National Instruments DAQ SCXI-1161, User Manual, Page: 31 / 60

Chapter 3 Signal Connections
SCXI-1161 User Manual 3-6
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National Instruments Corporation
Rear Signal Connector Signal Descriptions
Table 3-3 shows the rear signal connector signal descriptions.
Table 3-3. Rear Signal Connector Signal Descriptions
Pin Signal Name Description
24 or 50 DIG GND Digital Ground—Supplies the
reference for data acquisition board
digital signals and is tied to the
module digital ground. Pin 50 is for
DIO-type boards. Pin 24 is for
MIO-type boards. Jumper W3
selects the pin.
25 SERDATIN Serial Data In—Taps into the
SCXIbus MOSI line to provide serial
input data to a module or Slot 0.
26 or 47 SERDATOUT Serial Data Out—Taps into the
SCXIbus MISO line to accept serial
output data from a module. Pin 47 is
for DIO-type boards. Pin 26 is for
MIO-type boards. Jumper W5
selects the pin.
27 DAQ*/A Data Acquisition Board
Data/Address Line—Taps into the
SCXIbus D*/A line to indicate to the
module whether the incoming serial
stream is data or address
information.