National Instruments DAQ M Series - Manual (Page 23)

© National Instruments Corporation 3-1 NI 6236 User Manual
3
Connector Information
The I/O Connector Signal Descriptions and RTSI Connector Pinout
sections contain information about M Series connectors. Refer to
Appendix A,
NI 6236 Device Information , for device I/O connector
pinouts.
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 input bias
current return point. AI GND, AO GND, and D GND are
connected on the device.
Note: AI GND, AO GND, and D GND are isolated from earth
ground and chassis ground.
AI <0..3>± AI GND Input Analog Input Channels 0 to 3±—For differential
measurements, AI 0+ and AI 0– are the positive and negative
inputs of differential analog input channel 0. Similarly, the
following signal pairs also form differential input channels:
<AI 1+, AI 1–>, <AI 2+, AI 2–>, <AI 3+, AI 3–>
Also refer to the Analog Input Ground-Reference Settings
section of Chapter 4, Analog Input .
Note: AI <0..3>± are isolated from earth ground and chassis
ground.
AO <0..3> AO GND Output Analog Output Channels 0 to 3—These terminals supply the
voltage output of AO channels 0 to 3.
Note: AO <0..3> are isolated from earth ground and chassis
ground.