1 Obtaining Service
26 Keysight 34980A Service Guide
Cleaning
Clean the outside of the instrument with a soft, lint–free, slightly dampened cloth.
Do not use detergent. Disassembly is not required or recommended for cleaning.
Self Test Procedures
Power–On Self–Test
Each time the instrument is powered on, a subset of self–tests are performed.
These tests check that the minimum set of logic and output hardware are
functioning properly.
Complete Self–Test
To perform a complete self–test send the *TST? command.
This command performs a complete self-test of the instrument and all installed
plug-in modules and returns a pass/fail indication. The self-test runs a series of
tests and, depending upon the modules installed, may take up to 2 minutes to
complete (be sure to set an appropriate interface time out). If all tests pass, you can
have a high confidence that the instrument and all installed plug-in modules are
operational.
If the self–test is successful, SELF–TEST PASSED is displayed on the front panel.
If the self–test fails, SELF–TEST FAILED is displayed and an error number is shown.
Self–test error numbers and their meaning are shown in the table on page 73.
– On the 34945A Microwave Switch/Attenuator Driver, this command performs a
self-test of the 34945A and all connected 34945EXT remote modules.
– If you have a 34951A Isolated DAC Module installed, the self-test will
require an additional 15 seconds to complete per DAC module (a memory test
is performed).
If one or more tests fail, return the instrument to Keysight for service.
The self-test will abort if any signals are connected to ABus1 via the rear-panel
Analog Bus connector (pins 4, 5, and 9). Be sure to disconnect any signals from
ABus1 prior to running the self-test.
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