Keithley 2701

Model 2701 User’s Manual Close/Open Switching Module Channels 2-13
Reference:
a. ROUTe:CLOSe <clist>
This command functions the same as the front panel CLOSE key (SINGLE
menu option) to select the system channel. Only one measurement channel can
be specified in the <clist>.
Trying to close an invalid channel (such as a non-measurement channel) with
this command will result in error -222 (Parameter data out of range).
b. ROUTe:CLOSe:STATe? <clist>
This query returns a “0” (open) or “1” (closed) for every measurement channel
specified in the <clist>. For example, assume <clist> = (@101, 104, 107, 102).
The response message “0, 0, 1, 0” indicates that channel 107 is closed.
The state of non-measurement channels cannot be checked with this
command.
c. ROUTe:CLOSe?
This query command returns a <clist> of closed measurement channels,
including paired channels for 4-wire functions.
This query command will not return non-measurement channels, such as
backplane isolation channels and the pole-mode channel.
d. 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)
installed in the mainframe.
Table 2-1
System channel control commands
Commands Description Ref
ROUTe:CLOSe <clist> Specify one measurement channel to close. a
ROUTe:CLOSe:STATe? <clist> Query closed channels in specified list
(1 = closed).
b
ROUTe:CLOSe? Returns a <clist> of closed measurement
channels.
c
ROUTe:OPEN:ALL Open all channels, and disable ratio and channel
average.
d
Channel list parameter:
<clist> = (@SCH)
where: S = Mainframe slot number (1 or 2)
CH = Switching module channel number (must be 2 digits)
Examples: (@101) = Slot 1, Channel 1
(@101, 203) = Slot 1, Channel 1 and Slot 2, Channel 3
(@101:110) = Slot 1, Channels 1 through 10