Keithley 2001 Calibration Manual
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Keithley 2001 Calibration Manual

Keithley 2001 Calibration Manual

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Model 2001
Multimeter
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

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Summary of Contents for Keithley 2001

  • Page 1 Model 2001 Multimeter 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...
  • Page 2 Model 2001 Multimeter Calibration Manual ©1992, Keithley Instruments, Inc. All rights reserved. Cleveland, Ohio, U.S.A. Seventh Printing May 2004 Document Number: 2001-905-01 Rev. G...
  • Page 3 WARRANTY Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 3 years from date of shipment. Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries, diskettes, and documentation.
  • Page 4 Revision F (Document Number 2001-905-01) ................November 2003 Revision G (Document Number 2001-905-01) ..................May 2004 All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc. Other brand and product names are trademarks or registered trademarks of their respective holders.

  • Page 5: Safety Precautions

    Keithley products are designed for use with electrical signals that The instrument and accessories must be used in accordance with its are rated Measurement Category I and Measurement Category II, as...
  • Page 6 Keithley Instru- symbol on an instrument indicates that the user should re- ments. Standard fuses, with applicable national safety approvals, fer to the operating instructions located in the manual.

  • Page 7: Table Of Contents

    Table of Contents Performance Verification Introduction ................................1-1 Environmental conditions ............................ 1-1 Warm-up period ..............................1-1 Line power ................................1-1 Recommended test equipment ..........................1-2 Verification limits ..............................1-2 Restoring default conditions ..........................1-2 Verification procedures............................1-4 1.8.1 DC volts verification ............................ 1-4 1.8.2 AC volts verification ............................
  • Page 8 Calibration error summary .........................3-13 3.5.2 Detecting calibration errors ........................3-13 Detecting calibration step completion ........................3-13 3.6.1 Using the *OPC? query ..........................3-13 3.6.2 Using the *OPC command .........................3-14 Appendices Model 2001 Specifications ..........................A-1 Calibration Programs............................B-1 Calibration Messages............................C-1 Alternate Calibration Sources ..........................D-1...
  • Page 9 List of Illustrations Performance Verification Figure 1-1 Connections for DC volts verification ...................... 1-5 Figure 1-2 Connections for AC volts verification (all except 2MHz test)..............1-6 Figure 1-3 Connections for AC volts verification (2MHz frequency only) ............... 1-7 Figure 1-4 Connections for DC current verification....................
  • Page 10 List of Tables Performance Verification Table 1-1 Recommended equipment for performance verification................1-2 Table 1-2 Limits for DC volts verification ........................ 1-5 Table 1-3 Limits for normal mode AC voltage verification..................1-8 Table 1-4 Limits for low-frequency mode AC voltage verification................1-9 Table 1-5 Limits for AC peak voltage verification ....................
  • Page 11 Appendices Table B-1 Recommended equipment for comprehensive calibration ............... B-2 Table B-2 Recommended equipment for low-level calibration................. B-2 Table C-1 Calibration errors ............................C-2 Table D-1 Alternate calibration sources ........................D-1...

  • Page 12: Performance Verification

    Warm-up period This section includes the following: The Model 2001 must be allowed to warm up for at least one Environmental conditions: Covers the temperature hour before performing the verification procedures. If the in- and humidity limits for verification.

  • Page 13: Line Power

    Performance Verification Line power Restoring default conditions The Model 2001 should be tested while operating from a line Before performing each performance verification procedure, voltage in the range of 90-134V or 180-250V at a frequency restore instrument bench default conditions as follows: of 50, 60, or 400Hz.
  • Page 14 5700A-03 Wideband AC option 190mV, 1.9V @ 2MHz, ±0.1% Fluke 5440A-7002 Low thermal cable set Keithley CA-18-1 Low capacitance cable Low capacitance dual banana to dual banana shielded cable (for ACV), 1.2m (4 ft.) in length. Keithley R-289-1G 1G¾ resistor NOTE: Resistor should be characterized to within ±10,000 ppm and...

