3 Features and Functions
104 Keysight 34420A User’s Guide
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 is stored
in the meter’s error queue. See Chapter 5, "Error Messages" 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. When you have read all errors from the queue,
the ERROR annunciator turns off. The meter beeps once for each error
generated.
– If more than 20 errors have occurred, 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 and you read the error queue, the meter responds with +0, “No error”.
– The error queue is cleared when power has been off or after a *CLS (clear
status) command has been executed.
– Front-panel operation: read the errors under the 3: ERROR command in the
SYStem menu.
If the ERROR annunciator is on, press
(Menu Recall) to read the
errors stored in the queue. The errors are listed horizontally on the “parameter”
level. The error queue is cleared when you go to the “parameter” level and then
turn off the menu.
– Remote interface operation: use the following command to read the errors.
SYSTem:ERRor?
Errors have the following format (the error string may contain up to 80
characters).
–113, "Undefined header"
ERR 1: -113
First error in queue Error code
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