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Keithley 2000, Руководство по калибровке

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General program instructions

 

1.

With the power off, connect the Model 2000 and the calibrator to the IEEE-488 interface 
of the computer. Be sure to use shielded IEEE-488 cables for bus connections. 

2.

Turn on the computer, the Model 2000, and the calibrator. Allow the Model 2000 and the 
calibrator to warm up for at least one hour before performing calibration.

3.

Make sure the Model 2002 is set for a primary address of 16. (Use the front panel GPIB 
key to check or change the address.)

4.

Make sure the calibrator primary address is at its factory default setting of 4. 

5.

Make sure that the computer bus driver software (CECHP.EXE) is properly initialized. 

6.

Enter the QBasic editor, and type in the program below. Check thoroughly for errors, 
then save it using a convenient filename. 

 

NOTE

 

The program assumes a default calibration code of KI002000. If the calibration code 
has been changed, modify the :CAL:PROT:CODE parameter accordingly.

 

7.

Run the program, and follow the prompts on the screen to perform calibration. 

 

Program C-1 Model 2000 calibration program

 

' Model 2000 calibration program for use with the Fluke 5700A calibrator.
' Rev. 1.0, 10/18/94

OPEN "IEEE" FOR OUTPUT AS #1

' Open IEEE-488 output path.

OPEN "IEEE" FOR INPUT AS #2

' Open IEEE-488 input path.

PRINT #1, "INTERM CRLF"

' Set input terminator.

PRINT #1, "OUTTERM LF"

' Set output terminator.

PRINT #1, "REMOTE 4 16"

' Put 2000, 5700A in remote.

PRINT #1, "CLEAR"

' Send DCL.

PRINT #1, "OUTPUT 16;:SYST:PRES;*CLS"

' Initialize 2000.

PRINT #1, "OUTPUT 16;*ESE 1;*SRE 32"

' Enable OPC and SRQ

PRINT #1, "OUTPUT 4;*RST;*CLS;STBY"

' Reset 5700A calibrator.

PRINT #1, "OUTPUT 4;CUR_POST NORMAL"

' Normal current output.

C$ = ":CAL:PROT:"

' 2000 partial command header.

'
CLS

 ' Clear CRT.

PRINT "Model 2000 Multimeter Comprehensive Calibration Program"
PRINT #1, "OUTPUT 16;:CAL:PROT:CODE 'KI002000'"' Send KI002000 cal code.
PRINT #1, "OUTPUT 16;:CAL:PROT:INIT"

' Initiate calibration.

GOSUB ErrCheck
RESTORE CmdList
'
FOR I = 1 TO 25

' Loop for all cal points.

READ Msg$, Cmd$

' Read message, cal strings.

SELECT CASE I 

' Select cal sequence.

CASE 1, 2

PRINT Msg$
GOSUB KeyCheck

CASE 3

PRINT "Connect calibrator to INPUT and SENSE jacks."
PRINT "Wait 3 minutes."
GOSUB KeyCheck
PRINT #1, "OUTPUT 4;EXTSENSE OFF"
PRINT #1, "OUTPUT 4;"; Msg$
PRINT #1, "OUTPUT 4;OPER"

 

Calibration Program

C-3

Содержание 2000

Страница 1: ...Model 2000Multimeter Calibration Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E ...

Страница 2: ...EQUENTIAL DAMAGES ARISING OUT OF THE USE OF ITS INSTRUMENTS AND SOFTWARE EVEN IF KEITHLEY INSTRUMENTS INC HAS BEEN ADVISED IN ADVANCE OF THE POSSIBILITY OF SUCH DAMAGES SUCH EXCLUDED DAM AGES SHALL INCLUDE BUT ARE NOT LIMITED TO COSTS OF REMOVAL AND INSTALLATION LOSSES SUSTAINED AS THE RESULT OF INJURY TO ANY PERSON OR DAMAGE TO PROPERTY Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44...

Страница 3: ...ultimeter Calibration Manual 1994 Keithley Instruments Inc All rights reserved Cleveland Ohio U S A Fourth Printing December 2001 Document Number 2000 905 01 Rev D Title Page Page 1 Monday December 10 2001 9 09 PM ...

Страница 4: ...d with the previous Revision of the manual are incorporated into the new Revision of the manual Each new Revision includes a revised copy of this print history page Revision A Document Number 2000 905 01 November 1994 Addendum A Document Number 2000 905 02 June 1995 Revision B Document Number 2000 905 01 June 2000 Revision C Document Number 2000 905 01 January 2001 Revision D Document Number 2000 ...

