System Switch/Multimeter User's Manual  Section 4: 
Closing and Opening Switching Module Channels 
-900-01 Rev. A / August 2007  4
To see the image associated with a channel pattern, use the channel.pattern.getimage 
command. For example to see the image of the pattern just created called 'one4wire': 
   print(channel.pattern.getimage('one4wire'))  1001(1031),1911,1922 
NOTE  Paired channel are indicated in parenthesis <ch_list> queries (on page 4-13). 
 
Close/open commands and operation 
NOTE  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. 
The command or operation used to request the close or open will specify how the action should 
be completed. The open/close action may be executed to achieve a switching or measuring 
application. 
Available commands for switching: 
 channel.close 
 channel.exclusiveclose 
 channel.exclusiveslotclose 
 channel.open 
  scanning (only with function of DMM configuration set to 'nofunction') 
 
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.
 
channel.exclusiveslotclose 
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.
 
 
For a channel, it will open the channels and backplane relays that 
would get closed with channel.close.  For channel patterns, it would 
open items a
ssociated with the image of the pattern.