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Chapter 3 Front-Panel Operation
System-Related Operations
55
3
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 chapter 5 “Error Messages”,
starting on page 123 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, “Too many errors”. 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.
• Front-panel operation:
Press (
Local) key to return to front-panel operation mode if the power
supply is in remote operation mode.
If the
ERROR annunciator is on, press key to view the errors. Use the
knob to scroll through the error numbers. Press to view the text of the
error message. Press or key to increase or decrease the scrolling
speed of the text on the display. All errors are cleared when you exit the menu
or let the display time out for about 30 seconds.
• Remote interface operation:
SYSTem:ERRor? Read and clear one error from the error queue
Errors have the following format (the error string may contain up to 80
characters).
-102,
‘‘
Syntax error
’’
3: ERR -102
Store
Local
Error
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