Perfomance Testing and Calibration
Introduction
4
4-3
Warning
Service procedures should be performed by qualified service
personnel only. To avoid electrical shock, do not perform any
servicing unless you are qualified to do so.
Introduction 4-1.
This chapter contains performance testing procedures that can be used to verify GMM
operation within customer specifications. A separate set of calibration procedures is also
included; use these procedures for closed-case calibration of the GMM. Equipment
connections for performance testing and calibration are shown at the end of this chapter.
The appropriate connection configuration is referenced in each procedure.
Required Test Equipment 4-2.
Equipment required for performance testing (“P”), calibration (“C) is listed in Table 4-1.
The 5700A is used to calibrate dc volts, ac volts, dc/ac mA/µA, and Ohms. The 5725A
driven by the 5700A is used to calibrate dc and ac amps.
Warning
Ensure that the calibrator is in standby mode before making
any connection between the calibrator and the GMM.
Dangerous voltages may be present on the leads and
connectors.
Alternative Test Equipment (Fluke 5500A) 4-3.
The Fluke 5500A can also be used as the source where a calibrator is called for in
performance testing and calibration. Some performance test points change when a 5500A
is used; these changes are noted in the following tables:
• Table 4-5. AC Volts RMS Performance Test
• Table 4-15. AC Amps RMS Performance Test
• Table 4-16. AC Amps Average Performance Test
In ohms calibration, the 5500A can provide the values called for by the GMM; no value
modification is necessary.
For a general discussion of calibrator use and accuracy, refer to Guardbanding with
Confidence by David Deaver. This publication is available from the Fluke Corporation,
Everett, WA and is published in the 1994 NCSL (National Conference of Standard
Laboratories) Workshop and Symposium Proceedings, pages 383-394.
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