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FLUKE 5700A/5720A series user manual

1. TIME gt 5700A 5720A SERIES Il CALIBRATION CALIBRATION CYCLE Figure 1 1 Time and Costs Calibrator Calibration 5700A 5720A Series II Operators Manual 1 16 The Calibration Process Calibration requires only three external standards 10 V 1 Q and 10 KQ Environmentally controlled internal check standards provide the primary reference points A stored table of calibration constants defines additional reference points for controlling the output Traceable calibration and adjustment to the specified level of performance is accomplished in a semi automated process that revises this table When you finish calibration but before you save the new constants the calibrator presents you with the proposed adjustments as ppm of range and percentage change in specification for each range and function You can print a list of changes through the serial RS 232C port or send them to a computer through either the serial port or the IEEE 488 port Also on completion of calibration the calibrator displays the largest proposed change Calibration can be completed as far as deriving and printing the proposed adjustments without changing the setting of the rear panel CALIBRATION switch however the switch must be set to ENABLE to store the changes in nonvolatile memory and make them effective The switch is recessed to allow the metrologist to cover it with a calibration sticker to gu
2. 140 dB DC to 400 Hz Frequency Ranges HZz i ete emen 10 000 119 99 0 1200 k 1 1999 k 1 200 k 11 999 k 12 00 k 119 99 k 120 0 k 1 1999 M Uncertainty 0 01 96 Resolution retra nee ac den 11 999 counts Phase Lock Selectable Rear Panel BNC Input Phase Uncertainty except 1100 V range 230 Hz 1 0 05 KHz 30 Hz 3 Input Voltage ect recte ta ted 1 V to 10 V rms sine wave do not exceed 1 V for mV ranges Frequency Range 10 Hz to 1 1999 MHz Lock Raher us curanu tee oreet dean 2 96 of frequency LOCkIN Time erae e a Larger of 10 frequency or 10 msec Phase Reference Selectable Rear Panel BNC Output RIJE E 180 Phase Uncertainty except 1100 V range 1 at quadrature points 0 90 180 elsewhere 2 Stability sane toda be 0 1 Resolution x19 Output Level ii 2 5 V rms 0 2 V Frequency Range 50 kHz to 1 kHz usable 10 Hz to 1 1999 MHz I 57004 5720A C 1 1 5725A Beal 2 2 x 10 V Hz 1000 o o S 100 E s 10 5700A 03 T OMNE ESSO PR A P oda e 0 L 10Hz 50Hz 1 kHz 100kHz 1MHz 30 MHz Frequency Figure A 1 28 Introduction and Specifications 1 Electrical Specifications 1 31 Resistance Specifications 5720A Series Il Resistance Specifications Absolute Unc
3. Meter Response vs Stimulus oeii store Cable Connections for Testing a Fluke 70 Series Multimeter Cable Connections for Calibrating a Fluke 70 Series Multimeter 8840A Calibration Connections i IEEE 488 Connector Pin Assignments nono nono nconcnon cnn nono nnconnnns R S 232C Connector Pino Uta Accessing the FUSE ccoo ccoo nono noc tssis corn enne enn enne Accessing the Arr Ple corticoides rro rre trenes ea ue vsu eee eaae eoe desse ela ro 732B External Calibration Connections essen 220V DC Range Calibration Connections Wideband Module Calibration Connection i 5700A 5720A Series Il Operators Manual Ra ld ld ld Ta LL pl lo pd pl pl p do pl lo pd pl pd p do pd do Al pah NNNNNNNNNNH EERE SE eB 0 0 00 1 0 0A dS 0 09 S9 Oo CLIQUE NO dI ID ax Ua o e Chapter 1 Introduction and Specifications Wideband AC Voltage Module Option STODA 03 Auxiliary Amplifier i SSA AMPIO aa tale ANS Support Equipment and Services 732B Direct Voltage Reference Standard sss 732B 200 Direct Volt Maintenance Program U S A Only 742A Series Resistance Standards sss Wideband AC Module Option 5700A 03 Calibration Support Service Centers cci ai The Compon
4. 40 PRINT 04 SRE AS 60 GOSUB 90 GET AND PRINT NEW SRE 80 END 90 PRINT 04 SRE ASK FOR THE SRE CONTENTS 199 INPUT 04 A RETRIEVE THE REGISTER CONTENTS 119 PRINT SRE A 12 RETURN Remote Operation 5 Checking the Calibrator s Status 5 28 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 except bits 6 and 1 represent various conditions of the calibrator The ESR is cleared set to 0 when the power is turned on and every time it is read A mask register called the Event Status Enable register ESE allows the controller to enable or mask disable each bit in the ESR When a bit in the ESE is 1 the corresponding bit in the ESR is enabled When any enabled bit in the ESR is 1 the ESB bit in the Serial Poll Status Byte also goes to 1 The ESR bit stays 1 until the controller reads the ESR or does a device clear a selected device clear or sends the reset or CLS command to the calibrator The ESE is cleared set to 0 when the power is turned on 5 29 Bit Assignments for the ESR and ESE PON Power on This bit is set to 1 if the power supply has been turned off and on since the last time the ESR was read CME Command error fault The calibrators IEEE 488 interface encountered an incorrectly formed command The command FAULT fetches the earliest fault code in the fault queue which c
