Racal Instruments 3152A, Руководство пользователя

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3152A User Manual
Maintenance And Performance Checks 5-4 Racal Instruments
©
2001
Performance
Checks
The following performance checks verify proper operation of the
instrument and should normally be used:
As a part of the incoming inspection of the instrument
specifications;
As part of the troubleshooting procedure;
After any repair or adjustment before returning the instrument to
regular service.
Environmental
Conditions
Tests should be performed under laboratory conditions having
an ambient temperature of 25
o
C
±
5
o
C and at relative humidity of
less than 80%. If the instrument has been subjected to
conditions outside these ranges, allow at least one additional
hour for the instrument to stabilize before beginning the
adjustment procedure. Always perform a self-test sequence
before commencing with the performance checks. The self-test,
if executed without any failure, ensures proper operation of the
synthesizer. If self-test failures have been encountered, the
instrument first needs to be serviced and the source of failure
removed. Instructions on how to perform self-test is given later
in this chapter in the
Self-Test section.
Warm-Up Period
Most equipment is subject to a small amount of drift when it is
first turned on. To ensure accuracy, turn on the power to the
Model 3152A and allow it to warm-up for at least 30 minutes
before beginning the performance test procedure.
Initial Instrument
Setting
To avoid confusion as to which initial setting is to be used for
each test, it is required that the instrument be reset to factory
default values prior to each test. To reset the Model 3152A to
factory defaults, send either of the following commands:
RESet, or *RST.