Recommended Test Equipment
The test equipment recommended for the performance verification and adjustment procedures is listed below. If the
exact instrument is not available, substitute calibration standards of equivalent accuracy.
An alternate method would be to use the Agilent 3458A 8½–digit Digital Multimeter to measure less accurate yet
stable sources. The output value measured from the source can be entered into the instrument as the target
calibration value.
Application Recommended Equipment Accuracy Requirements
Zero Calibration Agilent 34172B (2 recommended) 4–terminal low thermal short
DC Voltage Fluke 5720A <1/5 instrument 24 hour spec
DC Current Fluke 5720A <1/5 instrument 24 hour spec
Resistance Fluke 5720A <1/5 instrument 24 hour spec
AC Voltage Fluke 5720A <1/5 instrument 24 hour spec
AC Current Fluke 5720A <1/5 instrument 24 hour spec
Frequency Agilent 33500 Series Function Generator <1/5 instrument 24 hour spec
Performance Verification Tests
Use the Performance Verification Tests to verify the measurement performance of the instrument using the
instrument’s specifications listed in the product data sheet.
You can perform three different levels of performance verification tests:
l Self–Test (two types): Internal verification tests that give a high confidence that the instrument is operational,
as described here.
l Quick Verification: A combination of the internal self–tests and selected verification tests.
l Performance Verification Tests: An extensive set of tests that are recommended as an acceptance test when
you first receive the instrument or after performing adjustments.
Quick Performance Check
The quick performance check is a combination of internal self–test and an abbreviated performance test (specified by
the letter Q in the performance verification tests). This provides a simple method to achieve high confidence in the
instrument’s ability to functionally operate and meet specifications. These tests represent the absolute minimum set of
performance checks recommended following any service activity. Auditing the instrument’s performance for the quick
check points (designated by a Q) verifies performance for "normal" accuracy drift mechanisms. This test does not check
for abnormal component failures.
To perform the quick performance check, do the following:
l Perform a self–test.
l Perform only the performance verification tests indicated with the letter Q.
If the instrument fails the quick performance check, adjustment or repair is required.
312 Agilent Truevolt Series DMM Operating and Service Guide
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