Страница 5: ...an sient over voltages Installation Category II connections require protection for high transient over voltages often associated with localAC mains connections Assume all measurement control and data I O connections are for connection to Category I sourc es unless otherwise marked or described in the Manual Exercise extreme caution when a shock hazard is present Lethal voltage may be present on ca...

Страница 6: ... manual explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION heading in a manual explains hazards that could damage the instrument Such damage may invalidate the war ranty Instrumentation and accessories shall not be connected to humans Before performing any maintenance disconnect ...

Страница 7: ... considerations 2 4 Calibration code 2 5 Comprehensive calibration 2 6 Front panel calibration 2 7 SCPI command calibration 2 14 3 Calibration Command Reference Introduction 3 2 Command summary 3 4 Miscellaneous calibration commands 3 6 DC calibration commands 3 10 AC calibration commands 3 16 Manufacturing calibration 3 18 Bus error reporting 3 19 Detecting calibration step completion 3 20 A Spec...

Страница 8: ...1 11 Connections for resistance verification 100Ω 10MΩ ranges 1 12 Connections for resistance verification 100MΩ range 1 13 2 Calibration Low thermal short connections 2 8 Calibrator connections for DC volts and ohms portion of comprehensive calibration 2 9 Connections for DC and AC amps comprehensive calibration 2 11 Connections for AC volts calibration 2 12 Synthesizer connections for manufactur...

Страница 9: ...ation summary 2 10 DC current calibration summary 2 11 Connections for AC volts calibration 2 12 AC current calibration summary 2 13 DC voltage calibration programming steps 2 16 Resistance calibration programming steps 2 16 DC current calibration programming steps 2 17 AC voltage calibration programming steps 2 18 AC current calibration programming steps 2 19 Recommended equipment for manufacturi...

Страница 10: ...1 Performance Verification ...

Страница 11: ...y and its performance is outside specified lim its contact your Keithley representative or the factory to determine the correct course of action This section includes the following information Verification test requirements Explains the test requirements Performing the verification procedures Provides general information about the test procedures Verifying DC voltage Provides the procedure to veri...

Страница 12: ...e power The Model 2000 Multimeter requires a line voltage of 100V 120V 220V 240V 10 and a line frequency of 45Hz to 66Hz or 360Hz to 440Hz Warm up period Allow the Model 2000 Multimeter to warm up for at least one hour before conducting the ver ification procedures If the instrument has been subjected to temperature extremes those outside the ranges stated above allow additional time for the instr...

Страница 13: ...ment Fluke 5700A Calibrator DC voltage AC voltage 1kHz 50kHz DC current AC current 1kHz Resistance 100mV 14ppm 1 0V 7ppm 10V 5ppm 100V 7ppm 1000V 9ppm 100mV 200ppm 1 0V 82ppm 10V 82ppm 100V 90ppm 700V 85ppm 10mA 60ppm 100mA 70ppm 1A 110ppm 2 2A 94ppm 1A 690ppm 2 2A 682ppm 100Ω 17ppm 1kΩ 12ppm 10kΩ 11ppm 100kΩ 13ppm 1MΩ 18ppm 10MΩ 37ppm 100MΩ 120ppm Fluke 5725A Amplifier AC Voltage 50kHz 700V 375pp...

Страница 14: ...10V input value Using the Model 2000 one year accuracy specification for 10V DC of 30ppm of reading 5ppm of range the cal culated limits are Reading limits 10V 10V 30ppm 10V 5ppm Reading limits 10V 0003 00005 Reading limits 10V 00035V Reading limits 9 99965V to 10 00035V Restoring factory defaults Before performing the verification procedures restore the instrument to its factory defaults as follo...

Страница 15: ... autorange hysteresis may cause the Model 2000 to be on an incorrect range For each test signal you must manually set the correct range for the Model 2000 using the range keys Make sure the calibrator is in operate before you verify each measurement Always let the source signal settle before taking a reading Do not connect test equipment to the Model 2000 through a scanner or other switching equip...

Страница 16: ...nd allow the reading to settle 4 Enable the Model 2000 REL mode Leave REL enabled for the remainder of the DC volts verification tests 5 Source positive and negative full scale voltages for each of the ranges listed in Table 1 2 For each voltage setting be sure that the reading is within stated limits Table 1 2 DCV reading limits DCV Range Applied DC voltage Reading limit 1 year 18 C 28 C 100mV 1V...

Страница 17: ...s to theAC voltage calibrator as shown in Figure 1 2 2 Select the AC volts function by pressing the ACV key 3 Set the Model 2000 for the 100mV range make sure that REL is disabled 4 Source 1kHz and 50kHz AC voltages for each of the ranges summarized in Table 1 3 and make sure that the respective Model 2000 readings fall within stated limits 2000 MULTIMETER R 5700A Calibrator Output AC Voltage 5725...

