Section 9
:
Instrument Control Library (ICL)
Series 3700 System Switch/Multimeter Reference Manual
9-78
Document Number: 3700S-901-01 Rev. A / August 2007
dmm.close
Remarks
The actions associate with this function includes:
Opens previously closed channels if they interfere with measurement including
analog backplane relays 1, 2 and commonside ohms on all slots, if needed. The
opening and closing of channels mimics that of
channel.exclusiveslotclose
(on page
9-23). Therefore, when using a for-loop with dmm.close command, the last channel
on each slot will be closed at the end of the for loop execution. To have additional
analog backplane relays 3 through 6 closed, use them on an alternate slot or if need
to be on same slot then create a channel pattern. To have additional channels
closed then use patterns. Using patterns the user must specify all items to close
including analog backplane relays 1 and 2. With patterns, there is no auto
manipulation of analog backplane relays 1 and 2 like there is with channels.
Any amp channels will open as well. If there is a need to have multiple amp
channels closed at a time then create a channel pattern.
Next, this command will close the associated channels and analog backplane relays
which include analog backplane relay 1 and 2 as needed based on configuration
associated with channel (see
dmm.setconfig
(on page 9-116)) Analog backplane
relays specified by
channel.setbackplane
(on page 9-42) are not used.
This command will configure the DMM based on the configuration associated with
the channel or channel pattern being closed (see
dmm.getconfig
(on page 9-92)). If
the configuration is a default name then, the function of that configuration will be
reset back to factory default settings. User must create a unique DMM configuration
to avoid using factory default settings when assigning to a channel (see
dmm.configure.set and
dmm.setconfig
(on page 9-116) commands.)
Details
An error will be generated if:
There is a syntax error in parameter string.
There is an empty parameter string.
The specified channel or channel pattern is invalid.
The channel number does not exist for slot specified.
The slot is empty.
The channel pattern does not exist.
A forbidden item is specified.
The specified channel does not support being closed (like a digital I/O channel).
More than 1 channel or channel pattern specified.
The channel is paired with another bank for a multi-wire application.
The channel is an analog backplane relay.
The channel‘s configuration is ―nofunction‖.
Once an error is detected, the command stops processing. Channels will open and
close, and the DMM will be reconfigured only if no error is detected. Otherwise,
channels and DMM remain unchanged.
This command allows you to separate the closing of channels from measuring.
Therefore, you may execute any number of commands between the close and measure
commands to satisfy your application needs.
Also see
channel.exclusiveslotclose
(on page 9-21)
channel.getclose
(on page 9-27)
channel.getstate
(on page 9-33)
dmm.open
(on page 9-106)
