processes a query output com mand in a message it executes any preceding set ting commands to update the state of the instru ment It then executes the query output command by retrieving the appropriate data and putting it in the Output Buffer Then processing and execution continue for the remainder of the message The data is sent to the controller when the instrument is made a talker When the instrument processes an operational com mand in a message it executes any preceding set ting commands before executing the operational com mand Multiple Messages The Input Buffer has finite capacity about 50 bytes and a single message may be long enough to fill it In this case a portion of the message is processed before the instrument ccepts additional input During command processing the instrument holds off additional data by asserting NRFD until space is available in the buffer When space is available the instrument can accept a second message before the first has been proc essed However it holds off additional
51. d limit of the bandwidth 7 Decrease the frequency input until the dB read ing again falls to 3 00 dB The frequency meas ured on the signal generator then is the low end limit of the bandwidth Temperature Measurements In combination with the Tektronix P6602 tempera ture probe the DM5110 511 can measure tempera ture from 62 0 C up to 240 0 C The P6602 probe is especially designed for tem perature sensing on electronic components because the tip has a minimal thermal leakage This enables the user to accurately measure the temperature of small size components l The NULL function can be used efficiently when a raise in temperature of parts needs to be measured The procedure to make temperature measurements iS 1 Connect the P6602 to the LOW and V Q T emp input jacks 2 Select the temperature measurement mode press ing the HOLD and TEMP keys 3 Allow the P6602 some time to adjust to ambient temperature 4 Push the NULL key to set the ambient tempera ture as baseline level 5 Now a relative temperature measurement can be made Instruction Manual e d gt 4 z I Operating Instructions DM 5110 DM 511 Table 2 3 Comparison of Average and TRMS Meter Readings AC AC Coupled Averaging Coupled Responding TRMS Meter Peak Meter Percent Waveform _ m Value _ Reading Error Sine E vr 10 V 0 96 l J Half Wave S
52. e OVER ON OFF Discussion The OVER ON command will cause an over range event to report an error If RQS is ON then the ERROR will be reported using the HOS line If RQS is OFF then the ERROR query will be used to report the ERROR if OVER is OFF the instrument returns 1 E499 SRQ Instruction Manual when talked to indicate over range does not assert Programming DM 5110 8 23 Programming DM 5110 RANge number Range Setting Type Setting or Query Setting Syntax RANge number Query Syntax RANge Query Response RANGE lt number Discussion This command will set the range of the DM5110 If a number is given the range is set according to Table 3 1 Number lt NRF gt Valid range to the instrument Table 3 1 Function Range v s Range number aiie rere rer po LA Full Scale value of range DCA ACA Ohms dBV dBm TEMP E ER r Lond Nd reer hdi yid yr RE T RC ees AUTO AUTO AUTO AUTO 62 to 240 C 200 mVAC 62 to 240 C 62 to and C 62 to 240 C ma rra 62 to 240 C 2000 mA 2000 mA 2000 mA 2000 mA i VAC Note When internal cal jumper is in Cal position range 0 generates error 205 62 to 240 C 62 to 240 C l R 9 3 24 Instruction Manual EAM um Programming DM 5110 RQS ON OFf SENd
53. e for Programmable Instrumentation In this manual the interface is called the General Purpose Interface Bus GPIB IEEE 488 1 INTERFACE FUNCTION SUBSETS IEEE Standard 488 1 1987 identifies the interface function repertoire of a device on the bus in terms of interface function subsets These subsets are defined in the standard The subsets that apply to the DM 5110 are listed below Table 1 1 IEEE 488 1 INTERFACE FUNCTION SUB SETS Source handshake Complete capability Acceptor handshake Complete capability Untalk if MLA Unlisten if MTA Service request Complete capability Remote Local Complete capability including local lockout Parallel Poll Does not respond to parallel poli Device clear Complete capability Device trigger with GET Non controller function Open collector drivers IEEE 488 1 BUS ADDRESS AND TERMINATOR The GPIB address and terminator are stored in EEPROM The address and terminator are set via the front panel as described in chapter 2 Accessories and Options Standard Accessories Included 1 DM5110 Operators Manual 070 7478 xx 1 Pair of test leads 196 3212 xx 1 2 1 GPIB Reference Guide DM5110 070 7559 xx 1 Instrument Interface Guide DM 5110 eceeeeeeeee eee e esse esses 0 70 7 560 XX Note The test leads PL260 196 3212 xx are rated for 1000 V based on UL evaluation Optional Accessories include T
54. e instrument must be allowed to warm up for at least 30 minutes to achieve rated accu racy The null feature serves as a means of baseline sup pression by allowing a stored offset value to be subtracted from subsequent readings When the NULL key is pressed the instrument takes the cur rently displayed reading as baseline value All sub sequent readings represent the difference between the applied signal level and the stored baseline A baseline level can be established via input levels or remotely entered values for only one measure ment function at a time Once a baseline is established for a measurement function that stored level will be the same regard less of what range the DM 5110 511 is in For example if 1 Vi is established as the baseline on the 2 V range then the baseline will also be 1 V on the 20 V through 1000 V ranges A NULL baseline level can be as large as full range NOTE The following discussion on dynamic range is based on a display resolution of 4 1 2 digits At 3 1 2 d resolution the number of counts would be reduced by a factor of 10 i 2 15 Operating Instructions DM 5110 DM 511 By design the range of the DM 5110 511 display is 19999 counts With NULL enabled in DCV or DCA with a maxi mum NULL value of 20000 counts the reading that is to be displayed does not match the capabilities of the display in part of the range Then the resulting reading is shown with reduced
55. econdary level Pressing the key sets the instrument in the High LIMit setting mode Cs mA Input Terminal used in conjunction with the LOW input connector for current measurements Low Common terminal for all types of measurement V Q TEMP Input Terminal used in conjunction with the LOW input connector for voltage resistance and temperature measurements 2 5 Operating Instructions DM 5110 DM 511 GD Ground Terminal 85 REM led Chassis ground terminal Illuminated when the instrument is in the GPIB remote state 82 AUTO led ADDR led Illuminated in AUTO ranging Illuminated when the instrument is being GPIB Note addressed to talk or listen This led is blinking constantly when the inter nal jumper is in the CAL position TAKE CAREI 37 INPUT switch The instrument can now easily be recalibrated Contact qualified service personnel Selects the FRONT or REAR connection of the LOW and VOLTS Q TEMP inputs In the REAR 83 HOLD led position the front panel mA LOW and VOLT Q TEMP jacks are disconnected from Illuminated when the HOLD mode is on and also the instrument indicating secondary keyboard level NULL led Illuminated when the NULL mode is on 4 N e e J i 7 i ep l a ES Instruction Manual A BN FRONT PANEL OPERATION General In this section of the ma
