Self Test; Power On Self Test - Agilent Technologies E4418B User Manual

2 Power Meter Operation

Self Test

The power meter has three distinct self test modes:
• power on self test, which occurs automatically when you turn on the
• confidence check, which is accessed via the front panel and requires
• troubleshooting mode, which is accessed via the front panel or

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
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
94
power meter.
your assistance in order to verify the POWER REF and measurement
path accuracy.
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"
"Test Descriptions"
on page 97.
on page 98, if you require a description of
E4418B Power Meter User's Guide
, ,
Error List
.