How to convert pulses into RPM

[snw]

I am using a counter to count the pulses given from a hall sensor to detect the speed of a motor. I can see the pulses on the graph and I have the operation running in a while loop but I am having issues with setting up a fixed time for the counter to run. I am using a USB 1208LS DAQ which requires Universal Library and I don't know how to convert the pulses that I get into a frequency or RPM's.  

I just learned how to use Labview so this is getting pretty frustrating.

Thanks! 

[Doug_L._Bear]

I am not very familiar with the hardware you have or the Universal Library.  It seems from the spec page for the device however that it does not have any counters on it.  So is this being read in as a digital channel or an analog channel, because I did not see any specifications on the sampling rate of the digital channels?

If this is coming in as an analog signal there are some signal processing VIs that you can use to determine frequency. Specifically Extract Single Tone Information.VI will find the frequency of your analog signal.