5. eee Symbolic Names of Calibration Constants eeen SIhrrri d M a D 1 5700A 5720A Series Il Operators Manual vi List of Tables Table Title 1 1 Auxiliary Amplifier Data sess 2 l Standard Equipment eite tetti ob Fn d RET ICA NER d Ine rb a RIS RE reading 2 2 Line Power Cord Types Available from Fluke esee 3 l Front Panel Features narrar ana 3 2 Rear Panel Features cen reple ee te e te iaa Na iaa ae 4 Auxiliary Amplifier Data enne 4 2 UUT Connection Figures nnne enhn nne aN nene 4 3 Keys that Exit Error Mode ener ener 4 4 8840A A D Converter Calibration Prompts i 4 5 8840A A D Calibration Allowable Errors 4 6 8840A Offset and Gain Calibration Prompts i 4 7 8840A High Frequency AC Calibration Prompts 5 1 Command Summary by Function nono nono nono nono ener 3 2 GommandsS eerie ERES Rr DP ERE A TE iaia 5 3 Serial Remote Control CommandS ii 5 4 Range Identifiers for Remote Commands essen 5 5 Operating State Transitions enne 5 6 Status Register Summary eene ener enne 5 7 Supported IEEE 488 Interface Function Subsets ii 5 8 Functional Elements of Commands sse 5
6. Figure 4 4 UUT Connections Resistance 4 20 Front Panel Operation Connecting the Calibrator to a UUT C EST CALIBRATOR n OUTPUT SENSE mM D em lt Qia vo el se su x Om San MOS CAUTION USE CONNECTIONS WITH EXPOSED PLUG TIPS FOR THE OHMS FUNCTION ONLY CALIBRATOR oo CALIBRATOR OUTPUT SENSE VQA 300mA com e Q 5 E U CALIBRATOR 2 WIRE Figure 4 4 UUT Connections Resistance Continued 4 21 5700A 5720A Series II Operators Manual 50Q FEEDTHROUGH TERMINATOR CALIBRATOR SUPPLIED WITH OPTION 5700A 03 OUTPUT SENSE WIDEBAND CABLE SUPPLIED WITH OPTION 5700A 03 NOTE For wideband meters with higher than 50Q input impedence use the 50Q feedthrough terminator at the meter connection end For all wideband applications take care to achieve a good 50Q impedence match use cable and connectors with a characteristic input impedence of 500 Figure 4 5 UUT Wideband AC Voltage Output Option 5700A 03 4 24 Setting the Output To set the output simply press the following sequence of keys to select an output function and amplitude PREV numeric keys gt multiplier gt function gt _ eer gt Fao For example to set the output to 10 mV dc press OPR V ENTER STBY 1
7. 5 54 Writing an SRQ and Fault Handler esses 5 55 Emulating a Fluke 5100B or 5200A Calibrator 5 56 Entering Emulation Mode 5 57 Exiting Emulation Mode 5 58 The 5720 s Display During Emulation sse 5 59 5100B Emu l tion irri i tee ta o e lencia dea dosis 5 60 Local to Remote Transitions esses 5 61 Current Output Location eee 5 62 Differences in the 5700A 5720A Series II and 5100B OHMS FUNCH ON sy eei eerie ree ener ons 5 63 Ohms Remote Program Modifications for 5100B Emulation iv Contents continued 5 64 5200A Emulation ii 5 65 Local to Remote Transitions i 5 66 Voltage and Frequency Ranges 5 67 Rounding Numeric Entries cnn 5 68 Settling TIMES inertio aaa ie 5 69 Programming External Sensing 5 70 Overload Conditions i 5 71 Phase Lock EOTS eie et ree Ree te esteri ve eda 6 Using the RS 232C Serial Interface cesses 6 1 Jnttoductton ioa O 6 2 RS 232C Interface Specifications i 6 3 Setting Up and Connecting the Serial Interface 6 4 Printing Calibration Reports 6 5 Calibration Shift ReSults i 6 6 Calibrat
8. The Control Display now shows that the DMM scale error at 19 9V is 0 0151 and the DMM linearity error at 10V is 0 035295 4 49 5700A 5720A Series II Operators Manual 4 51 Setting Output Limits An output limit feature is available to help prevent accidental damage to a UUT from overcurrent or overvoltage conditions This feature allows you to preset the maximum positive and negative allowable voltage or current output Entry limits you set prevent any input greater than the limit from being activated by entry through the front panel keys or the output adjustment controls Positive limits for voltage and current set the limits for ac voltage and current Default entry limits after power up or aser are the specified maximum and minimum for each output function 4 52 Setting Voltage and Current Limits To set voltage and current entry limits proceed as follows from or any direct operation menu 1 Press ww The display changes to RESET the power up state PREV MENU OOO 2 Press one of the softkeys under Voltage The display changes to L5 a cI LA 3 Press the Change Upper Limit or the Change Lower Limit softkey then press the numeric keys for the desired voltage limit and m or k if necessary followed by ee Note The upper voltage limit sets the limits for both dc and ac volt
