Hi, i'm working with a NI 6602 board. Actually we have 3 optical encoder connected to ctr0 (pfi38), crt1(PFI34) and ctr2(PFI30). I need to have synchronous acquisition of frequency. I'm using NI-DAQMX with C . Our goal is to display frequency variation between the 3 entry.
I think using edge count can be a better way to have synched samples but actually i can't change wiring and cannot connect my source signal to pfi39, pfi35 and pfi31. I've tried to use DAQmxSetCICountEdgesTerm(taskHandle,"Dev2/ctr0","Dev2/PFI38") , i have the error -89120 (signal can't be routed). When i set DAQmxSetCICountEdgesTerm(taskHandle,"Dev2/ctr0source","Dev2/PFI38") no error but always count 0.