Страница 18: ...V 99 9100 to 100 0900mV 0 999100 to 1 000900V 9 99100 to 10 00900V 99 9100 to 100 0900V 699 355 to 700 645V 99 8300 to 100 1700mV 0 998300 to 1 001700V 9 98300 to 10 01700V 99 8300 to 100 1700V 698 785 to 701 215V If the 5725A amplifier is not available change the 700V 50kHz step to 219V 50kHz Reading limits for 219V 50kHz 218 362 to 219 638V Performance Verification 1 9 ...

Страница 19: ... currents for each of the ranges listed in Table 1 4 and verify that the readings for each range are within stated limits Table 1 4 DCI limits DCI Range Applied DC current Reading limits 1 year 18 C 28 C 10mA 100mA 1A 3A 10 0000mA 100 0000mA 1 000000A 2 20000A 9 99420 to 10 00580mA 99 8700 to 100 1300mA 0 999120 to 1 000880A 2 19724 to 2 20276A Source positive and negative currents with values sho...

Страница 20: ... Select the AC current function by pressing the ACI key 3 Set the Model 2000 for the 1A range 4 Source 1A and 2 2A 1kHz AC currents as summarized in Table 1 5 and verify that the readings are within stated limits Table 1 5 ACI limits ACI Range Applied AC current Reading limits 1 year 18 C 28 C 1kHz 1A 3A 1 000000A 2 20000A 0 998600 to 1 001400A 2 19490 to 2 20510A 2000 MULTIMETER R 5700A Calibrato...

Страница 21: ...tual calibrator resistance values 6 Source the nominal full scale resistance values for 100Ω 10MΩ ranges summarized in Table 1 6 and verify that the readings are within stated limits 7 Connect the Model 2000 INPUT and SENSE jacks to the calibrator as shown in Figure 1 6 8 Disable external sense on the calibrator 9 Set the Model 2000 to the 100MΩ range 10 Source a nominal 100MΩ resistance value and...

Страница 22: ... to 1 000110MΩ 9 99590 to 10 00410MΩ 99 8470 to 100 1530MΩ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ 2000 MULTIMETER R Model 2000 5700A Calibrator Output 2 wire Resistance Output HI Input LO Output LO Note Use shielded cables to minimize noise Disable calibrator external se...

Страница 23: ...2 Calibration ...

Страница 24: ...r over the IEEE 488 bus or the RS 232 link NOTE Manufacturing calibration is required in the field only if the Model 2000 has been re paired This section includes the following information Environmental conditions Explains the type of environment needed for calibration Calibration considerations Summarizes test conditions to observe when performing cali bration Calibration code Explains how to ent...

Страница 25: ...bjected to temperature extremes those outside the ranges stated in the above section allow extra time for the instrument s internal temperature to stabilize Typ ically allow one extra hour to stabilize a unit that is 10 C 18 F outside the specified tempera ture range Also allow the test equipment to warm up for the minimum time specified by the manufac turer Line power The Model 2000 Multimeter re...

Страница 26: ...uipment to the Model 2000 through a scanner or other switching equipment If an error occurs during calibration the Model 2000 will generate an appropriate error message See Section 3 and Appendix B for more information WARNING The maximum common mode voltage voltage between INPUT LO and chas sis ground is 500 V peak Exceeding this value may cause a breakdown in insulation creating a shock hazard S...

Страница 27: ... to in crement numbers and press the down range key to specify alphabetic letters Confirm the code by pressing ENTER 4 The Model 2000 allows you to define a new calibration code Use the up and down range keys to toggle between yes and no Choose N if you do not want to change the code ChooseY if you want to change the code The unit then prompts you to enter a new code Enter the code and press ENTER...

Страница 28: ...u need for comprehensive DC only and AC only calibration procedures You can use alternate equipment such as a DC transfer standard and characterized resistors as long that equipment has specifications at least as good as those listed in the table Canceling calibration You can cancel the calibration process at any time by pressing EXIT Table 2 1 Recommended equipment for comprehensive DC only or AC...

Страница 29: ...e up and down range keys to scroll through the available calibration menu items until the unit displays RUN then press ENTER C At the prompt enter the calibration code The default code is 002000 Use the left and right arrow keys to move among the digits use the up range key to increment numbers and press the down range key to specify alphabetic letters Confirm the code by pressing ENTER D Choose N...

Страница 30: ...nect the low thermal short properly to the HI LO and SENSE termi nals Keep drafts away from low thermal connections to avoid thermal drift which could affect calibration accuracy 2 Press ENTER to start short circuit calibration While the unit is calibrating the unit will display CALIBRATING 3 When the unit is done calibrating it will display the following prompt OPEN CIRCUIT 4 Remove the calibrati...

