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MC140 User Manual pdf

1. dPF is the uncertainty of set sing Generation of frequency The multifunction calibrator can generate several different voltage shapes with exact frequency amplitude and duty cycle The output signal is present at BNC coaxial connector FREQ located at the front panel The signal is not present at any other output terminal There are two frequency generation modes The first mode PWM allows the generation of squarewave output signal with calibrated amplitude frequency and duty cycle Frequency range is up to 10 kHz The second mode HF also provides squarewave output signal with very steep rising edge typically less than 3 ns PWM mode Frequency range 0 1 Hz to 100 kHz Voltage range 1 mV to 10 Vpp Signal shapes squarewave negative PWM NEG symmetrical PWM SYM positive PWM POS HF mode Frequency range 0 1 Hz to 20 MHz Voltage range 5 Vok pk 0 10 20 30 dB Signal shapes symmetrical squarewave PWM mode can be used to calibrate the input sensitivity of oscilloscopes at frequencies up to 10 kHz HF mode can be used to calibrate the time base of oscilloscopes To switch between the modes keep pressing F direct mode button The display includes the symbols for currently selected mode PWM or HF Control in the frequency mode e Press F direct mode button The calibrator switches to PWM mode If HF mode is desired press F button once more The main data on the display is the frequency The displa
2. If query is sent MC140 returns the set value of nominal resistance using standard exponential format Example 20 5Q is returned as 2 050000e 001 MEAS CONF TEMP THER TYPE lt CPD gt B E J K N R S T This command selects the function TC of internal multimeter sets the type of thermocouple and switches the multimeter on Example to set the multimeter to thermocouple R measurement mode MEAS CONF TEMP THER TYPE R lt cr gt If query is sent MC140 returns the set type of thermocouple B E J K N R S T MEAS CONF TEMP THER RJUNction lt DNPD gt This command selects the function TC of internal multimeter sets the temperature of cold junction of selected thermocouple and switches the multimeter on lt DNPD gt Represents the temperature expressed in the unit set by the UNIT command In Technical Data chapter there is list of acceptable ranges Example to set the temperature of cold end of thermocouple to 25 C MEAS CONF TEMP THER RJUN 25 lt cr gt If query is sent MC140 returns the set temperature using standard exponential format Example 20 5 C is returned as 2 050000e 001 MEAS CONF SGS VOLT lt DNPD gt This command selects the function SGS of internal multimeter sets the supply voltage of sensor and switches the multimeter on lt DNPD gt Represents the supply voltage in V OV to 20V can be set Example to set the multimeter to SGS measurement mode and power sup
3. 2 000000 A 0 05 0 005 2 00000 A 10 00000 A 0 05 0 010 DC POWER uncertainty Uncertainty of DC power can be calculated from the following formula dP V dU dI 0 017 where dP is uncertainty of output power dU is uncertainty of set voltage dI is uncertainty of set current DC ENERGY uncertainty Depends on voltage current time values The best uncertainty is 0 016 ACV uncertainty See table of ACV uncertainty ACI uncertainty 3 3 3 2 00000 mA 20 00000 mA 0 05 0 010 20 0000 mA 200 0000 mA 0 05 0 005 0 200000 mA 2 000000 A 0 05 0 005 2 00000 A 10 00000 A 0 05 0 010 15 PHASE uncertainty frequency range Hz phase uncertainty dg 40 000 200 000 200 001 400 000 AC POWER uncertainty Uncertainty of AC power can be calculated from the following formula for active power dP V dU dI dPF 0 037 for reactive power dP V dU dI dPF 4 0 03 for apparent power dP V dU dP 0 03 where dP is uncertainty of power dU is uncertainty of set voltage dI is uncertainty of set current dPF is uncertainty of power factor cosp For calculation of dPF is valid following formula dPF 1 cos p dg cos g 100 where is set phase shift between voltage and current outputs d is uncertainty of set phase shift in table above dPF is uncertainty of of sing For dPF is valid following formula
4. User Manual v35 MC 140 Multifunction Calibrator POWERTEK The multifunction calibrator allows many other less frequently used parameters to be set Setup menu is used to set these parameters Setup menu is opened by pressing SETUP display button If output terminals are connected they will be disconnected and the following display appears 18 18 2844 12 52 SETUP MENU Coil x58 Temp scale Temp unit Phase unit Output 146 41 Use A or v cursor button or the knob of the potentiometer to browse the menu options Active option is always inverted and when changed the descriptions of display buttons change as well Display buttons show how the respective parameter can be set Each parameter can be changed after the knob of the potentiometer is pressed Press EXIT display button twice to save the parameters when the setting is completed New settings are retained when the calibrator is switched off Setup menu offers the following options 1 Coilx50 xx ON OFF This parameter can be set on when 50 turn current coil is going to be used for clamp ammeter calibration The coil multiplies the output current OFF is set by the manufacturer 2 GNDU xx ON OFF This parameter connects Lo terminal to GND In practice this means that Lo terminal is grounded By pressing the display buttons the terminal can be grounded or ungrounded ON is set by the manufacturer output terminal 1s grounded 3 GNDI xx ON OFF This parame
5. dPF 1 sin p dg sin p 100 User Manual POWERTEK MC 140 Multifunction Calibrator Example Set parameters U 100 V I 10 A cos 0 5 f 50 Hz displayed value of active power in W Output voltage uncertainty dU 0 025 value 0 010 range 0 045 Output current uncertainty dI 0 05 value 0 01 range 0 06 Uncertainty due the set phase shift PF 0 5 corresponds phase shift 60 dPF 1 cos 60 0 15 cos 60 100 1 0 4977 0 5 100 0 45 Output power uncertainty dP V 0 045 0 067 0 45 0 037 0 46 POWER FACTOR PF range 1 0 to 1 0 PF uncertainty can be calculated for any set value of output voltage current and PF from following formula dPF 1 cos tdgycos g 100 where issetphase shift between voltage and current d is uncertainty of set phase shift form the above table AC ENERGY uncertainty It depends on set value of voltage current time and PF The best uncertainty is 0 07 for apparent energy Frequency summary range 0 1 Hz to 20 MHz frequency uncertainty 0 005 frequency resolution 6 digit minimum step 0 001Hz output BNC connector located on the front panel modes PWM square wave output with calibrated duty cycle ratio frequency and amplitude HF square wave output with calibrated frequency and amplitude Mode PWM frequency range 0 1 Hz to 100 kHz voltage range 1 mV to 10 V duty cycle ratio range 0 01 to
6. chapter defines the limits of functions and ranges If 140 41 cable adapter is used for simultaneous calibration and OUTPUT 140 41 option is set to AUX the following generation measurement ranges can be set Generator DCV 0 20 V DCI 0 20 mA Resistance 0 50 MQ RTD sensor simulation Pt 1 385 Pt 1 392 Ni TC sensor simulation K N R S B J T E Meter DCV mVDC DCI Resistance Frequency User Manual v35 MC 140 Multifunction Calibrator POWERTEK If 140 41 cable adapter is used for simultaneous calibration and OUTPUT 140 41 option is set to PANEL the following generation measurement ranges can be set Generator DC AC V 0 1000 V DC ACI 0 20A Resistance 0 50 MQ RTD sensor simulation Pt 1 385 Pt 1 392 Ni TC sensor simulation K N R S B J T E Feguency 0 1 20 MHz Power Energy 0 2 240 V 0 2 20 A Meter DCV 0 12V MVDC 0 2V DCI 0 25 mA Resistance 0 2kQ Frequency 1 15 kHz When 140 41 cable adapter is connected only harmonic signals are generated SHAPE function is inactive Use of Option 40 60 cable adapter Opt 40 cable supports simultaneous mode measurement of voltage up to 12 V current up to 25 mA and frequency up to 15 kHz Opt 60 cable is designed for four wire measurement of resistance or temperature using resistance temperature sensors The generation ranges are
7. lt DO O O O O O o o 20 V AC Basic range with linearity test Function Range Frequency Hz Deviation allowed value 1000 0 075 1000 050 1000 042 1000 037 1000 035 1000 033 1000 032 1000 031 1000 031 1000 030 V AC 20 V AC 20 V AC 20 V AC 20 V AC 20 V AC 20 V AC 20 V AC 20 V AC 20 V AC 20 Table III o o o o o jo o jo o o lt lt lt I lt lt lt lt lt o e o o o o o o o o O Oo j Oo Oo Oo oj o o jo User Manual POWERTEK MC 140 Multifunction Calibrator AC voltage test Function Frequency Hz Deviation allowed value V AC 1000 0 358 V AC 1000 142 V AC 4 1000 030 V AC m 50 030 V AC R x 120 030 V AC i 10000 030 V AC M 20000 082 V AC 3 50000 082 V AC S S 1000 036 V AC k 120 057 Table IV O Oo j o Oo o oj o oj jo 200 mA DC Basic range with linearity test Function Range Value A Frequency Hz Deviation allowed value 0 040 025 020 018 016 015 014 014 013 013 040 025 020 018 016 015 014 014 013 013 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 O o o o o ojo ojo CLO O O
8. 4 terminals Limitation of output signals Calibrator s output signals are not limited in any way and can be fully used Calibrator s output signals are available only at the terminals located at the front panel Calibrator s output signals are not limited in any way and can be fully used Calibrator s output signals are available only at the terminals located at the cable adapter Calibrator s output signals are available only at the terminals located at the cable adapter ranges are limited to DC voltage up to 20 V DC current up to 20 mA four wire resistance measurement Calibrator s output signals are only available at the terminals located at the front panel in full ranges and can be fully used Calibrator s output signals are not available at the terminals of the cable adapter Calibrator s output signals are not limited in any way and can be fully used Calibrator s output signals are only available on the terminals located at the front panel Calibrator s output signals are not limited in any way and can be fully used Calibrator s output signals are only available at the terminals located at the front panel Following output signals can be set only resistance in four wire connection resistance temperature sensor simulation in four wire connection Output signals are available on adapter Option 70 only each state has its limitation listed in the tab
9. 7 Output 140 41 xx AUX PANEL This parameter allows the output terminals to be selected AUX means that the output signals are present only at the cable adapter s terminals PANEL means that the output signals are present only at the front panel 8 Meter average xx UP DOWN Displays the number of measurements taken before the average value of build in multimeter is displayed integration constant UP DOWN display buttons can be used to select a value in the range of 1 to 20 The higher the value the longer the calibrator needs to measure a value but displayed value is more stable If 20 is set one measurement takes approximately 2 5 s 9 Interface xx GPIB RS232 Displays the type of interface used to control the calibrator from a PC By pressing GPIB or RS232 buttons the respective type can be selected The calibrator can be remotely controlled only using the selected interface 10 GPIB address xx UP DOWN Displays the calibrator s address at the GPIB bus UP DOWN display buttons can be used to select any valid GBIP address in the range of 00 to 30 The address 02 is set by the manufacturer 11 RS232 baud rate xx UP DOWN Indicates the communication speed of RS232 bus UP DOWN display buttons can be used to select 150 300 600 1200 2400 4800 9600 19200 Perfect communication with the PC requires equal values set at the PC and the calibrator 12 Handshake xx OF F Xon Xoff Indicates the co
10. AUX ADAP This command can be used to find out what type of cable adapter is connected to AUXILIARY connector If query is sent MC140 returns the type of cable adapter connected to AUXILIARY connector NONE CA14001 CA14041 CA14040 CA14060 CA5 CA6 CA7 Example AUX ADAP lt cr gt the calibrator returns NONE when no cable adapter is connected or the type of cable adapter connected to AUXILIARY connector SOUR FREQ CW lt DNPD gt This command sets the frequency being generated Examples AC voltage frequency FUNC SIN VOLT lt DNPD gt FREQ lt DNPD gt lt cr gt AC current frequency FUNC SIN CURR lt DNPD gt FREQ lt DNPD gt lt cr gt Digital frequency FUNC SQU FREQ lt DNPD gt lt cr gt lt DNPD gt Represents the frequency in Hz Technical Data chapter lists the acceptable ranges which depend on the selected function mode If query is sent MC140 returns the set value of the current using standard exponential format Example 20 5kHz is returned as 2 050000e 004 SOUR FREQ DUTY lt DNPD gt This command sets the duty cycle of PULP PULS PULN PWMP PWMS PWMN function modes Examples To set symmetrical squarewave voltage signal 10V with defined duty cycle VOLT 10 0 FUNC PULS FREQ DUTY lt DNPD gt lt cr gt User Manual POWERTEK MC 140 Multifunction Calibrator To set digital frequency POS signal with defined duty cycle
11. Enter the calibration code and press ENTER default calibration code is 00000 DC voltage ranges calibration a Connect the voltage input terminals of the multimeter to the Hi Lo output terminals of the calibrator b Select VOLTAGE DC from the calibration menu and confirm by pressing SELECT button Switch MC 140 output terminals ON c Follow the instructions provided on the calibrator s display and the DCU table to adjust the calibrator s output in the calibration points d To adjust the calibrator s output in the calibration points press SELECT button and use lt gt v A cursor buttons or potentiometer to adjust output voltage Confirm correctly set value by pressing WRITE display button If you want to skip the calibration point whose calibration you have already entered press SKIP display button Switch output terminals OFF AC voltage ranges calibration a Select VOLTAGE AC from the calibration menu and confirm by pressing SELECT button Switch MC 140 output terminals ON b Follow the instructions provided on the calibrator s display and the ACU table to adjust the calibrator s output in the calibration points User Manual POWERTEK MC 140 Multifunction Calibrator c d To adjust the calibrator s output in the calibration points press SELECT button and use lt gt v A cursor buttons or potentiometer to adjust the output voltage Confirm correctly set value by pressing WRITE
12. FUNC PWMP FREQ DUTY lt DNPD gt lt cr gt lt DNPD gt Represents the duty cycle in percent 0 to 100 can be set If query is sent MC140 returns the set value of the duty cycle using standard exponential format Example 25 is returned as 2 50000e 001 SOUR FREQ VOLT lt DNPD gt This command sets the amplitude of PWMP PWMS PWMN signals Examples To set the amplitude of PWMP digital frequency signal FUNC PWMP FREQ VOLT lt DNPD gt lt cr gt lt DNPD gt Represents the voltage in Volts 0 000 to 10 000 V can be set If query is sent MC140 returns the set value of the amplitude using standard exponential format Example 2 05V is returned as 2 05000e 000 SOUR FREQ ATTE lt DNPD gt This command sets the attenuation of digital SQU frequency signal Examples To set the attenuation of high frequency signal FUNC SQU FREQ ATTE lt DNPD gt lt cr gt lt DNPD gt Represents the attenuation in decibels 0 to 30 dB can be set in 10 dB increments If query is sent MC140 returns the set value of the attenuation using standard exponential format Example 20 dB is returned as 2 00000e 001 SOUR TEMP UNIT lt CPD gt C CEL K This command sets the unit of measurement of temperature e Cor CEL sets Centigrade K sets Kelvin The unit of measurement remains valid after the calibrator is switched off If query is sent MC140 returns the set unit of measuremen
13. OojOojOojOo OojOojOo O 4W 5 000000e 7 DC 500 Table X Capacitance test Function Value F Frequency Hz Deviation allowed value CAP 00000e 09 1000 2 000 CAP 000000e 8 1000 500 CAP 000000e 7 1000 500 CAP 000000e 6 500 500 CAP 000000e 5 300 500 CAP 000000e 5 300 000 Table XI User Manual POWERTEK MC 140 Multifunction Calibrator Frequency test Function Value Hz Frequency Hz Deviation allowed value FREQ 1000 0 0 005 Table XII Multimeter test Function Value Hz Freguency Hz Deviation allowed value FO 1000 0 Hz 0 005 DC 10 0 V 913 DC 10 0 V 013 DC 0 019 A 017 DC 0 019 A 017 DC 0 019 V 057 DC 0 019 V 057 DC 0 19 V 024 DC sd 19V 024 DC 1 ORV 020 DC Oe V 020 O 4W 100 0 Ohm 030 O 4W 1000 0 Ohm 021 Table XIII ClO Oo O OoO OJO OJ O OJ O O User Manual v35 MC 140 Multifunction Calibrator POWERTEK System control The calibrator includes standardized IEEE 488 bus and RS232 serial line System connectors are located at the rear panel For the remote control to work properly bus parameters must be set in the system menu For IEEE 488 bus address is important 0 to 30 setting range
14. Overload 2V Overload 20V Overload 200V Overload I output High temperature Overload RC FBK error OUTPUT must be in OFF state Interface error Bad command Bad communication Over range Bad calib code Time warm up Cable adapter must be off Use cable adapter Internal RxD timeout Internal communication Calibrator is not ready Value too large Value too small Deviation too large Unable Unable polarity Unable DC AC Current timeout Not allowed on AUX output User Manual v35 MC 140 Multifunction Calibrator label description troubleshooting error 2V range overloaded Output current is too high Increase load resistance 20 V range overloaded 200 1000 V ranges overloaded Output current is too high Increase load resistance Output current is too high Increase load resistance Current output overloaded Voltage on the load is too high Decrease load resistance Too high internal temperature Output stages are overloaded Do not use ranges 200V 1000V or 20 A for at least 10 minutes Check if the ventilation holes are free RC simulator overloaded Test current is too high Use lower range of tested Ohmmeter Internal error Cable adapter tried to be exchanged while output terminals was ON Turn off the calibrator and turn on it again Switch off output terminals with button OUTPUT change the adapter and switch ou
15. POWERTEK MC 140 Multifunction Calibrator 8 Display la Ib Ic ld le 2a The display is divided to three horizontal sections 1 OUTPUT section This section displays the set up values of generated signals and the data related to the calibrator status The section includes the following types of data a Information line e designation of display section OUTPUT e error messages The messages appear when an attempt is made to set up an invalid state of the calibrator if analogue circuits of the calibrator are overloaded or if a communication error occurs when the calibrator is controlled using GPIB bus real date and time if its display is set up in the setup menu Auxiliary data This line displays the total value of output signal if a non zero relative deviation is set Main data This line displays the main data of the output signal and the unit of measurement using double size signs The line also includes two symbols VW A to define the actual position of the cursor during adjustment of the value lt gt buttons can be used to move the cursor and a v buttons to change the value The value can be also changed using the potentiometer Monitoring line This line displays the numbers entered using the numeric keyboard when the main data are set using the numeric keyboard The information allows the entered information to be checked Minor data There are two lines displaying the minor data of the output signal esp
16. Switch polarity xx ON OFF This parameter controls the function of the built in relay If ON is set the relay is closes before the test If OFF is set the relay is opens before the test 18 Switch activity xx PASS FAIL This parameter controls the function of the built in relay If PASS is set the relay is active changes its status if the test results in PASS status If FAIL is set the relay is active changes its status if the test results in FAIL status 19 Cal code 00000 Entry of calibration code Calibration code is a five digit number which must be entered to access the calibration mode If the calibration code is set to 00000 this information is displayed in the Setup menu Calibration code can be changed New calibration code can be directly entered using numeric keyboard and confirmed by pressing ENTER If non zero calibration code is set correct calibration code must be entered to access the calibration mode Non zero calibration code is not displayed further on the display The purpose of the calibration code is to prevent unauthorized users from changing the calibration of the 18 18 2888 12 56 SETUP MENU Keyb volume Brightness Rotary change Switch polarity Switch activity User Manual POWERTEK MC 140 Multifunction Calibrator instrument Note It is advisable to write down actual calibration code if changed If you forget the calibration code you have to send th
17. The main value on the display is set temperature The calibrator simulates a resistance temperature sensor e Press T button on the calibrator once again The calibrator simulates a thermocouple Setting the temperature Press T button on the calibrator The main value on the display is set temperature e The display shows the following data main data of temperature in C or K User Manual POWERTEK MC 140 Multifunction Calibrator sensor type thermocouples K N R S B J T E resistance temperature sensors Pt 1 385 Pt 1 392 Ni resistance at 0 C labeled RO resistance temperature sensors only cold junction temperature of thermocouple sensors labeled RJ set value of relate deviation in labeled AT xxxx x C K the information section shows temperature scale type uncertainty of simulated temperature value of selected temperature sensor type Set the main value of temperature using numeric keyboard cursor buttons or potentiometer Output terminals are disconnected the information section of the display shows forr the symbol which shows that output terminals are disconnected Connect the object to be calibrated to Hi Lo terminals Press OUTPUT button Red LED is lit above the OUTPUT terminal to indicate that the output signal is connected to output terminals The display shows the symbol of connected output terminals 8 6 2000 12 44 0100 0 C AT BHAU BOC RJ 6823 8 C TC
18. cable adapter The fuse can be replaced after turning the cap of the fuse holder The procedure is described in the adapter s manual The multimeter can be used as a DC milivoltmeter with 20 mV 200 mV 2 V 10 V ranges The appropriate input terminals are PTHU and PTLU Maximum allowed voltage on the input terminals against ground terminal is 20 V Freguency measurement is possible up to 15 kHz Input signal must be within 0 2 to 5 V range sguarewave or pulse shape of the input signal is expected User Manual v35 MC 140 Multifunction Calibrator POWERTEK Simultaneous functions The multifunction calibrator allows simultaneous generation of calibrated signal along with measurement of another signal using the built in multimeter To use both parts of the calibrator simultaneously cable adapters supplied by the manufacturer are necessary When using the calibrator the following states are possible Method ofuse 1 No cable adapter is used The calibrator is used with 140 01 cable adapter The calibrator is used with 140 41 designed for simultaneous measurement OUTPUT 140 41 function is setto AUX The calibrator is used with 140 41 designed for simultaneous measurement OUTPUT 140 41 function is set to PANEL The calibrator is used with Option 40 Canon 2 banana cable end The calibrator is used with Option 60 Canon 4 banana cable end The calibrator is used with Option 70 Canon
19. is returned as 1 563000e 002 Example POWE PHAS 250 2 lt cr gt activates the power generation mode and sets 250 2 phase shift between the output voltage and current POWE PHAS lt cr gt the calibrator returns 2 502000e 002 Example POWE PHAS 0 554 LAG lt cr gt activates the power generation mode and sets 0 554 LAG power factor POWE PHAS lt cr gt the calibrator returns 5 540000e 001 LAG SOUR POWE VOLT LEVE IMM AMPL lt DNPD gt This command sets the amplitude of the voltage for power generation At the same time the power generation mode is set lt DNPD gt Represents the voltage expressed in Volts used to generate the power Technical Data chapter lists the acceptable ranges If query is sent MC140 returns the set value of the voltage using standard exponential format Example 100 3V is returned as 1 003000e 002 SOUR POWE CURR LEVE IMM AMPL lt DNPD gt This command sets the amplitude of the current for power generation At the same time the power generation mode is set lt DNPD gt Represents the current expressed in Amperes used to generate the power Technical Data chapter lists the acceptable ranges If query is sent MC140 returns the set value of the current using standard exponential format Example 1 3A is returned as 1 300000e 000 SOUR EART VOLT lt CPD gt ON OFF 0 1 This command connects or disconnects the voltage Lo
20. lt CPD gt B E J K N R S T This command sets the type of thermocouple to be simulated Example to activate the simulation of S type thermocouple at 350 C TEMP THER 350 TEMP THER TYPE S lt cr gt If query is sent MC140 returns the set type thermocouple B E J K N R S T SOUR TEMP PRT LEVE IMM AMPL lt DNPD gt This command activates the simulation of resistance temperature sensors resistance generation lt DNPD gt Represents the temperature expressed in the units set by the UNIT command Technical Data chapter lists the acceptable ranges If query is sent MC140 returns the set temperature using standard exponential format Example 20 5 C is returned as 2 050000e 001 SOUR TEMP PRT TYPE lt CPD gt PT385 PT392 NI This command sets the type of resistance temperature sensor to be simulated Example to activate the simulation of platinum resistance temperature sensor at 350 C approximated using PT385 table Europe TEMP PRT 350 TEMP PRT TYPE PT385 lt cr gt If query is sent MC140 returns the set type of approximation table PT385 PT392 NI SOUR TEMP PRT NRESistance lt DNPD gt This command sets the nominal resistance of the resistance temperature sensor at 0 C 10Q to 2kQ can be set User Manual POWERTEK MC 140 Multifunction Calibrator lt DNPD gt Represents the nominal resistance in Ohms If query is sent MC140 ret
