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SCXI-1100 Front Connector
Appendix D
SCXI-1100 User Manual
D-2
© National Instruments Corporation
Front Connector Signal Descriptions
Pin
Signal Name
Description
A1
+5 V
+5 VDC Source – Used to power the temperature
sensor on the terminal block. 0.2 mA of source not
protected.
A2, A5, A16,
CGND
Chassis Ground – Tied to the SCXI chassis.
A24, A32
A3
MTEMP
Multiplexed Temperature Sensor – Connects the
temperature sensor to the output multiplexer.
A4
DTEMP
Direct Temperature Sensor – Connects the
temperature sensor to the MCH1+ signal when the
terminal block is configured for direct temperature
connection.
A6
GUARD
Guard – Connected to the SCXIbus guard.
A7
AOREF
Analog Output Reference – Connected to the
MCH0- signal as described in the Analog
Configuration section.
A8
OUTPUT
Output – Connected to the MCH0+ signal as
described in the Analog Configuration section.
B1-B32
CH31- through CH0-
Negative Input Channels – Negative input channels
to the PGIA.
C1-C32
CH31+ through CH0+
Positive Input Channels – Positive input channels to
the PGIA.
Further information is given in Chapter 2, Configuration and Installation.