2 Operation and Features
System-Related Operations
54 E364xA User’s and Service Guide
If the complete self- test is successful, PASS is displayed on
the front panel. If the self- test fails, FAIL is displayed and
the ERROR annunciator turns on. Refer to
Chapter 8, “Service
and Maintenance” for instructions on returning the power
supply to Keysight for service.
Front panel operation
To perform the complete front panel self- test, hold down
as you turn on the power supply and hold down the
key until you hear a long beep. The self- test will begin when
you release the key following the beep.
Remote interface operation
*TST?
Returns 0 if the complete self- test passes or 1 if it fails.
Error conditions
When the front panel ERROR annunciator turns on, one or
more command syntax or hardware errors have been
detected. A record of up to 20 errors can be stored in the
power supply’s error queue. Refer to
Chapter 4, “Error
Messages” for more information.
Firmware revision query
The power supply has three microprocessors for control of
various internal systems. You can query the power supply to
determine which revision of firmware is installed for each
microprocessor.
The power supply returns three revision numbers. The first
number is the firmware revision number for the main
processor; the second is for the input/output processor; and
the third is for the front panel processor.
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