User manual

Appendix A Device-Specific Information
E Series User Manual A-74 ni.com
Refer to the Connecting Analog Output Signals section of Chapter 3,
Analog Output, for more information.
AO External Reference
The AO EXT REF input controls the voltage range of analog output signals.
Figure A-61 shows circuitry of the AO EXT REF on BNC DAQPads.
Figure A-61. AO EXT REF
Refer to the Reference Selection section of Chapter 3, Analog Output, for
more information.
Counter 0 Out and PFI 0/AI Start Trigger
You can access the Counter 0 Out and PFI 0/AI Start Trigger signals
through their respective pins on BNC DAQPads, as shown in Figure A-62
and Figure A-63. Refer to the Counter 0 Internal Output Signal section of
Chapter 5, Counters, for more information on counter signals. Refer to
Chapter 6, Programmable Function Interfaces (PFI), for more information
on programmable function interface signals. Refer to the AI Start Trigger
Signal section of Chapter 2, Analog Input, for more information.
Figure A-62. Counter 0 Out
Figure A-63. PFI 0/AI Start Trigger
AO EXT REF
AI GND
CTR 0 OUT
D GND
PFI 0/AI START TRIG
D GND