Performance Verification 3
Keysight DAQ970A/DAQ973A Service Guide 67
Performance Verification Tests
The performance verification tests are recommended as acceptance tests when
you first receive the instrument. The acceptance test results should be compared
against the 90-days test limits. You should use the 24-hours test limits only for
verification within 24 hours after performing the adjustment procedure. After
acceptance, you should repeat the performance verification tests at every
calibration interval.
If the instrument fails performance verification, adjustment or repair is required.
Adjustment is recommended at every calibration interval. If adjustment is not
made, you must guard band, using no more than 80% of the specifications listed
in product data sheet, depending on the calibration interval (1 year, 2 year), as the
verification limits.
Use the Performance Verification Tests to verify the measurement performance of
the instrument. The performance verification tests use the instrument’s
specifications listed in product data sheet. You can perform four different levels of
performance verification tests:
– Self-test: A series of internal verification tests that give a high confidence that
the instrument is operational.
– Quick verification: A combination of the internal self-tests and selected
verification tests.
– 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.
– Optional verification tests: Tests not performed with every calibration.
Perform these tests to verify additional specifications or functions of the
instrument.
NOTE
To ensure optimal test performance:
– Please perform an Autocalibration before you conduct the performance
verification test.
– Ensure all procedures comply with the recommend test conditions. Please
refer to “Test Considerations” on page 47 for more information.
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