21. of output signal can be adjusted MC 140 Multifunction Calibrator is also suitable for basic calibration of oscilloscopes The calibrator includes a function which simulates resistance and thermocouple temperature sensors and a built in multimeter which can be used simultaneously Transducers of various types regulators and sensing units can be therefore checked without the need for additional measuring instruments Programmable functions of the calibrator when used as a tester include programming of a 10 step testing procedure which completes automatically and displays a PASS FAIL information in the end This feature is linked to an independent relay output which allows the control of other equipment Basic features of the calibrator include generation of calibrated DC and AC voltage in the range of 0 WV to 1000 V DC and AC current in the range of 0 uA to 20 A 50 uA to 1000 A when using a 50 turn coil Maximum precision of the calibrator is 0 0035 for DC voltage 0 03 for AC voltage 0 013 for DC current and 0 055 for AC current Maximum frequency range is 20 Hz to 50 kHz The calibrator can generate periodic non harmonic signal with defined duty cycle This facilitates especially the checks of multimeters and their accuracy when measuring non harmonic DC signals The calibrator can also simulate a resistance or capacitance Resistance range is 0 Q to 50 MQ capacitance range is 1 nF to 50 uF the accuracy suits the calibration of comm
22. on DC voltage resistance shunt 10 m 2 100 m 2 Burster 1280 or other type with accuracy 0 01 RLC meter BM 595 HP 4263A HP4278A ESI 2150 or other with accuracy 0 1 counter HP 53181A HO 53130 BM 642 or other with accuracy 0 001 powermeter 0 02 0 05 like Zimmer LMG95 Yokogawa e resistance standard 100 Ohm 1000 Ohm with accuracy 0 005 HP8903A Distortion analyzer and scope with bandwidth min 20 MHz are recommended for THD measuring of AC signals Configuration of the calibrator Calibrator should be tested directly from the front panel terminals and without use of terminal adapter 140 01 or 140 41 For build in multimeter testing cable adapters Option 40 and Option 60 are recommended To suppress influence of noise or interference with power line frequency in measuring circuit it is recommended following setting of the calibrator in SETUP MENU Coil x50 OFF GND U ON in capacitance test OF F GND I ON in capacitance test OF F Note It is recommended to ground only the voltage channel GND U ON GND I OFF for all ranges except the generation of power or energy If the meter to be calibrated has Lo terminal grounded it is recommended to un ground both outputs of the calibrator GND U OFF GND I OFF to exclude ground loops If it is grounded neither calibrator nor standard meter higher level can occur on the output terminals In general when calibrator is connected to the standard meter ground loops can be arise throu
23. v A cursor buttons or potentiometer to adjust the output current Confirm correctly set value by pressing WRITE display button If you want to skip the calibration point whose calibration you have already entered press SKIP display button Resistance shunt should be used on 2A 20 A ranges if standard multimeter does not cover this range DC power ranges calibration a b c User Manual v35 DC power ranges calibration is performed by calibrating 20 mA 200 mA 2 A 10 A DC current ranges There is no need to calibrate voltage ranges Select POWER DC from the calibration menu Connect a standard ammeter to calibrator s output terminals I I ATTENTION Calibrator s Lo and I terminals are electrically connected MC 140 Multifunction Calibrator POWERTEK d Follow the instructions provided on the calibrator s display and the POWER DC table to adjust the calibrator s output in the calibration points e To adjust the calibrator s output in the calibration points press SELECT button and use lt gt v A cursor buttons or potentiometer to adjust the output voltage Confirm correctly set value by pressing WRITE display button Shunt should be used on 2A 10 A ranges AC power ranges calibration a DC power ranges calibration is performed by calibrating 20 mA 200 mA 2 A 10 A AC current ranges There is no need to calibrate the voltage ranges b Select POWER DC from the calibration menu c
24. where the calibration is performed at 500 Hz DC current calibration is performed by setting the zero and slope of the scale in all ranges and in both signal polarities and AC current calibration is performed by setting the zero and slope of the scale in all ranges at 1000 Hz except the 20 A where the calibration is performed at 120 Hz AC and DC power calibration is performed by calibration of DC and AC current The phase relationship of voltage and current power factor is defined digitally and cannot be calibrated It can only be checked The respective check is not included in the calibration procedure Resistance calibration is performed by setting the zero and slope of the scale in all ranges Slope of each range is calibrated twice In practice 9 internal range resistances 50 Q to 10 MQ must be measured and the measured value entered into the calibrator then the zero point of the scale is adjusted for each range Calibration of resistance ranges must be performed through AUXILIARY connector Cable adapter Option 70 must be connected to the auxiliary output User Manual POWERTEK MC 140 Multifunction Calibrator Capacitance calibration is performed by setting the zero and slope of the scale in all ranges Slope of each range is calibrated twice In practice 9 internal capacitance ranges 1 nF to 10 uF must be measured and the measured value entered into the calibrator then zero point of the scale is adjusted for
25. 0 99 wave form square symmetrical positive negative duty cycle ratio uncertainty 0 05 Amplitude uncertainty REEE ERSE 1 00000 mV 20 00000 mV 0 2 50 uV 20 0000 mV 200 0000 mV 0 1 50 uV 0 200000 mV 2 000000 V 0 1 2 00000 V 10 00000 V 0 1 Mode HF frequency range 0 1 Hz to 20 MHz output impedance 50 Q wave form square symmetrical duty cycle ratio 1 1 amplitude 4 V pk pk output amplitude range 0 10 20 30 dB 1 dB amplitude uncertainty 10 rise fall time lt 3 ns User Manual v35 MC 140 Multifunction Calibrator POWERTEK Temperature sensors simulation temperature scale ITS 90 PTS 68 types of sensors RTD TC A RTD resistance sensors types Pt 1 385 Pt 1 392 Ni range of RO setting 20 Q to 2 KQ temperature range 200 to 850 C temperature uncertainty 0 04 C to 0 5 C see table bellow resolution 0 1 Ranges and uncertainties of RTD sensor simulation u sore l Valid in range 60 to 180 C Uncertainties in the table are maximal uncertainties of RTD sensor simulation Actual uncertainty for each set value of simulated temperature is determined by uncertainty of relevant resistance Actual temperature uncertainty is displayed on the calibrator display Actual uncertainties are always lower than those in above table B TC sensors types K N R S B J T E temperature range 250 to 1820 C according to the type t
26. 005 0 05 0 005 0 10 0 03 max voltage Vef 5 kHz 10 kHz 0 50 0 07 0 50 0 07 0 50 0 07 When option 140 50 Current Coil is used add uncertainty 0 3 of the set current to the value specified in above table Output current is multiplied by factor 50 Auxiliary parameters range maximal inductive load 400 uH 400 uH 400 uH 400 uH 200 uH 100 uH 02 02 02 02 02 03 T parameter includes non linear distortion and non harmonic noise Function Shape 122 User Manual POWERTEK MC 140 Multifunction Calibrator current range 100 uA to2 A wave form square positive negative symmetrical ramp A ramp B triangle truncated sin with THD 13 45 peak value uncertainty 0 3 500 nA displayed values peak effective Minimum frequency for squarewave signals is 0 1 Hz for all others 20 Hz Resistance summary range 0 Q to 50 MQ resolution 41 2 digit Resistance uncertainty resistance range uncertainty of value current range 0 00 Q 100 00 Q 0 03 10 mQ 1 mA 40 mA 100 00 Q 400 0 Q 0 015 400 uA 20 mA 400 0 Q 2 0000 kQ 0 015 100 uA 4 mA 2 000 KQ 10 000 kQ 0 015 20 uA 1 mA 10 000 KQ 40 00 KQ 0 015 4 uA 200 uA 40 00 KQ 200 00 kQ 0 015 l uA 40 uA 200 0 KQ 1 0000 MQ 0 05 0 2 uA 10uA 1 0000 MQ 4 000 MQ 0 1 40 nA 2 uA 4 000 MQ 20 000 MQ 0 2 10 nA 500 nA 20 00 MQ 50 00 MQ 0 5 4nA 150nA Maximal allowed voltage on output terminals is 8 V p Uncertainty is valid for four t
27. 15 uV 0 200000 mV 2 000000 V 0 003 0 0008 2 00000 V 20 00000 V 0 003 0 0005 20 0000 V 240 0000 V 0 003 0 0005 240 000 V 1000 000 V 0 005 0 005 value of the range for uncertainty calculation is 200 V ACV uncertain 20 Hz 10 kHz 20 Hz 10 kHz 10 kHz 50 kHz 10 kHz 50 kHz 0 10000 mV 20 00000 mV 0 2 0 05 20 uV 5 0 20 0 10 20 uV 20 0000 mV 200 0000 mV 0 1 0 03 20 uV 5 0 15 0 05 20 uV 0 200000 mV 2 000000 V 0 025 0 005 30 0 05 0 01 2 00000 V 20 00000 V 0 025 0 005 30 0 05 0 03 20 0000 V 240 0000 V 0 025 0 010 30 240 000 V 1000 000 V 0 03 0 02 2 valid for f lt 1000 Hz value of the range for uncertainty calculation is 200 V in the range 200 to 240 V is frequency limited to 1000 Hz 50 kHz 100 kHz 50 kHz 100 kHz 0 10000 mV 20 00000 mV 1 0 0 10 20 uV 20 0000 mV 200 0000 mV 0 3 0 05 20 uV 0 200000 mV 2 000000 V 0 2 0 05 2 00000 V 20 00000 V 0 2 0 05 20 0000 V 240 0000 V 240 000 V 1000 000 V Auxiliary parameters THD 0 05 200 uV 0 05 300 uV 0 05 0 2 output impedance lt 10 mQ lt 10 mQ lt 100 mQ lt 100 mQ maximal capacitance 500 pF 500 pF 300 pF 150 pF load parameter includes non linear distortion and non harmonic noise 4 valid for frequencies to 10 kHz User Manual v35 MC 140 Multifunction Calibrator POWERTEK Function Shape voltage range wave form
28. Calibrator 8 6 2000 12 47 SETUP METER B ABAB GE BGB 1 ABAB GE AA 4 ABAB GE BGAG A When the multimeter is being set up measurement cannot be initiated Measurement can only be initiated after the menu is left using the INPUT button Function selection e Press METER direct control button and select FUNCTION option from the menu using cursor buttons e Press UP DOWN display buttons or use the potentiometer to select one of the following functions basic DC voltage range VDC 10 V DC current mA DC 20 mA small DC voltage range mV DC up to 2 V four wire resistance measuring range up to 2 kQ frequency up to 15 kHz temperature measurement using thermocouples T TC temperature measurement using resistance temperature sensors T RTD measurement of strain gauges pressure force SGS By selection of the measurement function some related options are automatically changed as well measuring range unit of measurement Press EXIT display button the close the function selection menu and to return to the basic display Setting the measurement range Press METER direct control button and select RANGE option from the menu using cursor buttons Press UP DOWN display buttons or use the potentiometer to select the measurement range for selected function Ranges of individual functions can be changed small DC voltages mV DC ranges 20 200 2000 mV temperature measurement using thermocouples T TC t
29. Calibrator Connection of Pt100 sensor using 140 41 cable adapter Measurement of temperature using thermocouples The built in multimeter allows the measurement of temperature using external thermocouple 140 41 is required The thermocouple connects to Hu mV and Lu mV terminals Temperature of cold junction must be set manually To activate the measurement select T TC function mode using METER button in the function menu and press INPUT to measure the input value Powertek Connection of thermocouple to 140 41 cable adapter Strain gauge sensors for non electrical values The calibrator can be used to measure non electrical values using bridge connected strain gauges The bridge is supplied with DC voltage up to 15 V while measurement of small DC voltages between the other two points of the bridge is measured Each sensor is characterized by calibrated sensitivity of output voltage dependency on the measured non electrical value User Manual v35 MC 140 Multifunction Calibrator POWERTEK 140 41 cable adapter fitted with separate 7pin connector labeled SENSOR is required The picture shows the connection of the sensor to the calibrator Connection of the sensor to SENSOR connector SENSOR connector SGS sensor Meaning of pins of SENSOR connector 1 Voltage signal output of the bridge 2 Power supply power to the bridge 3 Not connected 4 Not connected 5 Voltage signal output of the bridge 6 Power supply
30. Connect a standard ammeter to calibrator s output terminals I I d Follow the instructions provided on the calibrator s display and the POWER AC table to adjust the calibrator s output in the calibration points To adjust the calibrator s output in the calibration points press SELECT button and use lt gt v A cursor buttons or potentiometer to adjust the output voltage Confirm correctly set value by pressing WRITE display button Shunt should be used in 2A 20 A ranges Resistance ranges calibration Resistance ranges calibration is performed by both calibration methods i e setting the checked value and measuring this value with the standard instrument as well as setting the nominal value of the calibrator s measurement range on the external multimeter by adjusting the calibrator s output If the entry of measured value to the calibrator is required VALUE METER is displayed at the respective calibration point The value on the calibrator s display has the same format as the nominal value of the respective calibration point on the display If on the other hand the user is requested to adjust the calibrator s output to set the nominal value of the calibrator s measurement range on the external multimeter VALUE is displayed at the respective calibration point The value on the calibrator s display has general format a The calibrator have to be calibrated with attached adapter Option 70 in four wire connectio
31. Multimeter F Adapter Opt 140 41 3 Calibration of a single phase electrical power current loop transducer Powertek Function setup Calibrator P function voltage current power factor frequency Multimeter DCI Adapter Opt 40 User Manual v35 MC 140 Multifunction Calibrator POWERTEK Testing When the calibrator is used as a tester the results of the tests PASS FAIL can be used to sort the products etc Contacts of the relay are connected to 140 41 cable adapter s front panel using black terminals 4mm Basic definition of the status of the relay is performed using SETUP MENU and is valid for all test programs Powertek User Manual POWERTEK MC 140 Multifunction Calibrator Specification Uncertainties include long term stability temperature coefficient linearity load and line regulation and the traceability of factory and National calibration standards Specified accuracy is valid after one hour warm up in temperature range 23 2 C Specified accuracy is one year accuracy Calibrator Voltage summary range DCV 0 uV 1000 V summary range ACV 0 1 mV 1000 V internal ranges 20 mV 200 mV 2 V 20 V 240 V 1000 V voltage resolution 61 2 digit frequency resolution 6 digit minimum step 0 001Hz freguency range 20 Hz to 100 kHz bellow 20 V 20 Hz to 10 kHz bellow 200 V 20 Hz to 1000 Hz bellow 1000 V 0 uV 20 00000 mV 0 03 0 0 10 uV 20 00000 mV 200 0000 mV 0 01 0 0
32. O O J O OJ O OJ O OJ OJO O J O O OJ O oj O O O J OC OO OJO OJ OQ OJ OJ OJ O O J OJ O OJ O O Table V DC current test Function Frequency Hz Deviation allowed value A DC 7 0 061 A DC M x 061 A DC gt 4 025 A DC gt 025 A DC M 3 013 A DC s M 013 Table VI User Manual v35 MC 140 Multifunction Calibrator POWERTEK AC current test Function Frequency Hz Deviation allowed value A AC 60 0 161 A AC 60 081 A AC 60 055 A AC 120 055 A AC 1000 055 A AC 1000 055 A AC 60 055 Table VII AC DC high current test Function Range Frequency Hz Deviation allowed value A DC 0 025 2 2 A DC 025 A AC 2 060 A DC 10 040 A DC 10 040 A AC 10 160 Table VIII AC DC power test Function Table IX Resistance test Value VA Voltage 240V Frequency Hz Deviation allowed value Function Value Ohm Frequency Hz Deviation allowed value 10 0 DC 0 130 100 0 DC 015 O 4W 1000 0 DC 015 O 4W 10000 0000 DC 015 O 4W 100000 0000 DC 015 O 4W 1 000000e 6 DC 050 O 4W 1 000000e 7 DC 200 O
33. Setting the numeric values of the test Setting the relays Setup menu Calibration mode Error messages Functional description of the Calibrator ccccccccccccssssssssccccssscccsssssccccccsssscssssssccseccssssssssesoes 74 Calibrator s maintenance Performance verification test System control IEEE 488 bus properties RS232 bus properties Command syntax Standard Status Data Structures Examples of use Calibration of measurement instruments Multimeters Powermeters Counters and oscilloscopes Thermometers Measurement Voltage current and freguency Measurement of resistance or temperature using resistance temperature sensors Measurement of temperature using thermocouples Strain gauge sensors for non electrical values Testing of regulation and measurement sets and evaluation units Use of Opt 140 41 cable adapter Use of Option 40 60 cable adapter Use of Option 70 Examples of tests Testing Specification Accessories User Manual POWERTEK MC 140 Multifunction Calibrator Basic Information MC 140 Multifunction Calibrator is a multifunction calibrator tester to be used primarily as a standard for calibration laboratories It can be used for calibration of any measuring instrument which measures voltage current resistance capacitance and frequency It generates fixed non harmonic signals to allow calibration of measuring instruments using signals with non zero harmonic distortion Frequency amplitude and duty cycle
34. Such operation is equivalent to the change of internal range only in U I P E modes If the change results in overflow or underflow of calibrator s range an error message appears Value too large if the resulting value is too large Value too small if the resulting value is too small Range change e Press the display button labeled x10 if you want to increase the range 10 to decrease the range e The main value shown on the display is increased 10x reduced 10x P E function changes the current not voltage when the range is changed R C function changes the set value 10x The procedure however cannot be used to step the internal resistance capacitance ranges which are not decimal T function also has other than decimal ranges and the change of set value 10x therefore does not correspond to internal range change Internal range change in this case depends on the temperature sensitivity of the resistance capacitance Connection disconnection of output terminals After switching on the output terminals are disconnected in all modes Press the OUTPUT button to connect the output signal to the terminals Red LED above the OUTPUT button is lit and the information field on the display shows the following mm symbol Press the OUTPUT button again to disconnect the output terminals Red LED goes off and the information field OFF User Manual v35 MC 140 Multifunction Calibrator POWERTEK o
35. WAI 9 ae L SPO ISMC dV SECU IEMO d SPOOL ISMOJ Ja uco epnijduy BPAP SHD ICA MC 140 Multifunction Calibrator duub jueuno O 0 ISLE eys sspyd SPOLW JEMCq SPOLUBAMO BSa Bawn ssuag Ie duuD lellei 198 da SSBUDI usunoa _ ponos UID rot Si eeg JO DZE S Hauo AZ SGupyy AC JOJOIDALUOS oy JOJDZE U S Da Spaun DG A OZ 2buby A 02 a pts o va HAZ BIOS IBUUIC SUDU A LDG M LDC 7 N0 eBun Od A 000 Guy A OOZ BLUOJSUDL OY A 000 SBurbey M OV POWERTEK User Manual v35 Anoz e5uD MC 140 Multifunction Calibrator POWERTEK 2 20 V DC voltage ranges The functional scheme is shown in the picture below DA convertor 20 V amplifier There is a DC reference voltage source integrated within the 22bit measurement converter Its output is fed to the output stage for 2 and 20 V range Output voltage present at Hi and Lo terminals is sensed by sensing wires Feedback eliminates the influence of amplifier s output impedance and of the resistance of wires within the calibrator 200 V DC voltage range The block diagram functional scheme is shown in the picture below DA convertor a 204 amplifier 2004 amplifier The scheme is similar to 2 and 20 V ranges A 240 V power amplifier with electronic fuses is connected to the output of 20 V amplifier 2 to 200 V AC voltage ranges The functional scheme is shown in the
36. being disconnected The output terminals are automatically disconnected when changing between AC and DC ranges or when changing the function mode Using AUTOCAL function To remove the effect of short term drift and temperature dependency of small DC voltages AUTOCAL function can be used It can only be activated in the calibration mode Calibration mode lists the respective procedure Overloading of terminals If the output terminals are overloaded or short circuited in the voltage mode the calibrator disconnects the signal from the output terminals and reports Overload U output error ATTENTION DANGEROUS VOLTAGE When working with voltages over 50 V rules for work with dangerous voltage must be adhered to Never touch the measurement circuit when voltage over 50 V is set and output terminals are connected ATTENTION DANGEROUS VOLTAGE When the calibrator is controlled remotely it is not possible to disconnect the output voltage using the buttons located at the front panel The calibrator must be first switched to local control mode by pressing the LOCAL button and then the output terminals can be disconnected or the mains switch must be switched off User Manual POWERTEK MC 140 Multifunction Calibrator Generation of calibrated current The multifunction calibrator provides calibrated DC and AC current Output terminals for voltage ranges are labeled I and I at the front panel The
37. button can be used to cancel the entry 5 Function buttons Function buttons can be used to call up the functions of the calibrator directly The following buttons are provided function button DC voltage AC voltage DC current AC current resistance capacitance power energy freguency internal multimeter simulation of temperature sensors After the function mode is changed the parameters of the respective function are restored If the respective function was never used the calibrator resets to its reference values Reference values for individual functions are listed below function value parameters DC voltage AC voltage f 1000 Hz DC current AC current f 1000 Hz resistance capacitance power f 100 Hz energy freguency U 1 Vsym multimeter DC voltage simulation of temperature sensors Pt 100 1 385 ITS90 cold junction temperature of TC sensors R 1 U 100 V I 1 A PF power factor 1 LA active power is displayed in Watts User Manual POWERTEK MC 140 Multifunction Calibrator 6 Output input terminals buttons OUTPUT button is used to connect the output signal of the calibrator to the output terminals The connection is confirmed by red LED and a symbol at the display METER button can be used to connect the input terminals to the internal multimeter The connection is confirmed by green LED 7 Output input terminals Output signal of the calibrator is connected to the output ter
38. disconnected only in the voltage and current measurement mode and remain connected in all other modes If 140 41 cable adapter is used the signal to be measured is connected to U I COM terminals COM is the common terminal of the multimeter Connection of the multimeter when measuring the voltage current and frequency using Opt 140 41 cable adapter User Manual v35 MC 140 Multifunction Calibrator POWERTEK Powertek The multimeter allows the measurement of small DC voltages in the range of 0 to 2 V 140 41 cable adapter is required The signal to be measured connects to Hu mV and Lu mV terminals Lu mV is the common terminal of the multimeter To activate the measurement select mVDC function mode using METER button in the function menu and press INPUT to measure the input value Measurement of resistance or temperature using resistance temperature sensors Resistance can only be measured using four wire connection using Opt 60 or Opt 140 41 cable adapter Opt 60 cable ends with four bananas labeled Hi Hu Lu Li Their meaning is as follows e Hi current terminal H e Hu voltage terminal H e Lu voltage terminal L e Li current terminal L During the measurement of resistance or temperature using resistance temperature sensors the rules applicable to the four wire connection must be observed Connection of Pt100 sensor using Opt 60 cable aT nocd gs Ex User Manual POWERTEK MC 140 Multifunction
39. display button If you want to skip the calibration point whose calibration you have already entered press SKIP display button Switch output terminals OFF Disconnect multimeter and calibrator DC current ranges calibration a b c d Connect current input terminals of the multimeter to the I I output terminals of the calibrator Select CURRENT DC from the calibration menu Select DC current measurement range on external multimeter Switch output terminals ON Follow the instructions provided on the calibrator s display and the DCI table to adjust the calibrator s output in the calibration points To adjust the calibrator s output in the calibration points press SELECT button and use lt gt v A cursor buttons or potentiometer to adjust the output current Confirm correctly set value by pressing WRITE display button If you want to skip the calibration point whose calibration you have already entered press SKIP display button Resistance shunt should be used on 2A 20 A ranges if standard multimeter does not cover this range AC current ranges calibration a b c Select CURRENT AC from the calibration menu Set the same function on external multimeter Follow the instructions provided on the calibrator s display and the ACI table to adjust the calibrator s output in the calibration points To adjust the calibrator s output in the calibration points press SELECT button and use lt gt
40. each range Frequency function calibration is performed by calibration of DC voltage range and zero point check DC voltage levels are checked between which the calibrator switches when generating the signal The accuracy of PWM of the squarewave output signal depends on the frequency accuracy and cannot be calibrated it can only be checked The respective check is not included in the calibration procedure Multimeter is calibrated on voltage ranges 2 V and 10 VDC voltage ranges on current range 20 mADC and on resistance range 2000 Q For calibration cable adapters Option 40 voltage current and Option 60 resistance must be used Access to the calibration procedure Calibration code is required to access the calibration procedure e Press SETUP to open the setup menu e Press CALIB display button Concerning cable adapters access to the calibration mode is permitted without connected any of cable adapters or with connected cable adapter Option 40 Option 60 and Option 70 If cable adapter Option 140 01 or Option 140 41is connected to the AUXILIARY connector access to calibration mode is not permitted Calibrator will display message Err 9 Bad cable adapter If an attempt is made to access the calibration procedure within 60 minutes after the calibrator was switched on the calibrator does not open the respective menu and displays the following message instead Err 21 Time warm up XX minutes remain If the calibrator is alr
