Appendix A Device-Specific Information
© National Instruments Corporation A-7 NI USB-621x User Manual
Note For more information about default NI-DAQmx counter inputs, refer to Connecting
Counter Signals in the NI-DAQmx Help or the LabVIEW Help in version 8.0 or later.
Table A-3. Default NI-DAQmx Counter/Timer Pins
Counter/Timer Signal Default Terminal Number (Name)
CTR 0 SRC 33 (PFI 8)
CTR 0 GATE 34 (PFI 9)
CTR 0 AUX 35 (PFI 10)
CTR 0 OUT 38 (PFI 12)
CTR 0 A 33 (PFI 8)
CTR 0 Z 34 (PFI 9)
CTR 0 B 35 (PFI 10)
CTR 1 SRC 4 (PFI 3)
CTR 1 GATE 6 (PFI 4)
CTR 1 AUX 36 (PFI 11)
CTR 1 OUT 39 (PFI 13)
CTR 1 A 4 (PFI 3)
CTR 1 Z 6 (PFI 4)
CTR 1 B 36 (PFI 11)
FREQ OUT 40 (PFI 14)
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