9. i Bit Assignments for the ESR and ESE sss 5700A 5720A Series II Operators Manual 5 2 Sh S SA tA CA VA SA CA CA UY UY UY UY UY UJ UY UY UY V SA CA CA CA CA CA CA CA NIDI DIL DIDDL AIDA Dro POSO Cho Do Reading the Loading the ESR and ESE ri ESErb aan Instrument Status Register nono ccnn ccoo nono nncnnnconnnoos Instrument Status Change Register ii Instrument Status Change Enable Register sss Bit Assignments for the ISR ISCR and ISCE Reading the Loading the Fault Queue SR ISCR or ISC E itera ias ISCR ninia IEEE 488 Interface Configuration ii Bus Communication OVErvieW i Definition Queries and Commands sss Functional Elements Of Commandis esses Interface Messages cia The IEEE 488 Connector ener Remote Program Examples sse Printing Main Output Calibration Shift Results Verifying a Meter ai bene Ee a ERR e ape denas Remote Calibrations a anale iaia Wideband AC Module Option 5700A 03 Gain Calibration Using OPC OPC and WAL ii Writing an SRQ and Fault Handler esses Emulating a Fluke 5100B or 5200A Calibrator se Entering Emulation Mode
10. sene Exiting Emulation Mode seen The 5720 s Display During Emulation eee 5100B Emulation Current Output Location Differences in the 5700A 5720A Series II and 5100B Ohms Function ee Ohms Remote Program Modifications for 5100B Emulation 5200A Emulation Voltage and Frequency Ranges sse Rounding Numeric Entries nono nonn ccoo ccoo nnnnnnnonnnnos Settling Times Programming External Sensing sese Overload ConditionSs essen eene Phase Lock Errors ccccccccsssssssscscccsssssssssscccscssscssssseeccesesssosesseneees Remote Operation Introduction 5 1 Introduction The calibrator is capable of operating under remote control of an instrument controller computer or terminal as well as under direct local control from the front panel Remote control can be interactive with the user controlling each step from a terminal or can be set up to run automatically taking commands from a computer within an automated system This chapter tells you how to connect configure and operate the 5700A 5720A Series II in remote mode The remote programmer uses a language of commands called device dependent commands to duplicate the functions of the front panel controls An alternative language capability is included for users of the Fluke Model 5100B It lets the 57
11. sse 5 27 Loading the SRE ete rre ea ie rtr geeinigt 5 28 Event Status Register ii 5 29 Bit Assignments for the ESR and ESE n 5 30 Reading the ESR and ESE see 5 31 Loading the ESE 4 a 5 32 Instrument Status Register i 5 33 Instrument Status Change Register steres seese eet 5 34 Instrument Status Change Enable Register 5 35 Bit Assignments for the ISR ISCR and ISCE 5 36 Reading the ISR ISCR or ISCE sese 5 37 Loading the ISCE iaa 5 38 Failt QUEUE POPPPAPEOCOO 7 7U O XOOPECP A 5 39 TEEE 488 Interface Configuration esses 5 40 Bus Communication Overview sese ene 5 41 Definition Queries and Commands sss 5 42 Functional Elements Of Commandis i 5 43 Interface Messages ertet te e a a ge Ren eed ga 5 44 The IEEE 488 Connector ii 5 45 Remote Program Examples 5 46 Printing Main Output Calibration Shift Results 5 47 Veritying Meter eir n 5 48 Remote Calibration sess eee enne nennen 5 49 DOT iodo 5 50 A TO 5 51 Calibration Check errenneren oen n a 5 52 Wideband AC Module Option 5700A 03 Gain Calibration 5 53 Using OPC OPC and WAL