41. gt This query returns the Event Status Enable register Clear status IEEE488 only User Manual v35 MC 140 Multifunction Calibrator POWERTEK CLS lt cr gt This command clears the Event Status Register and the Status Byte Register except the MAV bit and output queue Remote control REM lt cr gt This command activates the remote control When the calibrator is controlled by GPIB bus it goes to the remote control mode automatically When remote control is active the calibrator ignores all controls from the front panel except LOCAL button Local control LOC lt cr gt This command activates the local control using front panel buttons When the calibrator is controlled by GPIB bus it goes to the local control mode automatically Local control lock LLO lt cr gt This command locks out the local control the calibrator cannot be returned to local control by pressing LOCAL button Return to local control can only be performed by a command sent through the bus or by switching the calibrator off and on Local control unlock UNL lt cr gt This command cancels the LLO command Unlocked calibrator can be returned to local control mode by pressing LOCAL button User Manual POWERTEK MC 140 Multifunction Calibrator Standard Status Data Structures All status registers are defined by the IEEE 488 2 standard The programmer has access to Status Register Enable Register and Output Que
42. indicated by a green LED above the INPUT button Press INPUT button again to stop the measurement The LED goes off and the input connectors are disconnected 18 18 2088 12 48 05 00000 U z BB 68682 Accuracy 8 68584 INPUT 10 0003 mA Paes i IB a ake The multimeter does not display uncertainty of measuring If the input range is exceeded OVERFLOW message is displayed 140 41 Cable adapter must be used to connect the signal Zero function The multimeter has a zeroing function It can be activated after the measurement was activated by pressing INPUT direct control button Zeroing is performed by pressing METER direct control button After the button is pressed most recent value is stored and subtracted from all ongoing measured values A Zero message appears on the right side of the display indicating that this function is active Press METER a second time to deactivate the Zeroing function Multimeter s menu can be entered only after the measurement is terminated by pressing INPUT button User Manual POWERTEK MC 140 Multifunction Calibrator 16 16 2668 12 48 OFF 05 00000 U Ad BA BABB INPUT 0 0002 mA Zeroing function can be used e g to compensate the voltage drops at the cables to suppress any remanent value ofthe signal etc Overloading can damage the multimeter The current inputs of the multimeter are protected from current overloading by a fuse located in 140 41
43. indication of the type of output shape Shape xxxxx is displayed under the frequency value Press the respective display button to change the shape of the output signal The calibrator can generate the following shapes SINE harmonic PWM POS squarewave positive with adjustable duty cycle PWM SYM squarewave symmetrical with adjustable duty cycle PWM NEG squarewave negative with adjustable duty cycle RAMP A ramp symmetrical positive RAMP B ramp symmetrical negative TRIANGLE triangular symmetrical LIM SINE harmonic with amplitude limitation truncated sin Generation of non harmonic signals has some limitations e non harmonic voltages can be generated in the 0 1 Hz to 1000 Hz frequency range e non harmonic currents can be generated in the 0 1 Hz to 120 Hz frequency range e generation of these signals is limited to the voltage range up to 200 V and current range up to 2 A e non harmonic signals cannot be generated in the P E power energy mode Control in the non harmonic mode e Select AC voltage or AC current mode The main section of the display shows the following data main data of set current or voltage unit of measurement relative deviation frequency selected SHAPE of the output signal e Keep pressing SHAPE display button to select the desired shape of the output signal The output terminals are automatically disconnected when changing the shape of the output signal or when changing the relative devia
44. information exchange with the controller The Output Queue shall be a first in first out FIFO Queue The Output Queue is cleared upon power on User Manual v35 MC 140 Multifunction Calibrator POWERTEK Examples of use Calibration of measurement instruments The calibrator can be used for direct calibration of various instruments which measure electrical values Opt 140 01 cable adapter is recommended The cable adapter includes a temperature sensor which allows the measurement of external temperature Measured value can be displayed by pressing INPUT button Multimeters The calibrator can be used for calibration of digital and analogue multimeters DCV ACV DCI ACI resistance capacitance temperature frequency and duty cycle Voltage ranges Thanks to low output impedance and high output current the calibrator can be used for calibration of analogue voltmeters and milivoltmeters having low input impedance Voltage output is connected to Hi Lo terminals The calibrator does not allow the four wire connection of the instrument to be calibrated It is not recommended to connect non standard load to the voltage output The calibrator is designed to be used for calibration of voltmeters Output terminals should be loaded with high and real impedance Although the output is fitted with fast electronic and microprocessor protection high capacitance or inductance loads can lead to oscillations of output amplifiers and result in da
45. main value can be changed using numeric keyboard changing the digit at the cursor position after selecting the cursor position with lt gt buttons by range change using x10 10 display buttons or using the potentiometer Output power is changed by changing the value of output current 16 16 2686 12 37 0 930000 ku Phase 8 58 888 Hz U 236 6688 U 4 64348 A Accuracy 8 8 V DC User Manual v35 MC 140 Multifunction Calibrator POWERTEK Setting the voltage e The main power value can be changed by changing the voltage 16 18 2668 12 38 1 150000 kW Phase 8 f 50 000 Hz U 230 0000 U 05 00060 A 225 ta ta 174 Exit Select P E mode and then keep pressing the center cursor button until symbols appear under the voltage U xxx xxxx V The value can be set using numeric keyboard and confirmed by pressing uV mV V display button The value can be set using cursor buttons or potentiometer as well Main power value is recalculated using new set voltage and existing setting of current and power factor Setting the current e The main power value can be changed by changing the current e Select P E mode and then keep pressing the center cursor button until symbols appear under the current I xx xxxx A The value can be set using numeric keyboard and confirmed by pressing uA mA A display button The value can be set using cursor buttons or pot
46. nominal value of the respective calibration point If on the other hand the user is requested to adjust the calibrator s output to set the nominal value of the calibrator s measurement range on the external multimeter VALUE is displayed at the respective calibration point The value on the calibrator s display has general format a Select CAPACITANCE from the calibration menu Select GND U OFF and GND I OFF from the setup menu b Adjust the values of shorted and open terminals of the external RLC meter set the frequency used during the measurement 1000 Hz for 1 nF to 10 nF range 100 Hz for 10 nF to 10 uF ranges Connect Hi Hu terminals to calibrator s Lo output and Li Lu terminals to calibrator s Hi output Measure the capacitance of internal range capacitors using the RLC meter and write the values into the calibrator The procedure is the same as when calibrating the resistance ranges Perform the adjustment for all calibration points as usual Press WRITE display button to confirm correct values CALIBRATION MENU Capacitance Range 2GnF Value 16nF 00025535 URITE skiP Exit User Manual v35 MC 140 Multifunction Calibrator POWERTEK Amplitude calibration in frequency mode a Select FREQUENCY in the calibration menu b Connect the external multimeter with DC voltage measurement range selected to calibrator s Hi Lo output terminals c Follow the instructions provided on the calibrato
47. of the ammeter must be positioned in angle 90 to the coil When using the current coil no steel or other magnetic objects must be present in the vicinity 50 cm of the current coil as they would deform the magnetic field and cause big calibration error Connection of current coil Current coil 130 50 140 Powermeters The calibrator can be used for calibration of DC and AC digital and analogue powermeters and energy meters The following limitations apply voltage 0 2 V to 240 V current 2mA to l0A frequency DC 40 Hz to 400 Hz time 1 1 s to 1999 s phase shift 180 to 180 The display can show active reactive and apparent power and energy values The phase shift between the output voltage and current can be set and displayed as well either as the power factor PF cos or as the phase shift in degrees User Manual POWERTEK MC 140 Multifunction Calibrator In the P E mode the permitted load of the voltage and current outputs is the same as in the voltage and current modes If the output is overloaded the calibrator disconnects the output terminals and displays an error message For calibration of tong powermeters current coil can be used Power factor meters can be calibrated as well sic connection of a powermeter to the calibrator Possible methods of grounding of the measurement circuit To prevent the creation of ground loops and to ensure the guaranteed precision of the calibrator the powermeter to b
48. output signal ramp shape for voltage or current modes The amplitude can be set The output switches between amplitude a amplitude TRlangel sets AC output signal triangular shape for voltage or current modes The amplitude can be set The output switches between amplitude a amplitude LIMSinusoid sets AC output signal sinus shape with limitation of amplitude for voltage or current modes The amplitude can be set The output switches between amplitude a amplitude PWMPositive sets POS type output signal digital pulse width modulation PWMSymmetrical sets SYM type output signal digital pulse width modulation PWMNegative sets NEG type output signal digital pulse width modulation SQUare sets HSO type output signal digital pulse output User Manual v35 MC 140 Multifunction Calibrator POWERTEK If query is sent MC140 returns a string containing DC SIN PULP PULS PULN RMPA RMPB TRI LIMS PWMP PWMS PWMN SQU depending on the current setting If impedance or temperature sensor simulation is set NONE is returned SOUR VOLT LEVE IMM AMPL lt DNPD gt This command activates the generation of DC or AC voltage depending on the DC or SIN parameter of the FUNC command lt DNPD gt Represents the value of DC or AC voltage expressed in Volts Negative value is accepted for DC voltage Technical Data chapter lists the acceptable ranges If query is sent MC140 returns t
49. power to the bridge 7 Shielding User Manual POWERTEK MC 140 Multifunction Calibrator Testing of regulation and measurement sets and evaluation units The calibrator can be used for calibration and testing of various instruments and regulators which must be fed by precise signal and whose response electrical signal is to be measured Two methods of connection can be used each of them having different function and generation and measurement ranges Simultaneous mode can only be used if Opt 40 60 or 140 41 cable adapter is connected to AUXILIARY terminal When no adapter is connected simultaneous mode cannot be activated Use of Opt 140 41 cable adapter This adapter allows full utilization of the features of the built in multimeter It can be used during the calibration of objects which require the simulation of temperature or other non electrical sensor signals or the generation of small DC voltages at the input side and the measurement of standard outputs current loop standard voltage at the output side When using 140 41 cable adapter OUTPUT 140 41 option must be set in the setup menu This function selects the calibrator s output terminals If OUTPUT 140 41 option is set to PANEL calibrator s output is connected to front panel terminals not to the cable adapter If this option is set to AUX output signals are connected to the cable adapter not to the front panel terminals Multimeter Simultaneous function
50. pressing F direct mode button and selecting PWM mode Frequency amplitude and duty cycle can be set The instrument to be calibrated connects to FREQ connector using BNC banana cable Connection of the frequency output Commer 20 be calkmed Powertek taaxm cadie The calibrator can be used for basic calibration of oscilloscopes The calibrator provides the following functions e check of time base up to 20 MHz using squarewave signal The function is activated by pressing F direct mode button and selecting HF mode Frequency can be set check of vertical channel input sensitivity from 1 mV to 10 V in the frequency range up to 10 kHz The function is activated by pressing F direct mode button and selecting PWM mode Frequency amplitude and duty cycle can be set check of bandwidth using a signal up to 20 MHz with very steep rising edge less than 5 ns Calibration of time period using squarewave signal whose period can be set up to 10 s with selectable duty cycle The function is activated by pressing F direct mode button and selecting PWM mode Frequency can be set The delay of the signal displayed on the oscilloscope s screen is checked The oscilloscope to be calibrated connects to FREQ connector using a coaxial cable Thermometers The calibrator can be used for calibration of transducers used in thermometers and heat meters which use a thermocouple or Pt or Ni sensor The block connected to the sensor is checked as it is disconn
51. returns 1 to the output queue after all pending operations are complete Wait to Continue command WAI lt cr gt Prevents the instrument from executing any further commands or queries until all previous remote commands have been executed User Manual POWERTEK MC 140 Multifunction Calibrator Reset RST lt cr gt This command resets the calibrator to its initial status Test operation TST lt cr gt This command executes an internal self test Return the self test result 0 for pass or 1 for fail Status byte reading IEEE488 only STB lt cr gt This query returns the Status Byte Register including the MSS bit Service Request Enable setting IEEE488 only SRE lt value gt lt cr gt This command sets condition of the Service Request Enable register Since bit 6 is not used the maximum entry is 191 Service Request Enable reading IEEE488 only SRE lt cr gt This query returns the Service Request Enable Register Event Status Register reading IEEE488 only ESR lt cr gt This query returns the contents of the Event Status Register and clears the register Event Status Enable setting IEEE488 only ESE lt value gt lt cr gt This command programs the Event Status Enable register bits If one or more of the enabled events of the Event Status Enable register is set the ESB of Status Byte Register is set too Event Status Enable reading IEEE488 only ESE lt cr
52. terminal to from GND terminal e ONorl1 grounds the voltage output e OFFor0 ungrounds the voltage output If guery is sent MC140 returns ON when the output is grounded or OFF when ungrounded Example EART VOLT 1 lt cr gt grounds the voltage output terminals EART VOLT lt cr gt the calibrator returns ON or OFF User Manual v35 MC 140 Multifunction Calibrator POWERTEK SOUR EART CURR lt CPD gt ON OFF 0 1 This command connects or disconnects the current Lo terminal to from GND terminal e ONorl grounds the current output e OFF or 0 ungrounds the current output If query is sent MC140 returns ON if the current terminals are gronded or OFF if ungrounded Example EART CURR 1 lt cr gt grounds the current output terminals EART CURR lt cr gt the calibrator returns ON or OFF SOUR AUX lt CPD gt ON OFF 0 1 This command connects or disconnects the output signals to AUXILIARY connector e ON or output signals are connected to AUXILIARY connector front panel terminals are disconnected e OFF or 0 output signals are connected to front panel terminals AUXILIARY connector is disconnected If query is sent MC140 returns ON when the signals are connected to AUXILIARY connector or OFF when the signals are connected front panel terminals Example AUX 1 lt cr gt output signals are connected to AUXILIARY connector AUX lt cr gt the calibrator returns ON or OFF SOUR
53. that an error has occurred which is neither a Command Error a Query Error nor an Execution Error A Device specific Error is any executed device operation that did not properly complete due to some condition such as overload Query Error bit 2 This event bit indicates that either 1 an attempt is being made to read data from the Output Queue when no output is either present or pending 2 or data in the Output Queue has been lost Operation Complete bit 0 This event bit is generated in response to the OPC command It indicates that the device has completed all selected pending operations User Manual POWERTEK MC 140 Multifunction Calibrator ESE Event Status Enable Register The Event Status Enable Register allows one or more events in the Event Status Register to be reflected in the ESB summary message bit This register is defined for 8 bits each corresponding to the bits in the Event Status Register The Event Status Enable Register is read with the common query ESE Data is returned as a binary weighted value The Event Status Enable Register is written to by the common command ESE Sending the ESE common command followed by a zero clears the ESE The Event Status Enable Register is cleared upon power on Output Queue The Output Queue stores response messages until they are read The availability of output is summarized by the MAV message available summary message The MAV summary message is used to synchronize
54. the header of the table SETUP TESTER Program number 81 STEP OUTPUT V LOW mV HIGH mV TIME 18 00000A 8 9988 2 8188 8 5 38 a00000 1 9808 2 0288 2 8 38 668888 2 9788 3 4388 2 4 48 668008 3 9688 4 0400 2 0 56 888868 4 9500 5 8500 2 8 Output Input Steps Exit Confirm the entry by pressing ENTER New entry is copied to the respective position This way all numeric entries in the table can be changed Press EXIT display button to return to the previous level when the programming is complete Note When the test program is executed all steps are performed Within one test program only one type of input signal and output signal can be used It is impossible to switch to other function of the calibrator in the middle of a program Setting the relays SWITCH POLARITY and SWITCH ACTIVITY items of SETUP MENU are used to set up the relay The following table lists the states of the relay depending on the values of SWITCH POLARITY SWITCH ACTIVITY and the test result SETUP MENU RELAY BEFORE TEST TEST RESULT RELYA AFTER TEST Switch polarity disconnected FAIL disconnected Switch activity PASS connected Switch polarity connected FAIL connected Switch activity PASS disconnected Switch polarity disconnected FAIL connected Switch activity PASS disconnected Switch polarity connected FAIL disconnected Switch activity PASS connected Setup menu
55. tupe T 3 3672 mu baer U STC tupe Setup Load of output terminals is limited similarly to corresponding voltage or current ranges Output signals provided at Hi Lo terminals and AUXILIARY connector are short circuit proof Switching between temperature sensor types Keep pressing TC type or RTD type display button to select desired sensor type If resistance temperature sensors are selected each press of the button selects Pt1 385 Pt1 392 or Ni resistance thermometer The display shows current setting as Pt385 Pt392 Ni If thermocouples are selected each press of the button selects K N R S B J T E types The display shows current setting as TC TYPE x where x is the type of the thermocouple User Manual v35 MC 140 Multifunction Calibrator POWERTEK Entry of RO coefficient for resistance temperature sensors For resistance temperature sensors resistance at 0 C labeled RO can be set The range is 20 C to 2kQ for all types of resistance temperature sensors e Select the resistance temperature sensor mode and keep pressing the center cursor button until symbols appear under the RO coefficient value RO xxxx Q e Set the value using numeric keyboard and confirm by pressing Q or KQ display button or by pressing ENTER 8 6 2000 12 45 0100 0 C AT 668 8 C RB 188 m Pt385 Accuracy 8 11 C fT PTD type Setup Note After the calibrator is switch
56. type of output signal is selected numeric values of individual steps can be set The following parameters can be set for each step 1 Value of OUTPUT signal The range valid for the respective output signal can be used If DC voltage or DC current are programmed only the voltage or current can be set not the frequency The calibrator uses the frequency which has been previously set for the respective output function If PWM or HF frequency output is selected only the frequency can be set The calibrator uses the output voltage and duty cycle which has been previously set for the respective output function If power output W AC W DC is selected only W can be selected The calibrator uses constant voltage power factor phase and frequency which have been previously set in power generation mode Change of power set in the programming table is achieved by change of output current during the test Lower tolerance limit of input value LOW The limit can be set within the selected range of the multimeter Upper tolerance limit of input value HIGH The limit can be set within the selected range of the multimeter Duration of each program step in seconds TIME Setting range is 0 5 to 100 s User Manual POWERTEK MC 140 Multifunction Calibrator Programming of values is done as follows Select the value to be changed by cursor buttons or the knob of the potentiometer Enter the numeric value using the units of measurement displayed in
57. value over possible range Set correct value limit Minimum value is out of Attempt to set value under possible range Set correct value limit Deviation is too high Set deviation is out of limit 30 to 30 Set correct value Change of polarity is not allowed Attempt to change polarity where it is not allowed Concerned modes F P E R C ACV ACI Attempt to set negative polarity where it is not allowed Concerned modes F P E R C ACV ACI Attempt to change parameter AC DC where it is nonsense or where it is not allowed Negative polarity is not allowed DC AC conversion is not possible Time limit for current over Long term loading current terminals with output current over A 10 A exceeded Function cannot be used on Do not use this setting in combination with connected cable output AUXILIARY adapter MC 140 Multifunction Calibrator POWERTEK Functional description of the calibrator Basic blocks Basic functional blocks are front panel keyboard LCD display output terminals output voltage amplifier 200 V output voltage amplifier 20 A main board voltage amplifier 2 V voltage amplifier 20 V DC reference voltage with DAC generator feedback circuits phase shift circuits current ranges generator multimeter power line transformer power supply board interface GPIB and RS232 User Manual ORODNA DYHA Zz Nd2 O or L W LubIBDIp XJOJA IE IBAUCO JUNO Z edu auss ORE
58. voltage ranges If the instruments to be calibrated are not connected to calibrator s output terminals using original cables ensure that cables suitable for the calibration voltage and current are used Maximum output voltage can reach 1000 V AC and the maximum output current can reach 20 A AC Regular maintenance The calibrator does not require any special maintenance of electrical or mechanical parts If is gets dirty the case and the display can be cleaned by a wool rag moistened with alcohol The calibrator should be calibrated in the recommended 12 month intervals A calibration center should perform the calibration What to do in case of failure If an obvious failure occurs during the operation e g the display is not lit the fan is not turning the calibrator must be switched off immediately First check the fuse located in the power cord receptacle Procedure is following e Remove the end of power cord from the mains connector at the rear panel Insert the blade of a flat screwdriver into the opening cut in the mains voltage selector and pry out the fuse holder User Manual POWERTEK MC 140 Multifunction Calibrator e Remove the fuse Replace it with new fuse of the same rating if the fuse was broken e Replace the fuse holder reconnect the power cord and switch on the calibrator If the problem persists contact the manufacturer If an obvious fault is evidenced e g a measurement range or an operat
59. which will be measured at the input terminals by the built in multimeter after the test program is executed The following options are available V DC mA DC mV DC R 4W Freq T TC T RTD Explanation of symbols VDC DC voltage measurement in 12 V range mA DC DC current measurement in 25 mA range mV DC DC voltage measurement in 20 mV to 2 V range automatic range switching R4W four wire measurement of resistance Freq measurement of frequency up to 15 kHz TTC measurement of temperature using thermocouple TRTD measurement of temperature using resistance temperature sensor If T TC or T RTD functions are used the parameters set for the multimeter mode apply The settings include the type of unit of measurement K C temperature scale ITS68 PTS90 sensor type temperature of cold junction of thermocouple RJ and resistance at 0 C Selected type of input signal is displayed in the header of the programming table Input column The values in the table change when the type of the input signal is changed Number of test steps can be set by pressing STEPS display button in the range 1 to 10 Set number of steps is displayed in the header of the programming table Steps column The number of the rows in the table changes when the number of steps is changed You can select the lines in the table by pressing v a buttons or by turning the knob of the potentiometer Setting the numeric values of the test After the