56. ected as the terminator the i strument interpretes a data byte received with EOI asserted as the end of the input message it also asserts EOI concurrently with the last byte of the output message With the LF EOI setting the instrument interpretes the LF character without EO asserted or any data byte received with EOI asserted as the end of an input message it transmits carriage return CR fol lowed by the line feed the LF with EO asserted to terminate output messages Refer to Section 2 Table 2 1 for information on setting the message terminator TM5000 instruments are shipped with EOI ONLY selected Formatting a Message Commands sent to TM5000 instruments must have the proper format syntax to be understood how ever this format is flexible so many variations are acceptable The following describes this format and the acceptable variations The instruments expect all commands to be en coded jn ASCII however they accept both upper and lower case ASCII characters All data output is in upper case A command consists of a header and if necessary followed by arguments A command with arguments must have a header de limiter that is the space character SP between the header and the argument The space character SP carriage return CR and line feed LF are shown as subscript in the follow ing examples Instruction Manual S 7 d p 4 i EJ g 5
57. ement modes The settings of the GPIB address and terminator are initiated by the frontpanel keys A manually operated switch can select a front or rear connection to the LOW and Volts Q Temp inputs This switch is not operated via the IEEE 488 1 bus but a query is available in the command set to monitor the setting The maximum voltage that can be applied to the rear interface connection is limited because of safety requirements The DM511 has the same specs as the DM5110 but is not GPIB programmable so all items in this manual concerning the IEEE 488 1 bus do not apply to the DM51 1 Tum the power OFF before inserting the DM5110 Otherwise arcing may occur at the rear interface connectors and damage may be done to the plug in circuitry Do NOT operate this product without COVers or panels installed Do NOT apply power to the plug in via a plug in extender Do NOT operate this product with distorted covers To avoid fire hazard only use the fuse specified in the parts list The maximum frontpanel input voltage is 1000 V peak so the input connectors and therefore all mainboard circuitry and part of the GPIB board may be floating up to 1000Volts Specifications DM 5110 DM 511 IEEE 488 1 Function Capability The built in IEEE 488 1 interface makes the DM 5110 instrument remotely programmable via the IEEE 488 1 bus as specified in IEEE Standard 488 1 1987 Standard Digital Interfac
58. emperature Probe EPE P6602 High Voltage Probe 010 0277 xx AF PODO srianan e ose Service Manual ccccccsssecsesscesenes 070 7479 xx Option Option 02 DMS110 or DM511 calibrated with a temperature probe P6602 Performance Conditions The characteristics in this specification are valid with the following conditions The instrument must have been calibrated at an ambient temperature between 22 C and 24 C The instrument must be in a non condensing environment whose limits are described under Environmental Allow 30 minutes warm up time for operation to the specified accuracy and 1 hour after exposure to or storage in high humidity condensing environment Specifications are valid only with those connections to the instrument that are required to verify each specification Items listed in the Performance Requirement column of the following tables are verified by completing the Performance Check in the Service Manual Items listed in the Supplemental Information column may not be verified in the manual they are explainatory notes for which no limits are specified Instruction Manual l s 7 l gt x S s i 5 R s Sp E S R 5 y E x E Common Mode dad Ratio 2 100 dB at DC With a 1 kQ unbalance Step Response Time Input Resistance Specification DM 5110 DM 5
59. feature related to the limits is the COM PARE mode where the display will show Hl CO and PASS LO is shown when the measurement is below the LO LIMIT HI is shown when the measurement is more than the H LIMIT In all other cases the display will show PASS During positive overrange the HI will blink during negative overrange the LO will blink Selecting the COMPARE mode can be achieved by first pushing the COMP key when in HOLD mode The display will show Comp The COMPARE mode can be turned ON or OFF with the UP and DOWN keys When the COM PARE mode is turned ON the last measurement that was made before the HOLD mode was entered will be recalculated and the display reading will be HI LO or PASS If the COMPARE mode is turned OFF the read ing will return to the normal decimal value The in strument is still in the HOLD mode indicated by the HOLD led Only after pressing RUN the instru ment will make new measurements in either the COMPARE mode or the normal mode During the COMPARE setting mode the following modes are available by pressing LOLIM to set LO LIMIT HILIM to set HI LIMIT BEEP to the BEEPER mode setting RUN continuous measurement Other keys do not react Operating Instructions DM 5110 DM 511 To change the range the 50 60Hz the 3 5D 4 5D or the GPIB settings the user has to leave the HOLD mode first IRUN
60. g 10V of 10 MQ x 100 mV 1 GQ 1012 Q A reading of less then 0 1 mV will indicate that the resistance under test has a higher tmpedance then 1000 Giga TRMS AC Voltage Measurements The instrument can make TRMS AC voltage meas urements up to to 500 V with a max resolution of 10 pV To measure AC volts proceed as follows 1 Select the AC volts function by pressing the ACV key 2 Select a range consistent with the expected volt age oruse autorange 3 Connect the signal to be measured to the LOW and VOLT Q TEMP input terminals 4 Observe the reading from the display The settling time is 0 3 sec to within 196 of change in reading This time specification is for analog cir cuitry to settle and does not include A D conversion time NOTE See TRMS Considerations Current Measurements DC or TRMS AC The DM 5110 511 can make DC or TRMS AC current measurements up to 2000 mA with a max resolution of 10 nA Use the following procedure to make current measurements 1 Select the DC current or AC current function by pressing the DCA or ACA key respectively 2 Select a range consistent with the expected cur rent or use autorange 2 18 3 Connect the signal to be measured to the LOW and mA input terminals 4 Observe the reading from the display dB Measurements The dB measurement mode enables you to com press a large range of measurements into a much smaller scope AC dB mea
61. gh energy circuit can cause severe personal injury or death If the meter is connected to a high energy circuit when set to a current range low resistance range or any other low impedance range the meter is virtu ally shorted Dangerous arcing can also result when the meter is Set to a voltage range if minimum voltage spacing is reduced or if maximum input voltages are exceeded The maximum input common mode voltage the volt age between the LOW V Q TEMP mA input and chassis ground is1000 V peak Exceeding this value may create a shock hazard Operating Instructions DM 5110 DM 511 Repackaging for Shipment It is recommended that the original carton and packing material be saved in the event it is necessary for the instrument to be reshipped to a Tektronix Service Center using a commercial transport carrier If the original material is unfit or not available then repack age the instrument using the following procedure jP Use a corrugated cardboard shipping carton having a test strength of at least 125 kilo and with an inside dimension of at least fifteen cm larger than the instrument dimensions If the instrument is going to be shipped to a Tektronix Service Center enclose the following information The owners address name phone number of a contact person Type option number and serial number of the instrument reason for returning and a com plete description of the service required Co