  • Page 15: Verification Procedures

    Performance Verification 1. Turn on the Model 2001 and the calibrator, and allow a Verification procedures one-hour warm-up period before making measure- The following paragraphs contain procedures for verifying ments. instrument accuracy specifications for the following measur- ing functions: NOTE Use shielded, low-thermal connections •...

  • Page 16: Ac Volts Verification

    2001 surements. Applied DC Reading limits 2. Connect the Model 2001 to the calibrator, as shown in range voltage (18° to 28°C, 1 year) Figure 1-2. Be sure to connect the amplifier HI to Model 200mV 190.0000mV...
  • Page 17 6. Set the calibrator output to 190.000mVAC at a frequen- 2. Connect the Model 2001 to the calibrator, as shown in cy of 10Hz, and allow the reading to settle. Figure 1-2. Be sure to connect the amplifier HI to Model 7.
  • Page 18 Performance Verification 5725 Amplifier (Connect to calibrator) BNC to dual banana 50Ω terminator Model 2001 50Ω Coax SENSE INPUT Ω 4 WIRE 1. 900000 VAC RMS 350V 1100V PEAK PEAK 2001 MULTIMETER 500V INPUTS PEAK Ω2 Ω4 PREV FREQ TEMP...
  • Page 19 Performance Verification...
  • Page 20 F. Press EXIT as necessary to return to normal display. 2. Connect the Model 2001 to the calibrator, as shown in G. If the FLT annunciator is off, press FILTER to en- Figure 1-2. Be sure to connect the amplifier HI to Model able the filter.

  • Page 21: Dc Current Verification

    1053V 1067V 1068V *Calibrator voltage is given as an RMS value. Model 2001 reading limits are peak AC values. **CAUTION: Do not apply more than 2 × 10 V•Hz †Use AC+DC input coupling for 20Hz tests only. (Use CONFIG-ACV to set coupling.) NOTE: Limits shown do not include uncertainty calibrator.

  • Page 22: Ac Current Verification

    AMPS input, or the current protection 200µA 190.0000µA 189.9000µA fuse will blow. 190.1000µA 1. Turn on the Model 2001 and the calibrator, and allow a 1.900000mA 1.899200mA one-hour warm-up period before making measure- ments. 1.900800mA 2. Connect the Model 2001 to the calibrator, as shown in 20mA 19.00000mA...
  • Page 23 Performance Verification 5700A Calibrator (Output AC Current) Model 2001 Input SENSE INPUT Ω 4 WIRE Output HI 190.0000 μAAC RMS 350V 1100V PEAK PEAK 2001 MULTIMETER 500V INPUTS PEAK Ω2 Ω4 PREV FREQ TEMP RANGE DISPLAY NEXT AUTO FRONT/REAR TRIG...

  • Page 24: Resistance Verification

    2001 ¾ range resistance (1 year, 18° to 28°C) 20¾ - 200k¾ range verification 20¾ 19.0000¾ 18.99849¾ 1. Turn on the Model 2001 and the calibrator, and allow a one-hour warm-up period before making measure- 19.00151¾ ments. 200¾ 190.000¾ 189.9880¾...
  • Page 25 (see Table 1-1). Record the characterized value where indicated in Table 1. Connect the DC calibrator and Model 2001 using the 2- 1-9. Also, compute the limits based on the value of R us- wire connections shown in Figure 1-7.
  • Page 26 Performance Verification Sense LO 5700A Calibrator (Output 4-wire Resistance) Sense HI Sense HI Model 2001 SENSE INPUT Ω 4 WIRE Input HI 190.0000 kΩ 350V 1100V PEAK PEAK Output HI 2001 MULTIMETER 500V INPUTS PEAK PREV Ω2 Ω4 FREQ TEMP...

  • Page 27: Frequency Accuracy Verification

    4. Restore Model 2001 factory defaults, as explained in 1kHz 0.9997kHz to 1.0003kHz paragraph 1.7. 10kHz 9.997kHz to 10.003kHz 5. Press FREQ to place the Model 2001 in the frequency 100kHz 99.97kHz to 100.03kHz measurement mode. 1MHz 0.9997MHz to 1.0003MHz 10MHz 9.997MHz to 10.003MHz...

