Tektronix KEITHLEY 2100 Calibration Manual

Tektronix KEITHLEY 2100 Calibration Manual

6 1/2-digit resolution digital multimeter

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www.tek.com/keithley
Model 2100
6 1/2-Digit Resolution Digital Multimeter
Calibration Manual
2100-905-01 Rev. B April 2020
*P2100-905-01B*
2100-905-01B

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  • Page 1 www.tek.com/keithley Model 2100 6 1/2-Digit Resolution Digital Multimeter Calibration Manual 2100-905-01 Rev. B April 2020 *P2100-905-01B* 2100-905-01B...
  • Page 2 Model 2100 6½-Digit Resolution Digital Multimeter Calibration Manual © 2020, Keithley Instruments, LLC Cleveland, Ohio, U.S.A. All rights reserved. Any unauthorized reproduction, photocopy, or use of the information herein, in whole or in part, without the prior written approval of Keithley Instruments, LLC, is strictly prohibited. These are the original instructions in English.
  • Page 3 Safety precautions The following safety precautions should be observed before using this product and any associated instrumentation. Although some instruments and accessories would normally be used with nonhazardous voltages, there are situations where hazardous conditions may be present. This product is intended for use by personnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury.
  • Page 4 For safety, instruments and accessories must be used in accordance with the operating instructions. If the instruments or accessories are used in a manner not specified in the operating instructions, the protection provided by the equipment may be impaired. Do not exceed the maximum signal levels of the instruments and accessories. Maximum signal levels are defined in the specifications and operating information and shown on the instrument panels, test fixture panels, and switching cards.
  • Page 5: Table Of Contents

    Table of contents Introduction ........................ 1-1 Contact information ......................1-1 Introduction .......................... 1-1 Control software ........................1-2 Environmental conditions ..................... 1-3 Calibration considerations ....................1-3 Recommended test equipment .................... 1-4 Firmware revision ......................... 1-4 Calibration code ........................1-5 Zero calibration front panel ..................2-1 Front-panel calibration ......................
  • Page 6: Introduction

    If you have any questions after you review the information in this documentation, please contact your local Keithley Instruments office, sales partner, or distributor. You can also call the Tektronix corporate headquarters (toll-free inside the U.S. and Canada only) at 1-800-833-9200. For worldwide contact numbers, visit tek.com/contact-us.
  • Page 7: Control Software

    Section 1: Introduction Model 2100 6½-Digit Resolution Digital Multimeter Control software You must have one of the following items installed on the remote interface in order to obtain the proper VISA layer: • Keithley Instruments I/O Layer 5.0 or greater. •...
  • Page 8: Environmental Conditions

    Model 2100 6½-Digit Resolution Digital Multimeter Section 1: Introduction The adjustment procedure consists of connecting the Fluke 5700A Calibrator and Fluke 5725A Amplifier (or equivalent) outputs to the 2100 front panel input, setting up appropriate ranges, and performing adjustment functions by sending specific SCPI commands. In the following sections, you will be provided with SCPI commands to be sent to the 2100.
  • Page 9: Recommended Test Equipment

    Section 1: Introduction Model 2100 6½-Digit Resolution Digital Multimeter Recommended test equipment Use a Fluke Model 5700A Calibrator and 5725A Amplifier (or the equivalent) to perform the 2100 multimeter adjustments. Firmware revision If your 2100 has firmware versions 1.03 or 1.04, the firmware must be updated to the latest version before this procedure can be performed.
  • Page 10: Calibration Code

    Model 2100 6½-Digit Resolution Digital Multimeter Section 1: Introduction Calibration code To unlock the calibration function: 1. Unlock the calibration function by sending the SCPI command: CAL:PROT:CODE <up to 8-character string> The default code command is: CAL:PROT:CODE p8125652 2. Initiate the calibration routine by sending the SCPI command: CAL:PROT:INIT 2100-905-01 Rev.
  • Page 11: Zero Calibration Front Panel

