PCIe-6321 frequency measurements

[Joncombat]

I am trying to use a PCIe-6321 to perform a simple frequency measurement (800-2500hz).  Are there daqmx functions for frequency measurments?  I tried some of the CVI examples but they throw error messages.  Is there an example were I can measure frequency on one of the analog inputs?

[RobertoBozzolo]

Are you tied to the analog channels? Couoldn't you drive your signal to a counter input? This will make frequency measurement an easy task.

[Joncombat]

I'm not familiar with this card.  It would be nice in NI had a few CVI examples on how to wire/program the card.  You would think NI would have a simple Frequency measurement function to handle the measurement on an Analog input channel.  The documentation indicated anolog inputs and then that some of them are ctr inputs?  its a little confusing!

[RobertoBozzolo]

Your card have both analog inputs and counter inputs; they behave differently and for each of them there is a set of examples that explain the basic measurement types together with cabling.

Search with the example finder (Help >> Find examples... menu item) with "counter/timer" keyword and you'll find the examples you are looking for. Also looking for "frequency" drives you to the same examples.

[dcl9000]

Have you tried the example projects "Measure Frequency" and "Measure Voltage" in "Analog In" folder?