  • Page 28: Temperature Reading Checks

    989.4 to 990.6 7. Press EXIT as necessary to return to normal display. 0.054mV 7 to 13 8. Press the TEMP key to place the Model 2001 in the tem- 0.647mV 97 to 103 perature display mode. Refer to further information be- 4.471mV...
  • Page 29 RTD probe temperature reading checks ulate probe resistances at various temperatures (Table 1-12). Be sure to use 4-wire connections between the decade resis- RTD probe Applied Displayed tance box and the Model 2001. type resistance temperature (°C) PT385 64.30¾ -90.08 to -89.92 (∝=0.00385055)

  • Page 30: Calibration

    23°± 1°C, and at a relative humidity of less than 80% unless otherwise noted. Warm-up period: Discusses the length of time the Model 2001 should be allowed to warm up before cal- ibration. Line power: States the power line voltage limits when...

  • Page 31: Warm-Up Period

    2.5.2 Low-level calibration lock To unlock low-level calibration, press in and hold the CAL The Model 2001 must be allowed to warm up for at least one switch while turning on the power. Low-level calibration can hour before calibration. If the instrument has been subjected then be performed.
  • Page 32 Download cal constants from 2001. :DATE “<string>” Send cal date to 2001. :DATE? Request cal date from 2001. :NDUE “<string>” Send next due cal date to 2001. :NDUE? Request next due cal date from 2001. :LLEVel Low-level calibration subsystem. :SWITch? Request low-level CAL switch state.

  • Page 33: Required Order Of Command Execution

    1. With the power off, connect the Model 2001 to the the low-level commands. IEEE-488 interface of the computer. 3. There are a total of 15 low-level calibration steps, all of 2. Turn on the computer and the Model 2001. Press in on which must executed before the CAL switch to unlock calibration.

  • Page 34: Calibration Errors

    (see paragraph 2.8.3), then press <Enter>. Table 2-2 Calibration error messages Calibration errors Error ID The Model 2001 checks for errors when calibration con- code Error message stants are calculated, minimizing the possibility that improp- er calibration may occur due to operator error. The following -222 Parameter data out of range.

  • Page 35: Ieee-488 Bus Error Reporting

    2.8.2 Front panel comprehensive calibration Comprehensive calibration Follow the steps below to calibrate the Model 2001 from the front panel. Refer to paragraph 2.8.3 below for the procedure The comprehensive calibration procedure calibrates DCV, to calibrate the unit over the IEEE-488 bus. Table 2-4 sum- DCI (except for the 2A range), ¾2, and ¾4 functions.
  • Page 36 Calibration Procedure Model 2001 Step 1: Prepare the Model 2001 for calibration SENSE INPUT Ω 4 WIRE 1. Turn on the power, and allow the Model 2001 to warm 350V Model 8610 1100V PEAK PEAK Low-thermal up for at least one hour before performing calibration.
  • Page 37 Connections for comprehensive calibration Performing 2 VDC Calibration 4. Using the cursor and range keys, set the resistance value displayed by the Model 2001 to the exact resistance val- ue displayed by the calibrator. (The allowable range is Step 4: +20V DC calibration from 9k¾...

  • Page 38: Ieee-488 Bus Comprehensive Calibration

    Keithley Model 7007. 2. Use the cursor and range keys to enter the current date 2. Turn on the power, and allow the Model 2001 to warm as the calibration date, then press ENTER. Press EN- up for at least one hour before performing calibration.
  • Page 39 For best results, use the calibration values 1. Disconnect the low-thermal short, and connect the DC given in this procedure whenever possible. calibrator to the INPUT jacks, as shown in Figure 2-2. 4. Wait until the Model 2001 finishes this step before going 2-10...
  • Page 40 Step 8: Calculate DC calibration constants 21V if you are using a different voltage.) To program the Model 2001 to calculate new DC calibration 3. Wait until the Model 2001 finishes this step before going constants, send the following command over the bus: :CAL:PROT:DC:CALC Step 5: 20k¾...