60. 8 and RS232 All commands listed in this chapter are explained in two columns KEYWORD and PARAMETERS KEYWORD column includes the name of the command Each command includes one or more keywords If a keyword is in brackets it is not mandatory Non mandatory commands are used only to achieve compatibility with language standard SCPI Capitals designate the abbreviated form of the commands extended form is written in lowercase Command parameters are in brackets lt gt each parameter is separated using a comma Parameters in brackets are not mandatory Line means or and is used to separate several alternative parameters Semicolon is used to separate more commands written on one line E g VOLT 2 5 OUTP ON Note Each command must end in lt cr gt or lt lf gt Both codes lt crlf gt can be used at the same time The calibrator performs all commands written on one line of the program after it receives lt cr gt lt lf gt or lt crlf gt code Without this code the program line is ignored Description of abbreviations lt DNPD gt Decimal Numeric Program Data this format is used to express decimal number with or without the exponent lt CPD gt Character Program Data Usually it represents a group of alternative character parameters E g ON OFF 0 1 A flag indicating a request for the value of the parameter specified by the command No other parameter than the question ma
61. AUXILIARY connector 4 Entry to the setup menu After pressing the SETUP button options of the SETUP MENU appear on the display and the display buttons allow the entry to the calibration mode CALIB or entry to the mode when the calibrator is used as a tester TESTER Previous function is restored by pressing of EXIT display button Setting the value of output signal All function modes allow several methods of setting the main value of the output signal Entry of the value using numeric keyboard e use the numeric keyboard to select the desired value After the first digit is entered symbols of unit of measurements are displayed above the display buttons The monitor line displays the symbols the same entry can be started by pressing the central cursor button after the entry is complete the value is displayed on the monitor line press the display button below the desired unit of measurement V mV or uV in the example below the value is copied to the main display and the monitor line disappears User Manual POWERTEK MC 140 Multifunction Calibrator 16 10 2000 12 19 10 00000 V AZ BE ABAAZ 1668 68 Hz Shape Sine Entry of the value using cursor buttons e press lt gt A or v button The display now includes cursor marks which point to the active digit A and v buttons can be used to change the active digit lt gt buttons can be used to change the position of the cursor marks to get to the d
62. For RS232 bus communication speed can be set 150 to 19200 Bd and software handshake XON XOFF can be set The calibrator can be only controlled by one interface at a time It is therefore necessary to select one of the interfaces GPIB RS232 using the system menu IEEE 488 bus properties The instrument performs the following functions based on GPIB bus commands SH1 AH1 T5 L3 RL1 DCI SRI The instrument also recognizes the following general commands DCL Device Clear SDC Selected Device Clear EOI End or Identify Message Terminator Heli hin GTL Go To Local SHIELD SIGNAL GROUND LLO Local Lock Out aae SPD Serial Poll Disable SPE Serial Poll Enable RS232 bus properties To transfer the data using RS232 bus 8N1 data format is used i e each data word includes 8 bits no parity and one stop bit The communication speed can be set using the system menu Available values 150 300 600 1200 2400 4800 9600 and 19200 Bd Software handshake communication control XON XOFF can be set to control the transfer of the data through the bus RS 232 connector layout 4 Direction Note 5 00000 output transmitter 0000 9 5 input receiver ground 9 pin connector D SUB MALE Cable between the calibrator and PC configuration 1 1 Receive User Manual POWERTEK MC 140 Multifunction Calibrator Command syntax The commands described in this chapter can be issued through both buses IEEE 48
63. M C 1 40 Multifunction Calibrator Operation manual POWERTEK MC 140 Multifunction Calibrator Content Basic Information Preparation for operation Inspecting package contents selecting the installation location Power on Warm up time Replacement of fuse Safety precautions Description of controls Front panel Rear panel Control of Me COMDIAION cccsvcasessasescoscsvvesusvavnss0s cctvesvexsusassoevecsevasunsssscovucsusesussqusaswuetessounss tues 14 Selection of function Setting the value of output signal Setting relative deviation Change of value by factor of ten Connection disconnection of output terminals Setting the frequency Generation of calibrated voltage Generation of calibrated current Generation of non harmonic shapes Simulation of resistance and capacitance Generation of electric power and energy Generation of frequency Simulation of temperature sensors Multim t r i veiicssivesiissvesiessueveisisaseelessuuesivessssoiwsdsnsoiesetsdabevded sabuassugnsssduresbvoses Sabu sceiseiwassisnoucens 38 Basic menu Function selection Setting the measurement range Units of measurement Use of calculation formula Setting function parameters Start of measurement Zero function Simultaneous functions User Manual v35 MC 140 Multifunction Calibrator POWERTEK HeSt k ussobsj u ausmin s rasas 46 Basic menu Execution of test program Programming the test Setting the type of signals and the number of steps
64. MC140 asserts the SRQ control line on the IEEE 488 interface You can do a serial poll to read this bit to see if the MC140 is the source of an SRQ Master Summary Status bit 6 The MSS bit is set to 1 whenever bits ESB or MAV are 1 and enabled 1 in the SRE This bit can be read using the STB command in serial remote control in place of doing a serial poll Event Summary Bit bit 5 The ESB bit is set to 1 when one or more enabled ESR bits are set to 1 Conversely the ESB bit is set to 0 when no enabled ESR bits are set to 1 Message Available bit 4 The MAV bit is set to 1 whenever data is available in the MC140 IEEE488 Output Queue This message is used to synchronize information exchange with the controller The controller can for example send a query command to the MC140 and then wait for MAV to become TRUE The IEC 625 1 bus is available for other use while an application program is waiting for a device to respond If an application program begins a read operation of the Output Queue without first checking for MAV all system bus activity is held up until the MC140 responds SRE Service Request Enable Register The Service Request Enable Register is an 8 bit register that enables corresponding summary messages in the Status Byte Register Thus the application programmer can select reason for a device MC140 to issue a service request by altering the contents of the SRE The Service Request Enable Register is read with the SRE common
65. PHAS UNIT lt CPD gt DEG COS This command sets the method used to specify the phase shift between the output voltage and current DEG activates a mode where all entries are done using the angle in the range of 0 0 360 0 COS activates a mode where all entries are done using the power factor in the range of 1 000 to 1 000 LAG or LEAD LAG 0 180 LEAD 180 360 The unit of measurement remains valid even after the calibrator is switched off and back on 94 User Manual POWERTEK MC 140 Multifunction Calibrator If query is sent MC140 returns the set unit of measurement DEG COS Example PHAS UNIT DEG lt cr gt sets the angle as the unit of measurement PHAS UNIT lt cr gt the calibrator returns DEG SOUR POWE PHAS lt DNPD gt LEAD LAG This command sets the phase shift between the output voltage and current At the same time the power generation mode is set lt DNPD gt Represents the phase shift between the output voltage and current in degrees DEG setting or specified as a value of the power factor COS setting Technical Data chapter lists the acceptable ranges LEAD LAG This parameter is entered only when specifying the value of the power factor If the value is omitted LAG is used If query is sent MC140 returns the set value of the phase shift between the output voltage and current using standard exponential format Example 156 3
66. S 232 for connecting to PC WinObase SW for calibration of instrument MEACA Program module for multimeters Caliber Program module for multimeters User Manual W K MC 140 Multifunction ibrator nuf r For Uk amp European sales support service and deliveries Powertek UK 19 Cornwallis Road Bilton Rugby CV22 7HL United Kingdom New Tel 01788 519911 Fax 0870 0940135 Int l Tel 44 1788 519911 Int l Fax 44 870 0940135 Email info powertekuk com www powertekuk com For USA sales support service and deliveries Powertek US Inc 7 Third Street Holbrook NY 11741 USA Tel 1 631 615 6279 Fax 1 973 273 5893 Email info powertekus com www powertekus com User Manual v35 129
67. TESTER PROGRAM NAME Program number Program number Program number Program number Program number Program number Select Execute Exit Use the cursor buttons or the knob of the potentiometer to select the desired test program Press EXECUTE display button to execute the program or SELECT to edit the program Execution of test program After EXECUTE display button is pressed to execute the test program the calibrator displays a screen with set parameters of output signal and set configuration of the multimeter The calibrator displays PROGRAM NUMBER and STEP information above the main output data when the test program runs PROGRAM NUMBER xx where xx can be 00 to 09 designates the test program which currently runs STEP max 10 designates current step of the program 46 User Manual POWERTEK MC 140 Multifunction Calibrator After the test program concludes the calibrator displays a table showing the results The table includes the sequence number of each step set output value of the calibrator the value measured by the multimeter and the result of the respective test step PASS FAIL TESTER RESULTS Program number 1 9 errors STEP OUTPUT W INPUT U RESULT DOOM Pa LINA DO A DOTTO ft ft pt al pr pe pi DOTT 0G ER CE A DODDO DODDOS DONEAK ON Fa Total number of failed steps is displayed above the table xx ERRORS along with the designation of performed test After reviewing the resul
68. ain specification listed in the User s Manual and it is displayed in INPUT section This section displays the values measured by the multimeter The section includes following data a Main value of measured signal This line displays the measured value and the unit of measurement If the input signals exceed the permitted range OVERFLOW is displayed b Designation of selected function of the multimeter Symbolic display of selected function of the multimeter V DC mA DC mV DC R 4W Freq T TC T RTD SGS ACAL Display buttons section This line displays the symbolic descriptions which define the meaning of four related display buttons The respective meanings are as follows symbol button function increase set value 10 x 10 decrease set value 10 x Shape selection of signal shape only for U I F functions reversed polarity of output voltage and current only for DC U DCI functions EXIT move up one level only for F P E functions Calib enter the calibration menu SETUP enter the setup menu TC type selection of thermocouple sensor type only for T function RTD type selection of resistance temperature sensor type only for T function f enter the frequency of the signal only for U I function MODE select the unit of measurement only for AC P E function User Manual POWERTEK MC 140 Multifunction Calibrator Rear panel The rear panel of the calibrator includes ventilation holes power cord socket with fuse main
69. al for DC current range sort function output contact 2 of sort relay Umax 50Vpp Imax 100 mA PTLI resistance temperature sensor input terminal Li Umax 10Vpp R lt 2 kQ PTLU resistance temperature sensor input terminal Lu Umax 10Vpp R lt 2 kQ input terminal L on ranges 20 200 2000 mV TESTI identification terminal of actually used adapter TEST3 identification terminal of actually used adapter OVSMER common terminal of multimeter power supply source NC not used SIMHI RC simulator output current terminal Hi Jmax 10Vpp Imax 40mA SIMHU RC simulator output voltage terminal Hu max 10Vpp Imax 40mA NC not used multimeter input terminal for voltage current ranges Umax 25 Vpp Imax 25 mA high output terminal for DC voltage range Umax 20 Vss I high output terminal for DC current range max 25 mA NGI sort function output contact of relay max 50Vpp Imax 100 mA U PTHI resistance temperature sensor input terminal Hi Umax 10Vpp R lt 2 kQ U PTHU resistance temperature sensor input terminal Hu max 10Vpp R lt 2 kQ input terminal H on ranges 20 200 2000 mV TEST2 identification terminal of actually used adapter Functional inputs and outputs present at the connector can be best utilized using supplied cable adapters LCD display shows all information provided by the calibrator e g set parameters of the signal error messages setup information The display is divided to several information sections User Manual
70. alibration of resistance ranges external standard 100 Q and 1000 Q are required Connect to the AUXILIARY connector cable adapter Option 60 0 Q calibration e Make short of all four Option 60 input wires e Press SELECT display button to select the first calibration point 0 Q e After the value stabilizes press WRITE display button to write new calibration value 100 Q calibration e Connect resistance standard 100 Q to the input terminals Use four wire technique Press SELECT display button to select the second calibration point 100 Q After the value stabilizes write calibration value of resistance standard to the lower line and confirm by pressing WRITE 1000 Q resistance range calibration Make short of all four Option 60 input wires Press SELECT display button to select the first calibration point 0 Q e After the value stabilizes press WRITE display button to write new calibration value 1000 9 calibration e Connect resistance standard 1000 Q to the input terminals Use four wire technique Press SELECT display button to select the second calibration point 1000 Q After the value stabilizes write calibration value of resistance standard to the lower line and confirm by pressing WRITE User Manual v35 MC 140 Multifunction Calibrator POWERTEK e 20 mV voltage range calibration Make short of test wires of Option 60 adapter Press SELECT display button to select the first calibration point of 20
71. atically User Manual POWERTEK MC 140 Multifunction Calibrator e Disconnect input wires of Option 60 Exit the calibration mode AUTOCAL function To remove the effects of short term drift and thermal dependency of the simulation AUTOCAL function can be used It can only be activated in the calibration mode Use of AUTOCAL function influences the zero value of DC voltage generated by the calibrator Use of the function is recommended only after the calibrator reaches the operating temperature Procedure e Use a display button to enter the calibration mode Enter the calibration code and confirm by pressing ENTER Use the cursor buttons or potentiometer to select the AUTOCAL function from the calibration menu After the function is activated only one option OFFSET ACAL is provided Press SELECT display button to confirm the option The calibration includes two steps During the first step Hi Lo terminals must be shorted Use a short cable to connect the terminals During the second step the calibrator requests the disconnection of Hi Lo terminals Follow the instructions provided on the display when requested to do so short calibrator s Hi Lo terminals Press NEXT display button the calibrator performs internal measurement for ca 30 seconds During this period progress information is displayed in the bottom part of the display after the measurement completes the calibrator requests the disconnecti
72. bration zero calibration slope calibration zero calibration slope calibration zero calibration slope calibration zero calibration slope calibration zero calibration slope calibration zero calibration slope calibration Table Multimetr For calibration of ranges 2 10 V and 20 mA cable adapter Option 40 must be used For calibration of resistance ranges cable adapter Option 60 is necessary User Manual v35 MC 140 Multifunction Calibrator POWERTEK Full calibration procedure Following pages describe procedure of the full calibration Required instruments Following instruments are required for calibration 81 2 digit multimeter type HP3458A or Wavetek 1281 or other type with accuracy 0 001 on DC voltage Resistance shunt 10 mQ 100 mQ Burster 1280 or other type with accuracy 0 01 Resistance standard 100 Q 1000 Q Burster 1228 1229 or other type with accuracy 0 005 RLC meter BM 595 HP 4263A HP4278A ESI 2150 or other with accuracy 0 1 Counter HP 53181A HO 53130 BM 642 or other with accuracy 0 001 Powermeter 0 02 0 05 HP8903A Distortion analyzer and scope with bandwidth min 20 MHz are recommended for THD measuring of AC signals Calibration procedure 1 Connect the calibrator and the multimeter to the mains and let them switched on for at least three hours in a laboratory at 23 1 C Press SETUP display button to call up the setup menu and then CALIB display button to call up the calibration menu
73. cted to the output terminals The information section of the display shows the symbol which forr informs about the disconnection of output terminals Connect the object to be calibrated to the output terminals labeled Hi Lo Press OUTPUT button Red LED is lit above the OUTPUT terminals to indicate the connection of simulated resistance capacitance to the output terminals The information section of the display shows the symbol Simulated resistance capacitance is connected to output terminals JUTPUT Setting relative deviation Keep pressing the center cursor button until symbols appear under the relative deviation value A xx xxxx The value can be set using numeric keyboard potentiometer or cursor buttons Confirm the value by pressing display button or by pressing ENTER Limitations resulting from electronic simulation Electronic simulation of resistance and capacitance allows setting of a wide range of values with accuracy sufficient for calibration of common multimeters Electronic simulation has the following limitations measurement current supplied by the multimeter to be calibrated must not exceed the value specified by the calibrator s documentation If the current is exceeded the accuracy of simulated value is not guaranteed maximum peak voltage at Hi Lo terminals supplied by the multimeter to be calibrated must not exceed specified limits If the test voltage is exc
74. e VIII Deviation should not exceed specified limit Connect current output terminals of the calibrator to the current terminals of resistance shunt 10 mOhm Connect voltage input of standard multimeter to the voltage terminals of the resistance shunt Set range 100 200 mV on standard multimeter User Manual v35 MC 140 Multifunction Calibrator POWERTEK 10 11 12 13 Perform AC DC high current test on range 20 A according to the table VIII Deviation should not exceed specified limit Connect standard powermeter to the appropriate output and current terminals of the calibrator Perform AC DC power test according to the table IX Deviations should not exceed specified limits Connect voltage terminals of the calibrator to the Hi Lo and Sense H L terminals respectively of the standard multimeter Set resistance mode on multimeter and calibrator as well Use four wire technique for connection of multimeter for testing on nominal values bellow 10 kOhm Use autozero function of standard multimeter to eliminate thermoelectric voltages and residual resistances of multimeter and cables before measuring Connect adapter Option 70 to the AUXILIARY connector Perform resistance test according to the table X Deviations should not exceed specified limits Connect voltage terminals of the calibrator to the RCL meter Switch GND U and GND I OFF in SETUP MENU In common RCL meters measuring circuit must not be grounded Connect
75. e calibrated as well as the calibrator must be properly grounded Depending on the nature of the measurement instrument to be calibrated the following situations can occur Device under test GND U GND I U input floating ON ON I input floating U and I inputs galvanically disconnected not grounded U input floating I input floating galvanically connected terminals L both U and I inputs not grounded voltage input grounded current input floating voltage input floating current input grounded both voltage and current inputs grounded ATTENTION The voltage between calibrator s I and Lo outputs must not exceed 10 V User Manual v35 MC 140 Multifunction Calibrator POWERTEK Counters and oscilloscopes The calibrator can be used for basic calibration of the frequency ranges of multimeters and simple counters The calibrator provides the following functions e calibration of frequency functions up to 20 MHz using squarewave signal The function is activated by pressing F direct mode button and selecting HF mode Frequency can be set check of input sensitivity from 1 mV to 10 V in the frequency range up to 100 kHz The function is activated by pressing F direct mode button and selecting PWM mode Frequency amplitude and duty cycle can be set calibration of time period using squarewave signal whose period can be set up to 10 s with selectable duty cycle The function is activated by
76. e calibrator to the manufacturer 20 Cal date xx yyyy Displays the date of last calibration of the calibrator month year The parameter cannot be changed as it is automatically recorded when leaving the calibration mode 21 Serial No xxxxxx Displays the serial number of the calibrator The parameter cannot be changed 22 Time xx yy Displays real time The parameter can be changed using HOUR UP HOUR DO MIN UP MIN DO display buttons 23 Date XX Yy 222Z Displays real time The parameter can be changed using DAY UP MONTH UP YEAR UP YEAR DO display buttons 24 Time on display xx ON OFF If set to ON time and date are displayed in the upper part of the display If OFF is set time and date are not displayed ON is set by the manufacturer User Manual v35 MC 140 Multifunction Calibrator POWERTEK Calibration mode The multifunction calibrator includes a calibration procedure which allows calibration of the calibrator Zero point and slope of the characteristics of individual generation and measurement ranges are set during the calibration in predefined order The calibration can only be controlled using the buttons and menu on the calibrator The calibration mode includes AUTOCAL autocalibration function This function can automatically correct the short term instability of zero point for voltage ranges up to 20 V This function is not a part of the complete calibration procedure bu
77. e entered using one of the methods described above e g using the numeric keyboard cursor keys or the potentiometer Setting relative deviation using numeric keyboard keep pressing the center cursor button until symbols appear under the relative deviation value in the minor data section of the display enter the desired deviation and confirm the value by pressing display button or by pressing ENTER on the numeric keyboard the auxiliary line below the main data on the display displays the total value of output signal including the unit of measurement the value of the signal at output terminals is the value indicated by the main display A 10 00000 V Maximum relative deviation which can be entered is 30 000 The deviation can be positive or negative If negative deviation is desired press the display button labeled If positive deviation is then desired press button again The polarity of the relative deviation can be reversed using the cursor buttons or the potentiometer as well Setting relative deviation using cursor keys e keep pressing the center cursor button until symbols appear under the relative deviation value press lt gt A or v button The display now includes cursor marks which point to the active digit A and v buttons can be used to change the active digit lt gt buttons can be used to change the position of the cursor marks to get to the default scree
78. eady on for at least 60 minutes it requests the entry of the calibration code after CAL MODE display button is pressed CALIBRATION MENU Set calibration code BAGGA seLECT F A Eda Enter the correct calibration code using numeric keyboard and press ENTER User Manual v35 MC 140 Multifunction Calibrator POWERTEK e If incorrect calibration code is entered an error message appears on the display for approximately 3 seconds Err 20 Bad calib code e Ifcorrect calibration code is entered calibration menu appears 18 16 2888 13 48 CALIBRATION MENU U Current Current Power DC Power AC Resistance Select TE e Use a and v cursor buttons to move the cursor through the list VOLTAGE DC All DC voltage ranges calibration VOLTAGE AC All AC voltage ranges calibration CURRENT DC All DC current ranges calibration CURRENT AC All AC current ranges calibration POWER DC DC power calibration POWER AC AC power calibration RESISTANCE Resistance calibration CAPACITANCE Capacitance calibration FREQUENCY Amplitude in frequency mode calibration ANALOG INPUT Multimeter calibration AUTOCAL DC voltage offset correction 1 2 3 4 5 6 thes 8 9 10 11 Selection of calibration type After the calibration menu is displayed one of partial calibrations can be selected Use A and v cursor buttons to move the cursor through the list Having selected the required function to be calibrated pr
79. ecially e set relative deviation from main set value in e frequency for DC voltage current power energy functions e set value of current voltage or power factor phase for power energy functions User Manual v35 MC 140 Multifunction Calibrator POWERTEK e value of RO resistance and the type of resistance temperature sensor e cold junction temperature of TC sensors and the selected type of TC sensor e value of amplitude and shape type for frequency function Information section The information section located in the right part of the display displays additional information related to the selected function e symbol of connected mm or disconnected forr output terminals At the same time a LED located above the OUTPUT button is lit information about remote local control of the calibrator If the calibrator is controlled remotely REM is displayed If the calibrator is controlled locally using the keyboard LOCAL is displayed information about the use of 50 turn coil COIL x50 at the current output of the calibrator if this feature is turned on using the SETUP menu information about the type of connected cable adapter if used information about the grounding method of output terminals GND I GND U as set up using the setup menu Information about the uncertainty of the output signal This section displays the maximum error of the main value of the output signal The value is calculated using the m
80. ecommended frequencies can be used for calibration Specification of the calibrator is valid when recommended frequency is used User Manual v35 MC 140 Multifunction Calibrator POWERTEK CURRENT DC function nominal value A set limits A range A Table DC CURRENT CURRENT AC function nominal value A set limits A 5n 50n 40n 2u 2u 20u 20u lm 3m Table AC CURRENT zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration Other then recommended frequency can be used for calibration Specification of the calibrator is valid when recommended frequency is used User Manual POWERTEK MC 140 Multifunction Calibrator POWER DC function DC current calibration nominal value A set limits A range A zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration Table DC POWER POWER AC functio
