Model 2701 User’s Manual Close/Open Switching Module Channels 2-21
b. ROUTe:MULTiple:OPEN <clist>
With this command, you can open one or more switching module channels.
When you send this command to open the channels specified in the <clist>,
only those listed channels will open. Channels not specified are not affected.
NOTE *OPC or *OPC? should be used with :ROUT:MULT:OPEN if the
<clist> is large. Details on *OPC and *OPC? are provided in
Section 12.
c. ROUTe:OPEN:ALL
This command functions the same as the front panel OPEN key (ALL menu
option). It simply opens all channels (including non-measurement channels) in
the mainframe.
d. ROUTe:MULTiple:CLOSe?
This query command returns a <clist> of all closed channels, including
non-measurement channels and paired channels for 4-wire functions.
e. ROUTe:MULTiple:CLOSe:STATe? <clist>
This query returns a “0” (open) or “1” (closed) for every channel specified in
the <clist>. It is valid for both measurement and non-measurement channels.
For example, assume channel 125 is closed, and you use this command to
query channels 101, 104, and 125 (<clist> = (@101, 104, 125)). The response
message returns “0, 0, 1” to indicate that channels 101 and 104 are open, and
channel 125 is closed.
Remote programming example (multiple channel operation)
The following example assumes a Model 7700 installed in slot 1. This command sequence
connects channel 101 to channel 111 (through channel 123). Note that these two closed
channels will be internally isolated from the DMM since the backplane isolation channels
(124 and 125) will be open.
NOTE The following example can be run from the KE2700 Instrument Driver using the
example named “CloseChannels” in Table G-1 of Appendix G.
ROUT:OPEN:ALL ' Open all channels.
ROUT:MULT:CLOS (@101,111,123) ' Close channels 101, 111, and 123.
When finished with multiple channel operation, it is a good, safe practice to open all
channels (ROUT:OPEN:ALL).
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