Страница 31: ...and connect the sense leads when external sensing is to be turned on 2 Set the calibrator to output DC volts and turn external sense off 3 Perform the steps listed in Table 2 3 to complete DC volts calibration For each calibra tion step Set the calibrator to the indicated value and make sure it is in operate Press the ENTER key to calibrate that step Wait until the Model 2000 finishes each step Th...

Страница 32: ...zed in Table 2 4 For each step Set the calibrator to the indicated value and place the unit in operate If the calibrator cannot output the exact resistance value use the Model 2000 left and right arrow keys and the range keys to adjust the Model 2000 display to agree with the calibrator resis tance Press the ENTER key to calibrate each point Wait for the Model 2000 to complete each step before con...

Страница 33: ...l 2000 display indicates the correct calibration current Press ENTER to complete each step Allow the Model 2000 to finish each step NOTE If you are performing DC only calibrator proceed to the Setting calibration dates paragraph Table 2 5 DC current calibration summary Calibration step Calibrator current Allowable range 10mA 100mA 1A 10 00000mA 100 0000mA 1 00000A 9mA to 11mA 90mA to 110mA 0 9A to...

Страница 34: ...00 completes each step Table 2 6 AC voltage calibration summary Calibration step Calibrator voltage frequency 10mV AC at 1kHz 100mV AC at 1kHz 100mV AC at 50kHz 1V AC at 1kHz 1V AC at 50kHz 10V AC at 1kHz 10V AC at 50kHz 100V AC at 1kHz 100V AC at 50kHz 700V AC at 1kHz 10 00000mV 1kHz 100 0000mV 1kHz 100 0000mV 50kHz 1 000000V 1kHz 1 000000V 50kHz 10 00000V 1kHz 10 00000V 50kHz 100 0000V 1kHz 100 ...

Страница 35: ...Set these dates as follows 1 At the CAL DATE mm dd yy prompt use the left and right arrow keys and the range keys to set the calibration date then press ENTER 2 The unit will then prompt you to enter the next calibration due date with this prompt CAL NDUE mm dd yy Use the left and right arrow keys and the range keys to set the calibration due date then press ENTER 3 The unit will prompt you to sav...

Страница 36: ...As with front panel calibration you can choose to perform complete DC only or AC only calibration When sending calibration commands be sure to include a space character between each command and parameter Preparing the Model 2000 for calibration 1 Connect the Model 2000 to the IEEE 488 bus of the computer using a shielded IEEE 488 cable such as the Keithley Model 7007 or connect the unit to a compu...

Страница 37: ...ter front panel short and open steps do the following 1 Connect the calibrator to the Model 2000 as shown in Figure 2 2 Allow three minutes for thermal equilibrium NOTE Although 4 wire connections are shown the sense leads are connected and discon nected at various points in this procedure by turning calibrator external sense on or off as appropriate If your calibrator does not have provisions for...

Страница 38: ...ion resistance than that shown Wait until the Model 2000 completes each step before continuing Table 2 8 DC voltage calibration programming steps Calibration step Calibrator voltage Calibration command Parameter range 10V 10V 100V 10 00000V 10 00000V 100 0000V CAL PROT DC STEP3 10 CAL PROT DC STEP4 10 CAL PROT DC STEP5 100 9 to 11 9 to 11 90 to 110 Change parameter accordingly if using a different...

Страница 39: ...indicated programming command Change the current parameter if you are using a different calibration current Wait until the Model 2000 completes each step before continuing NOTE If you are performing DC only calibration proceed to the Programming calibration dates paragraph Table 2 10 DC current calibration programming steps Calibration step Calibrator current Calibration command Parameter range 10...

Страница 40: ... Table 2 12 For each step Set the calibrator to the indicated current and frequency and make sure the unit is in operate You must use the stated current and frequency Send the indicated programming command Wait until the Model 2000 completes each step before continuing Table 2 11 AC voltage calibration programming steps Calibration step Calibrator voltage frequency Calibration command 10mV AC at 1...

Страница 41: ...g the entire calibration procedure send the following command to save the new calibration constants CAL PROT SAVE NOTE Calibration constants will not be saved unless the SAVE command is sent Locking out calibration After saving calibration send the following command to lock out calibration CAL PROT LOCK Table 2 12 AC current calibration programming steps Calibration step Calibrator current frequen...

Страница 42: ...ing manufacturing calibration To unlock manufacturing calibration press and hold in the OPEN key while turning on the power Measuring the synthesizer voltage The 3Hz synthesizer signal amplitude must be accurately measured using the digital multim eter listed in Table 2 13 Proceed as follows 1 Connect the synthesizer output to the digital multimeter input jacks see Figure 2 5 2 Turn on the synthes...

