:SYSTem
This command collects the functions that are not related to
instrument performance, for example those that perform general
houskeeping and contain information.
Subsystem Syntax
:SYSTem
:ERRor? <query only>
:PRESet <event>
:VERSion? <query only>
:SYSTem:ERRor?
The ERRor? command is a request for an error message from the
error queue in the HP E1440A. This queue contains integers related
to the type of error encountered (if any), in the form of an error
number followed by a string describing the error and/or device
dependent information. For example
-222,
"Data out of range; Start
Frequency is too low".
Maximum length of a string is
255
characters.
The integer ranges from
-32768
to
32767
and individual numbers
within this range are fixed to, or reserved for, specific errors. In
general, negative error numbers tend to be associated with command
syntax type errors such as conflict between values specified within
1
a command, which would cause execution errors. Positive error
numbers are associated with instrument errors, whether they are
hardware faults or attempts to 'misuse' the instrument. A zero value
signifies NO ERRORS.
Refer to Appendix
E
Error Messages
for details of error strings.
As errors occur they are placed in an error queue on a FIFO (first in
first out) basis from which they are read by the system controller.
:SYSTem:PRESet
This command sets the HP E1440A to its "local" state in a similar
manner to *RST (see following section on IEEE
488.2
Commands).
:SYSTem:VERSion?
The VERSion? command is a query only command that returns
a language version identity with which the instrument parser is
-
compatible i.e. it returns the level of SCPI with which it complies.
5-30
Command Reference
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