I have a speed sensor that senses a notch in a motor shaft. When the notch is sensed, a 5V voltage pulse is sent to my NI cDAQ-9171. Does anyone have a good idea how to program LabVIEW to convert that 5V voltage pulse into a RPM measurement?
You could use peak detection, then convert the time to rpm.
I have a NI 9923 connection for a 37-pin DSUB module
This is also not an I/O module, but this is just a Front Mount Screw Terminal Block for 37-Pin D-SUB Modules.
Ok, so you're using an analog input module.
1. Calculate the frequency of acquired signal (in Hz).
2. Multiply it with 60 and thats the RPM.