National Instruments USB-621 Series User Manual page 166

Appendix A Device-Specific Information
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.
NI USB-621x User Manual
Table A-6. Default NI-DAQmx Counter/Timer Pins
Counter/Timer Signal
CTR 0 SRC
CTR 0 GATE
CTR 0 AUX
CTR 0 OUT
CTR 0 A
CTR 0 Z
CTR 0 B
CTR 1 SRC
CTR 1 GATE
CTR 1 AUX
CTR 1 OUT
CTR 1 A
CTR 1 Z
CTR 1 B
FREQ OUT
A-20
Default Terminal Number (Name)
1 (PFI 0)
2 (PFI 1)
34 (PFI 9)
6 (PFI 4)
1 (PFI 0)
2 (PFI 1)
34 (PFI 9)
4 (PFI 3)
3 (PFI 2)
35 (PFI 10)
7 (PFI 5)
4 (PFI 3)
3 (PFI 2)
35 (PFI 10)
8 (PFI 6)
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