digital frequency measurement

[krivan]

Hi,

I'd like to measure the frequency of a digital input signal with my PXIe-6358.

I have found examples and codes like  Help » Find Exampels » Hardware Input and Output » DAQmx » Counter Measurements » Digital Frequency » Meas Dig Frequency-Low Freq 1 Ctr.vi

and

http://decibel.ni.com/content/docs/DOC-6271

however the problem is that this digital signal connects to one of the pins of the port0.

Is there an efficient way to measure the signal frequency directly from port0?

Thanks.

[Robert.L]

Hi Krivan

Port zero is a digital input output.

To mesure input frequency using digital input lines. There is an example on haw to do this using two counters in DAQmx.

You will also have to define the port as input as well this can be done in MAX in the test panel tab.

http://decibel.ni.com/content/docs/DOC-11420