62. he ground connection is essential for safe operation i i Danger Arising from Loss of Ground Upon loss of the protective ground connection all accessible conductive parts including knobs and controls that may appear to be insulated can render an electrical shock Use the Proper Fuse To avoid fire hazard use only the fuse specified for the instrument in the instrument part list A replace ment fuse must meet the type voltage rating and current rating specifications for the fuse that it replaces GENERAL Do Not Operate in Explosive Atmospheres To avoid explosions do not operate this instrument in an atmosphere of explosive gasses Do Not Remove Covers or Panels To avoid personal injury the instrument covers or panels should only be removed by qualified service personnel Do not operate the instrument without covers and panels properly installed v E Instruction Manual 4 E F s DEP E gt k g N i 7 T 1 i z Section 1 Specifications DM 5110 DM 511 SPECIFICATION Introduction This section of the manual contains a general description of the Tektronix DM 5110 Programmable Digital Multimeter and the DM 511 Non Programmable Digital Multimeterand complete electrical mechanical physical and environmental specifications Standard accessories are also listed Instrument Description The Tektronix DM 5110 is a programmable six functio
63. he instrument rounds the argument up to the first full scale value and selects that specific range If the argument is above the highest range the in strument generates an execution error and asserts SHQ if RQS is on number lt NRF gt valid voltage input to the instru ment Ranges 200 mV 2 V 20 V 200 V 1000 V Instruction Manual Programming DM 5110 DIGit lt number gt _ Digital Resolution Setting or Query Type Setting Syntax DIGit lt number gt Query Syntax DIGit Query Response DIG 3 5 14 5 Examples Resolution Selected DIG 3 3 5 digit DIG 4 5 4 5 digit DIG 4 4 5 digit Discussion This command selects the conversion rate The argument 3 will set the resolution to 3 1 2 digits and the conversion rate to at least 25 readings per second An exception is made for the 20 MOhm range where the conversion rate is at least 11 readings per sec ond a The argument 4 will set the resolution to 4 1 2 digits and the conversion rate to at least 3 readings per second Number lt NRF gt Valid setting to the instru ment gt Programming DM 5110 DT TRIG OFf Device Trigger MEN Type Setting or Query Setting Syntax DT TRig OFf Query Sorilax DT DT TRIG OFF Query Response Discussion This command enables or disables the device trig ger function If Device Trigger is enabled the GET IEEE 488 1 interface message c
64. hen the limits are set in a function different from Ohms and the Beeper mode is turned on while measuring Ohms the limits will not return to the 0 0 settings In that special case the LOLIMIT will be set to 10 00 Q and the HILIMIT to 19 999 MQ This feature will only apply to keyboard commands while the instrument is not in the remote state ap plies to DM 5110 only From the power up condition the continuity mode can be entered by pushing OHMS HOLD BEEP UP and RUN In this setting the Beeper will sound when the measurement is less than 10 Q Instruction Manual e e k E eI z A ap r 5 E US X TAE g 0 00 Setting Limits LIMIT setting can be done in the following way Press the HOLD key followed by the LOLIM key to reach the LO LIMITsetting mode The display will show the current LO LIMIT value The limit value will be in the same range and func tion in which the instrument was set before entering the HOLD mode If limits were available in memory of a completely different function both limits will be reset to zero the very moment the limit setting mode is entered By using the UP and DOWN keys this value can be incremented or decremented The counting of the limit value will speed up as the user holds the UP or DOWN key The DM5110 will not allow the LO LIMIT above the HI LIMIT or the HILIMIT below the LO LIMIT When
65. hms both limits will be reset to their default value 0000 It is possible to set the LO and HI limits in two different ranges of the same function and use the COMPARE or BEEPER mode in autoranging 2 10 In DCV DCA dBV dBm and TEMP the limits can have positive or negative polarity In ACV ACA and OHMS the limits can only be positive Beeper Mode If the instrument is in the BEEPER mode indicated by the led the beeper will sound when the measurement is below the LO LIMIT or above the HI LIMIT An exception is made in the Ohms mode when the HI LIMIT is set at 19999 in the measure ment range and the instrument is in overrange Selecting the BEEPER mode can be done by first pushing the BEEP key when in HOLD mode The display will Show beep The Beeper mode can be switched on or off by pressing UP or DOWN key All the other keys except UP DOWN RUN COMP HILIM and LOLIM will be ignored The last measurement that was made before the HOLD mode was entered will be recalculated If the BEEPER mode was turned on and the value is beyond the limits the beeper will sound for a moment When the key sequence has been completed the instrument is still in the HOLD mode indicated by the HOLD led Only after pressing RUN the instrument will make new measurements Selection of a different measurement function will automatically turn off the BEEPER mode Continuity Measurement W
66. immediately accessible as one reads the markings or a hazard to property including the instrument itself DANGER indicates a personal injury hazard immediately as one reads the markings SYMBOLS In This Manual This symbol indicates where applicable cautionary or other information is to be found amp This symbol indicates static sensitive devices that are subject to be damaced by static electricity As Marked on Equipment 4 DANGER High voltage Protective ground earth terminal N ATTENTION Refer to manual instruction Manual iv 9 i DM 5110 DM 511 Safety Summary cont POWER CONDITIONS Use the Proper Power Cord Use only the power cord and connector as specified for the instrument Power Source Use the proper power source Before switching on make sure the instrument is set to the voltage of the power source This product is intended to operate from a power source that will not apply more than 250 Volts RMS between the supply connectors or between either supply connector and ground A protective ground connection by way of the grounding connector in the power cord is essential for safe operation Grounding the Product This product is grounded through the grounding connector of the power cord To avoid electrical shock plug the power cord into a properly wired receptacle before making any connections to the product input Or output terminals A protective ground connection by way of t
67. ine m 10V 196 10 a AC 0 Lore Full Wave Sine 10 V 3 2 410 0 CY UN Square 10V 1196 10 Rectified Square Wave 40V 11 0 1 Rectangular Pulse 10V 2 22K K x 100 10 K DzX Y c ELI PK Triangular Sawtooth 10V 496 10 0 Instruction Manual 2 21 Operating Instructions DM 5110 DM 511 DM 5110 511 Display Error Reporting Except the errors that can occur only during calibration procedures which are described in the service manual the following messages can be shown on the DM5110 511 display A constant blinking of the AUTO led This means thatthe internal calibration enable jumper is in the CAL position The instrument can now easily be recalibrated Contact a qualified service person The display shows EErr briefly This can happen in the following cases Atpowerup when the contents of the EEPROM are checked When an attempt is made to change an EEPROM related setting and reprogramming the EEPROM with the new setting fails 50 60 Hz or GPIB address and LF EOI set ting Send your DM to the nearest TEKTRONIX Service Center A constant blinking of the two least significant digit of the reading This means that the calibration settings as stored in EEPROM are improper and the DM5110 511 re turned to default calibration settings Although the instrument is still measuring the read ing is likely to be very inaccurate 2 Send your
