4 Calibration Procedures
78 Keysight 34970A/34972A Service Guide
Self-Test
A brief power-on self-test occurs automatically whenever you turn on the
instrument. This limited test assures that the instrument is capable of operation
and also checks the plug-in cards for basic operation.
To perform a complete self-test hold down the
key as you press the power
switch to turn on the instrument; hold down the
key for more than 5
seconds until the instrument beeps (a complete description of these tests can be
found in Chapter 6). The instrument will automatically perform the complete
self-test procedure when you release the key. The self-test will complete in
approximately 20 seconds.
– If the self-test is successful, “PASS” is displayed on the front panel.
– If the self-test fails, “FAIL” is displayed and the ERROR annunciator turns on. If
repair is required, see Chapter 6, "Service" for further details.
– If all tests pass, you have a high confidence (~90%) that the instrument is
operational.
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