84
Keysight E1460A 64-Channel Relay Multiplexer User Guide
Relay Multiplexer Command Reference
[ROUTe:]
–
0995
to connect lower and upper common buses together (64-channel
two-wire operation)
–
0996
to connect analog bus Guard to the LO line on the upper 32 channels
(banks 4 to 7)
*OPC? Command:
Using the *OPC? command after the CLOSe command in your
programs will ensure that the channel CLOSe command has executed prior to
performing the next function (measure, read, etc.). This programming practice is
highly recommended.
Related Commands:
[ROUTe:]OPEN, CLOSe?, SCAN
*RST Condition:
All multiplexer channels are open.
Example
Closing Multiplexer Channels
This example closes channel 0, bank 0, in card 01, and channel 7, bank 6, in card
02 of a two-module switchbox. Both modules are in two-wire mode.
CLOS (@100,267) !100 closes channel 0, bank 0 of card #1 and 267 closes
channel 7, bank 6 of
card #2
[ROUTe:]CLOSe?
[ROUTe:]CLOSe?
<channel_list>
returns the current state of the channel(s) queried.
Channel_list
has the form (@
ssbc
) or (@
ss0hbc
) (see [ROUTe:]CLOSe for
definition). The command returns "1" if channel(s) are closed or returns "0" if
channel(s) are open.
Comments
Query is Software Readback:
The ROUTe:CLOSe? command returns the current
software state of the channel(s) specified. It does not account for relay hardware
failures. A maximum of 128 channels at a time can be queried for a
multiple-module switchbox.
Three/Four-Wire Modes (WIRE3/WIRE4):
When configured for three- or four-wire
modes, the upper bank pair (4-7) channels cannot be queried. If an attempt is
made to query the upper bank pair (4-7) channels, an error will be generated.
Example
Query Channel Closure
This example closes channel 0, bank 0, in card 01, and channel 7, bank 6, in card
02 of a two-module switchbox and queries channel closure. Since the channels
are programmed to be closed "1,1" is returned.
CLOS (@100,267) !100 closes channel 0, bank 0, card #1 and 267 closes
channel 7, bank 6, card #2