Details
Channels closed with this command are appended to the already closed channels (no previously
closed channels are opened by this command).
The channelList parameter can include channels with analog backplane relays. If this is the case,
channel.close closes the specified channels and any associated analog backplane relays. For
channel patterns, the analog backplane relays that are closed are the ones that were specified when
the pattern was created. However, for channels, they are the ones specified with the
channel.setbackplane() function. Another option for closing analog backplane relays with this
command is to include them in the channelList parameter.
This command has no effect on how the DMM is configured.
Actions associated with this function include:
• Close the specified items in channelList
• Incur the settling time and any user-specified delay
This command is not available for digital I/O, DAC, and totalizer channels. Calling on a specific
channel generates an error. If the digital I/O, DAC, or totalizer channel is in the range of channels, the
channel is ignored.
• For delay time, see channel.setdelay()
• For analog backplane relays with channels, see channel.setbackplane()
• For channels associated with a channel, see channel.getimage()
• For channels associated with a channel pattern, see
channel.pattern.getimage()
• For channel states (open/close), see channel.getstate()
• For closed channels, see channel.getclose().
An error is generated if:
• The parameter string contains slotX, where X is 1 to 6, or allslots
• A forbidden item is specified
• Specified channel does not support being closed, such as a digital I/O channel
• Channel is paired with another bank for a multiwire application
Once an error is detected, the command stops processing and no channels are closed.
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