Chapter 3 Front-Panel Operation
System-Related Operations
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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 121 for a complete listing of the errors.
• Errors are retrieved in first-in-first-out (FIFO) order. The first error returned
is th e f irs t e rro r t ha t wa s st or ed . Wh en you ha ve rea d a ll err or s fr om th e qu eu e,
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 re mote inte rfac e, th e las t err or st ored in th e que ue (t he mo st re cen t err or)
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:
If the ERROR annunciator is on, press the key repeatedly to read the
errors stored in the queue. All errors are cleared when you read all errors.
• Remote interface operation:
SYST:ERR? Reads and error from the error queue
Errors have the following format (the error string may contain up to 80
characters).
-113, "Undefined header"
ERR -113
Error