Страница 43: ...After the lastAC current calibration step the instrument will prompt you to enter 3Hz at 1V RMS and 1kHz For each prompt Low frequency cal Set the synthesizer to output a 1V RMS 3Hz sine wave Use the left and right arrow keys and the range keys to adjust the displayed voltage value to the value you measured and recorded earlier Press Enter Frequency cal Set the synthesizer to output a 1V RMS sine ...

Страница 44: ...ks with the INPUTS switch 8 Set the synthesizer output to 1V RMS at 3Hz then send the following command CAL PROT AC STEP14 Cal_voltage Here Cal_voltage is the actual 3Hz synthesizer signal amplitude you recorded earlier 9 Set the synthesizer output to 1V RMS at 1kHz then send the following command CAL PROT AC STEP15 1E3 10 Send the following commands to set calibration dates save calibration const...

Страница 45: ...3 Calibration CommandReference ...

Страница 46: ... various Model 2000 SCPI bus calibra tion commands Section 2 of this manual covers detailed calibration procedures For information about additional commands to control other instrument functions refer to the Model 2000 User s Manual 3 2 Calibration Command Reference ...

Страница 47: ...those commands required to calibrate the DCV DCA and ohms functions AC calibration commands Covers commands that calibrate Model 2000 ACV and ACI functions Manufacturing calibration commands Summarizes the commands necessary to perform the manufacturing calibration steps Bus error reporting Discusses bus calibration errors and discusses how to obtain error in formation Detecting calibration step c...

Страница 48: ...ock except queries and CODE Calibration code or password default KI002000 Request the number of times the unit has been calibrated Initiate calibration Lock out calibration opposite of enabling cal with CODE command Request comprehensive cal lock state 0 locked 1 unlocked Save cal constants to EEROM Send cal date to 2000 Request cal date from 2000 Send next due cal date to 2000 Request next due ca...

Страница 49: ...tep 100V AC at 50kHz step 700V AC at 1kHz step 100mA AC at 1kHz step 1A AC at 1kHz step 2A AC at 1kHz step 1V AC at 3Hz step 1 1V AC at 1kHz step 1 NOTES 1 DC STEP0 AC STEP14 and AC STEP15 are one time factory calibration points and are only valid in manufacturing calibration mode 2 Upper case letters indicated short form of each command For example instead of sending CALibra tion PROTected INITia...

Страница 50: ... comprehensive or manufacturing calibration command The default calibration code is KI002000 Notes The CODE command should be sent only once before performing either the comprehensive or factory calibration Do not send CODE before each calibration step To change the code first send the current code then send the new code Example CAL PROT CODE KI002000 Send default code of KI002000 COUNt CALibratio...

Страница 51: ...mat cal prot lock Parameter None Description The LOCK command allows you to lock out both comprehensive and man ufacturing calibration after completing those procedures Thus LOCK per foms the opposite of enabling calibration with the CODE command Note To unlock comprehensive calibration send the CODE command To unlock manufacturing calibration hold in the OPEN key while turning on the power Exampl...

Страница 52: ...anently store calibration constants Example CAL PROT SAVE Save calibration constants DATE CALibration PROTected DATE Purpose To send the calibration date to the instrument Format cal prot date year month day Parameters year 1994 to 2093 month 1 to 12 day 1 to 31 Query format cal prot date Response year month day Description The DATE command allows you to store the calibration date in instrument me...

Страница 53: ...ear month day Description The NDUE command allows you to store the date when calibration is next due in instrument memory You can read back the next due date from the in strument over the bus by using the NDUE query or the front panel CAL menu Note The next due date parameters must be delimited by commas Examples CAL PROT NDUE 1995 12 16 Send due date 12 16 95 CAL PROT NDUE Request due date Calibr...

Страница 54: ...5 NRf STEP6 NRf STEP7 NRf STEP8 NRf STEP9 NRf STEP10 NRf STEP11 NRf STEP12 NRf Front terminal short circuit Open circuit 10V DC calibration step 10V DC calibration step 100V DC calibration step 1kΩ 4 wire calibration step 10kΩ 4 wire calibration step 100kΩ 4 wire calibration step 1MΩ 4 wire calibration step 10mA DC calibration step 100mA DC calibration step 1A DC calibration step 9 to 11 9 to 11 9...

Страница 55: ...l prot dc step2 Parameter None Description STEP2 performs the open circuit calibration step in the comprehensive cal ibration procedure Disconnect all cables and accessories from the input jacks before sending this command Example CAL PROT DC STEP2 Perform open circuit calibration STEP3 CALibration PROTected DC STEP3 Purpose To program the 10V comprehensive calibration step Format cal prot dc step...

