User`s manual

Agilent E8462A Relay Multiplexer Command Reference 107
SYSTem:ERRor?
SYSTem:ERRor? Returns the error numbers and corresponding error messages in
the error queue of a switchbox. See Appendix C for a listing of switchbox error
numbers and messages.
Comments Error Numbers/Messages in the Error Queue: Each error generated by a
switchbox stores an error number and corresponding error message in the error
queue. The error message can be up to 255 characters long.
Clearing the Error Queue: An error number/message is removed from the queue
each time the
SYSTem:ERRor? command is sent. The errors are cleared first-in,
first-out. When the queue is empty, each following
SYSTem:ERRor? command
returns
+0, “No error”. To clear all error numbers/messages in the queue, execute the
*CLS command.
Maximum Error Numbers/Messages in the Error Queue: The queue holds a
maximum of 30 error numbers/messages for each switchbox. If the queue
overflows, the last error number/message in the queue is replaced by -350, “Too
many errors”. The least recent error numbers/messages remain in the queue and the
most recent are discarded.
*RST Condition:
*RST does not clear the error queue.
Example Reading the Error Queue
SYST:ERR?
Query the error queue, read and print the
numbers/message.