Appendix A Device-Specific Information
NI USB-621x User Manual A-18 ni.com
Refer to the Digital I/O on USB-6212/6216 Devices section of Chapter 6,
Digital I/O, and the Connecting PFI Input Signals section of Chapter 7,
PFI, for more information.
USER
The USER BNC connector allows you to use a BNC connector for a digital
or timing I/O signal of your choice. The USER BNC connector is routed
(internal to the USB-6212/6216 BNC) to the USER screw terminal, as
shown in Figure A-11.
Figure A-11. USER BNC Connection
Figure A-12 shows an example of how to use the USER BNC. To access
the PFI 8/P2.0 signal from a BNC, connect USER on the screw terminal
block to PFI 8/P2.0 with a wire.
Figure A-12. Connecting PFI 8/P2.0 to USER BNC
USER
D GND
Px.x
Px.x
Px.x
Px.x
Px.x
Screw
Te r m i nal
Block
USER BNC
D GND
Internal
Connection
BNC Cable
PFI 8
Signal
USER
AI SENSE
AI GND
D GND
PFI 15/P2.7
PFI 14/P2.6
PFI 13/P2.5
PFI 12/P2.4
D GND
PFI 11/P2.3
PFI 10/P2.2
PFI 9/P2.1
PFI 8/P2.0
USER BNC
D GND
Screw
Te r m i nal
Block
Internal
Connection
D GND
D GND
+5 V
D GND
P0.7
P0.6
P0.5
P0.4
D GND
P0.3
P0.2
P0.1
P0.0
Wire
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