Страница 56: ...arameter Cal_voltage 90 to 110 V Description STEP5 programs the 100V DC comprehensive calibration step The allow able range of the calibration voltage parameter is from 90 to 110 but 100 is recommended for best results Example CAL PROT DC STEP5 100 Program 100V step STEP6 CALibration PROTected DC STEP6 Purpose To program the 1kΩ 4 wire comprehensive calibration step Format cal prot dc step6 Cal_re...

Страница 57: ...rameter Cal_resistance 90E3 to 110E3 Ω Description STEP8 programs the 100kΩ 4 wire resistance comprehensive calibration step The allowable range of the calibration resistance parameter is from 90E3 to 110E3 but 100E3 is recommended for best results Example CAL PROT DC STEP8 100E3 Program 100kΩ step STEP9 CALibration PROTected DC STEP9 Purpose To program the 1MΩ comprehensive calibration step Forma...

Страница 58: ...1 Cal_current Parameter Cal_current 90E 3 to 110E 3 A Description STEP11 programs the 100mA comprehensive calibration step The allow able range of the calibration current parameter is from 90E 3 to 110E 3 Use the 100E 3 value whenever possible for best results Example CAL PROT DC STEP11 0 1 Program 100mA step STEP12 CALibration PROTected DC STEP12 Purpose To program the 1A comprehensive calibratio...

Страница 59: ...0 11 12 13 10mV AC at 1kHz calibration step 100mV AC at 1kHz calibration step 100mV AC at 50kHz calibration step 1V AC at 1 kHz calibration step 1V AC at 50kHz calibration step 10V AC at 1kHz calibration step 10V AC at 50kHz calibration step 100V AC at 1kHz calibration step 100V AC at 50khz calibration step 100V AC at 1kHz calibration step 100mA AC at 1kHz calibration step 1A AC at 1kHz calibratio...

Страница 60: ... calibration step 8 100V AC at 1kHz calibration step 9 100V AC at 50khz calibration step 10 100V AC at 1kHz calibration step 11 10mA AC at 1kHz calibration step 12 1A AC at 1kHz calibration step 13 2A AC at 1kHz calibration step Description The AC STEP command programs the 13 individual AC calibration steps n represents the calibration step number The appropriate signal must be connected to the in...

Страница 61: ...he two manufacturing AC calibra tion steps n represents the calibration step number The appropriate signal must be connected to the instrument when programming each step as sum marized in the parameters listed above Examples CAL PROT AC STEP14 1 Program AC step 14 CAL PROT AC STEP15 1E3 Program AC Step 15 DC STEP0 CALibration PROTected DC STEP0 Purpose To perform rear terminal short circuit calibr...

Страница 62: ...e error message as summarized in Appendix B Status byte EAV Error Available bit Whenever an error is available in the error queue the EAV bit Error Available bit 2 of the status byte will be set Use the STB query or serial polling to obtain the status byte then test bit 2 to see if it is set If the EAV bit is set an error has occurred and you can use the SYST ERR query to read the error and at the...

Страница 63: ...tion of each calibration step To use OPC to detect the end of each calibration step you must do the follow ing 1 Enable operation complete by sending ESE 1 This command sets the OPC operation complete in the standard event enable register allowing operation complete status from the standard event status register to set the ESB event summary bit in the status byte when operation complete is detecte...

Страница 64: ...of repeatedly poll ing the Model 2000 To use this method send both ESE 1 and SRE 32 to the instrument then include the OPC command at the end of each calibration command line as covered above Re fer to your controller s documentation for information on detecting and servicing SRQs 3 20 Calibration Command Reference ...

Страница 65: ...A Specifications ...

Страница 66: ... 6 35 6 45 6 5 1 Resistance15 100 0000 Ω 100 µΩ 1 mA 30 30 80 40 100 40 8 6 1 000000 kΩ 1 mΩ 1 mA 20 6 80 10 100 10 8 1 10 00000 kΩ 10 mΩ 100 µA 20 6 80 10 100 10 8 1 100 0000 kΩ 100 mΩ 10 µA 20 6 80 10 100 10 8 1 1 000000 MΩ 16 1 Ω 10 µA 20 6 80 10 100 10 8 1 10 00000 MΩ 11 16 10 Ω 700 nA 10M Ω 150 6 200 10 400 10 70 1 100 0000 MΩ 11 16 100 Ω 700 nA 10M Ω 800 30 1500 30 1500 30 385 1 Current 10 0...