68. ing or the wrong character Incorrect syntax 02 When the syntax of the argument is mone incorrect syntax 02 When the delimiter between arguments is the wrong character Incorrect syntax 02 When a command is missing one of its arguments 02 When the delimiter between commands is missing or the wrong character When a command cannot be executed while the instrument in local is under local control This includes all of the commands that control the settings of the instrument It does not include queries RQS ON USER ON 03 If a button is pressed while a command i is being set or executed l 03 Output data has been deleted The instrument cannot finish executing the message because it is waiting for the controller to read the data it has generated 03 This error occurs if you try to execute a command that conflicts with the current mode of operation 03 You will get this error if a numerical argument is out of the range of the instrument 03 o r a a Programming DM 5110 Table 3 3 cont Error Se Type ooo LEmrOmme len 206 GET ignored A GET bag been ignored for one of the following 03 reasons DT is off DM5110 is in local state A hardware update of the DM5110 is not finished 232 Beyond limit set or null capa bilities This error is returned if one of the arguments for the 03 LIMITS command is out of range or when the lo limit argument is above the hi limit
69. inted in lower case Instruction Manual l e 1 Programming DM 5110 GPIB Command Set Summary To control the DM5110 the following GPIB commands are defined ACA lt Amps ACV lt Volts gt BEEper ON BEEper OFf BEEper CALEN CAL CALC CMPr CALC OFf CALC DATA DBM lt dBm s gt DBV lt dBV s gt DCA lt Amp s gt DCV lt Volts gt DIGit Digits DIGit DT OFf DT TRIg DT ERR EVent FUNCT DCV FUNCT ACV FUNCT DCA FUNCT ACA FUNCT OHMS FUNCT DBM FUNCT DBV FUNCT TEMP FUNCT HELp ID INIt Instruction Manual Set to the AC current function Set to the AC voltage function Beeper mode on Beeper mode off Response from DM BEEP ON OFF Response CALEN ONIOFF internal cal jumper calibrate If not cal jumper in CAL then error 260 If calibration fails then error xxx Turns on the compare calculation function Turns off all calculator functions Response from DM CALC CMPR OFF Return the reading causing a monitor event Set to the dBM function Set to the dBV function Set to the DC current function Set to the DC Volts function Sets the measurement resolution of the DM 5110 Response from DM DIGI 3 5 4 5 Device Trigger off Device Trigger mode Response from DM DT OFF TRIG Hesponse from DM ERR NUMBER Response from DM EVENT NUMBER DC Voltage Measurement AC Voltage Measu
70. ion Manual r i E E i i i i i i 5 i I l i i MANUAL CHANGE INFORMATION At Tektronix we continually strive to keep up with latest electronic developments by adding circuit and component improvements to our instruments as soon as they are developed and tested Sometimes due to printing and shipping requirements we can t get these changes immediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections Sincethe change information sheets are carried in the manual until all changes are permanently entered some duplication may occur If no such change pages appear following this page your manual is correct as printed
71. irst waveform is an ordinary sine wave with a peak amplitude of 10 V The average value of the voltage is 6 37 V while its RMS value is 7 07 V Instruction Manual Operating Instructions DM 5110 DM 511 If we apply the 1 11 correction factor to the average reading you see that both meters will give the same reading resulting in no error in the average type meter reading The situation changes with the half wave rectified sine wave As before the peak value of the waveform is 10 V but the average value drops to 3 18 V The RMS value of this waveform is 3 86 V but the average responding meter will give a reading of 3 53 V 3 18 x 1 11 creating an error of 11 A similar situation exists for the rectified square wave which has an average value of 5 V and an RMS value of 5 0 V The average responding meter gives a TRMS read ing of 5 55 V 5 x 1 11 while the DM5110 511 gives a TRMS reading of 5 V Other waveform comparisons can be found in Table 2 3 Crest Factor The crest factor of a waveform is the ratio of its peak value to its RMS value So the crest factor specifies the dynamic range of a TRMS instrument For sinusoidal waveforms the crest is 1 414 For a symmetrical square wave the crest factor is t The crest factor of other waveforms will of course depend on the waveform in question because the ratio of peak to RMS value will vary For example the crest factor of a rectangular pulse is rela
72. lid ohms to the instrument This command will set the instrument to the OHMS function Also sets the range of the OHMS function The argument is used to determine the range If there is no argument the range is set to autorange starting in the highest range If the argument is valid the instrument rounds the argument up to the first full scale value and selects that specific range If the argument is above the highest range the in strument generates an execution error and asserts SRQ if RQS is on Ranges 200 Q 2 kQ 20 kQ 200 kQ 2 MQ 20 MQ 3 22 OPC ON OFf Operation Complete Type Setting or Query Setting Syntax OPC ON v Query Syntax OPC Query Response OPC ON OFF Discussion This command will enable or disable the reporting of an operation complete event If the function is ON and when a reading is com plete SRQ will be asserted if RQS is ON so that the controller can come and get the reading This will aliow the DM5110 to use a large delay time to get a reading and then report to the controller that the reading is ready to be transferred If RQS is OFF the event is reported using the EVENT or ERROR query instruction Manual 4 S lt A A c j us wath t Ua x s l m s s S S ss c Ra OVEr ON OFf Over Range ANNE En B Type Setting or Query Setting Syntax OVEr ON OFf Query Syntax OVEr Query Respons
73. mode is turned off in this manual ranging mode the DOWN key se lects a more sensitive range and the UP key will make the DM change to a larger range 2 7 Operating Instructions DM 5110 DM 511 Return to the autoranging mode is possible by push ing the UP and DOWN key simultaneously Overrange is indicated by blinking of the display At a reading of 20000 counts or more the display will show 19999 DC Voltage DCV In the DC Voltage DCV mode five ranges full scale are available 200 mV 2 V 20 V 200 V 1000 V DC Current DCA In the DC Current DCA mode five ranges full scale are available 200 pA 2 mA 20 mA 200 mA 2000 mA AC Voltage ACV In the AC Voltage ACV mode five ranges full scale true RMS are available 200 mV 2 V 20 V 200 V 500 V AC Current ACA ln the AC Current ACA mode five ranges full scale true RMS are available 200 pA 2 mA 20 mA 200 mA 2000 mA Resistance Q In the Resistance Q mode six ranges full scale are available 200 Q e kQ 20 kQ 200 kQ 2 MQ 20 MQ In the 2 kQ 200 kQ and 20 MQ range the output voltage at full scale is 2 Volts enabling the user to make diode measurements Therefore the diode symbol is on in these three ranges DBV or DBM dBV dBm The DBV and DBM ranges are recalculated versions ofthe ACV measurements Therefore the five ranges are also 200 mV 2 V 20 V 200 V and
