Chapter 1
DAQ System Overview
©
National Instruments Corporation
1-11
–
NI-DAQ\Examples\VBasic
directory contains the examples not
associated with Measurement Studio
•
NI-DAQmx examples for ANSI C are in the
NI-DAQ\Examples\
DAQmx ANSI C Dev
directory
•
Traditional NI-DAQ (Legacy) examples for ANSI C are in the
NI-DAQ\Examples\VisualC
directory
For additional examples, refer to
zone.ni.com
.
I/O Connector Signal Descriptions
Table 1-4 describes the signals found on the I/O connectors. For a summary
of the I/O signals by device family, refer to the specifications document for
your device. Refer to Appendix A,
, for the I/O
pinout for your device.
Table 1-4.
I/O Connector Signal Descriptions
Signal Name
Reference
Direction
Description
AI GND
—
—
AI Ground
—These pins are the reference point for
single-ended AI measurements in RSE mode and the bias
current return point for DIFF measurements. All three
ground references—AI GND, AO GND, and D GND—are
connected on the device.
AI <0..15>
AI GND
Input
AI Channels 0 through 15
—You can configure each
channel pair, AI <
i
,
i
+8> (
i
= 0..7), as either one differential
input or two single-ended inputs.
AI <16..63>
AI GND
Input
AI Channels 16 through 63
(NI PCI-6031E/6033E/6071E only)
—Each channel pair,
AI <
i
,
i
+8> (
i
= 16..23, 32..39, 48..55), can be configured
as either one differential input or two single-ended inputs.
AI SENSE
—
Input
AI Sense
—This pin is the reference node for AI <0..15> in
NRSE mode.
AI SENSE 2
—
Input
AI Sense 2
—This pin is the reference node for
AI <16..63> in NRSE mode.
AO 0
AO GND
Output
Analog Channel 0 Output
—This pin supplies the voltage
output of AO channel 0.
AO 1
AO GND
Output
Analog Channel 1 Output
—This pin supplies the voltage
output of AO channel 1.
AO GND
—
—
AO Ground
—The AO voltages are referenced to these
pins. All three ground references—AI GND, AO GND,
and D GND—are connected on the device.