National Instruments Data Acquisition Device E Series - Manual (Page 164)

Appendix A Device-Specific Information
© National Instruments Corporation A-29 E Series User Manual
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-27 shows circuitry of the AO EXT REF on BNC DAQPads.
Figure A-27. 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 the
Figure A-28 and Figure A-29.
Figure A-28. Counter 0 Out
Figure A-29. PFI 0/AI Start Trigger
AO EXT REF
AI GND
CTR 0 OUT
D GND
PFI 0/AI START TRIG
D GND