12. DC Zeros calibration required every 30 days 1 For fields strengths gt 1 V m but x3 V m add 0 01 of range 5700A 5720A Series II Operators Manual 5700A Series Il DC Voltage Specifications Absolute Uncertainty Relative Uncertainty 5 C from calibration temperature 1 C Range Resolution so Days 1600ays 1vear Z Hows nia ppm output uV 99 Confidence Level 8 75 9 8 2 5 5 4 5 7 1 2 8 1 2 25 1 2 4 1 2 7 4 8 4 15 3 3 5 4 7 8 8 8 15 6 3 5 8 8 100 9 100 2 5 100 4 100 10 600 11 600 3 600 4 5 600 95 Confidence Level 2 0 4 2 1 1 2 3 1 2 6 2 80 2 4 500 Notes DC Zeros calibration required every 30 days 1 For fields strengths gt 1 V m but lt 3 V m add 0 01 of range Introduction and Specifications Electrical Specifications DC Voltage Secondary Performance Specifications and Operating Characteristics Temperature Coefficient Stability Adder Y Linearity 1 C 0 10 C 1 C Bandwidth Bandwidth 24 Hours and 0 1 10Hz 10 n kHz 40 50 C pk pk sE ose ere e 0 3 4 0 3 0 4 4 0 1 0 15 0 1 0 34 1 0 3 4 0 1 0 15 0 4 0 3 2 5 0 15 0 2 i 0 15 2 0 445 0 2404 0 15 4 0 5 40 0 3 5 0 15 60 0 5 200 0 5 10 0 15 300 Notes 1 Stability specifications are included in the Absolute Uncertainty values in the primary specification tables 2 Temperature coefficient is an adder to uncertainty specifications that does not apply un
13. Output Display Control Display UUT DMM Display 4 Use the numeric keypad to set the calibrator to a point near the end of the DMM range This example uses 19 9V The displays change to Output Display Control Display UUT DMM Display toon I j lv 5 Use the output adjustment controls to adjust the calibrator s output for a reading of 19 9V the reference value on the DMM The displays change to Output Display Control Display UUT DMM Display 1 i rmaonrv 6 Press sw to identify this as the full scale endpoint for the DMM range To check the linearity error of the DMM select an output at a linearity checkpoint somewhere in the middle of the range such as 10V Entering 10V changes the displays to Output Display Control Display UUT DMM Display rman civ ILL 1 4 48 Front Panel Operation 4 Setting Output Limits The 10 000208V output setting is calculated by the calibrator using the following equation 19 9V 19 903V 19 9V 1 0001508 This is applied to 10V to yield the following 10V x 1 0001508 10 001508V The 1 3 mV zero offset is then subtracted 10 001508V 0 0013V 10 000208V 8 Use the output adjustment controls to adjust the calibrator s output for a reading of 10 0V the reference value on the DMM The displays change to Output Display Control Display UUT DMM Display
14. Using the RS 232C Serial Interface 6 Printing Calibration Reports Table 6 2 Annotation for Shift Results Printout continued The values of each internal reference as established during the most recent calibration The unit for each value is the same as listed in the reference name just to the left under the REFERENCE heading Most Recent and refers to the active constants stored in EEPROM The reference shift expressed in parts per million ppm The formula used for this calculation is 1 000 000 x Most Recent Previous Previous shift ppm For 5720 calibration check the formula is 1 000 000 x Cal check Most Recent Most Recent shift ppm The remaining pages in the calibration report give information which describe how the output has changed between the time two different calibration activities were performed See 1 The calibrator checks each range at multiple points as described further on This is the name of the range to which the shift information pertains The calibrator calculates shift information at multiple points depending on the range and mode dc V ac V etc Each line in the report for a given range contains shift information for a particular point The Point column indicates which point in the range the data is calculated for On this example page of dc voltage output shifts two points are listed for each range FS and FS FS refers to the positive full scale value of the range
15. 0 Using the RS 232C Serial Interface Printing Calibration Reports 0102 0102 0102 0102 0102 0102 0433 0433 0433 0433 0433 0099 0099 0099 0099 0099 0099 0413 0413 0413 0413 0413 0087 0087 0087 0087 0087 0087 0423 0423 0423 0423 0423 ole o o9 oe ole o o9 oe ole ole ole H o o o o o o oo oo E o o o o o o o o 5 o Figure 6 2 Calibration Shift Results Printout continued Eo o o o o o o o So 5 o ole o o9 oe o o9 oe oe o 62 62 62 62 62 66 35 35 99 35 38 45 45 45 45 45 56 68 68 48 01 21 05 05 05 05 05 76 44 44 20 88 48 6 6 15 5700A 5720A Series II Operators Manual Table 6 2 Annotation for Shift Results Printout The date and time that the calibrator printed the report This is not the date and time of calibration The user report string contents Set by the remote RPT_STR command 8 The type of calibration report Output Calibration or Calibration Check e An Output Calibration Report which can be requested at any time shows offset and gain adjustments performed at the last calibration The report is derived from two sets of calibration constants stored in non volatile memory the active set and the set that was previously active This calibration report is always based on external standards A Calibration Check Report shows recommen
