Keithley 3700 series Reference Manual page 164

Section 9: Instrument Control Library (ICL)
channel.close
Also see
Example
channel.connectrule
Attribute
Usage
Remarks
Example
9-20
channel.exclusiveclose (on page 9-21)
channel.exclusiveslotclose
channel.open (on page 9-34)
dmm.close (on page 9-77)
To close channels 1 to 5 on Slot 1, Channel 3 on Slot 3 and mychans:
channel.close("1001:1005, 3003, mychans")
To close Channel 1 on Slot 2 and analog backplane relay 3 in bank 1 on Slot 2:
channel.close("2001, 2913")
Indicates the connection rule for closing and opening channels in the system.
To read the connect rule:
rule = channel.connectrule
To write the connect rule:
channel.connectrule = rule
Set rule to:
channel.BREAK_BEFORE_MAKE or 1
to have BBM connections for relays in system relays
channel.MAKE_BEFORE_BREAK or 2
to have MBB connections for relays in system relays
channel.OFF or 0
to not guarantee a connection rule. The system will close relays as it is able to without
adhering to a rule.
When the connection rule is set to channel.OFF, the command being processed uses
the most optimal connection rule at that time. Therefore, the same command may be
connected using BBM and then later use MBB. Use this setting when you don't care
which rule is used and don't need a specific rule each time a command is processed.
Otherwise, use one the other two settings to indicate your desired connection rule.
This attribute applies to switch cards like EMR, reed relay cards.
Default setting and channel.reset rule is channel.BREAK_BEFORE_MAKE
Changing this attributes settings causes an existing scan list to be rebuilt based on the
new setting.
Set the connect rule in the system to BBM:
channel.connectrule =
channel.BREAK_BEFORE_MAKE
Series 3700 System Switch/Multimeter Reference Manual
(on page 9-23)
Document Number: 3700S-901-01 Rev. A / August 2007