HP E1328A, Руководство по обслуживанию, Страница: 19 / 70

Chapter 4
Verification Tests
Introduction
The three levels of test procedures described in this chapter are used to
verify that the HP E1328A D/A Converter (DAC):
•
is fully functional (Functional Verification)
•
meets selected testable specifications (Operation Verification)
•
meets all testable specifications (Performance Verification)
WARNING
Do not perform any of the following verification tests unless
you are a qualified, service-trained person and have read the
WARNINGS and CAUTIONS in Chapter 1.
Test Conditions /
Procedures
For valid tests, all test equipment and the HP 3458A multimeter must have a
one-hour warmup, the line voltage must be 115/230 Vac
±
10%, and HP
3458A ACAL must be performed no more than 24 hours before the tests.
See Table 1-2, Recommended Test Equipment for test equipment
requirements.
For best test accuracy, the ambient temperature of the test area should be
between 18°C and 28°C and stable to within
±
1°C. You should perform the
Performance Verification tests at least once a year. For heavy use or severe
operating environments, perform the tests more often.
The verification tests assume the person performing the tests understands
how to operate the mainframe, the DAC and specified test equipment. The
test procedures do not specify equipment settings for test equipment except
in general terms. It is assumed a qualified, service-trained person will select
and connect the cables, adapters, and probes required for the test.
Chapter 4 Verification Tests 19