81. ected from the transducer and the calibrator s output is connected to the transducer s input instead Simulation of thermal sensor is activated by pressing T direct mode button Pt and Ni resistance temperature sensors as well as K N R S B J T E thermocouples can be simulated The calibrator can be connected to transducer s input in one of the following ways e without the cable adapter directly to Hi Lo terminals Temperature of cold junction must be compensated by manual setting of RJ value The connection is similar to voltmeter connection with cable adapter Option 140 01 to the terminals Hi Lo Automatic compensation of TC sensors cold junction can be used here The cable adapter is equipped with build in Pt1000 temperature which measures ambient temperature After build in meter switching on button INPUT ON and with cable adapter 140 01 connected automatic compensation of TC cold junction temperature is performed When meter is deactivated INPUT OFF cold junction temperature RJ can be set manually only Connection of device under test is similar to the voltmeter connection using 140 01 cable adapter and OUTPUT terminals Temperature of cold junction must be compensated by manual setting of RJ value 112 User Manual POWERTEK MC 140 Multifunction Calibrator Connection of the transducer to be checked using 140 41 cable adapter Powortek Measurement Thanks to built in multimeter the calibrator can be used
82. ed label CA 140 70 is displayed in the right side If Option 140 41 is connected label CA 140 41 is displayed Cable adapter Option 70 can be used for four wire connecting of simulated resistance only In compare with direct two wire connection through output terminals Hi Lo accuracy of resistance is better with Option 70 see Technical data If Cable adapter Option 70 is connected to the AUXILIARY connector only resistance mode and resistance temperature simulation mode can be chosen The resolution of resistance and capacitance depends on the set value and corresponds to 0 01 of set value Minimum set value is 0 01 Q Resistance simulation range is 0 Q to 50 MQ Capacitance simulation range is 0 9 nF to 50 uF Control in the resistance and capacitance mode e press R C button on the calibrator The display shows the set resistance Ifyou want to simulate a capacitance press R C button again The display shows the set capacitance The display shows the following data main data of set resistance capacitance relative deviation of resistance capacitance uncertainty of set resistance capacitance total value of resistance capacitance if non zero deviation is set User Manual v35 MC 140 Multifunction Calibrator POWERTEK Set desired value of resistance capacitance or relative deviation The value can be set using numeric keyboard potentiometer or cursor buttons Simulated resistance capacitance is not yet conne
83. ed on or before the first change of the coefficient RO is set to 100 Q This setting corresponds to Pt 100 resistance thermal sensor Entry of cold junction temperature For thermocouples the temperature of cold junction can be entered The entry is performed by setting the RJ field in the auxiliary data section of the display e Select the thermocouple mode and keep pressing the center cursor button until symbols appear under the RJ xxxx x C value if C unit of measurement is used or under RJ xxxx x K value if K unit of measurement is used Set the value using numeric keyboard Confirm the value by pressing C or K display button or by pressing ENTER User Manual POWERTEK MC 140 Multifunction Calibrator 8 6 2000 12 46 0100 0 C AT BAA HOC TC tupe T Accuracy 8 4 C es a ee ees Automatic compensation of cold junction temperature Automatic cold junction TC sensors compensation can be performed when cable adapter Option 140 01 is used for simulating Ambient temperature measured by in cable adapter mounted Pt1000 sensor is taken as temperature of cold junction This automatic compensation is performed always when measuring of ambient temperature is activated on display push button INPUT ON green led lights When temperature measuring is not activated or cable adapter Option 140 01 is not connected manual compensation only is available Set value of RJ on the display to the appropriate ambi
84. eeded calibrator disconnects output terminals Overload message is displayed on the display User Manual POWERTEK MC 140 Multifunction Calibrator Frequency dependence of resistance and capacitance Electronic simulator of resistance can be used with DC and AC test signal Electronic simulator of capacitance can be used in AC range from 20 Hz to 1000 Hz User Manual v35 MC 140 Multifunction Calibrator POWERTEK Generation of electric power and energy The multifunction calibrator can generate exact value of electric power and energy P E function provides output voltage at Hi Lo terminals and output current at I I terminals Lo and I terminals are electrically connected Power setting range 0 0 VA to 2400 VA Voltage setting range 0 2 V to 240 V Current setting range 0 01 Ato 1OA Power factor setting range 1 to 1 phase 90 to 90 Frequency setting range DC 40 Hz to 400 Hz Control in power generation mode e Press P E button on the calibrator and then select AC or DC mode by pressing DC AC button The display shows set power value The display shows the following data main value of set power in selected unit of measurement VA W VAr power factor value PF in negative polarity LA or positive polarity LE or the phase shift between the voltage and current in frequency if AC power is selected voltage at Hi Lo terminals current through I I terminals uncertainty
85. efault screen press EXIT button or keep pressing the center cursor button until there under any value All values can be set using the buttons or the potentiometer Entry of the value using the potentiometer e press the potentiometer knob The display now includes cursor marks which point to the active digit turn the knob to change the active digit press the potentiometer knob to change to the mode which allows to change the value of the active digit and symbols are displayed above the active digit Active digit can be changed by turning the knob turn the knob to change back to the mode which allows to change the position of the active digit to get to the default screen keep pressing the center cursor button until there is no under any value or press EXIT button All values can be set using the buttons or the potentiometer Reverse polarity In DC voltage and DC current modes the polarity of the output value can be reversed by pressing display button symbol appears in front of the main data value User Manual v35 MC 140 Multifunction Calibrator POWERTEK Setting relative deviation All function modes of the calibrator except frequency mode allow a relative deviation of output value from the main data to be set using a separate display Relative deviation is displayed in the minor data section of the display and is designated with A 00 0000 symbol The relative deviation can b
86. emperature uncertainty 0 4 to 4 3 C see table bellow resolution 0 1 Ranges and uncertainties of TC sensor simulation with function AUTOCAL ON Lemmt 92 fn Lee 7 a KS 400 800 800 1000 1000 1500 1500 1820 e a J ss 210 100 100 150 150 700 700 1200 O a o as fas To 200 100 100 0 0 100 100 400 emt o as fae a 250 100 100 280 280 600 600 1000 a e oa ass 200 100 100 480 480 1000 1000 1372 e a asa 200 100 100 0 0 580 580 1300 pea a a y a e Uncertainties in the table are maximal uncertainties of TC sensor simulation Actual uncertainty for each set value of simulated temperature is determined by uncertainty of relevant resistance Actual temperature uncertainty is displayed on the calibrator display Actual uncertainties are always lower than those in above table User Manual POWERTEK MC 140 Multifunction Calibrator Multimeter Measuring Ranges and uncertainties function DC voltage DC current resistance temperature strain gauge sensors total range uncertainty resolution range DC voltage DCV Oto 12 0000 V 0 01 300 uV 100WV 10V DC voltage mVDC Oto 2 00000 V 0 02 7 uV 20mV 100nV 200mV luV 2V 10uV DC current Oto 25 0000 mA 0 015 300 nA 100 nA 20mA Freguency 1 000 Hz to 15 000 00 Hz 0 005 10 uHz 0 1 Hz M 77 R
87. ent temperature to compensate manually influence of cold junction Use of AUTOCAL function To remove the effects of short term drift and thermal dependency of the simulation AUTOCAL function can be used It can only be activated in the calibration mode Procedure is following e Use a display button to enter the calibration menu Enter the calibration code and confirm by pressing ENTER Use the cursor buttons or potentiometer to select the AUTOCAL function from the calibration menu After the function is activated only one option OFFSET ACAL is provided Press SELECT display button to confirm the option Proceed according to the instructions provided on the display Automatic calibration takes ca 8 10 minutes and prompts the user to short Hi Lo circuits and then to disconnect them After the calibration the calibrator remains in the calibration mode Press EXIT display button to return to normal display Do not connect anything to any terminals during the automatic calibration with the exception of the prompt to short the Hi Lo terminals The procedure is described in Calibration mode chapter User Manual v35 MC 140 Multifunction Calibrator POWERTEK Multimeter The calibrator includes a built in multimeter which can measure many electrical and non electrical values Besides DC voltage and current it can measure frequency temperature and when external strain gauge sensors is connected even other non electrical
88. entiometer as well Main power value is recalculated using new set current and existing setting of voltage and power factor 18 18 2888 12 39 1 190000 kW Phase 8 8 f 58 888 Hz U 230 0000 U i i Citi Citi 17 Exit User Manual POWERTEK MC 140 Multifunction Calibrator Setting the power factor AC power only e If W or Var is indicated the main power value can be changed by changing the power factor Change of power factor does not change the output apparent power Select P E mode and then keep pressing the center cursor button until appear under the power factor symbols PF x xxx LA LE or Phase xxx x The value can be set using numeric keyboard and confirmed by pressing LA LE button or by pressing ENTER Main power value is recalculated using new set power factor and existing setting of current and voltage The calculation is only made if active or reactive power is displayed 18 18 2886 12 39 1 150000 kW 50 000 Hz 05 00060 A ta ta 17 Exit In the power generation mode relative deviation cannot be set If the power factor is set to define the phase relation of voltage and current confirmation of entered value by pressing LA button means positive phase LE means negative phase Setting the energy Keep pressing the P E button to switch to the energy generation mode Auxiliary data display area shows the time in seconds and the energy delivered to output te
89. ered the calibrator displays the maximum minimum value which is allowed for the selected function Frequency F Set value of frequency is the main data on the display and the main parameter of the signal Main data can be set by direct entry using the numeric keyboard potentiometer or by changing the digit at the current cursor position The setting procedure is described in the Setting the value of output signal User Manual POWERTEK MC 140 Multifunction Calibrator If frequency larger or smaller than the calibrator s range is entered the calibrator displays an error message Value is too large small Generation of calibrated voltage The multifunction calibrator provides calibrated DC and AC voltage Output terminals for voltage ranges are labeled Hi and Lo at the front panel Depending on the setting of the calibrator voltage up to 1000 Vef can be present at the terminals DC voltage range is 0 to 1000 V AC voltage range is 100 uV to 1000 V Output voltage up to 20 V is available at AUXILIARY connector It can be used only with cable adapter Opt 140 41 Control in the voltage mode e Press U button on the calibrator and then select AC or DC mode by pressing DC AC button The display shows the following data main data of set voltage relative deviation uncertainty of output voltage frequency when AC voltage is generated total value of output voltage when
90. erminal connection with use of Option 70 or Option 140 41 Cable adapters For two wire connection from the terminals Hi Lo na the front panel add to the specified uncertainty next 10 mOhm Capacitance summary range 0 9 nF to 50 uF resolution 41 2 digit Capacitance uncertaint 0 9000 nF 2 500 nF 0 5 15 pF 1000 Hz 2 500 nF 10 000 nF 0 5 5 pF 1000 Hz 10 000 nF 50 00 nF 0 5 1000 Hz 50 00 nF 0 2500 uF 0 5 1000 Hz 0 2500 uF 1 0000 uF 0 5 500 Hz 1 0000 uF 2 500 uF 1 300 Hz 2 500 uF 5 000 uF 1 300 Hz 5 000 uF 10 000 uF 1 5 300 Hz 10 000 uF 50 00 uF 2 0 300 Hz Maximal allowed voltage on output terminals is 8 V p AC and DC power energy summary voltage range 0 2 V to 240 V current capability of voltage output depends on the voltage range summary current range 2mAtol0A maximal voltage on current output depends on the current range electric power range 0 0004 to 2 4 kVA phase angle PF range 180 to 180 1 to 1 in PF phase angle PF resolution 0 1 0 001 in PF time period range 1 1 s to 1999 s time setting resolution 0 1s time period accuracy 0 01 0 ls frequency range DC 40 Hz to 400 Hz frequency resolution 6 digit minimum step 0 001Hz DCV uncertainty See table of DCV uncertainty User Manual v35 MC 140 Multifunction Calibrator POWERTEK DCI uncertainty 2 00000 mA 20 00000 mA 0 05 0 010 20 0000 mA 200 0000 mA 0 05 0 005 0 200000 mA
91. erminals located at 140 41 cable adapter I and I output terminals located at calibrator s front panel must not be connected simultaneously Operating examples chapter provides examples of correct connection during simultaneous measurements User Manual v35 MC 140 Multifunction Calibrator POWERTEK Tester The calibrator includes an application SW which facilitates automated testing of regulators and transducers Tester function combines the use of the calibrator as the source of precision signal with automatic change of output signal while the response of the unit being tested is measured by the calibrator s built in multimeter The calibrator is capable of subsequent processing of measured values providing PASS FAIL indication Tester function comprises of performance of a programmed sequence of up to 10 steps For each step the type and value of output signal and the type and tolerance of input signal can be defined If the input signal is not within the tolerance limit the respective step of the test program is considered failed The time between individual steps can be set as well Basic menu Press SETUP display button to enter the Tester mode After the button is pressed the bottom line of the display shows TESTER option Press the respective display button to open the menu of test programs The menu includes a sequence number of the test program date of creation and program name 17 7 2888 15 66 SETUP
92. esistance 0 000 to 2 500 00 Q 0 02 10 mQ 20Q 1mQ 2002 1mQ 2kQ 10mQ 0 1 C 0 01 C 0 1 C see Table 0 05 10 uV uncertainty of sensor 200 000 to 850 000 C 7 250 00 to 1820 00 C depends on sensor Temperature PT sensor Temperature TC sensor 75 Strain gauge sensors Uncertainties are valid after performing ZERO correction in set mode Measuring current 1 mA For Pt 1000 sensor maximum temperature is 350 C Maximum measured resistance is 2 kQ 4 Maximum allowed analogue input DC voltage is 2 V Supply voltage Max current Input resistance Sensitivity Displayed unit 2 to 10 V DC non symmetrical 40 mA min 100 MQ setable in range 0 5 mV to 100 mV V user s defined Ranges and uncertainties of temperature measuring with TC sensor 0 400 400 1000 1000 1770 ea 5 is ou pret Go fie T B rangere 400 800 800 1000 1000 1500 1500 1820 pret os T N 210 100 100 150 150 700 700 1200 ena a S a a o e eno s os fa 250 100 100 280 280 600 600 1000 200 100 100 480 480 1000 1000 1372 e a J es o 200 100 100 0 0 580 580 1300 pea a 5 J 5s a 200 100 100 0 0 100 100 400 Sorting function Output GO NG Triggering 1 x make 1 x break contacts 50Vpp 100mA external internal manual User Manual v35 MC 140 Multif
93. ess SELECT display button The following data are shown the following example is valid for VOLTAGE DC range User Manual POWERTEK MC 140 Multifunction Calibrator CALIBRATION MENU Voltage DC Any 26mU AMY 28GmU 6 V 2 U B U 28 U B U 288 U 200 U 200 U 1kU SELECT Et The table lists recommended calibration points Having selected the required calibration point using SELECT display button the following data are shown CALIBRATION MENU Voltage DC Range 26m Value GmV 00327679 666661661111111111111111 WRITE skip Exit Display buttons have the following meaning WRITE new calibration value is entered into the memory old value is irreversibly lost SKIP current calibration step is skipped old value is retained in the memory EXIT current calibration is terminated After this button is pressed the calibration memory hold all data old or new entered and the calibrator returns to the calibration menu It is not necessary to calibrate all ranges calibration of only selected ranges is possible by skipping the ranges which do not need to be calibrated Moreover the display shows the range which is being calibrated RANGE and the value to be set at the external standard multimeter VALUE Setting the new calibration data Use a v lt gt cursor buttons to set such main data on the display when the output signal measured by external standard multimeter reaches the required calib
94. et using numeric keyboard potentiometer or cursor buttons Confirm the value by pressing display button or by pressing ENTER Setting the amplitude Signal amplitude in Volts can only be set in PWM mode e Select the frequency mode and keep pressing the center cursor button until symbols appear under the amplitude value U x xxx V User Manual POWERTEK MC 140 Multifunction Calibrator e Set the value using numeric keyboard and confirm by pressing V display button or by pressing ENTER 18 18 2886 12 42 Hmm 1 000000 kHz At BA 6880 PWM 58 Accuracu 4 6858 Oou 7 7 F Exi Setting the attenuation Signal attenuation in dB can only be set in HF mode Attenuation can be set in steps of 0 10 20 30 dB e Select the frequency mode and keep pressing the center cursor button until symbols appear under the attenuation value a x xxx dB Set the value using numeric keyboard and confirm by pressing dB display button or by pressing ENTER If other than permitted value is set the closest permitted value is used User Manual v35 MC 140 Multifunction Calibrator POWERTEK Setting the duty cycle Duty cycle can only be set in PWM mode e Select the frequency mode and keep pressing the center cursor button until symbols appear under the duty cycle value PWM xx e Set the value using numeric keyboard cursor buttons or potentiometer and confirm by pressing di
95. fferent from the range impedances The output stage increases the permitted current load of the output ATTENTION The simulator s output voltage Hi Lo terminals is limited to 8 Vpk User Manual POWERTEK MC 140 Multifunction Calibrator Frequency synthesizer Frequency synthesis circuitry allows fine setting of frequency in the whole calibrator s range Frequency synthesis uses DSP circuits with basic frequency 20 MHz Power and energy mode In the power energy mode the calibrator supplies the set voltage to Hi Lo terminals and the set current through I I terminals Both signals have defined phase shift according to the set power factor if AC mode is set channel Phase shift Current generator amplifier Digital phase comparator U channel generator 20 amplifier g amplifier Feedback amplifier Output voltage is obtained from 200 V AC voltage range Output current is obtained from 2 or 20 A current range The output current generator is independent of the output voltage generator and synchronized by the microprocessor s crystal oscillator There is a phase shift between the signals of the output current generator and output voltage generator according to the set power factor The phase of output current and voltage is compared by a phase comparator and compared to a reference value representing the set power factor the output drives a voltage controlled phase shift element which controls the phase of
96. for basic calibration of some sources of electrical signals The table lists the type of adapter which is necessary for a particular measurement Applications and desired options DC voltage to 12 V Opt 40 or Opt 140 41 DC current to 25 mA Opt 40 or Opt 140 41 Impulse frequency to 15 kHz Opt 40 or Opt 140 41 Temperature through external TC sensor Opt 140 41 Temperature through external RTD sensor Opt 60 or Opt 140 41 Non electric quantities with strain gauge sensors force pressure Opt 140 41 torque etc Resistance to 2 kQ Opt 60 or Opt 140 41 Voltage current and frequency 10 V voltage range 20 mA current range and frequency up to 15 kHz can be measured using Opt 40 cable The connection simple The cable is connected to calibrator s AUXILIARY connector the other end has bananas which connect calibrator to the measured object When making the connection observe the polarity and connect the calibrator s L terminal to the L common or grounded terminal of the measurement instrument To activate the measurement select the respective function mode and press INPUT to measure the input value ATTENTION The input terminals of the built in multimeter are floating Maximum voltage between the input terminals and the chassis is 15 Vpk If this value is exceeded the multimeter can be damaged If the measurement range is exceeded the calibrator displays an error message input terminals are
97. g picture shows the control part of the front panel 1 Display buttons There are five buttons below the display whose meaning changes depending on the contents of the display These buttons usually call up the MENU allow range change step logging of values etc 2 Cursor buttons Using these buttons the cursor can be controlled within allowed limits on the display The keyboard includes two buttons lt gt which allow the cursor to be set to the required position at the display The cursor can be moved to the left or right These buttons are usually used to step through the options and to move from one option to another or between the menu levels Numeric values can be set in some control modes as well In these cases the buttons marked A v allow the user to increase or decrease the number at the cursor button The central button is used to confirm the selection ENTER or to SELECT from the menu 3 Potentiometer The potentiometer integrates several functions By turning the knob to the left or right the user can e step through the options User Manual v35 MC 140 Multifunction Calibrator POWERTEK e enter numeric values The function of the potentiometer can usually be performed by the cursor buttons The central button is used to confirm the selection ENTER 4 Numeric keyboard The keyboard allows the entry of numeric values on the display The central button is used to confirm the selection ENTER CANCEL
98. ge includes the following items e Multifunction calibrator e Power cord e Spare fuse T4L250 T T8L250 T Operation manual Test report Test cable 1000V 20 A 2 pcs Cable adapter Option 40 Cable adapter Option 60 e Cable adapter Option 70 e RS 232 cable The calibrator should be powered by 230 115 V 50 60 Hz mains It is a laboratory instrument whose parameters are guaranteed at 23 2 C Before powering on the instruments place it on a level surface Do not cover the vents at the bottom side and the fan opening at the rear panel Power on e Before connecting the calibrator to the mains check the position of the mains voltage selector located at the rear panel Plug one end of the power cord into the connector located at the rear panel and connect the other end of the power cord into a wall outlet Switch on the mains switch located at the rear panel Flat display is lit The calibrator performs internal hardware checks for 5 seconds After the tests conclude the calibrator resets to its reference state i e the following parameters are set Function DC voltage Range 20 V Set value 10 V Output terminals OFF GPIB address of the calibrator is factory preset to 2 This value is valid until the user changes it Note The calibrator resets to its reference status in case of power switching off and reconnection Warm up time The calibrator works after it is switched on and the initial checks complete Specified parameters are on
99. gh power line connection Ground loops can result apparently worse noise short term stability or non harmonic distortion of output signal If necessary use toroidal chokes to suppress this products e Meter average 05 In all other items in SETUP MENU the setting of parameters don t influence accuracy of the calibrator Use sin waveform of the output signal on all AC tests Performance verification may be performed after warm up period i e 1 hour after switching on Calibrator have to be in temperature stabilize condition at minimum 8 hours before performance verification test is started User Manual POWERTEK MC 140 Multifunction Calibrator Basic steps of the performance verification test Verification procedure consists of following steps 20 V DC voltage test with linearity check DC voltage internal ranges 20 mV 200 mV 2 V 240 V 1000 V test 20 V AC voltage test with linearity check AC voltage internal ranges 20 mV 200 mV 2 V 20V 240 V 1000 V test 200 mA DC current test with linearity check DC current internal ranges 200 uA 2 mA 20 mA test AC current internal ranges 200 uA 2 mA 20 mA 200 mA test AC DC high current ranges 2 A 20 A test AC DC power 480VA 2400VA AC power with PF 0 0 5 0 5 test Resistance test in points 10 100 1k 10k 100k 1M 10M 50M Ohm on DC Capacitance test in points In 10n 100n lu 10u 50u F on frequency 1000 Hz Frequency nominal value kHz test Multimeter internal ra
