Keithley 3700 series Reference Manual page 163

Series 3700 System Switch/Multimeter Reference Manual
channel.close
Remarks
Details
Document Number: 3700S-901-01 Rev. A / August 2007
This function closes specified channels and channel patterns (specified by ch_list).
These closures are appended to the already closed channels (no previously closed
channels are opened by this command).
The ch_list parameter may include analog backplane relays items.
For items specified in ch_list, this function closes the associated channels along with
any associated analog backplane relays. For channel patterns, the analog backplane
relays that get closed are the ones that were specified when the pattern was created
(see channel.pattern.setimage
9-40)). However, for channels, they are the ones specified with the
channel.setbackplane (on page 9-42) function. Another option for getting analog
backplane relays to be closed by this command is to include them in the ch_list
parameter.
This command has no effect on how the DMM is configured.
Actions associated with this function include:

parse the parameter

close the specified items in ch_list

incur the settling time and user delay

command completes
An error will be generated if:

Syntax error in parameter string.

An empty parameter string or parameter string with just spaces.

The parameter string contains ―slotX‖, where X = 1 to 6, or ―allslots‖.

A specified channel or channel pattern is invalid.

Channel number does not exist for slot specified.

Slot is empty.

Channel pattern does not exist.

A forbidden item is specified

Does not support being closed like a digital I/O channel.

Channel is paired with another bank for a multi-wire application.

Internal errors related to communication, power consumption, etc.,.
Once an error is detected, the command stops processing and no channels are closed.
Channels close only if no syntax errors exist in parameter and all channels are valid for
closing.

for delay time see channel.setdelay

for analog backplane relays with channels, see
42)

for channels associated with a channel see

for channels associated with a channel pattern see
channel.pattern.getimage

for channel states (open/close) see

for closed channels see
Section 9: Instrument Control Library (ICL)
(on page 9-38) and channel.pattern.snapshot
(on page 9-44)
channel.setbackplane
channel.getimage
(on page 9-37)
channel.getstate
channel.getclose (on page 9-27)
(on page
(on page 9-
(on page 9-30)
(on page 9-33)
9-19