HP E1563A, User Manual, Page: 87 / 166

Digitizer Command Reference 87
SYSTem
The SYSTem command subsystem returns error numbers and their associated
messages from the error queue. You can also query the SCPI version to which this
instrument complies.
Subsystem Syntax
SYSTem
:ERRor?
:VERSion?
:ERRor?
SYSTem:ERRor? returns the error numbers and corresponding error messages in
the error queue. See Appendix B in this manual for a listing of the error numbers,
messages and descriptions.
Comments
•
When an error is generated by the digitizer, it stores an error number and
corresponding message in the error queue.
•
One error is removed from the error queue each time the SYSTem:ERRor?
command is executed. The errors are cleared in a first-in, first-out order. This
means that if several errors are waiting in the queue, each SYSTem:ERRor?
query returns the oldest (not the most recent) error. That error is then removed
from the queue.
•
When the error queue is empty, subsequent SYSTem:ERRor? queries return
+0,"No error"
. To clear all errors from the queue, execute the *CLS
command.
•
The error queue has a maximum capacity of 20 errors. If the queue overflows,
the last error is replaced with
-350,"Too many errors"
. No additional
errors are accepted by the queue until space becomes available.
Example
Reading the Error Queue
SYST:ERR?
Query the error queue
enter statement
Enter readings into computer.
:VERSion?
SYSTem:VERSion? returns the SCPI version number this instrument complies.
Comments
The information returned is in the format "YYYY.R" where "YYYY" is the year and
"R" is the revision number within that year.