100. he range selection menu and to return to the basic display If you want to reset a coefficient to original setting press CLR display button Each measurement function of the multimeter has its own independent set of coefficients Setting function parameters Some measurement functions have additional parameters When measuring the temperature using RTD sensors RO resistance at 0 C can be set when measuring the temperature using TC sensors the temperature of cold junction can be set and when measuring using SGS sensors supply voltage of the bridge can be set Original settings are listed below TRTD RO 100 Q TTC RJ 23 C SGS Voltage 5 V The parameters can be changed as follows e Press METER direct control button and select a function then use cursor buttons to select the line which includes the function parameter Enter new value using numeric keyboard Confirm the value by pressing ENTER After setting the coefficients use A or v cursor buttons to switch to the previous or next menu option The same can be achieved using the potentiometer after pressing the knob Press EXIT display button the close the range selection menu and to return to the basic display User Manual v35 MC 140 Multifunction Calibrator POWERTEK Start of measurement To start a measurement Press INPUT direct control button in the basic state of the calibrator INPUT field on the display shows the measured value The measurement is
101. he set value of current using standard exponential format Example 20 547mV is returned as 2 054700e 002 Positive numbers are not preceded with sign SOUR CURR LEVE IMM AMPL lt DNPD gt This command activates the generation of DC or AC current depending on the DC or SIN parameter of the FUNC command lt DNPD gt Represents the value of DC or AC current expressed in Amperes Negative value is accepted for DC current Technical Data chapter lists the acceptable ranges If query is sent MC140 returns the set value of current using standard exponential format Example 20 547mA is returned as 2 054700e 002 Positive numbers are not preceded with sign SOUR RES LEVE IMM AMPL lt DNPD gt This command activates the generation of a resistance lt DNPD gt Represents the value of the resistance in Ohms Technical Data chapter lists the acceptable ranges If query is sent MC140 returns the set value of resistance using standard exponential format Example 20 5 is returned as 2 050000e 001 SOUR CAP LEVE IMM AMPL lt DNPD gt This command activates the generation of a capacitance lt DNPD gt Represents the value of the capacitance in Ohms Technical Data chapter lists the acceptable ranges If query is sent MC140 returns the set value of capacitance using standard exponential format Example 20 5nF is returned as 2 050000e 008 SOUR POWE
102. ing mode is not functional the user cannot correct the fault Contact the manufacturer Hidden faults can cause different symptoms and be caused by different causes Usually they cause instability of some parameter Hidden defects can be caused by unacceptable distortion degraded insulation etc In this case contact the manufacturer Sometimes it seems that the calibrator has hidden defect when the rules for correct operation are not adhered to In this case the fault is caused by the operator Most frequent cases of false hidden defects e mains voltage out of tolerance limits or unstable e wrong grounding of the measurement circuit bad connection of the ground terminal of the mains outlet or several ground connection when grounding loops are formed proximity to sources of intensive influence whose products are spread through the mains or propagated by the electromagnetic field strong electrostatic or electromagnetic field which can cause major instability during calibration using higher impedance User Manual v35 MC 140 Multifunction Calibrator POWERTEK Verification test Procedure recommended for verifying parameters of the calibrator is described in this chapter During tests it is not necessary access to the interior of the instrument Required equipment Following instruments are required for performance verification test 81 2 digit multimeter type HP3458A or Wavetek 1281 or other type with accuracy 0 001
103. lay shows the symbol mmm Calibrated current corresponding to set parameters is driven by the output terminals If COILx50 function is activated see below Setup functions menu the optional 50 turn coil must be connected to output terminals The calibrator can be used to calibrate 50 uA to 1000 A ammeters The calibrator generates AC and DC current within the range up to 20 A CAUTION If GND terminal is connected to Lo I terminals it is prohibited to connect external load to GND Hi or GND I terminals Such connection can damage the calibrator User Manual v35 MC 140 Multifunction Calibrator POWERTEK Overloading the terminals When external circuit connected to current output terminals is disconnected or there is higher voltage at the load than permitted the calibrator disconnects the output terminals and displays Overload I output message The same message can be displayed when 50 turn coil is used for AC current output at frequencies above 80 Hz It depends on the set current and the type of ammeter connected If the output terminals are disconnected due to time limitation of output current over 10 A the calibrator displays Current timeout message Generation of non harmonic shapes The multifunction calibrator can generate non harmonic periodic signals with predefined shape To allow the setting of a non harmonic output shape the calibrator must be switched to AC U or AC I mode In both cases an
104. le Limitation of multimeter s function The multimeter cannot be used If the multimeter is activated FAIL error message appears The multimeter can only be used to measure the external temperature using a Pt100 sensor built into the adapter The multimeter can be used without limitations and in full ranges SGS sensors can be connected The multimeter can be used without limitations and in full ranges SGS sensors cannot be connected The multimeter can be used in the following ranges DC voltage up to 12 V DC voltage up to 25 mA frequency up to 15 kHz The multimeter can only be used in the following ranges temperature using TC sensors temperature using RTD sensors resistance up to 2 kOhm SGS sensors cannot be connected Multimeter cannot be used If the multimeter is activated FAIL error message appears Method of connection 140 01 cable adapter connected onto calibrator s terminals 140 41 cable adapter connected onto calibrator s terminals OUTPUT 140 41 AUX 140 41 cable adapter connected onto calibrator s terminals OUTPUT 140 41 PANEL Option 40 Cable connected onto calibrator s AUXILIARY connector Option 60 cable end connected onto calibrator s AUXILIARY connector Cable adapter Option 70 installed on AUXILIARY connector User Manual POWERTEK MC 140 Multifunction Calibrator If current is drawn from I and I output t
105. lt cr gt the calibrator returns HIGH or HI50 SOURce subsystem This subsystem allows to control the individual functions of MC140 calibrator Keyword Parameters SOURce FUNCtion SHAPe lt CPD gt DC SINusoid PULPositive PULSymmetrical PULNegative RMPA RMPB TRIangle LIMSinusoid PWMPositive PWMSymmetrical PWMNegative SQUare VOLTage LEVE IMMediate AMPLitude lt DNPD gt CURRent LEVE IMMediate AMPLitude lt DNPD gt RESistance LEVE IMMediate AMPLitude lt DNPD gt CAPacitance LEVE IMMediate AMPLitude lt DNPD gt POWEr LEVE IMMediate AMPLitude lt DNPD gt PHASe UNITS lt CPD gt DEG COS ADJust lt DNPD gt VOLTage LEVE IMMediate AMPLitude lt DNPD gt CURRent LEVE User Manual POWERTEK MC 140 Multifunction Calibrator IMMediate AMPLitude EARTh VOLTage CURRent AUXiliary ADAPter FREQuency CW DUTY VOLT ATTE TEMPerature UNITs SCALe THERmocouple LEVE IMMediate AMPLitude RJUNction TYPE PRT LEVE IMMediate AMPLitude TYPE NRESistance lt DNPD gt lt CPD gt ON OFF 0 1 lt CPD gt ON OFF 0 1 lt CPD gt ON OFF 0 1 l
106. ly guaranteed after the instrument warms up for 60 minutes During this period the instrument cannot be calibrated The display shows cannot access the calibration message if calibration is attempted during this period User Manual v35 MC 140 Multifunction Calibrator POWERTEK Replacement of fuse The calibrator includes a fuse located in the mains connector at the rear panel Replace the fuse as follows Switch off the calibrator Remove the end of power cord from the mains connector at the rear panel Insert the blade of a flat screwdriver into the opening cut in the mains voltage selector and pull out the fuse holder Remove the fuse and replace it with new fuse of the same rating Safety precautions The instrument has been designed in Safety Class I according to EN 61010 1 The design reflects the requirements of A2 amendment of the standard Safety is ensured by the design and by the use of specific component types The manufacturer is not liable for the damage caused by modification of the construction or replacement of parts with non original ones Safety symbols used on the equipment Warning reference to the documentation Warning risk of electric shock Danger high voltage User Manual POWERTEK MC 140 Multifunction Calibrator Description of controls Front panel The front panel of the calibrator includes a flat luminiscent display control buttons and output terminals The followin
107. mV range 0 mV After the value stabilizes press WRITE display button to write new calibration value Connect external standard multimeter set to the mVDC function to the Hi Lo output terminals Use test wires from basic delivery Connect HU test wire of cable adapter to the Hi terminal on the calibrator and LU test wire of cable adapter to the Lo terminal on the calibrator Both build in meter and external multimeter are in parallel If necessary adjust zero of standard multimeter before calibration Press SELECT display button to select 19 mV calibration point Red LED is lit above OUTPUT button Set such output voltage on the calibrator that standard multimeter indicates 19 000 mV After the value stabilizes press WRITE display button to write new calibration value Terminals of the calibrator will switch OFF automatically Disconnect input wires of Option 60 200 mV voltage range calibration Make short of test wires of Option 60 adapter Press SELECT display button to select the first calibration point of 200 mV range 0 mV After the value stabilizes press WRITE display button to write new calibration value Connect external standard multimeter set to the mVDC function to the Hi Lo output terminals Use test wires from basic delivery Connect HU test wire of cable adapter to the Hi terminal on the calibrator and LU test wire of cable adapter to the Lo terminal on the calibrator Both build in meter and external multi
108. mage The instrument to be calibrated can be connected either directly to the front panel terminals or through Opt 140 01 cable adapter If L terminal of the instrument to be calibrated is not grounded then calibrator s Lo terminal should be grounded GND U ON see Setup menu chapter Connection of a multimeter to be calibrated voltage range to calibrator s output terminals Powertek Truncated waveform with defined distortion can be used for testing of multimeters User Manual POWERTEK MC 140 Multifunction Calibrator Connection of a multimeter to be calibrated voltage range to the terminals of 140 01 cable adapter Current ranges All DC and AC current ranges are connected to calibrator s I I terminals If current is drawn from calibrator s I and I output terminals I and I output terminals located at 140 41 cable adapter must not be connected simultaneously When using the current output under heavy load 10 to 20 A the runtime is limited to 0 to 60 s The runtime depends on the set current and it is controlled by the microprocessor The user cannot extend the runtime if longer runtime is required the output terminals must be unloaded some time must elapse for example min and the load can then be connected again When feeding 2 to 20 A current to the output terminals the output voltage must not exceed approx 1 5 Vef If the current induces higher voltage on the load the calibrator di
109. meter and switches it on Example to set the multimeter to DC voltage 2000mV measurement mode MEAS CONF MVOLT lt cr gt MEAS CONF RES This command selects the function RES range 0 200062 of internal multimeter and switches it on Example to set the multimeter to resistance measurement mode MEAS CONF RES lt cr gt MEAS CONF FREQ This command selects the function FREQ of internal multimeter and switches it on Example to set the multimeter to frequency measurement mode MEAS CONF FREQ lt cr gt MEAS CONF TEMP RTD TYPE lt CPD gt PT385 PT392 This command selects the function RTD of internal multimeter sets the type of resistance temperature sensor and switches the multimeter on Example to set the multimeter to resistance temperature sensor type PT385 measurement mode MEAS CONF TEMP RTD TYPE PT385 lt cr gt If query is sent MC140 returns the set type of approximation table PT385 PT392 MEAS CONF TEMP RTD NRESistance lt DNPD gt This command selects the function RTD of internal multimeter sets the nominal resistance of the resistance temperature sensor to 0 C and switches the multimeter on 10Q to 2kQ can be set lt DNPD gt Represents the nominal resistance in Ohms Example to set the multimeter to resistance temperature sensor Pt100 measurement mode MEAS CONF TEMP RTD NRES 100 lt cr gt User Manual POWERTEK MC 140 Multifunction Calibrator
110. meter are in parallel If necessary adjust zero of standard multimeter before calibration Press SELECT display button to select 190 mV calibration point Red LED is lit above OUTPUT button Set such output voltage on the calibrator that standard multimeter indicates 190 00 mV After the value stabilizes press WRITE display button to write new calibration value Terminals of the calibrator will switch OFF automatically Disconnect input wires of Option 60 2000 mV voltage range calibration Make short of test wires of Option 60 adapter Press SELECT display button to select the first calibration point of 2000 mV range 0 mV After the value stabilizes press WRITE display button to write new calibration value Connect external standard multimeter set to the mVDC function to the Hi Lo output terminals Use test wires from basic delivery Connect HU test wire of cable adapter to the Hi terminal on the calibrator and LU test wire of cable adapter to the Lo terminal on the calibrator Both build in meter and external multimeter are in parallel If necessary adjust zero of standard multimeter before calibration Press SELECT display button to select 1900 mV calibration point Red LED is lit above OUTPUT button Set such output voltage on the calibrator that standard multimeter indicates 1900 0 mV After the value stabilizes press WRITE display button to write new calibration value Terminals of the calibrator will switch OFF autom
111. minals Current ranges are connected to I I terminals frequency output is connected to FREQ terminal All other functions voltage resistance capacitance are connected to Hi Lo terminals GND terminal is connected to the chassis of the calibrator It is connected to the ground terminal of the mains plug Using the SETUP MENU of the calibrator the output terminals of the calibrator can be grounded as well Grounding is done internally by connecting Lo and GND terminals using a relay This circuit design is suitable for most calibrations when the object multimeter being calibrated is floating AUXILIARY connector creates input of internal multimeter It includes a limited range of output signals of the calibrator as well The layout of individual pins and their meanings are listed in the following table Auxiliary connector can be used with one of cable adapters Opt 40 60 70 Opt 140 41 Calibrator can recognize which type of adapter is connected and displays the information on front panel display User Manual v35 MC 140 Multifunction Calibrator POWERTEK signal Limitation OVSMER common terminal of multimetr power supply source GND ground protection earth SIMLI RC simulator output current terminal Li Umax 10Vpp Imax 40mA SIMLU RC simulator output voltage terminal Lu Umax 10Vpp Imax 40mA GND ground protection earth common terminal of multimeter input low output terminal for DC voltage range low output termin
112. mmunication handshake Display buttons can be used to select OFF or Xon Xoff Perfect communication with the PC requires equal values set at the PC and the calibrator 13 Keyb beep xx ON OFF User Manual v35 MC 140 Multifunction Calibrator POWERTEK This parameter allows the acoustic indication of pressed buttons to be switched off or on ON and OFF display buttons can be used to switch the indication off or on ON is set by the manufacturer This parameter does not control the acoustic indication of output voltages over 100 V and identification of errors 14 Keyb volume xx UP DOWN This parameter allows the volume of acoustic indication to be set UP and DOWN display buttons allow to set the value in the range of 00 to 15 The bigger the value the louder sound This parameter controls the volume of keyboard beep if switched on indication of output voltages over 100 V and identification of errors when controlling the calibrator 15 Brightness xx UP DOWN This parameter sets the contrast of the display UP and DOWN display buttons allow to set the value in the range of 00 to 15 16 Rotary change xx ON OFF This parameter controls the range of functions of the potentiometer If ON is set the potentiometer can move the cursor both to the left and right lt and gt symbols and up and down a and v symbols If OFF is set the potentiometer can move the cursor up and down only A and v symbols 17
113. n Table AC POWER Other then recommended frequency can be used for calibration Specification of the calibrator is valid when recommended frequency is used User Manual v35 MC 140 Multifunction Calibrator POWERTEK RESISTANCE function nominal value Q set limits Q range Q 10 50 10 50 10 50 50 100 50 100 50 100 100 400 100 400 100 400 400 2 k 400 2 k 400 2 k 2k 10k 2k 10k 2k 10k 10k 40k 10k 40k 10k 40k 40 k 200 k 40 k 200 k 40 k 200 k 200k 1 M 200k 1M 200k 1M 1M 4M 1IM 4M 1M 4M 4M 20M 4M 20M 4M 20M 20M 50 M 20M 50 M Table R For resistance mode calibration cable adapter Option 70 or Option 140 41 must be used Connect standard multimeter to the four output terminals on the currently connected cable adapter User Manual POWERTEK MC 140 Multifunction Calibrator CAPACITANCE function nominal value F set limits F range F 900 p 2 5n 900 p 2 5n 900 p 2 5n 5Sn 10n Sn 10n Sn 10n 10n 50n 10n 50n 10n 50n 50n 250n 50n 250n 50n 250n 250n lu 250n lu 250n lu lu 25u lu 2 5u lu 25u 2 5u 10u 2 5u 10u 2 5u 10u 10u 50u 10u 50u 10u 50u Table C FREOUENCY function amplitude calibration nominal value V set limits V range V 0 0 10u zero calibration 10 lm 10 slope calibration Table F ANALOG INPUT multimeter function voltage current resistance calibration zero calibration slope cali
114. n Connect adapter to the AUXILIARY connector Select RESISTANCE from the calibration menu Select four wire resistance measurement function on the external multimeter Adjust the zero value of the external multimeter including the cables if necessary Connect all four wires of adapter Option 70 to the input terminals of external multimeter Use four wire technique Connect correct terminals and wires Measure the resistance in the recommended calibration points using the multimeter and write the values into the calibrator Use numeric keyboard potentiometer or cursor buttons to enter the value Perform the adjustment for all calibration points as usual Press WRITE display button to confirm correct values Disconnect adapter Option 70 from AUXILIARY connector User Manual POWERTEK MC 140 Multifunction Calibrator CALIBRATION MENU Resistance Range 16 ft Value Meter 010 0244 1 WRITE skip Exit Capacitance ranges calibration Capacitance ranges calibration is performed by both calibration methods i e setting the checked value and measuring this value with the standard instrument as well as setting the nominal value of the calibrator s measurement range on the external multimeter by adjusting the calibrator s output If the entry of measured value to the calibrator is required VALUE METER is displayed at the respective calibration point The value on the calibrator s display has the same format as the
115. n keep pressing the center cursor button until there is no under any value or press EXIT button All values can be set using the buttons or the potentiometer User Manual POWERTEK MC 140 Multifunction Calibrator Setting relative deviation using potentiometer e keep pressing the center cursor button until symbols appear under the relative deviation value in the minor data section of the display press the potentiometer knob The display now includes cursor marks which point to the active digit Turn the knob to change the value of the active digit press the potentiometer knob to change to the mode which allows to change the position of the active digit and symbols are displayed above the active digit The position of the active digit can be changed by turning the knob turn the knob to change back to the mode which allows to change the value of the active digit to get to the default screen keep pressing the center cursor button until there is no under any value or press EXIT button All values can be set using the buttons or the potentiometer If a non zero relative deviation is set the main data can be changed as well The value of the output signal is always recalculated If a zero relative deviation is set the minor data section is not displayed Change of value by factor of ten All functions of the calibrator allow the increase of the output value by 10 or reduction of the output value by 10
116. n the display shows the following symbol During mode change output terminals are always disconnected Output terminals are disconnected also when changing between voltage and current ranges or when changing between AC and DC ranges is performed If voltage over 100 V is set in the voltage mode special algorithm must be followed to connect the output terminals The algorithm is described in the Generation of calibrated voltage chapter of this Manual Setting the frequency Frequency can only be selected in AC voltage ACU mode AC current ACI mode power P E mode and frequency f mode In each mode the frequency has a slightly different meaning and the frequency is therefore set in a different manner AC voltage ACU AC current ACI Set value of frequency is included in the minor data section of the display in ACU ACI P E modes Frequency change e First select the AC voltage or AC current mode by pressing U I AC buttons or selecting the P E mode using the display Frequency value f xxx xx Hz appears in the minor data section of the display f symbol is displayed above one of the display buttons After f display button is pressed symbols appear below the frequency value Numeric keyboard can be used to enter the desired value Press Hz or kHz to confirm the value The value can be set using the buttons or the potentiometer If too large or too small value is ent
117. n to select the first calibration point 0 mV Make short on adapter Option 40 After the value stabilizes press WRITE display button to write new calibration value Connect input voltage terminals of external multimeter to Hi Lo output terminals of the calibrator You can use test wires which are part of basic delivery Connect Option 40 H input wire of adapter Option 40 to the Hi output or the calibrator and L input wire of adapter Option 40 to the Lo output on the calibrator If necessary adjust the zero point of the external multimeter before connecting the cables internal and external multimeters are in parallel Press SELECT display button to select 10 V calibration point Red light is lighting all terminals on calibrator are automatically ON Output xx xxxxxx V is displayed in the bottom part of the display showing the set value of output voltage This value can be changed using the potentiometer or cursor button Adjust the calibrator s output voltage so that the external multimeter shows 10 0000 V After the value stabilizes press WRITE display button to write new calibration value If calibration in this point is not required press SKIP Terminals of multimeter will switch OFF Disconnect both the external and built in multimeter 20 mA DC current range calibration User Manual POWERTEK MC 140 Multifunction Calibrator Leave input terminals of Option 70 adapter OPEN Make short on calibrat
118. nges 20 mVDC 200 mVDC 2 VDC 10VDC 25mADC 200 Ohm 2 kOhm frequency kHz test Distortion checking of AC voltage range 20 V Procedure Following part describes procedure of performance verification test Recommended measuring points are the same as the points in table of limits see tables bellow 1 2 3 Connect the calibrator to the mains and let them switched on for at least one hour in a laboratory at 23 1 C Perform ACAL procedure see chapter Calibration mode Connect voltage input of the standard multimeter to the voltage output terminals of the calibrator Set appropriate parameters on the standard multimeter to achieve its best accuracy Perform 20 VDC linearity DC voltage 20 VAC linearity AC voltage tests according to the tables I II III IV Deviations should not exceed specified limits Connect current input of standard multimeter to the current output terminals of the calibrator Set appropriate parameters on the standard multimeter to meet its best accuracy Perform 200 mADC linearity DC current AC current tests according to the tables V VI VII Deviations should not exceed specified limits Connect current output terminals of the calibrator to the current terminals of resistance shunt 100 mOhm Connect voltage input of standard multimeter to the voltage terminals of the resistance shunt Set range 100 200 mV on standard multimeter Perform AC DC high current test on range 2 A according to the tabl
119. nges from 0 04 C to 0 5 C for resistance sensors and from 0 4 C to 4 3 C for thermocouples Internal multimeter with 20 mA 20 mV 200 mV and 10 V basic ranges and 0 01 accuracy can be used to measure normalized signals coming from transducers external thermocouples or resistance sensors or to measure pressure and force using strain gauge sensors The calibrator includes many other features which facilitate easy use For example relative deviation from set value of the output currently displayed uncertainty of the output signal calibration and testing procedures etc The concept of calibrator control and indication of its status is based on flat luminiscent display which provides all necessary information The calibrator is controlled by opening menus on the display and selection from menus Frequently used functions are assigned direct control keys The calibrator comes with standard GPIB bus and RS 232 serial line which allow the calibrator to be controlled from a PC The calibrator can easily fit within calibration systems featuring MBASE WinQbase software support User Manual v35 MC 140 Multifunction Calibrator POWERTEK ATTENTION The calibrator generates life threatening high voltage The calibrator can only be used in line with this Manual User Manual POWERTEK MC 140 Multifunction Calibrator Preparation for operation Inspecting package contents selecting the installation location Basic packa