16. 8 wem e E Flow Control Ctrl S Ctrl Q XON XOFF RTS or none 6 3 Setting Up and Connecting the Serial Interface Refer to the specifications for your peripheral device and proceed as follows to set up the serial interface for your application 1 Turn off the power Connect an RS 232C null modem cable such as Fluke accessory Y1702 or Y1703 to the rear panel RS 232C connector and to the peripheral device 2 Power up the calibrator 3 Press the following sequence of softkeys Setup Menus Instmt Setup Remote Port Setup gt RS 232 Port Setup The display changes to 2 2 2 E ea Set the number of data bits with the data bits softkey Set the number of stop bits with the stop bits softkey Select a method of stall control with the Stall softkey da A Select the parity mode with the Parity softkey 6 4 Using the RS 232C Serial Interface 6 Setting Up and Connecting the Serial Interface 8 Press the Next menu softkey The display changes to i d PREV L5 4 2 4 LA 9 Set the baud rate with the baud softkey 10 Set the timeout period with the shorter or longer softkey Timeout is the length of time the calibrator waits before aborting the current process after receiving a flow control command and is programmable between 0 to 30 seconds A setting of 0 causes the calibrator to wait f
17. 19 20 30 40 50 PRINT PRINT INPUT PRINT END INIT SET ALIZE THE IN 8840A FOR VDC WAIT HE 5700A TO FOR SETTLE HE DATA FROM TRIGGER THE 8840A GE HE DATA FROM COMPUTE ERROR PRINT l THE RESULTS lease wait TERFACE SLOW READ AUTORANGE 10V DC REQUEST OUTPUT VALUE THE 5700A TO TAKE A READING THE 8840A 5700A ADDRESS IS 4 Starting Zeros Calibration P 4 CAL ZERO OPC 4 A Zeros calibration is finished Remote Operation 5 Remote Program Examples 5 50 Calibration 19 THIS IS A PROGRAM FOR REMOTE MAIN OUTPUT CALIBRATION 20 25 REMOTE 39 PRINT 04 CLS SRE 8 ENABLE EAV TO TRIGGER SRQ AQ ON SRQ GOTO 60 SRO HANDLER 59 GOTO 149 START MAIN PROGRAM 62 PRINT 4 FAULT INPUT 4 A SRQ HANDLER GET FAULT CODE 79 IF AS Y GOTO 129 IF NO FAULT EXIT 89 PRINT 04 EXPLAIN A INPUT 04 AS GET EXPLANATION 90 PRINT 100 PRINT FAULT A OCCURRED AS DISPLAY EXPLANATION 119 GOTO 68 GET NEXT FAULT 120 A SPL 4 SERIAL POLL TO CLEAR SP BYTE 130 RESUME 530 END OF SRO HANDLER 140 PRINT Ambient temperature in Celsius MAIN PROGRAM BEGINS 150 INPUT T GET TEMPERATURE FROM OPERATOR 160 PRINT 04 CAL TEMP T SET CAL TEMPERATURE 179 PRINT Connect the 19V standard as shown in the manual X GOSUB 479 180 PRINT Enter the true value of 10V standard in volt
18. I V QmfC Where V 1V f 1kHz 1x 10 Hz C 300 pF 300 x 10 F So the total leakage is I 0 609005300 10 P 1 9 pA This will add in quadrature to the current through a resistive load causing an error of 4100 1 9 100 0 018 pA At 100 uA the calibrator s 90 day uncertainty is specified to be 140 ppm 20 nA or 0 034 uA The current leakage here is over half the calibrator s uncertainty The error caused by this leakage can be minimized by using the current guard 5700A 5720A Series Il Operators Manual 4 22 4 23 Four Wire Vs Two Wire Resistance Connections Figure 4 4 shows four different ways to connect to a UUT for resistance calibration Figure 4 4A shows a UUT with four wire sensing For such meters you should always take advantage of the four wire sensing capability and use external sensing to achieve the highest accuracy Four wire sensing is available for all resistance values except 100 MO For calibrating a meter with only a two wire resistance mode such as a typical handheld DMM refer to Figures 4 4B through 4 4D For resistances of 19 KQ or lower in two wire mode compensation circuitry inside the calibrator is available to remove errors introduced by resistance in the path between the front panel terminals and the precision resistor Depending on how you connect the meter you can use two wire compensation referenced at the UUT terminals Figure 4 4C or at the ends of the UUT s test lea
