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OPEN? [ROUTe:]OPEN? <channel_list> returns the current state of the channel(s)
queried. The channel_list is in the form (@ccnn) (see
[ROUTe:]OPEN for
definition). The command returns 1 for channel(s) open or returns 0 for
channel(s) 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 100 and 213 of a two-module switchbox and
queries channel 213 state. Since channel 213 is programmed to be open, 1
is returned.
OPEN (@100,213) ! Open channels 100 and 213
OPEN? (@213) ! Query channel 213 state
50 HP E1366A/E1367A RF Multiplexers Command Reference Chapter 5