Close/Open Channel Operations And Commands - Keithley 3700 Series User Manual

Section 4: Close-open overview

Close/open channel operations and commands

NOTE
The command or operation used to request the close or open specifies the
completion of either a switch-only operation or a switch with DMM operation.
Available close/open switch only operations:
Channel close
Channel exclusive close
Channel exclusive slot close
Channel open
Corresponding remote commands for switch only operations:
ICL command
channel.close()
channel.exclusiveclose()
channel.exclusiveslotclose()
channel.open()
Available close and open switch with DMM operations:
Dmm close
Dmm open
NOTE
4-10
When the Series 3700 is powered up, all switch cards present in the
system will have all their relays opened. This includes all switching
and all backplane relays.
Action performed
Close items in an append operation (no channels will be opened).
Close items such that only those specified are closed. This will open
any closed item that is not specified in list. If a specified item is
already closed, it will remain closed during the operation.
Close items for specified slots such that only those specified are
closed. Other items on those slots will open. Items closed on other
slots will not be affected. If a specified item is already closed, it will
remain closed during the operation.
It will open the channels and possibly analog backplane relays that
would get closed with channel.close().
An error occurs if you attempt to perform a switch with DMM operation
on an item that does not have an associated DMM configuration.
Series 3700 System Switch/Multimeter User's Manual
3700S-900-01 Rev. C / July 2008