120. non zero relative deviation is set Set the desired value of voltage including polarity when necessary frequency and relative deviation The signal is yet not connected to the output terminals The information section of the display shows the symbol OFF which informs about the disconnection of output terminals Press OUTPUT button Red LED is lit above the OUTPUT terminals to signal the connection of the signal to the output terminals the information section of the display shows the symbol mmm Calibrated voltage corresponding to set parameters is present at the output terminals User Manual v35 MC 140 Multifunction Calibrator POWERTEK Control sequence when output voltage over 100 V is selected When output voltage over 100 V is selected the information section of the display shows the symbol g which informs that a life threatening voltage will be present at the output terminals If the output terminals ar currently connected they will be disconnected when output voltage over 100 V is selected OUTPUT button must be pressed to reconnect the output signal to the output terminals After the OUTPUT button is pressed an interrupted beep is sound OUTPUT LED is lit and the information section of the display shows the symbol notifying the user about the connection of the dangerous output signal to the output terminals Voltage polarity frequency absolute and relative deviation can be set without the outputs
121. of set power Set desired value of power using numeric keyboard potentiometer or cursor buttons Output power is not yet connected to the output terminals The information section of the display shows the symbol forr which informs about the disconnection of output terminals Connect the instrument to be calibrated to Hi Lo and I I terminals or short the I I terminals Press OUTPUT button Red LED is lit above the OUTPUT terminals to indicate the connection of simulated electrical power to the output terminals the information section of the display shows the symbol Ld Desired power is connected to output terminals 26 User Manual POWERTEK MC 140 Multifunction Calibrator Display modes The calibrator can display AC power in one of three ways e apparent power in VA active power in W e reactive power in VAr Keep pressing MODE display button to change the function mode Along with mode change the power display depending on set power factor and unit of measurement change as well If DC power is generated it is always displayed in Watts The calibrator can display the phase relation of output voltage and current as power factor 1 to 1 or as phase shift in degrees 0 to 360 SETUP setup menu is used to change the method of displaying the phase relation Power setting modes The calibrator allows several ways of setting the value of generated power 1 Setting the main power value e The
122. on multimeters Basic accuracy of resistance ranges is 0 03 Basic accuracy of capacitance ranges is 0 5 The resistance can be used with AC signals up to 300 Hz to 1 kHz depending on set up value Frequency ranges of the calibrator can generate a squarewave signal with definable and calibrated duty cycle and amplitude in the 1 mV to 10 V range and 0 to 10 kHz frequency range Moreover squarewave signal with very steep rising edge can be generated up to 20 MHz Frequency ranges can be used to calibrate the corresponding frequency ranges of multimeters as well as to calibrate the input sensitivity and time bases of oscilloscopes Powermeter mode can be used to calibrate DC and AC single phase powermeters and energy meters Voltage range is up to 240 V and current range is up to 10 A power factor range is 1 to 1 and the resolution is 1 in the 40 Hz to 400 Hz frequency range The voltage output can supply loads up to 30 mA which allows the calibration of mechanical powermeters Simulation of temperature sensors is yet another feature which can be used to calibrate thermometers and heat sensing units The calibrator allows the simulation of all common Pt and Ni resistance sensors and R S B J T E K N type thermocouples Compensation of cold junction of thermocouple is achieved by entering the respective temperature using the calibrator s keyboard The accuracy of simulated temperature sensors depends on the value and type of sensor and ra
123. on of Hi Lo terminals Disconnect the cable and confirm by pressing NEXT display button the calibrator performs internal measurement of voltage ranges for ca 8 minutes During this period progress information is displayed in the bottom part of the display after the measurement completes the calibrator returns to the calibration mode press EXIT display button to return to normal state e Do not connect any terminals during the calibration procedure with the exception of requested short of Hi Lo terminals User Manual v35 MC 140 Multifunction Calibrator POWERTEK Error messages If an error occurs during the calibrator s operation or control error message is displayed on the display Errors can be caused by e incorrect control using the front panel i e attempts to force a prohibited mode e g setting an out of range value overloading of output terminals etc fault of the calibrator e g internal communication error during the communication between individual functional blocks e incorrect control using the GPIB or RS 232 bus Below you can see a sample error message which appears when too large value is attempted to set up All error messages are displayed in the center of the display OFF Local 05 00000 UV DC F r 46 e too large Accuracy 6 68564 xio sg es ee The following table lists all error messages their meaning and simple troubleshooting User Manual POWERTEK
124. or output terminals I I Press SELECT display button to select the first calibration point 0 mA After the value stabilizes press WRITE display button to write new calibration zero value Disconnect short on I I terminals Connect L input wire of adapter Option 40 to the I output on the calibrator H input wire of adapter to the minus current input on standard multimeter and I output terminal of the calibrator to the positive current input of standard multimeter Calibrator current output input of the internal multimeter and current input of standard multimeter are connected in series If necessary adjust the zero point of the external multimeter before calibrating current range Press SELECT display button to select calibration point 19 mA Red LED is lit above OUTPUT button Note Itcan occur that calibrator beeps and display error message In this case push the button OUTPUT ON to switch calibrator output manually Adjust the calibrator s output current so that the external multimeter shows 19 0000 mA After the value stabilizes press WRITE display button to write new calibration value Terminals of multimeter will switch OFF Disconnect both the external and built in multimeter Disconnect cable adapter Option 40 from the AUXILIARY connector 100 Q resistance range calibration Calibration of both ranges 100 and 1000 consists of following steps e 00 calibration e resistance range of multimeter calibration For c
125. output current User Manual v35 MC 140 Multifunction Calibrator POWERTEK Calibrator s maintenance The multifunction calibrator is electronic instrument with microprocessor control All blocks which are heavily loaded during the operation are cooled by a fan Rules for correct operation Especially the following rules should be adhered to guarantee correct operation of the calibrator The calibrator can only be switched on and off by pressing the mains switch located at the rear panel Do not connect the calibrator to other voltage than set by the voltage selector Do not block the vent openings located at the rear panel and bottom panel The calibrator must not be operated in dusty environment It was designed to be used in a laboratory No liquid or small objects can be permitted to enter the calibrator through the vent openings Do not switch the calibrator outside its operating temperature range Connect the instruments to be calibrated to proper output terminals There is no way of protecting the calibrator from the damage caused by some improper connections Do not damage the output terminals by plugging in bananas thicker than the terminals were designed for Whenever possible use the setup menu to ground Lo output terminal GND U ON setup function Do not overload the power stages by leaving the calibrator switched on with the load connected for a long time especially on 20 A current range and 200V and 1000 V
126. peak value uncertainty displayed values 1 mV to 200 V square positive negative symmetrical ramp A ramp B triangle truncated sin with THD 13 45 0 3 50 uV peak effective Minimum frequency for squarewave signals is 0 1 Hz for all others 20 Hz Current summary range DCI summary range ACI internal ranges resolution frequency resolution frequency range DCI uncertainty 0 0000 uA 200 0000 uA 0 200000 uA 2 000000 mA 2 00000 mA 20 00000 mA 20 0000 mA 200 0000 mA 0 200000 mA 2 000000 A 2 00000 A 20 00000 A ACI uncertainty 1 0000 uA 200 0000 uA 0 200000 uA 2 000000 mA 2 00000 mA 20 00000 mA 20 0000 mA 200 0000 mA 0 200000 mA 2 000000 A 2 00000 A 20 00000 A pak bea 1 0000 uA 200 0000 uA 0 200000 uA 2 000000 mA 2 00000 mA 20 00000 mA 20 0000 mA 200 0000 mA 0 200000 mA 2 000000 A 2 00000 A 20 00000 A OpA 20A with current coil 140 50 to 1000A 1 uA 20 A with current coil 140 50 to 1000 A 200 pA 2 mA 20 mA 200 mA 2 A 20 A 61 2 digit 6 digit minimum step 0 001Hz 20 Hz to 5 kHz bellow 200 mA 20 Hz to 1000 Hz bellow 20 A value range 0 05 0 0 20 nA 0 02 0 005 0 01 0 003 0 01 0 003 0 015 0 005 0 02 0 010 3 value range max voltage Vef 1 kHz 5 kHz 0 30 0 10 20 nA 0 20 0 05 0 20 0 05 0 20 0 05 20 Hz 1 kHz 0 15 0 0 20 nA 0 07 0 01 0 05 0 005 0 05 0
127. picture below DA Error Feedback convertor amplifier amplifier Generator User Manual POWERTEK MC 140 Multifunction Calibrator The calibrator s built in generator generates a sine wave with voltage controlled amplitude The frequency is derived from microprocessor control circuit s crystal oscillator The signal is fed to 20 V or 200 V amplifier and then to output terminals Feedback circuits sense the voltage present at the output terminals normalize its value and detects it This results in a signal corresponding to average value of the output voltage This signal is further filtered and compared to the set value of output voltage The error value controls the amplitude of the generator s output 20mV and 200 mV voltage ranges 20 mV and 200 mV voltage ranges are derived from 2 and 20 V voltage ranges DA convertor 204 amplifier The output of the amplifier is fed to an inverting attentuator with 1 100 nominal division ratio The signal is then led to the output terminals sensed via local feedback This connection allows to load the calibrator output with output current of several mA without losing accuracy 1000 V AC DC voltage range The highest voltage range of the calibrator uses 200 V amplifier It is connected to a pair of transformers with ca 1 6 transformation ratio DA convertor Error amplifier Feedback amplifier Generator 204 amplifier j amplifier In 1000 V AC mode the output of 200 V amplifie
128. ply of sensor to 10V MEAS CONF SGS VOLT 10 lt cr gt If query is sent MC140 returns the supply voltage of SGS using standard exponential format Example 15V is returned as 1 500000e 001 MEAS CONF OFF This command switches the multimeter off TESTer subsystem This subsystem allows to control features of MC140 calibrator when used as tester It starts selected test procedure and reads its result Keyword Parameters TESTer RUN lt DNPD gt User Manual v35 MC 140 Multifunction Calibrator POWERTEK RESUIt TEST RUN lt DNPD gt This command starts selected procedure Number to 10 can be set lt DNPD gt Represents number of procedure Example to run test procedure 3 TEST RUN 3 lt cr gt TEST RESU MC140 returns the result of selected procedure PASS FAIL RUN String RUN is returned if selected procedure isn t finished VD instrument identification IDN This command returns the identification of the manufacturer model serial number and firmware revision The reply is formatted as follows POWERTEK MC 140 412341 4 6 Operation complete OPC lt cr gt This command sets the OPC bit in the ESR Event Status Register when all pending operations are complete Operation complete OPC lt cr gt This command returns 1 to the output queue after all pending operations are complete Operation complete OPC lt cr gt This command
129. pter to the auxiliary connector on the front panel Set in SETUP MENU of build in meter function DC voltage range 2V Connect together Hu and Lu terminals banana of the adapter to make short and use ZERO function of the meter to reset zero point of the meter Connect terminal Hu of the adapter with output terminal Hi on calibrator Connect terminal Lu of the adapter with output terminal Li on the calibrator Set appropriate values of DC voltage on the calibrator according to the table XIII and perform test of meter DC voltage ranges 20mV 200mV and 2V Deviation should not exceed specified limit Note Because accuracy of calibrator output is not accurate enough in all points use external standard multimeter connected in parallel to the output terminals to obtain exact value of DC voltage on the output terminals Disconnect Option 60 from output terminals Hi Li Set resistance function in SETUP MENU of build in meter Make four wire short on the Option 60 banana terminals Use ZERO function of the build in meter to exclude parameters of the adapter Connect standard resistor 100 Ohm to the adapter Use four terminal technique Perform multimeter test on resistance range 200 Ohm according to the table XIII Deviation should not exceed specified limit Use the same procedure to test resistance range 2000 Ohm User Manual POWERTEK MC 140 Multifunction Calibrator 29 Disconnect cable adapter Option 60 and connec
130. query The response message to this query represents the sum of the binary weighted values of the SRE The value of unused bit 6 shall always be zero The Service Request Enable Register is written with the SRE common command followed by an integer value 0 191 Sending the SRE common command followed by a zero clears the SRE A cleared register does not allow status information to generate a rsv local message and thus no service request are issued The Service Request Enable Register is cleared upon power on ESR Event Status Register The Event Status Register is a two byte register in which the higher eight bits are always 0 and the lower eight bits represent various conditions of the MC140 calibrator The ESR is cleared when the power is turned on and every time it is read Bit configuration of Event Status Register PON Power On bit 7 This event bit indicates that an off to on transition has occurred in the device s power supply URQ User Request bit 6 This event bit indicates disconnecting or connecting of any cable adapter to the auxiliary connector on the front panel CME Command Error bit 5 This event bit indicates that an incorrectly formed command or query has been detected by the MC140 EXE Execution Error bit 4 This event bit indicates that the received command cannot be executed owing to the device state or the command parameter being out of bounds DDE Device Dependent Error bit 3 This event bit indicates
131. r s display and the F table to adjust the calibrator s output in the calibration points To adjust the calibrator s output in the calibration points use lt gt v A cursor buttons to adjust the output value Confirm correctly set value by pressing WRITE display button When calibrating the amplitude of the frequency generation function DC voltage corresponding to the amplitude of output squarewave signal is set Built in multimeter calibration Built in multimeter calibration consists of the calibration of 20 mV 200 mV 2V and 10 V voltage ranges one 20 mA current range and 200 Q and 2 kQ resistance ranges Cable adapters Option 40 two wire adapter and Option 60 four wire adapter are necessary to connect the multimeter Due to the fact that the precision of the built in multimeter is comparable to the precision of the calibrator in resistance small voltage and current ranges external calibrator of higher precision class should be used to calibrate the built in multimeter If external calibrator is not available the calibrator can be used to calibrate the built in multimeter but it has to be taken into account the fact that the precision of the calibration can be insufficient An 81 2 digit multimeter is recommended for calibration a 10 V DC voltage range calibration Connect adapter Option 40 to the AUXILIARY connector on the front panel Select ANALOG INPUT from the calibration menu Press SELECT display butto
132. r and the instrument to be calibrated in the P E mode When calibrating the power and energy meters with separate voltage and current circuits it is advisable to select GND U ON and GND I ON both grounding methods on on the MC 140 calibrator This setting will ground both the current and voltage output of the calibrator If the instrument to be calibrated has electrically connected and not grounded current and voltage inputs GND U ON and GND I OFF should be selected on the MC 140 calibrator If Lo and I terminals on the calibrator are connected AND the same terminals are connected at the instrument to be calibrated resulting voltage drop at the current cables can damage the relay which interconnects Lo and I terminals with GND terminal in the calibrator Operating examples chapter provides more information concerning correct connection of powermeters and energy meters to the calibrator 30 User Manual POWERTEK MC 140 Multifunction Calibrator Uncertainty calculation of set power Uncertainty of set power displayed on the Accuracy line of the display is calculated according to the following formula for active power dP V dU d dPF 0 037 for reactive power dP V dU dP dPF 0 037 for apparent power dP V dU dI 0 03 where dP is the uncertainty of set power dU is the uncertainty of set voltage dI is the uncertainty of set current dPF is the uncertainty of set PF cosp
133. r is transformed and led to the output terminals The output voltage is sensed rectified and compared to reference DC voltage provided by the DA converter error value controls the amplitude of the generator s output so that there is correct voltage at the output terminals In 1000 V DC mode 12 kHz signal is transformed rectified filtered and led to the output terminals The output voltage is sensed equally to 1000 V AC mode User Manual v35 MC 140 Multifunction Calibrator POWERTEK Current converter The current converter and current amplifier form a separate design block based on a transconductivity converter with 10 S nominal conversion ratio R _ IE eme U1 power stage R4 R3 4 cS N I z l Its input is fitted with overload protection and a separate circuit which measures the shift between output voltage and current in 2 and 20 A current ranges The output stage is push pull in B class Resistance and capacitance simulator Resistance and capacitance are simulated using electronic simulator DA convertor power stage The Hi and Lo terminals are calibrator s output terminals The stage including U1 operating amplifier converts voltage to current U2 is a separation amplifier R1 to R5 and C1 to C3 are range impedance DA converter has 0 to 1 and 0 to 1 conversion ration and allows the simulation of resistance and capacitance values di
134. ration point When the standard output value is reached press WRITE to write new calibration value to the calibration memory If you press SKIP button the calibrator User Manual v35 MC 140 Multifunction Calibrator POWERTEK ignores the new value and old value is retained After you press WRITE or SKIP the calibrator moves on to the next calibration point The procedure is repeated for all calibration points of the selected function If you press EXIT button before completing the calibration the calibrator returns to the calibration menu Termination of calibration The calibration can be terminated in the following cases e complete calibration has been performed new calibration data have been entered the program has returned to the calibration menu calibration of selected function has been performed new calibration data have been entered the program has returned to the calibration menu calibration of selected range s of selected function has been performed new calibration data have been entered the program has returned to the calibration menu the calibration has been started but no calibration data have been entered the program has returned to the calibration menu after EXIT display button has been pressed Press EXIT display button to terminate the calibration After the button is pressed the calibration date is saved internally and the calibrator returns to the state i
135. rk can be used A flag indicating a request for the parameter specified by the command This command permits a value to be set as well as requested carriage return ASCII code 13 This code executes the program line line feed ASCII code 10 This code executes the program line OUTPut subsystem This subsystem allows to control the output terminals of MC140 calibrator to activate the four wire output or to switch the calibrator to x50 current coil option 130 50 140 50 Keyword Parameters OUTPut STATe lt CPD gt ON OFF 0 1 ISELection lt CPD gt HIGHi HI5Oturn OUTP STAT lt CPD gt ON OFF 0 1 This command activates or deactivates the output of MC140 calibrator e ON or activates the output User Manual v35 MC 140 Multifunction Calibrator POWERTEK e OFF or 0 deactivates the output If query is sent MC140 returns ON if the output is active or OFF if it is inactive Example OUTP 1 lt cr gt activates the output OUTP lt cr gt the calibrator returns ON or OFF OUTP ISEL lt CPD gt HIGH HI50 This command activates or deactivates the 1000A current range using a 50 turn coil HIGH deactivates the 50 turn coil e HI50 activates the 50 turn coil up to 1000A range If query is sent MC140 returns HIGH if the 50 turn coil is deactivated or HI50 if it is activated Example OUTP ISEL HI50 lt cr gt activates the 50 turn coil OUTP ISEL
136. rminals after pressing the OUTPUT button given the existing setting of voltage current freguency and power factor Time setting range is 1 1 s to 1999 s 16 18 2668 12 46 1 150000 kU PF 1 688 58 868 Hz U 230 0008 U 05 00000 A 68 85 069 BB88kWs Ci Ci 17 Setup User Manual v35 MC 140 Multifunction Calibrator POWERTEK The energy value can be set in two ways Direct setting of energy e Select the energy mode and then keep pressing the center cursor button until symbols appear under the time value E xxx xxxx supplemented with indication of the set mode The value can be set using numeric keyboard cursor buttons or potentiometer and confirmed by pressing Ws kWs MWs VAs kVAS MVAs or VArs kVArs MVArs display buttons depending on the set mode The value can also be confirmed by pressing ENTER Time value is recalculated using new set energy Setting the time e Select the energy mode and then keep pressing the center cursor button until symbols appear under the time value t xxx x s 16 18 2688 12 41 1 150000 kU PF 1 688 50 000 Hz 230 0000 U 05 0000 A 863 8888klls C C 17 Exit e The value can be set using numeric keyboard cursor buttons or potentiometer and confirmed by pressing s display button depending on the set mode The value can also be confirmed by pressing ENTER e Energy value is recalculated using new set time Grounding of the calibrato
137. s voltage selector mains switch IEEE 488 connectors for connection to GPIB bus and type plate with serial number air inlet forced ventilation air outlet forced ventilation GPIB RS 232 connectors power cord socket with fuse mains voltage selector mains switch type plate User Manual v35 MC 140 Multifunction Calibrator POWERTEK Control of the calibrator Selection of function After the power is switched on and the initial checks complete the calibrator resets to its reference status i e DC voltage output with set value of 10 V and output terminals disconnected Internal multimeter is switched off The status of the calibrator can be changed using the buttons located at the front panel in one of the following ways 1 Change of function by pressing one of direct function buttons After pressing one of the U I DC AC R C P E F T METER buttons the calibrator switches to the desired function mode and resets to the reference or to the most recently used parameter setting 2 Connection disconnection of output terminals After pressing the OUTPUT button the output terminals of the calibrator are connected disconnected 3 Connection disconnection of multimeter After pressing the INPUT button the multimeter starts measuring the value present at the input terminals depending on the function mode of the multimeter The measurement is only possible when any of Opt 140 xx adapters is connected to the
138. sconnects the output terminals and displays an error message When ammeters are being calibrated using currents over A it is important to connect the terminals properly paying attention both to the calibrator s output terminals and the instrument s input terminals Excessive contact resistance can heat up the terminals and cause calibration errors Excessive and unstable contact resistance has non linear characteristic and can distort the output AC current It is not recommended to connect non standard load to the current output The calibrator is designed to be used for calibration of ammeters Output terminals should be loaded with low and real impedance Although the output is fitted with fast electronic and microprocessor protection high capacitance or inductance can lead to oscillations of output amplifiers and result in damage The instrument to be calibrated can be connected either directly to the front panel terminals or to Opt 140 01 cable adapter If L terminal of the instrument to be calibrated is not grounded then calibrator s U I terminal should be grounded GND U ON GND I ON see Setup menu chapter User Manual v35 MC 140 Multifunction Calibrator POWERTEK Connection of a multimeter to be calibrated current range to calibrator s output terminals Optional current coil can extend the calibrator s current range to 1000 A The coil can be used for calibration of both DC and AC ammeters The clamps