    Section 2 Zero calibration front panel In this section: Front-panel calibration ............. 2-1 Front-panel calibration To use the front-panel calibration: 1. Connect a low-thermal, four-wire short (Keithley Instruments Model 8610 or equivalent) to the instrument front-panel input terminals. 2. Set INPUTS select switch to front terminals. Allow the connections to stabilize for a minimum of five minutes before proceeding.
  • Page 12: Zero Calibration Rear Panel

    Section 3 Zero calibration rear panel In this section: Rear-panel calibration .............. 3-1 Rear-panel calibration To use the rear-panel calibration: 1. Connect low-thermal, four-wire short (Keithley Instruments Model 8610 or equivalent) to the instrument rear panel input terminals. 2. Set INPUTS select switch to rear terminals. Allow connections to stabilize for a minimum of five minutes before proceeding.
  • Page 13: Voltage Function Adjustment (Dc And Ac)

    Section 4 Voltage function adjustment (DC and AC) In this section: Voltage function adjustment ............. 4-1 Voltage function adjustment The ranges for dc voltage (dc V) adjustment are 100 mV, 1 V, 10 V, 100 V, and 1000 V. For ac voltage (ac V) adjustment, the ranges are 100 mV, 1 V, 10 V, 100 V, and 750 V RMS at 1 kHz.
  • Page 14: Dc Voltage Range Adjustment

    Section 4: Voltage function adjustment (DC and AC) Model 2100 6½-Digit Resolution Digital Multimeter DC voltage range adjustment To adjust DC voltage: 1. Set the 5700A to 0 V dc, RANGE: AUTO and output to STANDBY mode. 2. Using shielded, low-thermal EMF cables, connect the Fluke 5700A output HI and LO to the 2100 input HI and LO terminals.
  • Page 15 Model 2100 6½-Digit Resolution Digital Multimeter Section 4: Voltage function adjustment (DC and AC) 22. Wait until the following message is displayed on the 2100: Cali OK 23. Set the 5700A output to 0.1 V dc. 24. Adjust the full-scale measurement by sending the following SCPI command: CAL:PROT:DC:STEP 2,0.1 25.
  • Page 16: Ac Voltage Range Adjustment

    Section 4: Voltage function adjustment (DC and AC) Model 2100 6½-Digit Resolution Digital Multimeter AC voltage range adjustment To adjust the voltage range: 1. Set the 5700A to 0.01 V at 1 kHz and output to STANDBY mode. 2. Using coaxial cable with dual banana terminals, connect the Fluke 5700A output HI and LO to the 2100 input HI and LO terminals.
  • Page 17 Model 2100 6½-Digit Resolution Digital Multimeter Section 4: Voltage function adjustment (DC and AC) 22. Wait until the following message is displayed on the 2100: Cali OK 23. Set the 5700A output to 10 V. 24. Adjust the full-scale measurement by sending the following SCPI command: CAL:PROT:AC:STEP 2,10 25.
  • Page 18: Ohms Function Adjustment

    Section 5 Ohms function adjustment In this section: Ohms function adjustment ............5-1 Ohms function adjustment There are two resistance adjustments available: Resistance low range adjustment (100 Ω - 1 MΩ)  Resistance high range adjustment (10 MΩ - 100 MΩ) ...
  • Page 19 Section 5: Ohms function adjustment Model 2100 6½-Digit Resolution Digital Multimeter Enter the actual output value in scientific notation format. For example, if the calibrator’s display shows 0.9999615 MΩ, enter this value as: CAL:PROT:DC:STEP 2,0.9999615E6 11. Wait until the following message is displayed on the 2100: Cali OK 12.
  • Page 20 Model 2100 6½-Digit Resolution Digital Multimeter Section 5: Ohms function adjustment 30. Wait until the following message is displayed on the 2100: Cali OK 31. Set the 5700A output to 100 kΩ. 32. Adjust the full-scale measurement by sending the following SCPI command: CAL:PROT:DC:STEP 2,<ACTUAL CALIBRATOR OUTPUT>...
  • Page 21: Resistance High-Range Adjustment (10 Mω - 100 Mω )

