Last updated: January 16, 2009
If you are experiencing problems with your test set, first ensure that you have performed the recommended calibrations (see the "Calibrating the Test Set" topic in the Related Topics below). If you are still experiencing problems, run the following verifications to determine if a hardware failure has occurred in your test set.
The
Self Test
verification checks the integrity of the test set's RF Interface module.
You do not have to perform the
Self Test
verification from each application/format in your test set; performing it from one application/format verifies the test set's RF Interface module.
To initiate the
Self Test
verification from the front panel, press the
SYSTEM CONFIG
key, press the right
More
(
1 of 2
) key, and select
Self Test
(
F8
). To initiate the
Self Test
verification from a remote program, use the *TST? query (see the "IEEE 488.2 Common Commands" topic in the Related Topics below).
The
Self Test
verification takes approximately 30 seconds to execute, and returns 0 (pass) or -330 (fail).
The
Thermal Power Null Adjustment
is described in detail in the "Calibrating the Test Set" topic in the Related Topics below. The
Thermal Power Null Adjustment
is a periodic calibration that you must perform on your test set. However, if you are experiencing problems with your test set, you can also use the
Thermal Power Null Adjustment
to ensure that your test set's Thermal Power Detector auto-null circuit has not drifted such that it is no longer able to null the power detector. If this occurs, the
Thermal Power Null Adjustment
returns a 1 (fail).