National Instruments SCXI-1120 - Manual (Page 98)

SCXI-1120 Front Connector Appendix D
SCXI-1120 User Manual D-2 © National Instruments Corporation
Front Connector Signal Descriptions
Pin Signal Name Description
A2 CHSGND Chassis Ground – Tied to the SCXI chassis.
C2 DTEMP Direct Temperature Sensor – Connects the
temperature sensor to pin 18 of the rear signal
connector MCH7- when the terminal block is
configured for direct temperature connection and
jumper W41 is in position 3.
A4 +5 V +5 VDC Source – Used to power the temperature
sensor on the terminal block. 0.2 mA of source not
protected.
C4 MTEMP Multiplexed Temperature Sensor – Connects the
temperature sensor to the output multiplexer.
A6, C6, C8 RSVD Reserved – Reserved for future use. Do not connect
any signals to these pins. TTL/CMOS output. They
are not protected.
A8, A10, C10, No Connect Do not connect any signals to these pins.
A16, C16,A22,
C22, A28, C28
A12, A14, A18, CH7+ through CH0+ Positive Input Channels – The positive inputs to
A26, A20, A24, channels 7 through 0, respectively.
A30, A32
C12, C14, C18, CH7- through CH0- Negative Input Channels – The negative inputs to
C20, C24, C26, channels 7 through 0, respectively.
C30, C32
Further information is given in Chapter 2, Configuration and Installation.