Agilent Technologies E4418B User Manual page 120

2 Power Meter Operation
When an individual test is selected, the message "Testing..." appears next
to the name of the test. When the test is complete, the message "Testing..."
is replaced by either the message "Passed" or "Failed". This pass/fail
indication excludes the keyboard test and the bitmap display test, both of
which rely on your interaction to detect a failure.
When the individual test is complete, the result is displayed until
selected. If the self test failed, information about the failure is displayed
on the screen.
Instrument Self Test
If
the same tests which are run using the *TST? command.
• ROM checksum
• RAM
• RAM Battery
• Display Assembly
• Calibrator
• Measurement AssemblyFan
• Serial Interface
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".
Confidence Check
The confidence check requires you to carry out the following procedure.
Instructions are also displayed on the screen.
1 Connect the power sensor to the POWER REF output (Refer to
2 The power meter automatically makes a power measurement. If the
96
Instrument Self Test
Table 2- 1 on page 33 for connection requirements for the Agilent 8480
Series power sensors). The power reference signal is turned on
automatically after any key is pressed.
measured error is within the instrument accuracy specification, the
confidence check has been successful.
While the test is running, the message "Testing..." appears. If the correct
is selected, the following tests are run, these are
E4418B Power Meter User's Guide
Done is