  • Page 41: Ac Self-Calibration

    1. Disconnect all test leads or cables from the INPUT and Low-level calibration is required in the SENSE jacks. field only if the Model 2001 has been re- 2. Press MENU. The instrument will display the follow- paired, or if the other calibration proce-...

  • Page 42: Recommended Equipment For Low-Level Calibration

    200V @ 1kHz: ±85ppm 200V @ 30kHz: ±240ppm AC current: 20mA @ 1kHz: ±160ppm Resistance: 19k¾: ±11ppm 1M¾: ±18ppm Keithley 3930A Synthesizer 2V rms @ 1Hz Keithley 8610 Low-thermal shorting plug * 90-day calibrator specifications shown include total uncertainty at specified output. The ±2V outputs include 0.5ppm transfer uncertainty.
  • Page 43 Calibration Table 2-7 Low-level calibration summary Calibration signal Calibration command Comments Low-thermal short :CAL:PROT:DC:ZERO Comprehensive cal zero. +2V DC :CAL:PROT:DC:LOW <value> Comprehensive cal 2V. +20V DC :CAL:PROT:DC:HIGH <value> Comprehensive cal 20V. 20k¾ :CAL:PROT:DC:LOHM <value> Comprehensive cal 20k¾. 1M¾ :CAL:PROT:DC:HOHM <value> Comprehensive cal 1M¾.

  • Page 44: Front Panel Low-Level Calibration Procedure

    (At this point, you can use the cursor and range keys to set the calibration voltage to a value from 9.8 to 21V if 4. Allow the Model 2001 to warm up for at least one hour your calibrator cannot output 20V).
  • Page 45 AC CAL COMPLETE Low-Level Cal - Step 3 of 15 33. Press ENTER. The instrument will display the follow- 41. When finished with this step, the Model 2001 will dis- ing to indicate the start of the low-level calibration play:...
  • Page 46 1kHz, then press ENTER. The Model 2001 will then Low-Level Cal - Step 10 of 15 display the following: 55. The Model 2001 will then prompt for the next calibra- Low-Level Cal - Step 6 of 15 tion signal: 47.

  • Page 47: Ieee-488 Bus Low-Level Calibration Procedure

    ENTER. Press ENTER a second time to con- nal: firm your date selection. 71. The Model 2001 will then prompt you to enter the cali- Connect +2 ADC bration due date: 63. Program the calibrator to output +2A DC, then press the NEXT CAL: 01/01/92 ENTER key.
  • Page 48 MANUFACTURING CAL Here, <value> is the actual calibrator resistance value. For example, if the calibrator resistance is 18.9987k¾, 5. Allow the Model 2001 to warm up for at least one hour the command would appear as follows: before performing calibration.
  • Page 49 Figure 2-4. 31. Program the calibrator to output 20mA AC at a frequen- 18. Connect the Model 2001 to the calibrator using 2-wire cy of 1kHz. Send the following command to the Model connections, as shown in Figure 2-3.
  • Page 50 Calibration 39. Update the calibration date and calibration due date by 40. Save calibration constants in EEPROM by sending the sending the following commands: following command: :CAL:PROT:DATE ‘1/01/92’ :CAL:PROT:SAVE :CAL:PROT:NDUE ‘1/01/93’ 41. Finally, lock out calibration by sending the following command: :CAL:PROT:LOCK 2-21...

  • Page 51: Calibration Command Reference

    :ACC command, which is used to perform AC user cal- This section contains detailed information on the various ibration over the bus. Model 2001 IEEE-488 bus calibration commands. Section 2 3.5 Bus error reporting: Summarizes bus calibration er- of this manual covers detailed calibration procedures, and rors, and discusses how to obtain error information.
  • Page 52 3.3.4 :DATE “<string>” Send cal date to 2001. 3.3.5 :DATE? Request cal date from 2001. 3.3.6 :NDUE “<string>” Send next due cal date to 2001. 3.3.7 :NDUE? Request next due cal date from 2001. 3.3.8 :LLEVel Low-level calibration subsystem. 3.3.9 :SWITch? Request low-level CAL switch state.

