Rear Signal Connector Signal Descriptions - National Instruments 776572-00 User Manual

Rear Signal Connector

Rear Signal Connector Signal Descriptions

Pin Signal Name
1-2 AOGND
3-6 MCH0± and MCH1±
19 OUTREF
24, 33 DIG GND
25 SERDATIN
26 SERDATOUT
27 DAQD*/A
29 SLOT0SEL*
36 SCANCLK
37 SERCLK
43 RSVD
* Indicates active low.
All other pins are not connected.
See the Timing Requirements and Communication Protocol section in Chapter 2, Configuration
and Installation, for more detailed information on timing. Detailed signal specifications are also
included in Chapter 2.
SCXI-1100 User Manual
Description
Analog Output Ground – Connected to the PGIA
reference when jumper W10 is in position AB-R0.
Analog Output Channels 0 and 1 – Connects to the
data acquisition differential analog input channels.
Output Reference – Serves as the reference node for
the PGIA output in the Pseudodifferential Output
mode. You should connect OUTREF to the analog
input sense of the NRSE data acquisition board.
Digital Ground – Supply the reference for data
acquisition digital signals and are tied to the module
digital ground.
Serial Data In – Taps into the SCXIbus MOSI line
to provide serial input data to a module or Slot 0.
Serial Data Out – Taps into the SCXIbus MISO line
to accept serial output data from a module.
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.
Slot 0 Select – Taps into the SCXIbus INTR* line
to indicate whether the information on MOSI is
being sent to a module or Slot 0.
Scan Clock – Indicates to the SCXI-1100 that the
data acquisition board has taken a sample; also
causes the SCXI-1100 to change channels.
Serial Clock – Taps into the SCXIbus SPICLK line
to clock the data on the MOSI and MISO lines.
Reserved.
B-2
Appendix B
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