74. mpletely wrap the instrument with polyethyl ene sheeting or equivalent to protect the out side finish and prevent entry of harmful sub stances into the instrument Cushion the instrument on all sides using eight cm of padding material or urethane foam tightly packed between the carton and the instrument Seal the carton with an industrial stapler or shipping tape Mark the address of the Tektronix Service Cen ter and also your own address on the shipping carton in two prominent locations instruction Manual 4 i s Be I U i E p E 900000000000G Instruction Manual Operating Instructions DM 5110 DM 511 000000 SSA S Fig 2 1 FrontPanelcontrols connectors and indicators 2 3 Operating Instructions DM 5110 DM 511 Controls Connectors and Indicators All controls connectors and indicators required for operation of the instruments are located on the front panel Fig 2 1 shows the location of all controls con nectors and indicators O O00 0000 Polarity LED readout indicating the polarity of the measurement Display 4 1 2 digit LED readout with properly positioned decimal point Q illuminated when units are in Ohms lluminated when units are in kiloOhms M2 Illuminated when units are in MegaOhms Beeper Mluminated when the instrument is in the Beeper mode Beeper sounds when the measurement is belo
75. n autoranging digital multimeter At 4 1 2 digit resolution the LED SEP can present 19 999 counts The DM5110 DM 511 can make the following basic measurements DC voltage measurements up to 1000 V with maximum resolution of 10 mV Resistance measurements up to 20 MQ with maximum resolution of 10 mQ TRMS AC voltage measurements up to 500 V with maximum resolution of 10 mV DC current measurements up to 2000 mA with maximum resolution of 10 nA TRMS AC current measurements up to 2000 mA with maximum resolution of 10 nA Temperature measurements from 62 to 240 C Tektronix P6602 temperature probe required All measurement functions can be set to either manual or auto ranging except for the temperature measurement having just one range Besides the led s showing the measured value 5 additional indicators show NULL HOLD and AUTO gt and the GPIB functions ADDR and REM The DM5110 DM 511 has the following functions Additional dBm and dBV ranges which are software calculated versions of the AC voltage ranges ANULL function to make measurements with an offset value AHOLD mode and a TRIGGER function ACOMPARE mode comparing the measurement with user selectable HI and LO LIMITS Instruction Manual ABEEPER mode which sounds the beeper when a measurement is beyond user selectable HI and LO LIMITS FASTand NORMAL mode measurement 3 5 and 4 5 digit 50 and 60 Hz measur
76. nly the fuse of correct type voltage rating and current rating as specified on the instrument and in the fuse replacing instructions below Internal Fuse Replacement DM 5110 511 A fuse is located on the left side of the instrument on the main board just behind the front panel As you face the front of the instrument The side cover can be loosened by turning the plastic screw at the end of the cover with a coin or screw driver The cover can be removed now To remove the fuse carefully pull it out of the fuseholder If the fuse is blown replace it with a 2A 250V 3 AG fast blow fuse See Part List in the Service Manual or contact your Tektronix Service Center After replacement reinstall the side cover Instruction Manual Cleaning Instructions This instrument should be cleaned as often as operation conditions require Accumulation of dirt on components may act as an insulating blanket and prevents efficient heat dissipation that can cause overheating and component breakdown Use a non residue type of cleaner preferable isopropyl alcohol or denatured ethyl alcohol Before using any other type of cleaner consult your Tektronix Service Center or representative Loose dust accumulated on the front can be removed by a soft cloth or a small brush Dirt that remains on the front can be removed with a soft cloth dampened with a mild detergent and water solution Do not use abrasive cleaners Exterior
77. nual you will find a descrip tion of the front panel operation of the DM 5110 See Fig 2 1 The name of keys that are to be pressed are sur rounded by square brackets wherever possible Example the Hold key would be written as HOLD Display The DM 5110 uses a 4 5 digit LED 7 segment dis play combined with 17 separate LED s The display can have the following information The current or last reading If an error situation occurs the display will show an error message for a short period of time If the ID button is pressed the GPIB address and terminator are displayed as described on page 2 9 If one of the set modes is selected the display will hold the value to be changed or other information prompts needed to complete the information transaction with the instrument GPIB Indicators There are two GPIB indicators on the front panel The remote indicator This indicates when the instrument is in remote state REM The addressed indicator This indicates when the instrument is being addressed to talk or listen ADDR FRONT PANEL CONTROLS General The front panel of the DM5110 has twelve soft keys that enable the operator to select functions and ranges of the DM An additional switch below the LOW and Volts Q TEMP jacks selects the FRONT or REAR connec tion of the LOW and Volts Ohms inputs Instruction Manual Operating Instructions DM 5110 DM 511
78. o to Chassis 60 V DC plus pk AC 1 4 E Instruction Manual y X a R s i u 5 I i Specification DM 5110 DM 511 Table 1 2 Cont Performance Requirements ALTERNATING VOLTAGE AC coupled True RMS 4 5 digit front and rear panel inputs For specifications of the 3 5 digit mode add 1 display count Characteristics Supplemental information Accuracy for 200 mV Automatic or manual ranging 2V 20 V 200 V and 500 V ranges 18 to 28 C 200 mV to 200V Range 20 Hz to 100 Hz 0 8 of reading 0 05 of F S Input gt 200 counts 100 Hz to 10kHz 0 3 of reading 0 05 of F S Input 200 counts 10 kHz to 20kHz 0 6 of reading 0 05 of F S Input 500 counts 20 kHz to 50kHz t 1 096 of reading 0 05 of F S input gt 2000 counts 500V range m i mE DR 20 Hz to 100 Hz 100 Hz to 10 kHz 0 8 of reading 0 05 of F S 0 396 of reading 0 05 of F S Input 50 counts Input 50 counts 10 kHz to 20 kHz 0 6 of reading 0 05 of F S Input 250 counts 20 kHz to 50 kHz 1 0 of reading 0 05 of F S Input 500 counts 010418 28 to 50 C 200 mV to 200V Range 20 Hz to 100 Hz 1 1 of reading 0 075 of F S Input gt 200 counts 100 Hz to 10 kHz 0 6 of reading 0 075 of F S Input gt 200 counts 10 kHz to 20 kHz 0 9 of reading 0 07596 of F S Input
79. o cated in the lower left corner of the front panel until the interconnecting jack disengages and the instru ment slides out Check that the instrument is fully inserted in the power module Instruction Manual 4 _ Power Up Sequence When powered on the DM 5110 511 s microproces sors perform a diagnostic routine self test to check the functionality of the EEPROM and the DM5110 tests the communication between the GPIB board microprocessor and the microprocessor of the main board The instrument will start in the DC Voltage autorang ing 4 5 digit accuracy mode The LO LIMIT and HI LIMIT are set to zero The NULL BEEPER and COMPARE mode are off If no EEPROM errors are found the microprocessor goes on to check the functionality of the other instru ment hardware If an EEPROM error is found an error code EErr is displayed in the front panel display for about a sec ond In that case the IEEE address is then set to 15 and the line frequency to 60 Hz If the internal microprocessor communication test fails the instrument reacts like a DM511 This can be checked by pressing the INST ID key a DM511 wili not show a GPIB address Also the internal diagnostic LED on the GPIB board of a DM5110 will not blink in a constant rate with a one second repetition time When errors like described above occur send your instrument to the nearest Tektronix Service Center Dangerous arcs of an explosive nature in a hi