  • Page 53: Calibration:protected Subsystem

    0 Comprehensive calibration locked. Response 1 Comprehensive calibration unlocked. The :SWITch? query requests status from the Model 2001 on calibration locked/unlocked Description state. Calibration must be unlocked by pressing in on the CAL switch while power is turned on before calibration can be performed.

  • Page 54: Save

    OUTPUT 716; “:CAL:PROT:SAVE” ! Save constants. Programming example 3.3.4 :DATA? (:CALibration:PROTected):DATA? To download calibration constants from the Model 2001 Purpose :cal:prot:data? Format <Cal 1>,<Cal 2>,...<Cal n> Response :DATA? allows you to request the present calibration constants stored in EEPROM from the Description instrument.

  • Page 55: Date

    Calibration Command Reference :DATE 3.3.5 (:CALibration:PROTected):DATE To send the calibration date to the instrument. Purpose :cal:prot:date “<string>”? Format <string> = date (mm/dd/yy) Parameters The :DATE command allows you to store the calibration date in instrument memory for fu- Description ture reference. You can read back the date from the instrument over the bus by using the :DATE? query, or by using the CALIBRATION selection in the front panel menu.

  • Page 56: Ndue

    Calibration Command Reference :NDUE? 3.3.8 (:CALibration:PROTected):NDUE? To request the calibration due date from the instrument. Purpose :cal:prot:ndue? Format <date> (mm/dd/yy) Response The :NDUE? query allows you to request from the instrument the previously stored cali- Description bration due date. The instrument response is a string of ASCII characters representing the last stored due date.
  • Page 57 Calibration Command Reference :SWITch? (CALibration:PROTected:LLEVel):SWITch? To request the state of the low-level calibration lock. Purpose :cal:prot:llev:swit? Format 0 Low-level calibration locked. Response 1 Low-level calibration unlocked. :SWITch? query requests the status of the low-level calibration lock from the instrument. Description This :SWITch? query should not be confused with the :SWITch query that requests the sta- tus of the comprehensive calibration lock (see paragraph 3.3.1).
  • Page 58 Format None Parameters The :CALCulate command causes the Model 2001 to calculate new low-level calibration Description constants based on parameters determined during the calibration procedure. This command should be sent after completing all low-level calibration steps, but before saving calibration constants in EEPROM with the :SAVE command.
  • Page 59 Calibration Command Reference 3.3.10 (CALibration:PROTected):DC The :DC commands perform comprehensive (user) calibration. Table 3-3 summarizes these comprehensive calibration commands. Table 3-3 Comprehensive calibration commands Command Description :CALibration :PROTected User calibration subsystem. :ZERO Low-thermal short calibration step. :LOW <value> +2V DC calibration step. :HIGH <value>...
  • Page 60 Calibration Command Reference :HIGH (:CALibration:PROTected:DC):HIGH To program the +20V DC comprehensive calibration step. Purpose :cal:prot:dc:high <cal_voltage> Format <Cal_voltage> = 10 to 20 [V] Parameters :HIGH programs the +20V DC comprehensive calibration step. The allowable range of the Description calibration voltage parameter is from 10 to 20V, but 20V is recommended for best results. OUTPUT 716;...
  • Page 61 Calibration Command Reference :CALCulate (:CALibration:PROTected:DC):CALCulate To program the Model 2001 to calculate new comprehensive calibration DC constants. Purpose :cal:prot:dc:calc Format None Parameters The :CALCulate command should be sent to the instrument after performing all other DC Description calibration steps to calculate new comprehensive calibration constants. All other compre- hensive calibration steps must be completed before sending this command.

  • Page 62: Calibration:unprotected Subsystem

    Calibration Command Reference :CALibration:UNPRotected Subsystem :ACCompensation 3.3.11 (:CALibration:UNPRotected):ACCompensation To perform user AC calibration. Purpose :cal:unpr:acc Format None Parameters The :ACC command performs user AC calibration, which requires no calibration equip- Description ment. All test leads must be disconnected from the input jacks when performing user AC calibration.

  • Page 63: Bus Error Reporting

    *OPC command to detect when each calibration Error Queue step is completed.) As with other Model 2001 errors, any calibration errors will be reported in the bus error queue. You can read this queue 3.6.1 Using the *OPC? query by using the :SYST:ERR? query.

