3-2 | ni.com
Chapter 3 Connector and LED Information
I/O Connector Signal Descriptions
Table 3-1 describes the signals found on the I/O connectors. Not all signals are available on all
devices.
Table 3-1. I/O Connector Signals
Signal Name Reference Direction Description
AI GND — — Analog Input Ground—These terminals 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..207> Var ies Input Analog Input Channels 0 to 207
(MIO X Series Devices) For single-ended
measurements, each signal is an analog input voltage
channel. In RSE mode, AI GND is the reference for
these signals. In NRSE mode, the reference for each
AI <0..15> signal is AI SENSE; the reference for
each AI <16..79> signal is AI SENSE 2; the
reference for each AI <80..143> is AI SENSE 3; and
the reference for each AI <144..207> is
AI SENSE 4.
For differential measurements on MIO X Series
devices, AI 0 and AI 8 are the positive and negative
inputs of differential analog input channel 0.
Similarly, the following signal pairs also form
differential input channels:
AI <1,9>, AI <2,10>, AI <3,11>, AI <4,12>,
AI <5,13>, AI <6,14>, AI <7,15>, AI <16,24>,
AI <17,25>, AI <18,26>, AI <19,27>, AI <20,28>,
AI <21,29>, AI <22,30>, AI <23,31> and so on.
Also refer to the
Connecting Ground-Referenced
Signal Sources
section of Chapter 4, Analog Input.
(Simultaneous MIO X Series Devices) For
differential measurements on Simultaneous MIO
X Series devices, AI 0+ and AI 0- are the positive
and negative inputs of differential analog input
channel 0.
Also refer to the
Connecting Analog Input Signals
section of Chapter 4,
Analog Input.
To Next Page
Loading...
Need help?
General
