Frequency counter with E-Series DAQ Card

[waw]

I am trying to measure the frequency of a signal at 0.1 sec increments using a DAQCard-6062E and an AT-MIO-16E-10. I am using a VI from the examples (frequency counter.vi, in a while loop) which works well with the DAQCard, but it's giving wrong measurements with the AT-MIO card. Why is that?

[Marni]

Hello Waw. Thank you for contacting National Instruments. Please point me to where you found the example frequency counter.vi. I'd like to take a closer look at it. Have a great day!

Marni S.
National Instruments

[waw]

I apologize. The actually VI name is "Measure Frequency.vi" and it is found under the following menu sequency:

NI Measurements --> Data Acquisition --> Counter -- Measure Frequency.vi

[Marni]

Hello Waw,

Take a look at this KnowledgeBase to see if it fixes the problem.

http://digital.ni.com/public.nsf/websearch/862567530005F09E8625681C0074935E?OpenDocument

If not, what version of NI-DAQ do you have? Are you getting incorrect measurements with different ranges of frequencies? Is LabVIEW giving you any errors? Do any examples provide correct results with the AT-MIO-16E-10? Please let me know if you have any questions. Have a great day!

Marni S.
National Instruments