User`s manual

Relay Matrix Switch Command Reference 53Chapter 3
[ROUTe:]OPEN?
[ROUTe:]OPEN? <channel_list> returns the current state of the channel(s)
queried. channel_list has the form (@ssrc) or (@ssrrcc) (see
[ROUTe:]OPEN for definition). The command returns 1 if channel(s) are
open or returns 0 if channel(s) are closed.
Comments Query is Software Readback: The [ROUTe:]OPEN? command returns the
current software state of the channels specified. It does not account for
relay hardware failures. A maximum of 127 channels at a time can be
queried for a multi-module switchbox.
Example Query Channel Open State
This example opens channels 10100 and 20013 of a two-module
switchbox and queries channel 20013 state. Since channel 20013 is
programmed to be open, 1 is returned.
OPEN (@10100,20013)
!Open channels 10100 and 20013
OPEN? (@20013)
!Query channel open state
[ROUTe:]SCAN
[ROUTe:]SCAN <channel_list> defines the channels to be scanned.
Parameters
Comments channel_list Form: For the E1468A, channel_list has the form (@ssrc)
where ss = card number (01-99), r = row number, and c = column
number. For the E1469A, channel_list has the form (@ssrrcc) where

ss = card number (01-99), rr = row number, and cc = column number.
Defining Scan List: When [ROUTe:]SCAN is executed, the channel_list is
checked for valid card and channel numbers. An error is generated for
an invalid channel_list.
Name Type Range of Values Default Value
<channel_list> numeric E1468A: r = 0 to 7 
c = 0 to 7
E1469A: rr = 00 to 03
cc =00 to 15
N/A