Remote Testing - Agilent Technologies E4418B User Manual

Power Meter Operation
Self Test

Remote Testing

To invoke the remote self test, the IEEE 488.1 compliant standard command, *TST?
is used. This command runs a full self test and returns one of the following codes:
• 0 - no tests failed
• 1 - one or more tests failed
The remote self test consists of the following tests:
• ROM checksum
• RAM
• RAM Battery
• Display Assembly
• Calibrator
• Measurement Assembly
• Communications Assembly (Implicit)
The communications assembly is tested implicitly, in that the command will not be
accepted or return a result unless the GP-IB interface is functioning correctly.
Refer to "Test Descriptions", on page 2-70 if you require a description of each
individual test.
When the *TST? command is executed, the screen is cleared. As each test takes
place, the name of the test is listed on the screen. While a test is running, the message
"Testing..." appears next to the name of the test. As each stage of the test is
completed, the message "Testing..." is replaced by either the message
"Passed" or "Failed".
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