A-30 | ni.com
Appendix A Module/Device-Specific Information
Note For a detailed description of each signal, refer to the I/O Connector Signal
Descriptions
section of Chapter 3, Connector and LED 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.
NI PCI/PCIe/PXI/PXIe-6251 Important Links
The following list contains links specific to your DAQ device:
• Specifications—Refer to the NI 6251 Specifications for more detailed information about
the NI PCI/PCIe/PXI/PXIe-6251 device.
• Accessory and Cabling Options—Refer to the
68-Pin M Series Cables and Accessories
section of Chapter 2, DAQ System Overview, for more information.
• PCI Express Disk Drive Power Connector—Refer to the
RTSI Connector Pinout section
of Chapter 3, Connector and LED Information, for more information.
Table A-14. Default NI-DAQmx Counter/Timer Pins
Counter/Timer Signal Default Pin Number (Name)
CTR 0 SRC 37 (PFI 8)
CTR 0 GATE 3 (PFI 9)
CTR 0 AUX 45 (PFI 10)
CTR 0 OUT 2 (PFI 12)
CTR 0 A 37 (PFI 8)
CTR 0 Z 3 (PFI 9)
CTR 0 B 45 (PFI 10)
CTR 1 SRC 42 (PFI 3)
CTR 1 GATE 41 (PFI 4)
CTR 1 AUX 46 (PFI 11)
CTR 1 OUT 40 (PFI 13)
CTR 1 A 42 (PFI 3)
CTR 1 Z 41 (PFI 4)
CTR 1 B 46 (PFI 11)
FREQ OUT 1 (PFI 14)