80. oltage measurements 1 Select the DC volts function by pressing the DCV key 2 Select a range that will cover the expected volt age by pressing the UP or DOWN range key or press both keys simultaneously to use au torange 3 Connect the signal to be measured to the LOW and VOLT Q TEMP input terminals 4 Observe the reading from the display Resistance Measurements The DM 5110 511 can make resistance measure ments up to to 20 MQ with a max resolution of 10 mQ To make resistance measurements proceed as follows 1 Select the ohms function by pressing the Q key 2 Select a range consistent with the expected resistance or use autorange 3 Connect the resistance to the LOW and VOLT Q TEMP terminal of the instrument The maximum input vollage between the VOLT Q Temp and LO input terminals is 1000V peak Do not exceed these values or instrument damage may occur 4 Observe the reading from the display TABLE 2 2 RESISTANCE RANGES Instruction Manual Operating Instructions DM 5110 DM 511 NOTE l Typical open circuit voltage is 11 V GPIB range number shown in parentheses Sending Range 0 means Auto Range Table 2 2 shows the current output for each resis tance range It helps to shield a resistance gt 100 kQ to achieve a stable reading Place the resistance in a shielded enclosure and electrically connect the shield to the LO input termi nal of the instrument Diode
81. rement DC Current Measurement AC Current Measurement Ohms Measurement dBm Measurement i dBm Measurement Temperature Measurement Response from DM FUNCT DCVJACVIDCAJACAJOHMSIDBM DBVITEMP Returns all instrument commands Response from DM ID TEK DM5110 V81 1 FVx x Power on conditions FUNCT DCV RANGE 3 USER OFF MODE RUN DIGIT 4 5 RQS ON OPC OFF Programming DM 5110 GPIB Command Set Summary Cont LiMits high limit low limit LIMits LINEFreq MODE RUN MODE TRIG MODE MONitor ON MONitor OFf MONItor NULL Null value NULL OHMs Ohms OPC ON OPC OFf OPC OVEr ON OVEr OFf OVEr RANge Range number RANge HOS ON RQS OFf RQS SENd SET SOURce TEMP L lt C lt TEST USER ON USER OFf USERreq Set limit values Returns the state of the limit function Response from DM LINEF 50 60 RUN mode TRIG mode HOLD Response from DM MODE RUNITRIG Monitors the HIGH LOW limits and set SRQ is out of limits Turns off the monitor function Response from DM MONITOR ON OFF Turns on the null function and set the null value Returns the state of the null function Set to the Ohms function OPC reporting on OPC reporting off Response from DM OPC ONIOFF OVER reporting on OVER reporting off Response from DM OVER ON OFF Response from DM RANGE 0 6 Enable RQS Disable RQS Response from DM RQS ONIOFF Response READING
82. req Query Response LINEF 50 60 Discussion This command returns the setting of the line fre quency MODE RUN TRIg RUN TRIG Setting Type Setting or Query Setting Syntax MODE RUN TRig Query Syntax MODE Query Response MODE RUN TRIG Discussion The mode command will set the trigger run mode If MODE RUN is set readings are taken continu ously The TRIG argument sets the TRIGGERED mode In this mode a trigger occurs upon receipt of one of the following commands A SEND command T A Group Execute Trigger GET interface message Only if Device Trigger is en abled If over range or under range occurs or a more ac curate range is available while MODE TRIG is en abled and the instrument is in auto ranging it will change range and output the last stable reading This evidently increases the time it takes to make a measurement lf measuring speed is required selecting a proper range is advisable Instruction Manual t Y S U 9 e A P nd 7 lt M 3 X Query Syntax MONitor ON OFf Type Setting or Query Setting Syntax MONitor ON OFf MONitor Query Response MONITOR ON OFF Discussion The MONitor ON OFF command enables or dis ables the MONITOR SRQ With the MONITOR SRQ enabled the instrument saves the first measurement outside the limits set by the LIMITS command and generates an S
83. right decimal point lights if the LF EOI mes sage terminator is selected decima point does not light for EOL ONLY selection Releasing the key will make the DM5110 return to the original state The DM511 will not react to the INST ID switch HOLD Mode At power up the instrument will be measuring con stantly By pressing the HOLD key once the instrument stops measuring and displays the last measurement The HOLD led will show that the instrument is in the HOLD mode Pressing the HOLD key a second time will make the instrument return to the RUN mode secondary function RUN The HOLD mode is also used as an entry to the SECONDARY LEVEL When a key that is not defined as a secondary level is pressed the instrument will not react SECONDARY LEVEL FUNCTIONS Introduction Except for Trigger and the selection of the Tem perature function all secondary level keyboard func tions are settings In general the function keys give the ability to show settings on the display Changes to settings can only be made with the UP and DOWN keys Changing from one setting to another can only be done by leaving and re entering the HOLD mode with most of the functions This is done to prevent settings to be changed erroneously An exception is made for the BEEPER COMPARE LO LIMIT and HI LIMIT settings For ease of opera tion it is possible to change from one of the settings mentioned above to one of the
84. s when the level of the ne signal is nulied in a dB function Measurement of gain or attenuation in dB s can then directly be made at the output of the device under test To establish a baseline level by applying a level to the DM 5110 511 perform the following steps 1 Disable NULL if presently enabled by press ing the NULL key The NULL indicator will turn off 2 Select a function and range that is appropri ate for the anticipated measurement 3 Connect the desired baseline level to the input of the DM 5110 511 and note that level on the display 4 Press the NULL key The display will NULL and the NULL indicator will be enabled The previously displayed reading will be the stored baseline With NULL enabled a hazardous voltage baseline level 40V or more not displayed may be pres ent on the input terminals If not sure what is ap plied to the input assume that a hazardous voltage is present 5 Disconnect the stored signal from the input and connect the signal to be measured in its place Subsequent readings will be the differ ence between the stored value and the ap plied Pure Instruction Manual 3 x Li 9 A k T hd a l x vn DC Voltage Measurements The DM 5110 511 can be used to make DC voltage measurements up to to 1000 V with a maximum resolution of 10 pV Use the following procedure to make DC v
85. s and LF EOI settings Description Of The Syntax Diagrams The syntax in the section below is described in a BNF format The symbols used in the syntax defini tions are described below Symbol Description Defined element ols Is define as Explanation 3 Grouping of arguments and variables Do not include the braces in the mes sage i Optional data Do not include the data in the message 2 1 Exclusive OR A vertical line is used in a series of two or more units any one unit must be selected and sent as part of the command message Do not in clude the line in the message lt NRF gt ze lt NR1 gt lt NR2 gt lt NR3 gt Any of the three number types Is used by the DM 5110 to accept or transmit a number Numbers may be NR1 integer NR2 decimal and NR3 with exponent format Symbols not enclosed by are terminals or liter als Spaces in a definition are for formatting and are not part of the definition DM51 10 Detailed Command Set Each DM 5110 command like those in all TM 5000 instruments begins with a header which is a word or acronym that describes the function implemented Following the header many commands require an argument which is a word or number that specifies the desired state for the function The commands are presented alphabetically on the following pages When abbreviation of the header is allowed the op tional part is pr
