12
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Signal Connection
Signal Name
Type
Description
COM0± (one wire)
COM<0..3>± (two wire)
COM<0..1>A±(four
wire) COM<0..1>B±
(four wire)
Input/Output Common---The common for each
bank.
CH<0..47> (one wire)
CH<0..23>± (two wire)
CH<0..11>A± (four wire)
CH<0..11>B± (four wire)
Input/Output Channels---Where signals are
connected to the switch card. CHχ+
and CHχ- are switched together.
1WireLoRef
Input/Output 1 Wire Low Reference---The common
reference signal used in one-wire
mode.
TRG-IN
Input
Trigger Input---Trigger from an
instrument to advance the switch
card to
the next scan entry.
S_ADV
Output
Scanner Advanced---Trigger to an
instrument that indicated the switch
card has advanced to the next scan
and relays
are debounced.
SHDNn
Input
Emergency Shutdown---The trigger
used
to shutdown the system.
+5V OUT
Output
+5V VDC Source---P5 power
pin.
GND
Output
Ground---Provide system ground pin.
COM0± (one wire)
COM<0..3>± (two wire)
COM<0..1>A±(four
wire)
COM<0..1>B± (four wire)
Input/Output Common---The common for each
bank.
CH<0..47> (one wire)
CH<0..23>± (two wire)
CH<0..11>A± (four
wire)
CH<0..11>B± (four wire)
Input/Output Channels---Where signals are
connected to the switch card. CHχ+
and CHχ- are switched together.
Table 4: Pin Description
