Agilent Technologies 34972A User Manual page 164

Chapter 4 Features and Functions
System-Related Operations
Self-Test
A power-on self-test occurs automatically when you turn on the
instrument. This limited test assures you that the instrument and all
installed plug-in modules are operational. This self-test does not perform
the extensive set of tests that are included as part of the complete self-
test described below.
A complete self-test runs a series of tests and takes approximately 20
seconds to execute. If all tests pass, you can have a high confidence that
the instrument and all installed plug-in modules are operational.
• If the complete 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. See the 34970A/34972A Service Guide for
instructions on returning the instrument to Agilent for service.
• Front-Panel Operation: To perform the complete front-panel self-test,
hold down as you turn on the instrument and hold down the key
until you hear a long beep. The self-test will begin when you release
the key following the beep.
• Remote Interface Operation:
*TST?
Returns "0" if the self-test is successful or "1" if it fails.
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