Agilent Technologies E4418B User Manual page 109

Instrument Self Test
If
Instrument Self Test
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 Table 2-1 on
page 2-11 for connection requirements for the Agilent 8480 series power
sensors). The power reference signal is turned on automatically after any key
is pressed.
2. The power meter automatically makes a power measurement. If the
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 power meter reading is made the message "Passed" is displayed,
otherwise "Failed" is displayed.
If the confidence check fails, the failure appears in the error queue. To examine the
error queue go to the "Errors" screen (refer to Chapter 4).
Agilent E4418B User's Guide
is selected, the following tests are run, these are the
Power Meter Operation
Self Test
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