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what is the pin no for the NI X6221 counter

i am the new guy just started my labview learning, i want to connect a encoder with 5 lines to the NI X6221 board, i have read some of the question posted. i have read the manual also, but the munual just mention that there are 2 pins on this board which can be used as a counter. but i just do not know which 2 can bu used? what's pin no. and how to read  PCI/PXI-6221 (68-Pin) Pinout diagram. which pin no should i used to connect the encoder from the NI 622x Specifications page 14.

 

 

 

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Use DAQ Assistant to configure counter channel.

It'll tell you which PFI line connect to which signal.

Then, go to Start>>All Programs>>National Instruments>>NI-DAQ>>NI-DAQmx Help.

Search 6221, and see which pins belong to which PFI line.

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