National Instruments PXI-6289 User Manual page 43

Chapter 3 Connector and LED Information
Signal Name
PFI <8..15>/
P2.<0..7>
USER <1,2>
CHS GND
NC
*
On NI 6225 devices, the reference for each AI <16..63> signal is AI SENSE 2, and each AI <64..79>
signal is AI SENSE in NRSE mode.
†
USB-62xx Screw Terminal users can connect the shield of a shielded cable to the chassis ground lug
for a ground connection. The chassis ground lug is not available on all device versions.
3-4 | ni.com
Table 3-1. I/O Connector Signals (Continued)
Reference Direction
D GND Input or
Output
— —
— —
— —
Description
Programmable Function Interface or Port 2
Digital I/O Channels—Each of these terminals
can be individually configured as a PFI terminal or
a digital I/O terminal.
As an input, each PFI terminal can be used to
supply an external source for AI, AO, DI, and
DO timing signals or counter/timer inputs.
As a PFI output, you can route many different
internal AI, AO, DI, or DO timing signals to each
PFI terminal. You also can route the counter/timer
outputs to each PFI terminal.
As a Port 2 digital I/O signal, you can individually
configure each signal as an input or output.
Connecting Digital I/O Signals
Refer to the
Digital
section of Chapter 6,
PFI. Refer to Table 7-6,
NI-DAQmx Counter/Timer
default NI-DAQmx counter/timer pins for most
M Series devices.
User-Defined Channels—On USB-62xx BNC
devices, the USER <1,2> BNC connectors allow
you to use a BNC connector for a digital or timing
I/O signal of your choice. The USER <1,2> BNC
connectors are internally routed to the USER
<1,2> screw terminals. Refer to the
USER 2
section for more information.
Chassis Ground
†
—This terminal connects to the
USB-62xx BNC device metal enclosure. You can
connect your cable's shield wire to CHS GND for
a ground connection. Refer to the
Chassis Ground
section of Chapter 1,
Started.
No connect—Do not connect signals to these
terminals.
I/O, or to Chapter 8,
68-Pin Device Default
Pins, to find the
USER 1 and
USB Device
Getting