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Keysight E1460A 64-Channel Relay Multiplexer User Guide
Using the Relay Multiplexer
Switching Channels
Switching Channels
For general purpose switching, you can switch channels (connect or disconnect
signals) in one-wire, two-wire, three-wire, or four-wire operating modes by
opening or closing specific channel(s).
Switching Channels Comments
Setting Multiplexer Function.
Use FUNCtion <
card_number>
,<
function
> to
configure the Relay Multiplexer, where <
function
> = WIRE1 | WIRE2 | WIRE2X64 |
WIRE3 | WIRE4.
Opening/Closing Channels.
Use CLOSe <
channel_list
> to close bank channel(s) and
OPEN <
channel_list
> to open bank channel(s).
Channel_list
has the form
(@
ss0hbc
) where
ss
= card number (00-99),
0h
= one-wire mode only HI/LO
switching (00 or 01),
b
= bank number (0-7), and
c
= channel number (0-7).
Opening/Closing Multiple Channels.
To close or open multiple channels, place a
comma (,) between the channel numbers. To close or open a range of channels,
place a colon (:) between the channel numbers. You can do this for both single or
multiple module switchboxes. See [ROUTe:]OPEN and [ROUTe:]CLOSe for
additional information.
Querying 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.) See [ROUTe:]OPEN? and
[ROUTe:]CLOSe? for additional information.
Switching Control Relays.
The control relays 0990 to 0996 can also be switched
using the OPEN and CLOSe commands, provided the FUNCtion command is
executed first. See [ROUTe:]OPEN and [ROUTe:]CLOSe for additional
information.
FRES:
When operating in one-wire mode, 4-wire resistance measurement (FRES)
is not supported. See the [ROUTe:]SCAN:MODE command for additional
information.
Analog Bus Connection When Scanning.
In all four modes of operation, the analog
bus can be connected during a scan using the SCAN:PORT command. In
three-wire mode, the paired bank (4-7) channel LO terminal can be connected to
the analog bus Guard terminal. See the [ROUTe:]SCAN:PORT command for
additional information.
For more information, see the [ROUTe:]FUNCtion command. There
is no need to send the [ROUTe:]FUNCtion command if the status
register switch (see "Setting the Status Register Switch") is set to
the correct operating mode.