139. source terminal of RCL meter to the Lo output terminal of the calibrator Perform capacitance test according to the table XI Deviations should not exceed specified limits Connect output voltage terminals of the calibrator to the counter Set output voltage 1 VAC frequency 1 kHz Perform frequency test according to the table XII Deviation should not exceed specified limit Connect Option 40 cable adapter to the auxiliary connector on the front panel Connect Lo banana of the adapter to the Lo output terminal on the calibrator Connect Hi banana of the adapter to the Hi output terminal on the calibrator Set appropriate value of frequency and DC voltage range 20V on the calibrator frequency and 10 V DC range on build in meter according to the table XIII Perform multimeter test in points FREQUENCY 1000Hz and 10 VDCV Deviations should not exceed limits in the tables bellow Note Because accuracy of calibrator output is not accurate enough in all points use external standard counter freguency or multimeter DC voltage connected in parallel to the output terminals to obtain exact value on the output Connect Option 40 cable adapter to the I I output terminals of the calibrator Set appropriate value of output DC current Perform multimeter test on range 25 mA DC i e point 19 mA DC see table of limits according to the table XIII Deviation should not exceed specified limit Connect Option 60 cable ada
140. splay button or by pressing ENTER Setting the signal shape Signal shape can only be set in PWM mode e Keep pressing SHAPE display button to select desired signal shape NEG negative SYM symmetrical POS positive e Output signal of desired shape is connected to the output connector Simulation of temperature sensors The multifunction calibrator can simulate resistance temperature sensors and thermocouples When resistance temperature sensors are simulated a simulated resistance corresponding to set temperature sensor type and temperature scale is connected to Hi Lo terminals When thermocouples are simulated a simulated voltage corresponding to set temperature sensor type and temperature of cold end of thermocouple is connected to Hi Lo terminals Simulated values of temperature sensors are also available at the AUXILIARY connector Thermocouple voltage is available at U U terminals Four wire connection of resistance temperature sensors is provided by current terminals PTLI PTHI and voltage terminals PTLU PTHU 140 41 cable adapter is recommended Temperature setting range 250 to 1820 C depending on simulated sensor type Sensor types resistance temperature sensor Pt 1 385 Pt 1 392 Ni thermocouple K N R S B J T E Temperature scale ITS 90 PTS 68 for resistance temperature sensors and thermocouples Switching between resistance temperature sensors and thermocouples e Press T button on the calibrator
141. t C K SOUR TEMP SCAL lt CPD gt TS68 TS90 This command sets one of temperature scales The setting influences the simulation of resistance temperature sensors and thermocouples e TS68 sets IPTS 68 temperature scale e TS90 sets ITS 90 temperature scale The temperature scale remains valid after the calibrator is switched off If query is sent MC140 returns the set temperature scale TS68 TS90 User Manual v35 MC 140 Multifunction Calibrator POWERTEK SOUR TEMP THER LEVE IMM AMPL lt DNPD gt This command activates the simulation of thermocouples DC voltage generation lt DNPD gt Represents the temperature expressed in the units set by the UNIT command Technical Data chapter lists the acceptable ranges If query is sent MC140 returns the set temperature using standard exponential format Example 20 5 C is returned as 2 050000e 001 SOUR TEMP THER RJUN lt DNPD gt This command sets the temperature of cold end of thermocouple lt DNPD gt Represents the temperature expressed in the units set by the UNIT command Technical Data chapter lists the acceptable ranges Example to set the temperature of cold end of thermocouple to 25 C TEMP THER RJUN 25 lt cr gt If query is sent MC140 returns the set temperature using standard exponential format Example 20 5 C is returned as 2 050000e 001 SOUR TEMP THER TYPE
142. t DNPD gt lt DNPD gt lt DNPD gt lt DNPD gt lt CPD gt C CEL K lt CPD gt TS68 TS90 lt DNPD gt lt DNPD gt lt CPD gt B E J K N R S T lt DNPD gt lt CPD gt PT385 PT392 NI lt DNPD gt SOUR FUNC SHAP lt CPD gt DC SIN PULP PULS PULN RMPA RMPB TRI LIMS PWMP PWMS PWMN SOU This command sets the shape of the output signal At the same time the respective function must be set E g for VOLT or CURR function FUNC DC FUNC SIN or other signal shape must be set Some functions RES CAP do not require any other settings e DC sets a DC output signal for voltage current or power modes SINusoid sets AC output signal for voltage current or power modes e PULPositive sets AC sguarewave signal for voltage or current modes The amplitude and duty cycle can be set The rectangles are positive i e switching between 0 and amplitude PULSymmetrical sets AC squarewave signal for voltage or current modes The amplitude and duty cycle can be set The rectangles are symmetrical i e switching between amplitude and amplitude PULNegative sets AC squarewave signal for voltage or current modes The amplitude and duty cycle can be set The rectangles are negative i e switching between amplitude and 0 RMPA sets AC output signal ramp shape for voltage or current modes The amplitude can be set The output switches between amplitude a amplitude RMPB sets AC
143. t distortion meter to the voltage output terminals of the calibrator Set output voltage 10 VAC frequency 1000 Hz and sin waveform 30 Check harmonic distortion of output signal It should not exceed 0 05 If calibrator is out of limits is in some points of this test appropriate function and range should be recalibrated It is not necessary to recalibrate all functions but only this one which does not meet specification See chapter Calibration mode where recalibration procedure is described User Manual v35 MC 140 Multifunction Calibrator POWERTEK Tables of limits 20 V DC Basic range with linearity test Function Range Frequency Hz Deviation allowed value 0 008 006 005 004 004 004 004 004 004 004 008 006 005 004 004 004 004 004 004 004 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 OC O O O OC CO OO O O OC CO OJ OQ OC EO OC CO OC OC Oo OC O O O O O O O O OC CO OJ OQ O O OC CO CO CO O lt lt lt lt lt SPS SIS lt a SIS SIS I lt I I lt lt a lt lt o o o o o jo ojo o o o o o o jo ojo o o DC voltage test Function Frequency Hz Deviation allowed value 0 004 004 004 003 004 003 010 010 o o jo oj o o ga a S b o Ole o
144. t it can be used to reduce the time and temperature dependent drift of zero point when calibrating using small DC voltages and when simulating the thermocouples Calibration principles The calibrator can be calibrated e completely i e all functions are calibrated in all recommended points e partially i e only selected functions are calibrated in all recommended points e partially i e only selected functions are calibrated in selected points Complete calibration consists of all partial calibrations performed in the order defined by the calibration menu If an item of the calibration menu e g VOLTAGE DC is selected it is not necessary to calibrate all ranges defined by the calibration algorithm If new calibration of all ranges is not possible e g the required standard is not available old calibration data can be confirmed i e current step of the calibration can be skipped Calibration interruption can be performed in any point of the calibration procedure However this particular calibration influences parameters of the calibrator Accuracy of the calibrator is guaranteed when full calibration was done DC voltage calibration is performed by setting the zero and slope of the scale in all ranges and in both signal polarities and except the 1000 V range where zero correction is not necessary AC voltage calibration is performed by setting the zero and slope of the scale in all ranges at 1000 Hz except the 1000 V range
145. t was in before the calibration has been started Calibration points Each function of the calibrator has assigned fixed calibration points which have to be set during the calibration For VOLTAGE DC VOLTAGE AC CURRENT DC CURRENT AC POWER AC POWER DC F functions the signal value is set using the keyboard For R C functions and partially also during the calibration of the multimeter calibration data of the range resistances must be entered T function does not require any calibration as the output voltage or resistance is based on arithmetic interpolation using standard tables of temperature sensor values The calibrator needs no calibration of the following parameters e frequency phase relationship power factor of output voltage and frequency in AC power energy generation mode DC and AC power except DC and AC current in this mode User Manual POWERTEK MC 140 Multifunction Calibrator VOLTAGE DC function nominal value V set limits V range V zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration zero calibration zero calibration slope calibration slope calibration slope calibration slope calibration Table DC VOLTAGE VOLTAGE AC function Table AC VOLTAGE Other then r
146. ter connects I to GND In practice this means that I terminal is grounded By pressing the display buttons the terminal can be grounded or ungrounded OFF is set by the manufacturer output terminals are not grounded It is recommended to ground only the voltage channel GND U ON GND I OFF for all ranges except the generation of power or energy If the meter to be calibrated has Lo terminal grounded it is recommended to unground both outputs of the calibrator GND U OFF GND I OFF to exclude ground loops Note If neither the calibrator s output nor the meter s inputs are grounded signal noise ratio can arise at the calibrator s output User Manual POWERTEK MC 140 Multifunction Calibrator 4 Temp scale xx ITS90 PTS68 This parameter allows the temperature scale for platinum resistance temperature sensors to be selected Pressing the display buttons allows to switch between ITS90 and PTS68 temperature scales ITS90 is set by the manufacturer 5 Temp unit xx CK This parameter allows the temperature unit for simulation of temperature sensors to be selected Pressing the display buttons allows to switch between C and K C is set by the manufacturer 6 Phase unit xx cos This parameter allows the unit of phase shift between the voltage and current output to be selected in the power energy generation mode Pressing the display buttons allows to switch between and COS degrees and power factor
147. terminals can carry high current and are the only terminals to which the calibrated object can be connected Depending on the setting of the calibrator current up to 20 Agr can be driven by the terminals DC current range is 0 to 20 A AC current range is luA to 20 A When 50 turn coil option 140 50 is used AC current range is 50uA to 1000 A Output current up to 20 mA is available at AUXILIARY connector and it is accessible via cable adapter Opt 41 41 only Control in the current mode e Press T button on the calibrator and then select AC or DC mode by pressing DC AC button The display shows the following data main data of set current relative deviation uncertainty of output current frequency when AC current is generated total value of output current when non zero absolute or relative deviation is set time after which the output terminals will be disconnected when the output current over 10 A is selected Set the desired value of voltage including polarity when necessary frequency and relative deviation The signal is yet not connected to the output terminals The information section of the display shows the symbol which informs about the disconnection of output terminals OFF Connect the load or short the output terminals labeled I Press OUTPUT button Red LED is lit above the OUTPUT terminals to signal the connection of the signal to the output terminals the information section of the disp
148. the same as when 140 41 cable adapter is used Use of Option 70 Adapter is aimed for four wire generation of resistance values and for four wire resistance temperature sensor simulation Re calibration of resistance function of the calibrator can be performed only with this adapter Resistance ranges are the same as two wire resistance ranges with output on Hi Lo terminals on front panel When adapter Option 60 is used resistance output is only on output terminals on this adapter Front panel Hi Lo terminals are switched off When adapter Option 60 is used set resistance value is connected to the adapter output terminals permanently Status of button ON OFF doesn t influence resistance connecting or disconnecting Examples of tests Examples of applications Pt 100 10 V 20 mA f Calibration of temperature evaluation units setting of pe 0 ai TC 10 V 20 mA f Calibration of temperature evaluation units setting of eo eee a 10 V 20 mA Setting calibration of energy meters 10 V 20 mA Measurement of resistance bridges 1 Calibration of industrial thermometers with Pt100 sensor and 20 mA 10 V output 118 User Manual POWERTEK MC 140 Multifunction Calibrator INPUT OUTPUT re HU L Function setup Calibrator T RTD function OUTPUT 140 41 ON Multimeter DCV or DCI depending on the output signal type of the unit being tested Adapter Opt 140 41 Powertek Function setup Calibrator T TC function OUTPUT 140 41 ON
149. tion A if a non zero relative deviation is set Displayed information When non harmonic output shape is selected the display shows additional information e besides the main amplitude data pk index is displayed notifying that the displayed main value is the peak value Symbol which displays the shape of the output signal is displayed too User Manual POWERTEK MC 140 Multifunction Calibrator e below the main data an information about the shape type Shape xxxxx is displayed e below the main data calculated effective value of the output signal is displayed e for squarewave signals set value of duty cycle PWM xx is displayed r OFf Simulation of resistance and capacitance The multifunction calibrator can simulate an exact value of resistance or capacitance The outputs of the simulator are connected to Hi Lo terminals and to AUXILIARY connector pins 20 21 22 23 4W resistance is accessible only via cable adapter Opt 70 Only two wire connection is available on the front panel terminals Hi Lo Both two wire and four wire connection is possible only through AUXILIARY connector The terminals SIMHI SIMLI are current terminals and SIMHU SIMLU are voltage sensing terminals Cable adapter Option 70 or cable adapter Option 140 41 must be used for four wire connection Type of cable adapter currently connected to the AUXILIARY connector is displayed on the display If Option 70 is connect
150. tput terminals on GPIB communication error Bad command of GPIB GPIB communication error Wrong data format on GPIB Not known command on GPIB Listener not connected to the GPIB Check correct connection of GPIB cable Overcrossing the range via Value out of range was set via GPIB Set correct value GPIB Bad calibration code Wrong calibration code was entered calibration cannot start Enter correct calibration code Attempt to start calibration Attempt to start calibration before 60 minutes warm up period before warm up Let the calibrator turned on for at least 60 minutes Adapter isn t allowed for autocalibration Use another cable adapter or perform autocalibration procedure without cable adapter Attempt to start calibration Calibration of resistance ranges can be performed with adapter without cable adapter Option 70 Calibration of internal multimeter can be performed with cable adapters Option 40 and Option 60 Internal error of the calibrator Turn the calibrator off and after 5 s turn on If the error will appear again contact manufacturer Internal error Internal error of the calibrator Turn the calibrator off and after 5 s turn on If the error will appear again contact manufacturer Internal error Internal error of the calibrator Turn the calibrator off and after 5 s turn on If the error will appear again contact manufacturer Internal error Maximum value is out of Attempt to set
151. ts of the test press EXIT display button to return to the previous level The test can be interrupted by pressing CANCEL button Programming the test Test procedures can be programmed after you select a procedure in the basic Tester menu and press SELECT display button The calibrator displays a programming table SETUP TESTER Program number 1 Steps 18 BTEP OUTPUT W LOW U HIGH U TIME 16 666668 1 99000 2 01000 2 0 20 H4B AA 1 98000 2 82688 2 4 38 8666668 2 97000 3 03000 2 0 40 466668 3 96000 4 04000 2 8 54 668668 4 95888 5 85888 2 4 Output Input Steps Exit Two basic test parameters can be set e definition of the type of input and output signals and the number of steps e numeric values for each step User Manual v35 MC 140 Multifunction Calibrator POWERTEK Setting the type of signals and the number of steps Type of output signal can be set using OUTPUT display button Press the button repeatedly to select the signal which will be generated at the output terminals after the test program is executed The following options are available VDC VAC ADC AAC WDC WAC R C TRTD TTC FPWM F HF Selected type of output signal is displayed in the header of the programming table Output column The values in the table change when the type of the output signal is changed Type of measured signal input can be set using INPUT display button Press the button repeatedly to select the signal
152. ue in the MC140 Calibrator Pona ee ee ose ove OF ESR Event Status Register Y Read using ESR Output Queue Read using E SE Vite using ESR ESE Event Status Enable Register T Read bySerialPoll Service Request o STB Status Byte Register Generation T Read using STB h Read using SRE 4 White using SRE 7 6 5 4 3 2 1 0 SRE Service Request Enable Register Status Register Overview Status data structure of MC140 Calibrator contains following registers STB Status Byte Register SRE Service Request Enable Register ESR Event Status Register ESE Event Status Enable Register Output Queue STB Status Byte Register The summary messages from the Event Status Register and Output Queue are used to set or clear the appropriate bits B4 and B5 of the Status Byte Register These bits do not latch and their states 0 or 1 are solely dependent on the summary messages 0 or 1 For example if the Standard Event Register is read its register will clear As a result its summary message will reset to 0 which in turn will clear the ESB bit in the Status Byte Register Bit configuration of Status Byte Register User Manual v35 MC 140 Multifunction Calibrator POWERTEK RQS Request Service bit 6 The RQS bit is set to 1 whenever bits ESB or MAV change from 0 to 1 and are enabled 1 in the SRE When RQS is 1 the
153. unction Type RTD Unit If you want to reset the unit of measurement to original setting press CLR display button Original settings are listed below basic DC voltage range VDC DC current mA DC 20 mA small DC voltages mV DC up to 100 mV four wire resistance measurement frequency up to 15 kHz temperature measurement using thermocouples temperature measurement using resistive temperature sensors measurement of strain gauge sensors User Manual POWERTEK MC 140 Multifunction Calibrator Use of calculation formula Each function of the multimeter can display recalculated measured value The value shown on the display is always calculated according to the formula Y A0 A1 X A2 X where X is the value measured by the multimeter Y is the value shown on the display Default setting of the coefficients is AO 0 Al 1 A2 0 This means that directly measured value is displayed on the display If any other recalculation is required enter the desired parameters Parameter AO must be of the same dimension as is in row UNIT Press METER direct control button and select AO A1 A2 option from the menu using cursor buttons Enter new value using numeric keyboard Confirm the value by pressing ENTER After setting the coefficients use A or v cursor buttons to switch to the previous or next menu option The same can be achieved using the potentiometer after pressing the knob Press EXIT display button the close t
154. unction Calibrator POWERTEK General data Warm up time Operating temperatures Temperature coefficient Reference temperature Storage temperatures Dimension Netto weight Power line Power consumption Safety class 60 minutes 23410 C humidity lt 75 Temperature coefficient for temperature outside of Tcal 4 C between 13 C to 33 C is 0 1 x C 2342 C 10 C to 55 C 450 x 480 x 150 mm 23 kg 115 220 230 V 50 60 Hz 45 VA without load Max 150 VA with full load I according EN 1010 1 Used external fuses F4L250V Used internal fuses F1 6L250V F200mL250V F2 5L250V Accessories Basic accessories included in delivery Power line cord User s manual Test report Spare fuse Test cable 1000V 20A Im Option 40 Cable adapter Canon 25 2 x BANANA 1 m Option 60 Cable adapter Canon 25 4x BANANA 1 m Option 70 Adapter for four terminal resistance generation Cable RS RS 232 cable 1 pc Options extra ordered e 140 50 Current coil 50 turn e 140 01 Cable adapter for calibration of multimeters e 140 02 Set of cables e 140 41 Cable adapter for simultaneous calibration measuring e Option 10 Output cable 20A 1000V black e Option 11 Output cable 20A 1000V red e Option 20 Output cable BNC BNC e Option 30 Output cable BNC BANANA e Option 40 Output cable D SUB25 2xBANANA 1 m Option 60 Output cable D SUB25 4xBANANA 1 m Cable GPIB IEEE488 IEEE488 2m Cable RS Cable R
155. urns the set value of nominal resistance using standard exponential format Example 20 5Q is returned as 2 050000e 001 MEASure subsystem This subsystem allows to control the internal multimeter of MC140 calibrator It sets the multimeter s functions and reads measured values Keyword Parameters MEASure 4 CONFigure VOLTage CURRent MVOLTage RESistance FREQuency TEMPerature RTD TYPE lt CPD gt PT385 PT392 NRESistance lt DNPD gt THERmocouple TYPE lt CPD gt B E J K N R S T RJUNction lt DNPD gt SGS VOLTage lt DNPD gt OFF MEAS This command returns the measured value Example 20 5 is returned as 2 050000e 001 MEAS CONF MC140 returns the set measurement mode VOLT CURR MVOLT RES FREQ TEMPerature RTD TEMPerature THERmocouple SGS OFF MEAS CONF VOLT This command selects the function VOLT range 0 12V of internal multimeter and switches it on User Manual v35 MC 140 Multifunction Calibrator POWERTEK Example to set the multimeter to DC voltage 10V measurement mode MEAS CONF VOLT lt cr gt MEAS CONF CURR This command selects the function CURR range 0 25mA of internal multimeter and switches it on Example to set the multimeter to DC current 20mA measurement mode MEAS CONF CURR lt cr gt MEAS CONF MVOLT This command selects the function MVOLT range 0 2000mV of internal multi
156. values can be measured The multimeter can only be connected through AUXILIARY connector Description of controls chapter lists the pins of the connector The manufacturer recommends 140 41 cable adapter or Option 40 cable terminal to connect the multimeter 140 41 cable adapter includes a fuse which protects the multimeter from current overload The manufacturer does not recommend connection of multimeter inputs to calibrator outputs Such connection can result in presence of high voltage at multimeter inputs which can damage the multimeter Basic menu Multimeter setting menu can be opened by pressing the METER direct control button After the button is pressed SETUP METER menu opens which allows to set up the multimeter Press EXIT display button to return to previous menu Press A or v cursor button to browse the menu options Active option is always inverted The parameters of the active option can be changed if the respective function is allowed to be changed Use UP DOWN CLR NEXT and display buttons to change the parameters of the active option Multimeter parameters can also be set using the potentiometer The potentiometer can be used either to browse the menu options or to change the value of the active option Press the knob to switch between these modes Keep pressing EXIT display button to return to normal display when you are finished setting up the parameters User Manual POWERTEK MC 140 Multifunction
157. y shows the following data set frequency relative deviation of frequency signal amplitude PWM mode or attenuation HF mode duty cycle PWM mode only User Manual v35 MC 140 Multifunction Calibrator POWERTEK signal shape PWM NEG POS SYM PWM mode only Set the frequency using numeric keyboard cursor buttons or potentiometer Output signal is not yet connected to the output terminals The information section of the display shows the symbol OFF which informs about the disconnection of output terminals Connect the object to be calibrated to FREQ terminal Press OUTPUT button Red LED is lit above the OUTPUT terminals to indicate the connection of signal to the output connector 16 18 2688 12 41 1 000000 kHz Ad BA BABB U 16 668 V PUM 58 Shape PWM POS Accuracy 4 6858 x 18 18 Shape Setup e Output signal with set frequency is present at the output connector FREQ connector must not be overloaded In 100 mV to 10V voltage range maximum load is 5 mA In other voltage ranges maximum load is 0 1mA If the output is overloaded the set value is not guaranteed The output is short circuit proof The outer casing of the connector is electrically connected to the chassis of the calibrator Setting relative deviation Keep pressing the center cursor button until symbols appear under the relative deviation value A xx xxxx e The value can be s
158. ypes K N R S B J T E temperature measurement using RTD sensors types Pt 1 385 Pt 1 392 setting of sensitivity of strain gauge sensors pressure force SGS User Manual v35 MC 140 Multifunction Calibrator POWERTEK e After setting the range use A or v cursor buttons to switch to the previous or next menu option The same can be achieved using the potentiometer after pressing the knob Press EXIT display button the close the range selection menu and to return to the basic display Units of measurement Unit of measurement can be set for each measurement function The unit of measurement is displayed along with the measured value on the display The description of the unit of measurement can consist of up to 4 characters e Press METER direct control button and select UNIT option from the menu using cursor buttons Press the knob of the potentiometer to display A and v symbols above the active character Press UP DOWN display buttons or use the potentiometer to select desired character at the active position Press NEXT display button to move onto next character Press the knob of the potentiometer to complete the setting After the unit of measurement is selected use A or v cursor buttons to move onto the next menu option The same can be achieved using the potentiometer after pressing the knob Press EXIT display button the close the range selection menu and to return to the basic display 8 6 2000 12 48 SETUP METER F

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