Keithley 3700 series Reference Manual page 165

Series 3700 System Switch/Multimeter Reference Manual
channel.connectsequential
Attribute
Usage
Remarks
Example
channel.exclusiveclose
Function
Usage
Document Number: 3700S-901-01 Rev. A / August 2007
Indicates if the connection rule is sequential or not.
To read the connect sequential value:
sequential = channel.connectsequential
To write the connect sequential value:
channel.connectsequential = sequential
Set sequential to:
channel.OFF or 0
to disable sequential connecting
channel.ON or 1
to enable sequential connection
If sequential connecting is enabled, the list of channels or analog backplane relays close
sequentially. This allows for a deterministic time for the command to be executed. For
example, if each channel takes 4ms, closing 3 channels takes 12ms. However, if
sequential was OFF then, it may take 4, 8, or 12 ms depending on if the card can close
multiple relays at a time.
This attribute applies to switch cards like EMR and reed relay cards.
Default setting and channel.reset method is channel.OFF
Changing this attributes settings causes an existing scan list to be rebuilt based on the
new setting.
Set the connect sequential to ON:
channel.connectsequential = channel.ON
Closes the specified items so they are exclusively closed.
channel.exclusiveclose(ch_list)
ch_list string listing the channels and channel patterns to exclusively close
Section 9: Instrument Control Library (ICL)
9-21