  • Page 64: Using The *Opc Command

    Calibration Command Reference 3. After reading the output queue, repeatedly test MAV 2. Send the *OPC command immediately following each again until it clears. At this point, the calibration step is calibration command. For example: completed. :CAL:PROT:DC:ZERO;*OPC Note that you must include the semicolon (;) to separate the two commands.

  • Page 65: Model 2001 Specifications

    Model 2001 Specifications...
  • Page 66 20V calibrator will reduce For ±2°C of last AC self cal. calibration uncertainty, and can thereby improve total 2001 accuracy for measurements up to 50% of range. Refer to the 2001 calibration procedure for details. TYPICAL ACCURACIES Accuracy can be specified as typical or warranted.
  • Page 67 DC VOLTS DCV INPUT CHARACTERISTICS AND ACCURACY DEFAULT ACCURACY TEMPERATURE COEFFICIENT ± (ppm of reading + ppm of range) ± (ppm of reading + ppm of range)/°C FULL RESO- RESO- INPUT ± 5°C RANGE SCALE LUTION LUTION RESISTANCE 5 Minutes 24 Hours 90 Days 1 Year...
  • Page 68 DCV PEAK SPIKES MEASUREMENT 90 Days, ± 2°C from last AC self-cal ± (% of reading+% of range) REPETITIVE SPIKES ACCURACY TEMPERATURE COEFFICIENT 750kHz– ± (% of reading+% of range)/°C 1kHz– 10kHz– 30kHz– 50kHz– 100kHz– 300kHz– 500kHz– ± 2°C RANGE 0–1kHz 10kHz 30kHz...
  • Page 69 AC VOLTS (cont’d) NORMAL MODE RMS 90 Days, ± 2°C from last AC self-cal for 1% to 100% of range ± (% of reading + % of range) RANGE 20–50Hz 50–100Hz 0.1–2kHz 2–10kHz 10–30kHz 30–50kHz 50–100kHz 100–200kHz 0.2–1MHz 1–2MHz 200 mV 0.25+0.015 0.07+0.015 0.03+0.015...
  • Page 70 AC VOLTS (cont’d) SETTLING CHARACTERISTICS: COMMON MODE REJECTION: For 1kΩ imbalance in either lead: >60dB for line frequency ±0.1%. Normal Mode (rms, avg.) <300ms to 1% of step change MAXIMUM VOLT•Hz PRODUCT: 2 × 10 <450ms to 0.1% of step change V•Hz (for inputs above 20V).
  • Page 71 OHMS (cont’d) 2-WIRE RESISTANCE READING RATES 20Ω, 200Ω, 2kΩ, and 20kΩ Ranges 10,12 READINGS/SECOND WITH MEASUREMENT DEFAULT READINGS/SECOND TO MEMORY READINGS/SECOND TO IEEE-488 TIME STAMP TO IEEE-488 NPLC APERTURE BITS DIGITS Auto Zero Off Auto Zero On Auto Zero Off Auto Zero On Auto Zero Off Auto Zero On 167 ms (200 ms)
  • Page 72 The DC in-circuit current measurement function allows a user to measure the MEASUREMENT RANGE CHART current through a wire or a circuit board trace without breaking the circuit. When the In-Circuit Current Measurement function is selected, the 2001 will first perform a 4-wire resistance measurement, then a voltage measurement, 10Ω...