19. STB Description Sequential command Returns the status byte The status byte is described under Status Information 0 0 NOD dA ON Integer Decimal equivalent of the status byte Example STB Returns 72 if bits 3 EAV and 6 MSS are set 1 and the rest of the bits are reset 0 STBY Description Overlapped command ignored if not in remote Puts the calibrator in standby None STOP_PR Description Sequential command ignored if not in remote Stops printing a report None TST Description Sequential command ignored if not in remote Initiates a series of self tests then returns a 0 for pass or a 1 for fail If any faults are detected they are logged into the fault queue where they can be read by the FAULT query Integer 0 for Pass or 1 for Fail 5 40 Remote Operation 5 Commands Table 5 2 Commands continued UNCERT Description Sequential command Returns the calculated maximum uncertainty of the calibrator s output according to the selected calibration interval The same as pressing from the front panel Response 1 Float Uncertainty of the calibrator s output 1 0 if no specification is available 2 String Units for response 1 PPM PCT V A OHM etc 3 Integer The specification interval in days VOUT Description Sequential command Returns the output amplitude expressed in volts if the currently selected units are dBm Response 1 Float Output ampl
20. The calibrator s output value is now OV minus the offset value in this example the 1 3 mV output value is shown on the Output Display The calibrator s reference value is set to OV The reference value is shown on the top line of the Control Display The offset value is shown on the second line of the Control Display After step 2 the Control Display and Output Display look like this Output Display Control Display If you enter a new value the offset value is subtracted from the new value to create the new output The newly entered value becomes the new reference value shown on the middle line of the Control Display For example if you enter 1V the Output Display shows 0 9987000V while the Control Display shows Ref 1 0000000V The offset value remains in effect until you press vs again turn off the power select a different output function for example changing from voltage to current output or press Setup Menus 4 45 5700A 5720A Series Il Operators Manual 4 49 Programming a Scale Factor 4 46 You can use the sae key in ac and dc voltage and current functions to apply a scale factor to subsequent outputs After you establish a scale factor the correct proportion of it is applied to all subsequent entries to compensate for a UUT s scale error You turn off this scale factor by pressing again Both the scale error and the keypad entered value are shown on the Control Di
21. Wideband AC Voltage Output Option 5700A 03 WIDEBAND Connector 3 10 Wideband voltmeter flatness test 4 64 Index continued 5700A 5720A Series Il Operators Manual
22. lero is on See Chapter 4 for instructions Toggles the Wideband AC Voltage Module Option 5700A 03 and sets the calibrator to standby When enabled the ac voltage output from 10 Hz to 30 MHz is available at the front panel coaxial connector Wideband is disabled whenever W BND is toggled off or when another function such as current is selected Chapter 4 contains more information Wideband ouput y sese STBY EXGRD BND 800ST MENU wa P vo TRIS MAX A i MEW AMPL AQ 2 Y REF CE FREQ RMS m dBm OFFSET Hz SPEC current V SUARD GROUND ouTPuT uw MAX M x10 Figure 3 1 Front Panel Features 5700A 5720A Series II Operators Manual Previous Menu Softkeys Power Switch O Le RS D Table 3 1 Front Panel Features continued Enables or disables output from an amplifier when it would not otherwise be automatically selected Sets the calibrator to standby if this selection moves the output location When available an amplifier is automatically selected for output settings that exceed the calibrator s capabilities but fall within the limits of the selected amplifier The key is only needed to activate an amplifier for an output setting that is available from either the calibrator or the amplifier This allows you to take advantage of amplifier capabilities b
23. 100 yA 1 150 I 7 Current produced by Ohmmeter A 190 k 2 2 3 5 50 pA 500 yA 150 1M 2 5 2 5 6 5 20 pA 100 pA 200 1 9 M 3 5 3 10 2 5 10 pA 50 pA 200 10M 10 5 20 0 5 2 pA 10 pA 300 19M 20 8 40 0 25 1 pA 5 pA 300 100 M 50 12 100 50 200 nA 1 pA 500 Notes 1 Stability specifications are included in the Absolute Uncertainty values in the primary specification tables 2 Temperature coefficient is an adder to uncertainty specifications that does not apply unless operated more than 5 C from calibration temperature or calibrated outside the range 19 C to 24 C Two examples Calibrate at 20 C Temperature coefficient adder is not required unless operated below 15 C or above 25 C Calibrate at 26 C Add 