NI myDAQ User Guide and Specifications
10
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Connecting Signals
Figure 4 shows the available audio, AI, AO, DIO, GND, and power signals
accessed through the 3.5 mm audio jacks and screw terminal connections.
Refer to Table 1 for descriptions of these signals.
Caution
Signal wires
must
be securely affixed and screwed down in the screw terminal
connector to ensure proper connection.
Figure 4.
NI myDAQ 20-Position Screw Terminal I/O Connector
Table 1.
Screw Terminal Signal Descriptions
Signal Name
Reference
Direction
Description
AUDIO IN
—
Input
Audio Input
—Left and right audio inputs on
a stereo connector
AUDIO OUT
—
Output
Audio Output
—Left and right audio outputs
on a stereo connector
+15V/–15V
AGND
Output
+15 V/–15 V power supplies
AGND
—
—
Analog Ground
—Reference terminal for AI,
AO, +15 V, and –15 V
AO 0/AO 1
AGND
Output
Analog Output Channels 0 and 1
AI 0+/AI 0–;
AI 1+/AI 1–
AGND
Input
Analog Input Channels 0 and 1
DIO <0..7>
DGND
Input or
Output
Digital I/O Signals
—General-purpose digital
lines or counter signals
DGND
—
—
Digital Ground
—Reference for the DIO
lines and the +5 V supply
5V
DGND
Output
5 V power supply
AUDIO
IN
AUDIO
OUT