    Section 5: Ohms function adjustment Model 2100 6½-Digit Resolution Digital Multimeter 54. Set the measurement rate to 10 PLC by sending the following SCPI command: FRES:NPLC 10 55. Set the 5700A to 0 Ω and output mode to OPERATE. 56. Adjust the input offset by sending the following SCPI command: CAL:PROT:DC:STEP 1,1E2 57.
  • Page 22 Model 2100 6½-Digit Resolution Digital Multimeter Section 5: Ohms function adjustment 13. Set the 5700A to 0 Ω, 2 WIRE COMP OFF, EX SNS button off, EX GRD button off, and output to STANDBY mode. 14. Using shielded, low-thermal EMF cables connect the Fluke 5700A output HI and output LO to the 2100 input HI and input LO terminals.
  • Page 23: Current Function Adjustment (Dc And Ac)

    Section 6 Current function adjustment (DC and AC) In this section: Current function adjustment (DC and AC) ........ 6-1 Current function adjustment (DC and AC) There are two current function adjustments available: DC current range adjustment  AC current range adjustment ...
  • Page 24 Section 6: Current function adjustment (DC and AC) Model 2100 6½-Digit Resolution Digital Multimeter 12. Set the 2100 to the 0.1 A dc current range by sending the following SCPI command: CONF:CURR:DC 0.1 13. Set the measurement rate to 10 PLC by sending the following SCPI command: CURR:NPLC 10 14.
  • Page 25: Ac Current Range Adjustment

    Model 2100 6½-Digit Resolution Digital Multimeter Section 6: Current function adjustment (DC and AC) AC current range adjustment To adjust the AC current range: 1. Set the 5700A to 0.1 A at 1 kHz, CURRNT OUTPUT: 5725, and output to STANDBY mode. 2.
  • Page 26: Calibration Date

    Section 7 Calibration date In this section: Calibration date ................ 7-1 Calibration date To adjust the calibration date: 1. Update the calibration date by sending the following SCPI command: CAL:PROT:DATE <MM/DD/YYYY> The date string must be enclosed in double quotes (“<string>”). For example, if the calibration date is 5 Jan 2020, send the following SCPI command: CAL:PROT:DATE ”05/01/2020”...
  • Page 27: Performance Verification

    Section 8 Performance verification In this section: Performance verification ............8-1 Performance verification After the adjustment is completed, the 2100 must be verified to make sure that its performance is within manufacturer’s specifications. Also, specifications are valid after a 2-hour warm up. Perform accuracy verifications using Fluke 5700A and 5725A standards and a function generator capable of sourcing frequency with an accuracy of 25 ppm or better.
  • Page 28 Section 8: Performance verification Model 2100 6½-Digit Resolution Digital Multimeter AC voltage accuracy verification Range Test point Limits of accuracy Lower limit Upper limit 100 mV 100.0000 mV @ 1 kHz 99.87 mV 100.13 mV 100.0000 mV @ 35 kHz 99.79 mV 100.21 mV 1.000000 V @ 1 kHz...
  • Page 29 Model 2100 6½-Digit Resolution Digital Multimeter Section 8: Performance verification DC current accuracy verification Range Test point Limits of accuracy Lower limit Upper limit 10 mA 10.00000 mA 9.992 mA 10.008 mA -10.00000 mA -10.008 mA -9.992 mA 100 mA 100.0000 mA 99.939 mA 100.061 mA...
  • Page 30 Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments. All other trademarks and trade names are the property of their respective companies. Keithley Instruments Corporate Headquarters • 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 • 1-800-935-5595 • www.tek.com/keithley 3/17...

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