  • Page 73: Frequency Counter

    AC AMPS (cont’d) ACI READING RATES READINGS/SECOND WITH MEASUREMENT DEFAULT READINGS/SECOND TO MEMORY READINGS/SECOND TO IEEE-488 TIME STAMP TO IEEE-488 NPLC APERTURE BITS DIGITS Auto Zero Off Auto Zero On Auto Zero Off Auto Zero On Auto Zero Off Auto Zero On 167 ms (200 ms) ⁄...
  • Page 74 OPERATING SPEED The following diagram illustrates the factors that determine a DMM’s reading rate. COMMAND RECEIVE AND INTERPRET SPEED GPIB FASTEST TYPICAL SLOWEST Command Time per character 0.16 ms 0.28 ms 0.66 ms Characters per second 6250 3751 1515 Command Command Receive and Receive and Stored...
  • Page 75 OPERATING SPEED (cont’d) RANGE CHANGE SPEED AUTO ZERO OFF AUTO ZERO ON RATE RATE FUNCTION From TIME (per second) TIME (per second) 200mV, 2V 4.5 ms 3.1 ms 200V, 1000V 8.0 ms 8.6 ms 200mV, 2V, 20V 200mV, 2V, 20V 4.5 ms 200V, 1000V 200mV, 2V...
  • Page 76 EXTENDED MEMORY / NON-VOLATILE MEMORY OPTIONS DATA STORAGE SIZE ⁄ -Digit SETUP STORAGE MODEL (Bytes) ⁄ -Digit w/Time Stamp Type Number Type 2001 volatile non-volatile 2001/MEM1 7,000 1,400 non-volatile non-volatile 2001/MEM2 128k 30,000 6,000 non-volatile non-volatile Specifications subject to change without notice.

  • Page 77: Calibration Programs

    Turbo C program requirements This appendix includes programs written in QuickBASIC In order to use the Turbo C programs, you will need the fol- and Turbo C to aid you in calibrating the Model 2001. Pro- lowing: grams include: • IBM PC, AT, or compatible computer.
  • Page 78 DC voltage: 2V: ±5ppm 20V: ±5ppm Resistance: 19k¾: ±11ppm 1M¾: ±18ppm Keithley 8610 Low-thermal Shorting Plug * 90-day calibrator specifications shown include total uncertainty at specified output. The 2V output includes 0.5ppm transfer uncertainty. Table B-1 Recommended equipment for low-level calibration Mfg.

  • Page 79: General Program Instructions

    2. Turn on the computer, the Model 2001, and the calibra- Figure B-1 shows low-thermal short connections, while Fig- tor. Allow the Model 2001 to warm up for at least one ure B-2 shows calibrator connections. hour before performing calibration.
  • Page 80 Calibration Programs Sense LO 5700A Calibrator Sense HI Sense HI Model 2001 SENSE Input HI Ω 4 WIRE INPUT 350V 1100V PEAK PEAK Output HI 2001 MULTIMETER 500V INPUTS PEAK Ω2 Ω4 PREV FREQ TEMP RANGE DISPLAY NEXT AUTO FRONT/REAR...
  • Page 81 Calibration Programs 5700A Calibrator Model 2001 Input SENSE INPUT Ω 4 WIRE Output HI 350V 1100V PEAK PEAK 2001 MULTIMETER 500V INPUTS PEAK PREV Ω2 Ω4 FREQ TEMP RANGE DISPLAY NEXT AUTO FRONT/REAR TRIG STORE RECALL FILTER MATH 2A 250V...
  • Page 82 Calibration Programs Program B-1 Comprehensive calibration program for use with any suitable calibrator (QuickBASIC Version).
  • Page 83 Calibration Programs Program B-1 (continued) Comprehensive calibration program for use with any suitable calibrator (QuickBASIC Version).
  • Page 84 Calibration Programs Program B-2 Comprehensive calibration program for use with any suitable calibrator (Turbo C Version).
  • Page 85 Calibration Programs Program B-2 (continued) Comprehensive calibration program for use with any suitable calibrator (Turbo C Version).
  • Page 86 Calibration Programs Program B-2 (continued) Comprehensive calibration program for use with any suitable calibrator (Turbo C Version). B-10...
  • Page 87 Calibration Programs Program B-3 Comprehensive calibration program for use with Fluke 5700A calibrator (QuickBASIC Version). B-11...
  • Page 88 Calibration Programs Program B-3 (continued) Comprehensive calibration program for use with Fluke 5700A calibrator (QuickBASIC Version). B-12...
  • Page 89 Calibration Programs Program B-3 (continued) Comprehensive calibration program for use with Fluke 5700A calibrator (QuickBASIC Version). B-13...
  • Page 90 Calibration Programs Program B-4 Comprehensive calibration program for use with Fluke 5700A calibrator (Turbo C Version). B-14...
  • Page 91 Calibration Programs Program B-4 (continued) Comprehensive calibration program for use with Fluke 5700A calibrator (Turbo C Version). B-15...
  • Page 92 Calibration Programs Program B-4 (continued) Comprehensive calibration program for use with Fluke 5700A calibrator (Turbo C Version). B-16...
  • Page 93 Calibration Programs Program B-5 Low-level calibration program for use with Fluke 5700A calibrator (QuickBASIC Version). B-17...
  • Page 94 Calibration Programs Program B-5 (continued) Low-level calibration program for use with Fluke 5700A calibrator (QuickBASIC Version). B-18...
  • Page 95 Calibration Programs Program B-5 (continued) Low-level calibration program for use with Fluke 5700A calibrator (QuickBASIC Version). B-19...
  • Page 96 Calibration Programs Program B-5 (continued) Low-level calibration program for use with Fluke 5700A calibrator (QuickBASIC Version). B-20...
  • Page 97 Calibration Programs Program B-6 Low-level calibration program for use with Fluke 5700A calibrator (Turbo C Version). B-21...
  • Page 98 Calibration Programs Program B-6 (continued) Low-level calibration program for use with Fluke 5700A calibrator (Turbo C Version). B-22...
  • Page 99 Calibration Programs Program B-6 (continued) Low-level calibration program for use with Fluke 5700A calibrator (Turbo C Version). B-23...
  • Page 100 Calibration Programs Program B-6 (continued) Low-level calibration program for use with Fluke 5700A calibrator (Turbo C Version). B-24...

