Agilent Technologies 8487D Guia do Utilizador descarregar pdf (Página 106)

Power Meter Operation

Self Test

2-66 Agilent E4418B User’s Guide

Self Test

The power meter has three distinct self test modes:

• power on self test, which occurs automatically when you turn on

the power meter.

• confidence check, which is accessed via the front panel and

requires your assistance in order to verify the POWER REF and

measurement path accuracy.

• troubleshooting mode, which is accessed via the front panel or

remotely. The front panel softkey menu allows you to run

individual tests, whereas the remote command runs a complete

series of tests as listed in “Remote Testing”, on page 2-69.

Power On Self Test

The power on self test is performed automatically when the power meter

is turned on and takes approximately 10 seconds to complete. The power

on self test consists of the following tests:

• RAM Battery

• Calibrator

• Measurement AssemblyFan

• Serial Interface

• Option 001 Battery

Refer to “Test Descriptions”, on page 2-70 if you require a description of

each individual test.

As the power on self test takes place, the message “Testing...” appears

next to the name of the test which is being performed. When each test is

complete, the message “Testing...” is replaced by either the message

“Passed” or “Failed”. The option 001 Battery test can also produce the

message “Not Present”. If a failure occurs the message “Power-up H/W

Err” appears. Any errors are also written to the error queue and can be

examined in the “Errors” screen by pressing , ,

System

Inputs

Error List

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