Страница 67: ... Rate Readings s Digits RMS Noise 10V Range NMRR12 CMRR13 10 PCL 5 6 1 5 µV 60 dB 140 dB 1 PCL 50 6 4 µV 60 dB 140 dB 0 1 PCL 500 5 22 µV 80 dB 0 01 PCL 2000 4 150 µV 80 dB DC Notes 1 Add the following to ppm of range uncertainty 1V and 100V 2ppm 100mV 15ppm 100Ω 15ppm 1MΩ 2ppm 10mA and 1A 10ppm 100mA 40ppm 2 Speeds are for 60 Hz operation using factory default operating conditions RST Autorange o...

Страница 68: ... 35 FAST 300 Hz 300kHz Additional Low Frequency Errors of reading SLOW MED FAST 20Hz 30Hz 0 0 3 30Hz 50Hz 0 0 50Hz 100Hz 0 0 1 0 100Hz 200Hz 0 0 0 18 200Hz 300Hz 0 0 0 10 300Hz 0 0 0 AC System Speeds2 5 FUNCTION RANGE CHANGE6 4 s AUTORANGE TIME 3 s ASCII READINGS TO RS 232 19 2k BAUD 4 50 s MAX INTERNAL TRIGGER RATE4 300 s MAX EXTERNAL TRIGGER RATE4 300 s AC General INPUT IMPEDANCE 1MΩ 2 parallele...

Страница 69: ...For temperatures 100 C add 0 1 C and 900 C add 0 3 C 2 Temperature can be displayed in C K or F 3 Accuracy based on ITS 90 4 Exclusive of thermocouple error 5 Specifications apply to channels 2 6 Add 0 06 C channel from channel 6 INTERNAL SCANNER SPEED4 MAXIMUM INTERNAL SCANNER RATES RANGE Channels s1 TRIGGER DELAY 0 DCV2 ACV2 3 2 Wire Ohms2 4 Wire Ohms2 Temperature4 All 110 All 100 All 105 10MΩ 3...

Страница 70: ...88 2 and RS 232C GENERAL POWER SUPPLY 100V 120V 220V 240V 10 LINE FREQUENCY 45Hz to 66Hz and 360Hz to 440Hz automatically sensed at power up POWER CONSUMPTION 22 VA OPERATING ENVIRONMENT Specified for 0 C to 50 C Specified to 80 R H at 35 C STORAGE ENVIRONMENT 40 C to 70 C WARRANTY 3 years EMC Complies with European Union Directive 89 336 EEC EN61326 1 SAFETY Conforms to European Union Directive 7...

Страница 71: ...rent and resistance calculations are performed in exactly the same manner using the pertinent specifications ranges and input signal values Calculating AC characteristics accuracy AC characteristics accuracy is calculated similarly except thatAC specifications are given as follows Accuracy of reading of range As an example of how to calculate the actual reading limits assume that you are measuring...

Страница 72: ... can be shown that 0 998815V has an uncertainty of 36 96445µV or 0 998778V to 0 998852V using one year specifications of the 1VDC range Expressing 0 998778V as dBm and expressing 0 998852V as dBm Thus the actual reading range is 13dBm 0 00032dBm dBm and dB for other voltage inputs can be calculated in exactly the same manner using per tinent specifcations ranges and reference impedances dBm 10 log...

Страница 73: ... 10mV 36µV or 10 036mV to 9 964mV Applying the voltage reading accuracy into the dB equation yields Thus the actual reading accuracy is 60dB 0 031213dB to 60dB 0 031326dB dBm and dB for other voltage inputs can be calculated in exactly the same manner using per tinent specifications ranges and other reference voltages Additional derating factors In some cases additional derating factors must be ap...

Страница 74: ...stance Select 6 digits 10 PLC filter ON up to 100 readings fixed range Use REL on DC voltage and 2 wire resistance measurements Use 4 wire resistance measurements for best accuracy AC voltage and AC current Select 6 digits 10 PLC filter ON up to 100 readings fixed range Temperature Select 6 digits 10 PLC filter ON up to 100 readings A 10 Specifications ...

Страница 75: ...rent and resistance Select 3 digits 0 01 PLC filter OFF fixed range AC voltage and AC current Select 3 digits 0 01 PLC filter OFF fixed range Temperature Select 3 digits 0 01 PLC filter OFF For all functions turn off the display and autozero and set the trigger delay to zero Use the SAMPle COUNt and READ bus commands Specifications A 11 ...

Страница 76: ...A 12 Specifications ...

Страница 77: ...B Error Messages ...

Страница 78: ...zero error 10k 2 w zero error 100k 2 w zero error 10M 2 w zero error 10M 2 w full scale error 10M 2 w open error 1k 4 w zero error 10k 4 w zero error 100k 4 w zero error 10M 4 w sense lo zero error 1k 4 w full scale error 10k 4 w full scale error 100k 4 w full scale error 1M 4 w full scale error 10M 4 w full scale error 10m adc zero error 100m adc zero error 10m adc full scale error 100m adc full ...