86. sage that specifies what it should output in this case acquisition instruments counters and multimeters return a measurement if one is ready If no measurement is ready they return a single byte message with all bits equal to 1 HEX FF with message terminator as the talked with nothing to say TWNTS other TM 5000 in struments will return only this message Instrument Response to IEEE 488 1 interface Messages Interface messages and their effects on the instru ment s interface functions are defined in IEEE Stan dard 488 1 1987 Abbreviations from the standard are used in this discussion which describes the effects of Interface messages on instrument operation UNL Unlisten UNT Untalk When the UNL command is received the instru ment s listener function goes to its idle state unad dressed In the idle state the instrument will not accept in strument commands from the GPIB The talker function goes to its idle state when the instrument receives the UNT command in this state the instrument cannot output data via the GPIB Instruction Manual e S gt p as HER EN EE BE aum a SE uua x 9 N w i s The ADDRH light is off when both the talker and listener functions are idle If the instrument is either talk addressed or listen addressed the light is on DCL Device Clear This message restarts device dependent message processing
87. scribed under Remote Local Func tions The instrument responds to GTL only if it is listen addressed m LLO Local Lockout This command causes the instrument to go to the Local With Lockout State LWLS or the Remote With Lockout State RWLS if REN is asserted See Remote Local Function Operation REN Remote Enable If REN is true the instrument goes to a remote state from LOCS to REMS or from LWLS to RWLS when its listen address is received REN false causes a transition from any state to LOCS the instrument stays in LOCS as long as REN is false IFC Interface Clear Pulsing IFC is the equivalent of sending UNT UNL SPD The message buffer will NOT be cleared so that input or output operations can be continued with no loss of data Digitally signed by http www aa4df com Programming DM 5110 ASCI amp GPIB CODE CHART a eda ee 1 NUMBERS SYMBOLS LOWER CASE 40 O 0 160 46 BUD 0 NUL 20 DLE ep 7 0 16 100 0 120 p 16 TY o 9 10 16 20 82 90 48 40 64 50 DC1 Q 5 215 o L i w x 141 1 161 17 o 2p he4 97 71 113 188 142 2 162 18 R r 82 les 98 72 114 19 f 143 al 163 19 S C S 838663 X 99 73 115 20 144 4 164 20 84 ll 64 100 74 116 218 145 5 165 z e u 85 ll e5 101 75 117 225 146 6 166 22 v 66 102 76 118 147 7 167 23 W 67 103 77 119 150 8 170 24 1000 BS CAN 8 x 72 68 104 78 120 9 131 151 9 171 25 1001 l i y
88. strument If CALEN OFF is returned then the CAL command will cause an error if it is sent error 260 Programming DM 5110 POWER ON INITIAL CONDITIONS At power up the DM5110 will be set in the following mode Primary address LF EOI setting as stored in EEPROM The conversion rate is set to 4 5 digit in the RUN mode The function will start at the 1000 Volt DC range autoranging The instrument will be in the local state with the fol lowing settings BEEPER OFF CALC OFF DIGIT 4 5 DT OFF FUNC DCV LIMITS 0 0 MODE RUN MONITOR OFF NULL 0 OPC OFF OVER OFF RANGE 0 RQS ON USER OFF STATUS AND ERROR REPORTING Through the Service Request function defined in the IEEE 488 1 standard the instrument may alert the instrument that it needs service This service request is also a means of indicating that an event a change in status or an error has occured To service a request the controller performs a Serial Poll in response the instrument returns a Status Byte STB which indicates whether it was request ing service or not The STB can also provide a limited amount of infor mation about the request The format of the information is structured as shown in Fig 3 2 Because the STB conveys limited information about an event the events are divided in classes the Status Byte reports the class The classes of events are defined as follows COMM
89. surements can be made with the in strument in the dBV or dBm function The relation ship between dB and voltage can be expressed by the following equation Vin dB 20 log Vref dBV is defined as decibels above or below a 1 V reference The instrument will read 00 00 dB when 1 V is ap plied to the input 00 00 dBm equals 1 mWatt in a 600 Ohms load 0 775 V RMS Reference levels other than 1 V and 0 775 V can be established using the NULL feature This simply consists of applying a signal to the instrument and pressing the NULL key The suppressed level is the dB reference 0 dB point Another method is to enter the desired reference value over the GPIB bus DM5110 only The following procedure explains how to use the NULL feature to establish a reference 1 Select the dBm or dBV function by pressing the dBm or dBV key respectively 2 Select a range consistent with the expected volt age signal or use autorange 3 Apply a voltage signal that is to be used as the dB reference to the input of the DM 5110 4 Press the NULL key The NULL indicator will turn on and the display will null The reference is now whatever the ap plied signal is 5 Disconnect the signal from the instrument 6 Connect the signal to be measured to the input of the DM 5110 511 7 Take the dB reading from the display instruction Manual x ul
90. t return to the original state Secondary level Pressing the key sets the instrument in the GPIB settings mode DCV Primary level Pressing the key sets the instrument in the DC voltage mode Secondary level Pressing the key triggers the instrument DCA Primary level Pressing the key sets the instrument in the DC current function Secondary level Pressing the key will set the instrument in the 50 or 60 Hz setting mode ACA Primary level Pressing the key sets the instrument in the AC current function Secondary level Pressing the key sets the instrument in the 3 5 or 4 5 digit setting mode ACV Primary level Pressing the key sets the instrument in the AC voltage function Secondary level Pressing the key sets the instrument in the Beeper setting mode Instruction Manual Operating Instructions DM 5110 DM 511 OHMS Primary level Pressing the key sets the instrument in the Ohms function Secondary level Pressing the key sets the instrument in the Temperature function 65 NULL Primary level Pressing the key turns the NULL mode on or off Secondary level Pressing the key sets the instrument in the LO LIMit setting mode dBm Primary level Pressing the key sets the instrument in the dBm function Secondary level Pressing the key sets the instrument in the COMPare setting mode 27 dev Primary level Pressing the key sets the instrument in the dBV functon S
91. ted to its duty cycle as the duty cycle de creases the crest factor increases The DM5110 511 has a maximum crest factor of 3 which means the instrument will give accurate TRMS measurements of rectangular waveforms with duty cycles as low as 10 Operating Instructions DM 5110 DM 511 dB Applications Measuring Circuit Gain Loss Any point in a circuit can be established as the 0 dB point Measurements in that circuit then are refer enced to that point and expressed in terms of gain dB or loss dB To set the null dB point proceed as follows 1 Set the DM 5110 511 in dBm or dBV mode 2 Connect the DM 5110 511 to the desired location in the circuit 3 Press the NULL key The display will read O dB 4 Gain loss measurements can now be made referenced to the 0 dB point Measuring Bandwidth The DM 5110 511 can be used to determine the bandwidth of an amplifier as follows 1 Connect a signal generator and a frequency counter to the input of the amplifier 2 Set the DM 5110 511 to dBm or dBV and au torange 3 Connect the DM 5110 511 to the load of the amplifier 4 Adjust the frequency of the signal generator until a peak voltage reading is measured on the DMS5110 511 This is the center frequency 5 Press the NULL key The 0 dB point is now established 6 Increase the frequency input until the DM5110 511 reads 3 00 dB The frequency measured on the frequency counter is the high en
