Approximate Frequency Measurement with USB-600X Simple Edge Counter

Publish Date: Sep 06, 2006 | 4 Ratings | 4.50 out of 5 | Print | 3 Customer Reviews | Submit your review
This application written in LabVIEW 7.1 shows how to use the simple event counter functionality of the USB-600X devices and the computer's timer to calculate an approximate average frequency measurement of the signal on the counter channel. This functionality is not inherently available for the devices.

The operation is as follows:
1. Create empty task
2. Create a Counter Input channel to Count Events. The Edge parameter must be set to increment on falling edges.
3. Call the Start VI to arm the counter and begin counting. The counter will be preloaded with the Initial Count.
4. The counter will be continually polled until the Stop button is pressed on the front panel. This will give both counter readings as well as approximate frequency readings.
5. Stop the task
6. Call the Clear Task VI to clear the Task.
7. Use the popup dialog box to display an error if any.

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Customer Reviews
3 Reviews | Submit your review

 - Mar 12, 2011

Thank you, easy to adapt for any frecuency measurement.

Great simple counter - Oct 13, 2009

Used this with my DaqCard-6062E & LabView7.1. Works great. Easy to follow. Thanks a ton!

.NET equivalent for this function - Jun 22, 2006

I was wondering if you have an equivalent sample using the .NET environment and DAQmx

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