2 C temperature coefficient adder Additional temperature coefficient adder is not required unless operated below 21 C or above 31 C 3 Refer to current derating factors table for loads outside of this range 4 Active two wire compensation may be selected for values less than 100 kQ with either the front panel or the meter input terminals as reference plane Active compensation is limited to 11 mA load and to 2 V burden Two wire compensation can be used only with Q meters that source continuous not pulsed dc current 1 31 5700A 5720A Series II Operators Manual 1 32 Current Derating Factors Nominal Value Two Wire Comp Four Wire Four Wire 9 1 1 2 I lt L I lt L lu lt
24. 16 250 70 430 130 1050 350 2200 850 500 800 160 250 75 60 120 160 250 350 500 1500 1250 4300 2700 8500 500 8 160 2 5 80 0 8 220 3 5 500 8 1500 90 4700 90 400 4 5 170 4 5 55 4 5 90 4 5 210 7 380 13 900 25 2900 25 400 5 170 5 55 5 90 5 210 7 380 12 900 25 2900 25 400 13 170 8 55 8 90 8 210 25 380 25 900 35 2900 80 400 80 130 25 35 6 85 16 170 70 340 130 850 350 1700 850 400 800 130 250 35 60 85 160 170 350 400 1500 1000 4300 2200 8500 400 8 130 2 5 40 0 8 85 3 5 270 8 1200 90 4200 90 500 4 5 190 4 5 60 4 5 100 4 5 230 7 420 13 1000 25 3200 25 500 5 190 5 60 5 100 5 230 7 420 12 1000 25 3200 25 500 13 190 8 60 8 100 8 230 25 420 25 1000 35 3200 80 450 80 140 25 40 6 95 16 190 70 380 130 950 350 1900 850 450 800 140 250 40 60 95 160 190 350 450 1500 1100 4300 2400 8500 ppm output mV 450 8 140 2 5 45 0 8 95 3 5 300 8 1300 90 4500 90 220V 100 mv 10 20 400 8 20 40 130 2 5 40 20 k 65 0 8 20k 50k 170 3 5 50 k 100 k 400 8 100k 300k 1300 90 300k 500k 4300 90 500k 1M 10 500 190 11 000 190 11 300 190 11 500 190 10 500 190 11 000 190 1100 V 1 mv 15 50 340 16 360 16 380 16 400 16 3
25. 220 4 80 1 5 40 0 6 65 1 120 2 5 600 16 3800 40 7000 80 260 16 45 3 5 Introduction and Specifications 1 Electrical Specifications 5725A Amplifier 40 1k 75 4 80 4 85 4 90 4 50 4 55 4 1k 20k 105 6 125 6 135 6 165 6 85 6 105 6 20 k 30k 230 11 360 11 440 11 600 11 160 11 320 11 750 V 30 k 50 k 230 11 360 11 440 11 600 11 160 11 320 11 50 k 100 k 600 45 1300 45 1600 45 2300 45 380 45 1200 45 Notes T Maximum output 250 V from 15 50 Hz 2 See Volt Hertz capability in Figure A 1 21 5700A 5720A Series II Operators Manual 5700A Series Il AC Voltage Specifications 99 Confidence Level Relative Uncertainty Absolute Uncertainty 5 C from calibration temperature 1 C Frequency Hz 2 2 mV 1nV 100 k 300 k 300 k 500 k 500k 1M 22mV 10nV 100 k 300 k 300 k 500 k 500k 1M 220 mV 100 nV 100 k 300 k 300 k 500 k 500k 1M 220 V 100 mv 1 22 10 20 20 40 40 20k 20 k 50 k 50 k 100 k 10 20 20 40 40 20k 20 k 50 k 50 k 100 k 10 20 20 40 40 20k 20 k 50 k 50 k 100 k 10 20 20 40 40 20k 20 k 50 k 50 k 100 k 100 k 300 k 300 k 500 k 500k 1M 10 20 20 40 40 20k 20 k 50 k 50 k 100 k 100 k 300 k 300 k 500 k 500k 1M 500 5 200 5 100 5 340 5 800 8 1100 15 1500 30 4000 40 500 6 200 6 100 6 340
26. 5 48 eb 5 26 Per Service Request Line SRQ Service Request SRQ is an IEEE 488 1 bus control line that the calibrator asserts to notify the controller that it requires some type of service Many instruments can be on the bus but they all share a single SRQ line To determine which instrument set SRQ the Controller normally does a serial poll of each instrument The calibrator asserts SRQ whenever the RQS bit in its Serial Poll Status Byte is 1 This bit informs the controller that the calibrator was the source of the SRQ The calibrator clears SRQ and RQS whenever the controller performs a serial poll of the calibrator s IEEE 488 interface sends CLS or whenever the MSS bit is cleared The MSS bit is cleared only when ESB MAV EAV and ISCB are 0 or they are disabled by their associated enable bits in the SRE register being set to 0 Service Request Enable Register The Service Request Enable Register SRE enables or masks the bits of the Serial Poll Status Byte The SRE is cleared at power up Refer to Serial Poll Status Byte for the bit functions Loading the SRE By resetting to 0 the bits in the SRE you can mask disable associated bits in the serial poll status byte Bits set to 1 enable the associated bit in the serial poll status byte The following sample program enables the ESB bit 19 THIS PROGRAM SETS ESB IN THE SRE 20 GOSUB 90 GET AND PRINT OLD SRE 30 A A 32 ENABLE ESB BIT 5
