HP 3457A Service Manual page 56

SECTION IV
PERFORMANCE TESTS
4-1. INTRODUCTION
4-2, Section IV contains Performance Tests designed to verify the accuracy of the HP 3457A Multimeter.
Accuracy specifications are listed in Table 1-1 of this manual. This section also contains Operational
Verification Tests which provide a more rapid method of testing the operation and accuracy of the unit.
The Operational Verification Tests are designed to provide a 90% confidence that the HP 3457A is opera-
tional and meets specifications. Both the Performance Tests and Operational Verification Tests can be per-
formed without access to the interior of the instrument.
4-3. EQUIPMENT REQUIRED
4-4, Equipment required for the performance tests and operational verification tests are listed in the
Recommend Test Equipment table in Section I of this manual. Equipment other than that recommended
may be used as long as the critical specifications are met
4-5. TEST RECORD
4-6, Results of the performance or operational verification tests may be tabulated on the Test Record lo-
cated at the end of the respective procedures. The Test Record lists all of the tested specifications and their
acceptable limits. It is suggested that the performance tests or operational
verification tests be performed
and the results tabulated when the instrument
is received.
These results can be used for comparison
with
periodic calibration results.
4-7. CALIBRATION CYCLE
4-9. TEST CONSIDERATIONS
4-10. General
4-1