Страница 79: ... scale error 466 750 vac noise error 467 Post filter offset error 468 1 aac zero error 469 1 aac full scale error 470 3 aac zero error 471 3 aac full scale error 472 Input time constant error 473 Frequency gain error 500 513 514 515 Calibration data invalid AC calibration data lost DC calibration data lost Calibration dates lost 610 Questionable Calibration Table B 1 Error summary Error number Des...

Страница 80: ...C Calibration Program ...

Страница 81: ...EE 488 interface for the computer Two shielded IEEE 488 connecting cables Keithley Model 7007 Software requirements In order to use the calibration program you will need the following software Microsoft QBasic supplied with MS DOS 5 0 or later MS DOS version 5 0 or later HP style Universal Language Driver CECHP EXE supplied with Keithley and CEC in terface cards listed above Calibration equipment ...

Страница 82: ...ration Program C 1 Model 2000 calibration program Model 2000 calibration program for use with the Fluke 5700A calibrator Rev 1 0 10 18 94 OPEN IEEE FOR OUTPUT AS 1 Open IEEE 488 output path OPEN IEEE FOR INPUT AS 2 Open IEEE 488 input path PRINT 1 INTERM CRLF Set input terminator PRINT 1 OUTTERM LF Set output terminator PRINT 1 REMOTE 4 16 Put 2000 5700A in remote PRINT 1 CLEAR Send DCL PRINT 1 OU...

Страница 83: ...TPUT 16 CAL PROT NDUE D GOSUB ErrCheck PRINT 1 OUTPUT 16 CAL PROT SAVE Save calibration constants GOSUB ErrCheck PRINT 1 OUTPUT 16 CAL PROT LOCK Lock out calibration PRINT Calibration completed PRINT 1 OUTPUT 16 SYST PRES END KeyCheck Check for key press routine WHILE INKEY WEND Flush keyboard buffer PRINT PRINT Press any key to continue ESC to abort program DO I INKEY LOOP WHILE I IF I CHR 27 THE...

Страница 84: ...EP4 10 DATA OUT 100 V DC STEP5 100 DATA OUT 1 KOHM DC STEP6 DATA OUT 10 KOHM DC STEP7 DATA OUT 100 KOHM DC STEP8 DATA OUT 1 MOHM DC STEP9 DATA OUT 10 MA DC STEP10 10E 3 DATA OUT 100 MA DC STEP11 100E 3 DATA OUT 1A DC STEP12 1 DATA OUT 10 MV 1 KHZ AC STEP1 DATA OUT 100 MV 1 KHZ AC STEP2 DATA OUT 100 MV 50 KHZ AC STEP3 DATA OUT 1 V 1 KHZ AC STEP4 DATA OUT 1 V 50 KHZ AC STEP5 DATA OUT 10 V 1 KHZ AC S...

Страница 85: ...n commands 3 10 DC current calibration 2 11 2 17 DC voltage calibration 2 9 2 15 Detecting calibration errors 3 18 Detecting calibration step completion 3 19 E Environmental conditions 1 3 2 3 Error Messages B 1 Error queue 3 19 Example reading limit calculation 1 5 F Front panel calibration 2 7 2 21 Front panel calibration code 2 5 Front panel short and open calibration 2 8 2 15 G General program...

Страница 86: ...AV Error Available bit 3 19 T Test considerations 1 6 U Unlocking manufacturing calibration 2 20 Using the OPC command 3 20 Using the OPC query 3 20 V Verification limits 1 5 Verification test requirements 1 3 Verifying AC current 1 11 Verifying AC voltage 1 8 Verifying DC current 1 10 Verifying DC voltage 1 7 Verifying resistance 1 12 W Warm up period 1 3 2 3 ...

Страница 87: ... to zero Unstable Overload Will not read applied input Calibration only Certificate of calibration required Data required attach any additional sheets as necessary Show a block diagram of your measurement including all instruments connected whether power is turned on or not Also describe signal source Where is the measurement being performed factory controlled laboratory out of doors etc _________...

Страница 88: ...H Landsberger Strasse 65 D 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 GREAT BRITAIN Keithley Instruments Ltd The Minster 58 Portman Road Reading Berkshire RG30 1EA 0118 9 57 56 66 Fax 0118 9 59 64 69 INDIA Keithley Instruments GmbH Flat 2B WILLOCRISSA 14 Rest House Crescent Bangalore 560 001 91 80 509 1320 21 Fax 91 80 509 1322 ITALY Keithley Instruments s r l Viale San Gimignano 38 20146...

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