27. CAL RPT Sequential command Returns a report for a specified calibration activity see Chapter 6 for format details Parameter CAL Output change report for calibration CHECK Output change report for cal check RAW A list of all calibration constants Response String lt EOL gt lt formatted report gt Example REM THIS 1722A PROGRAM SAVES FORMATTED REPORT IN A FILE CLOSE 11 OPEN MFO CALRPT AS NEW FILE 1 PRINT 4 CAL_RPT CAL INPUTLINE 4 A THROW AWAY BEGINNING QUOTE DO INPUTLINE 4 A PRINT 1 A IF LEFT A 1 GOTO 60 1 WHILE NOT END OF FILE 5 21 5700A 5720A Series II Operators Manual Table 5 2 Commands continued CAL SHIFT Returns a particular set of output shifts from a particular range Parameters 1 CAL Output changes due to calibration check od CHECK All output changes due to calibration check 2 Range identifier from Table 5 4 Response String lt EOL gt range name gt lt points gt lt EOL gt lt mag 1 gt lt freq 1 gt lt offset 1 gt lt ashift 1 gt lt rshift 1 gt lt sshift 1 gt lt spec 1 gt lt EOL gt lt mag n gt lt freq n gt lt offset n gt lt ashift n gt lt rshift 1 gt lt sshift n gt lt spec n gt lt EOL gt Where lt range name gt Range identifier from Table 5 4 lt points gt Integer Number of points for the range magn Float Magnitude for point n in range units freq n gt Float Frequency for point n in Hz lt o
28. Clear calibrator is addressed as a listener Serial Poll Disable Cancels a Serial Poll Enable Part of SPL Serial Poll Enable Causes the calibrator to return a Status Byte to Part of SPL the next command that address it as a listener no matter what the command is Unlisten Unaddresses a specific device on the bus asa None listener The controller send UNL automatically after the device has successfully received a device dependent or common command UNT Untalk Unaddresses a specific device on the bus asa None listener The controller sends UNT automatically after it receives the response from a device dependent or common query Table 5 10 Interface Messages Sent by the Calibrator A message that appears when the calibrator asserts the EOI control line which happens when the calibrator transmits the ASCII character LF for its termination sequence or terminator Data Accepted Sets the handshake signal line NDAC low ID Data Valid Asserts the handshake signal line DAV m Ready For Data Sets the handshake signal line NRFD low Service Request A control line that can be asserted by any device on the bus to indicate that it requires attention For details see Checking the Calibrator s Status The response sent to a serial poll SPE by the calibrator 5 59 5700A 5720A Series II Operators Manual 5 44 The IEEE 488 Connector The IEEE 488 connector on the rear panel mates with an IEEE 488 St
29. RPT STR OPT and STATE commands Those strings include leading and trailing quotation marks See Table 5 2 for details Input Buffer Operation As the calibrator receives each data byte from the controller it places the bytes in a portion of memory called the input buffer The input buffer holds up to 128 data bytes and operates in a first in first out fashion The calibrator treats the EOI IEEE 488 control line as a separate data byte and inserts it into the input buffer if it is encountered as part of a message terminator Input buffer operation is transparent to the program running on the controller If the controller sends commands faster than the calibrator can process them the input buffer fills to capacity When the input buffer 1s full the calibrator holds off the IEEE 488 bus with the NRFD Not Ready For Data handshake line When the calibrator has processed a data byte from the full input buffer it then completes the handshake allowing the controller to send another data byte The calibrator clears the input buffer on power up and on receiving the DCL Device Clear or SDC Selected Device Clear messages from the controller Under RS 232C serial port remote control using Control S XOFF protocol the calibrator issues a Control S XOFF when the input buffer becomes 80 full The calibrator issues a Control Q XON when it has read enough of the input buffer so that it is less than 4096 full When using RTS Request
30. SCALE remote command Screen Saver 3 3 Selecting Amplifiers 4 10 Selecting Line Voltage 2 6 Selecting Output Binding Posts 2 8 SENSE Binding Post 3 10 SENSE binding posts 4 15 SENSE Binding Posts 3 12 Sensing external when to use Serial Poll Status Byte 5 47 Serial Port Remote Control See Remote Control RS 232C Service Centers 1 7 Service Information 2 4 Setting up IEEE 488 interface 5 4 Installing the 5700A 5720A Series II 2 4 RS 232C Serial Interface 6 4