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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).

ROUTe:CLOSe? Returns a <clist> of closed measurement

channels.

ROUTe:OPEN:ALL Open all channels, and disable ratio and channel

average.

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

Keithley 2701 User Manual

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