  • Page 101: Calibration Messages

    Constants listed in Table C-2 are shown in the order they are sent. Error summary Table C-1 summarizes Model 2001 calibration errors. The error string returned over the bus by the :SYST:ERR? query include the error ID code and message separated by a comma and the message surrounded by quotes.
  • Page 102 Calibration Messages Table C-1 Table C-1 (continued) Calibration errors Calibration errors Error ID code Error messages Error ID code Error messages No Error +394 200 ohm 4w offset out of spec -102 Syntax error +395 2 kohm 4w gain out of spec -113 +396 Command header error...
  • Page 103 Calibration Messages Table C-2 Calibration constants returned by :CAL:PROT:DATA? Query Constant Description RMS gain for 2V, 200V, and 750V AC ranges RMS offset for 2V, 200V, and 750V AC ranges RMS gain for 200mV and 20V AC ranges of10 RMS offset for 200mV and 20V AC ranges gfwr1 Average gain for 2V, 200V, and 750V AC ranges offwr1...
  • Page 104 Calibration Messages Table C-2 (continued) Calibration constants returned by :CAL:PROT:DATA? Query Constant Description ohm2[20]gain 2-wire 20¾ gain ohm2[20]offset 2-wire 20¾ offset ohm2[200]gain 2-wire 200¾ gain ohm2[200]offset 2-wire 200¾ offset ohm2[2k]gain 2-wire 2k¾ gain ohm2[2k]offset 2-wire 2k¾ offset ohm2[20k]gain 2-wire 20k¾ gain ohm2[20k]offset 2-wire 20k¾...

  • Page 105: Alternate Calibration Sources

    Alternate Calibration Sources mended Model 5700A. Note, however, that the alternate Introduction equipment may not be as precise for certain calibration val- As stated in Sections 1 and 2, the Fluke 5700A Calibrator is ues. Refer to the manufacturers’ specifications for more de- the calibration source recommended for both performance tailed information.
  • Page 106 Service Form Model No. Serial No. Date Name and Telephone No. Company List all control settings, describe problem and check boxes that apply to problem. Intermittent Analog output follows display Particular range or function bad; specify IEEE failure Obvious problem on power-up Batteries and fuses are OK Front panel operational All ranges or functions are bad...
  • Page 107 Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments, Inc. All other trademarks and trade names are the property of their respective companies. Keithley Instruments, Inc. 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 1-888-KEITHLEY (534-8453) •...

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