User`s manual

SYSTem
The SYSTem subsystem returns the error numbers and error messages in
the error queue of a switchbox, and returns the types and descriptions of
modules (cards) in a switchbox.
Subsystem Syntax SYSTem
:ERRor?
:CDEScription? <number>
:CTYPe? <number>
:CPON <number> |ALL
: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
the 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 number is always a negative
number. Each 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.
Example Reading the Error Queue
SYST:ERR? Query the error queue
:CDEScription? SYSTem:CDEScription? <number>returns the description of a selected
module (card) in a switchbox.
Parameters
Parameter Name Parameter Type Range of Values
number numeric 1 - 99
Comments
• Multiplexer Module Description: The SYSTem:CDESciption?
<number>command returns:
"48 Channel Single-Ended Relay Mux"
Chapter 5 Agilent E1346A Multiplexer Command Reference 55