User`s manual

Comments Opening Channels. Use the OPEN <channel_list> command to open
channels. For example, to open channel 02 and the DT Tree Switch,
execute:
OPEN (@102,193)
Query Open/Closed Channels. The CLOS? <channel_list>and
OPEN? <channel_list> commands determine if the channel in the channel
list is open or closed, respectively. (The query command does not
determine if, in the event of a hardware failure, the channel remains
open/closed.) For example, to determine if channel 02 is closed, execute:
CLOS? (@102)
and enter the response into a variable.
A response of 1 indicates that the channel is closed; a response of 0
indicates that the channel is open. The reverse is true for the OPEN?
<channel_list> command. The correct responses for both the OPEN? and
CLOS? commands are:
CLOS? 1 = Closed
0 = Open
OPEN? 1 = Open
0 = Closed
Note You must read the query response after sending a query command or the
switchbox will generate an error.
Measuring with the Agilent E1326/E1411 Multimeters. The Agilent
E1326/E1411 Multimeters can directly measure channels of single or
multiple multiplexer modules in a scanning voltmeter configuration. The
multimeters, when correctly programmed, automatically close the
appropriate Tree Switches. For more information, see the Agilent
E1326/E1411 User’s manual.
28 Using the Agilent E1346A Multiplexer Module Chapter 3