What are the units of the DAQmx meter?

Hello

I created this VI and several others like it, a few months ago, but I forgot some of what I have at the time.  I believe that this VI should measure period, using the counter on the chassis of the acquisition of data.  Can someone tell me the units of the measurement period?  I think it's seconds, but I am trying to find a way to understand this!  The period values are generated by the DAQmx READ function in the WHILE loop.  What units that work out in the table?  What are the units of the elements of the array, essentially?  See the attached VI.

In addition, how do you know?  I opened the DETAILED HELP for the DAQmx Read (minimum 1 D NSamp DBL) shows the VI but, I can't find anything on the units of data coming out of the Terminal marked data with the orange wire, which is actually an array of periods, and we take the average of the most recent measures period 15 or more.

I had a suggestion months ago for a line OR manual containing a description of the measures of buffering EdgeCounting, but when I went to find it, the link had been changed by NEITHER, so I find that manual, but I think the answer is probably there because I remember this manual is very helpful when I've done it before.

Thanks for the tips.

HI dav2010,

When you create a virtual channel, you must specify the units of the task of counter uses.  There are several options that are listed in help here:

http://zone.NI.com/reference/en-XX/help/370469AA-01/lvdaqmx/mxcreatechannel/#DAQmxCreateChannel%28CI...

I'm not on a computer with LabVIEW now, but I think the default should be ticks, which is the number of ticks the time base of your device.  You can find this information in your hardware specifications.

Kind regards

Tags: NI Hardware

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