92. trument accepts the following kinds of num bers for any of the numeric arguments Signed or unsigned integers including 0 and 0 Unsigned integers are interpreted as positive Example 1 2 1 10 Signed or unsigned decimal numbers Un signed decimal numbers are interpreted to be positive Examples 3 2 45 0 1 2 Floating point numbers expressed in scientific notation Examples 1 0E 6 1 0E 2 1 E 2 0 01E 0 The largest acceptable number for an argument is 99999E 99 Message Protocol As the instrument receives a message it is stored in the input Buffer processed and executed Processing a message consists of decoding com mand detecting delimiters and checking syntax For setting commands the instrument then stores the indicated changes in the Pending Settings Buffer If an error is detected during processing the instru ment asserts SRQ ignores the remainder of the message and resets the Pending Settings Buffer Resetting the Pending Settings Buffer avoids unde sirable states that could occur if some setting com mands are executed while others in the same mes sage are not Executing a message consists of performing the ac tions specified by its command s For setting commands this involves updating the in strument settings and stores these updates in the Current Settings Buffer The setting commands are executed in groups that is a series of setting commands is pro
93. ts The country of manuracture i iS identified as follows B000000 Tektronix Inc Beaverton Oregon USA 3100000 Tektronix Guernsey Ltd Channel Islands E200000 Tektronix United Kingdom Ltd London J300000 Sony Tektronix Japan H700000 Tektronix Holland NV Heerenveen The Netherlands u TABLE OF CONTENTS Page LIST OF ILLUSTRATIONS eee iii LIST OF TABLES eere m OPERATORS SAFETY SUMMARY iv Section 1 SPECIFICATION introduction ics eec a ric rivi ee Eben 1 1 Instrument Description 1 1 IEEE 488 1 Function Capability 1 2 IEEE 488 1 interface Function Subsets 1 2 IEEE 488 1 Bus Address and Terminator 1 2 Accessories and Options 1 2 Performance Conditions 1 2 Electrical Characteristics 1 3 Environmental Characteristics 1 13 Section 2 OPERATING INSTRUCTIONS giigerolUieri o re 2 1 Installation and Removal 2 1 Power Up Sequence eese 2 1 Repackaging for Shipment 2 2 Controls Connectors and indicators 2 4 Front Panel Operation es 2 7 Front Panel Controls eee 2 7 Primary Level Functions
94. unction The V or m led is blanked indicating that a relative measurement is made After selecting the NULL mode each range can be selected even autoranging NOTE The absolute null value will be subtracted from the actual measurement Blinking of the display meant to show overrange is still determined by the actual measurement value The NULL mode will not be accepted when the in strument is in overrange condition The display will briefly show 7 When the present reading pushing the NULL key is zero the NULL function will not react If the result of the NULL function calculation ex ceeds the 4 5 digit capabilities of that specific range the decimal point will be shifted one position to the right and the least significant digit will no longer be shown in the display Example Suppose the NULL mode was set in the 2000 0 mA DC Current range at 1900 0 mA When the same current in the opposite direction is measured 1900 0 the display will show 3800 mA During the NULL mode the HOLD and TRIG mode will still function Any key except UP DOWN ID or HOLD will make the instrument leave the NULL mode and the null value will be lost Instruction Manual Operating Instructions DM 5110 DM 511 INST ID Pressing the INST ID key will make the DM show it s primary address on the display and if USER has been enabled generate a Service Request aben on the GPIB The far
95. urs and 6 the CAL jumper is in the normal position DEVICE STATUS 700 Below limits If the DM5110 is set in MONITOR ON this error is 6 generated if a measurement is above the HI LIMIT 703 Above limits If the DM5110 is set in MONITOR ON this error is 6 generated if a measurement is below the LO LIMIT Instruction Manual 3 35 CE i i i WARNING THE FOLLOWING SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY TO AVOID PERSONAL INJURY DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO REFER TO OPERATORS SAFETY SUMMARY AND SERVICE SAFETY SUMMARY PRIOR TO PERFORMING ANY SERVICE X 9 9 9 9 9 9 79 9 9 79 9 729 9 x Section 4 Maintenance DM 5110 DM 511 MAINTENANCE introduction This section of the manual provides information on changing the internal fuse and also on general maintenance of the DM5110 DM511 Recalibration Adjustment To assure accurate measurements check the calibration of the instrument every 6 months or after 1000 hours of use whichever occurs first Adjustments of internal circuits to specified accuracy and or calibration check should be performed at the factory or a Tektronix Service Center Before returning the instrument for any servicing please contact your nearest Tektronix Service Center To avoid fire hazard use o
96. w the LO limit or above the HI limit Illuminated when units are in pA mA illuminated when units are in mA V Illuminated when units are in Volts or combined with dB for dBV Illuminated when units are in mVolts 10 3 or combined with dB for dBm OLO dB Illuminated when units are in deciBells c illuminated when units are in degrees Celsius Diode Illuminated in 2 kQ 200 kQ and 20 MQ ranges indicating diode measurement capabilitity in these ranges Sinewave Illuminated in AC measuring modes Up Primary level Selects the next higher measurement range Pushing UP and DOWN simulta neously selects autoranging Secondary level Changing settings Down Primary level Selects the next lower measurement range Pushing UP and DOWN simulta i neously selects autoranging Secondary level Changing settings HOLD Primary level Pressing the key sets the instrument in the HOLD mode The HOLD led is on Also indicating that the secondary func tions functions can be used Secondary level Pressing the key sets the instrument in the RUN mode and returns the keyboard functions to the primary level Instruction Manual e 2 7 2 i 1 S kaa PE j AEN SEE VEU 19 INST ID Primary level Pressing the key makes the instrument show his primary address on the display Releasing the key makes the instrumen
97. z to 10kHz 0 to 18 28 to 50 C 20 Hz to 100 Hz m 196 of reading 40 075 of F S Input gt 200 counts 100 Hz to 10kHz 0 6 of reading 0 075 of F S input gt 200 counts Crest Factor 3 o 1 3 1 for 0 196 add error 0 3 sec to 1 of step Step Response Time Input Impedance Range Approx Imp 200 pA 1 0 KQ 2 mA 100 0 Q 20 mA 102 Q 200 mA 1 2 Q 2000 mA 0 26 Q Maximum cen Circuit Input Voltage mA to LOW 250 V peak Maximum Input Current 2 A any range Maximum floating HS mA to GND 1000V peak LOW to GND 1000V peak Maximum Resolution 10 nA 1 10 LIP 7 Instruction Manual gt E g i i Characteristics For spe Temperature range Instrument Calibrated to P6602 probe Any P6602 Probe P6602 Probe calibrated to instrument Any P6602 Probe instruction Manual gt Specification DM 5110 DM 511 Table 1 2 Cont Performance Requirements Supplemental information TEMPERATURE 4 5 digit front pane inputs cifications of the 3 5 digit mode add 1 display count 62 C to 240 C 18 to 28 C ambient 0 6 C from 62 C to 150 C t 1 6 C from 150 C to 240 C 3 5 C from 62 C to 4150 G 6 C from 150 C to 240 C 0 to 18 28 to 50 C ambient 1 5 C from 62 C to 150 C 2 5 C from 150 C to 240 C 4 5 C from 62 C to

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