National Instruments NI 6238 - Manual (Page 25)

Chapter 3 Connector Information
NI 6238/6239 User Manual 3-2 ni.com
AO GND — — Analog Output Ground—AO GND is the reference for
AO <0..1>. 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.
PFI <0..5>/P0.<0..5> P0.GND Input Programmable Function Interface or Static Digital Input
Channels 0 to 5—Each of these terminals can be individually
configured as an input directional PFI terminal or a digital
input terminal.
As an input, each input PFI terminal can be used to supply an
external source for AI or AO timing signals or counter/timer
inputs.
Note: PFI <0..5>/P0.<0..5> are isolated from earth ground,
chassis ground, AI GND, AO GND, and P1.GND.
PFI <6..9>/P1.<0..3> P1.GND Output Programmable Function Interface or Static Digital
Output Channels 6 to 9—Each of these terminals can be
individually configured as an output directional PFI terminal
or a digital output terminal.
As a PFI output, you can route many different internal AI or
AO timing signals to each PFI terminal. You also can route the
counter/timer outputs to each PFI terminal.
Note: PFI <6..9>/P1.<0..3> are isolated from earth ground,
chassis ground, AI GND, AO GND, and P0.GND.
NC — — No connect—Do not connect signals to these terminals.
P0.GND — — Digital Ground—P0.GND supplies the reference for input
PFI <0..5>/P0.<0..5>.
Note: P0.GND is isolated from earth ground, chassis ground,
AI GND, AO GND, and P1.GND.
P1.GND — — Digital Ground—P1.GND supplies the reference for output
PFI <6..9>/P1.<0..3>.
Note: P1.GND is isolated from earth ground, chassis ground,
AI GND, AO GND, and P0.GND.
P1.VCC — — Digital Output Power—P1.VCC supplies the power for
digital output lines. The actual power consumed depends on
the load connected between the digital output and P1.GND.
AO POWER SUPPLY — — Analog Output Power Supply—AO POWER SUPPLY
supplies power to the analog current output terminals.
Table 3-1. I/O Connector Signals (Continued)
Signal Name Reference Direction Description