Front-Panel Operation 3
Keysight E3633A and E3634A User’s Guide 75
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. See “Error Messages” on page 156 for a
complete listing of the errors.
– Errors are retrieved in first-in-first-out (FIFO) order. The first error returned
is the first error that was stored. Errors are cleared as you read them over
the remote interface. When you have read all errors from the queue, the
ERROR annunciator turns off. The power supply beeps once each time an
error is generated.
– If more than 20 errors have occurred when you operate the power supply
over the remote interface, the last error stored in the queue (the most
recent error) is replaced with -350, “Queue overflow”. No additional errors
are stored until you remove errors from the queue. If no errors have
occurred when you read the error queue, the power supply responds with
+0, “No error” over the remote interface or “NO ERRORS” from the front
panel.
– The error queue is cleared when power has been off or after a *CLS (clear
status) command has been executed. The *RST (reset) command does not
clear the error queue.
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