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2-28
Switching module queries (remote operation)
For remote operation, there are commands to identify installed switching modules and
channels that are closed. There are also commands to acquire general information about
the installed modules.
*OPT?
For remote operation, the *OPT? command can be used to determine which switching
modules (or pseudocards) are installed in the Model 2790. For example, assume a Model
7751 is installed in slot 1, and the other slot is empty. After sending *OPT? and addressing
the Model 2790 to talk, the following response message will be sent to the computer:
7751, NONE
ROUTe:CLOSe?
ROUTe:MULTiple:CLOSe?
ROUTe:MULTiple:CLOSe:STATe? <clist>
These query commands are used to determine closed switching module channels.
ROUT:CLOS?
for 4-wire measurements. It will not return non-measurement channels. For details, see
Table 2-1
ROUT:MULT:CLOS?
non-measurement). For details, see
ROUT:MULT:CLOS:STAT?
nel. A "0" is returned for an open channel and a "1" is returned for a closed channel. For
details, see
SYSTem:CARD commands
There is a series of SYSTem:CARD commands that can be used to acquire the following
information about a switching module installed in the Model 2790:
•
•
•
•
The SYSTem:CARD commands are covered in
is used to return a list of closed 7702 channels including the paired channel
and related reference information.
is used to return all closed channels (measurement and
is used to return the state (open or closed) of each specified chan-
Table 2-2
and related reference information.
Return the serial number and firmware revision.
Determine the maximum allowable voltage.
Determine if the module supports multiplexer or isolated channels.
Determine which channels are used for volts/2-wire measurements and which are
used for amps.
Model 2790 SourceMeter
Table 2-2
and related reference information.
Table
15-8.
®
Switch System Reference Manual
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