HP 8648 A/B/C/D - Changpuak.ch

Performance lksts
Calibration Cycle
The procedures in this chapter test the electrical performance of the
signal generator. These tests do not require access to the interior of
the instrument.
This chapter contains the following information:
Required Test
Equipment List
A list of all the equipment required to
perform these manual performance tests. For
a comprehensive list of all test equipment
required to perform these tests plus the
manual adjustments, and the automated
adjustments and performance tests, see
Chapter 5, “Service”.
Performance Tests The manual and automated performance tests
required to verify the signal generator to its
specifications. Most of these performance tests
are performed manually, however, there is a
single automated performance test.
8
The Bwer Level Accurucy performance test is
the automated test. If this test is run, the RF
L.evel Accuracy performance test, one of the
manual tests, does not need to be performed.
The description for this automated performance
test is located after the descriptions for the
manual performance tests. Refer to “Service
Support Software” in Chapter 7 “Adjustments”
for information on using the service support
software that runs this performance test.
Test Records A test record for each model of the HP 8648 is
located at the end of this chapter. These test
records are used to record the measurements
for the manual performance tests. Keep these
copies as masters and use a photocopy for each
calibration.
See Chapter 4, “Specifications, n for the specifications for each
HP 8648 model.
This instrument requires periodic verification of performance. Under
normal use and environmental conditions, an instrument should be
calibrated every 2 years. Normal use is defined to be about 2,000
hours of use per year.
Performance Tests 8-1