National Instruments NI 6239 Switch User Manual


 
© National Instruments Corporation 3-1 NI 6238/6239 User Manual
3
Connector Information
The I/O Connector Signal Descriptions and RTSI Connector Pinout
sections contain information on M Series connectors. Refer to
Appendix A, Device-Specific 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 and AO GND are connected on
the device.
Note: AI GND and AO GND are isolated from earth ground,
chassis ground, P0.GND, and P1.GND.
AI <0..7>± AI GND Input Analog Input Channels 0 to 7±—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–>,
<AI 4+, AI 4–>, <AI 5+, AI 5–>, <AI 6+, AI 6–>,
<AI 7+, AI 7–>
Also refer to the Analog Input Ground-Reference Settings
section of Chapter 4, Analog Input.
Note: AI <0..7>± are isolated from earth ground and chassis
ground.
AO <0..1> AO GND Output Analog Output Channels 0 to 1—These terminals supply the
current output of AO channels 0 to 1.
Note: AO <0..1> are isolated from earth ground and chassis
ground.