Remote Interface Reference 4
Keysight E3633A and E3634A User’s Guide 125
SYSTem:ERRor?
This command queries the power supply’s error queue. When the front-panel
ERROR annunciator turns on, one or more command syntax or hardware errors
have been detected. Up to 20 errors can be stored in the 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. 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, 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”.
– 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.
SYSTem:VERSion?
This command queries the power supply to determine the present SCPI
version. The returned value is of a string in the form YYYY.V where the “Y’s”
represent the year of the version, and the “V” represents a version number for
that year (for example, 1996.0).
*IDN?
This query command reads the power supply’s identification string. The power
supply returns four fields separated by commas. The first field is the
manufacturer’s name, the second field is the model number, the third field is
not used (always “0”), and the fourth field is a revision code which contains
three numbers. The first number is the firmware revision number for the main
power supply processor; the second is for the input/output processor; and the
third is for the front-panel processor.
The command returns a string with the following format (be sure to dimension
a string variable with at least 40 characters):
HEWLETT-PACKARD,E3633A or E3634A,0,X.X-X.X-X.X
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