Why is incorrect dt when TDMS log file is exported to ASCII text?

In short, we are 6 hours recordings 4096 samples per second on 6 channels. We use a different program to analyze the electrical data and so we export to Ascii text. However, when import us the dt that is listed in the file Ascii text file won't and if I would like to convert it to the samples per second, it would be more than 4098.2! As synchronize us this data to another system, it is imperative that we ensure that the sampling time are correct. Anyone know why we would get an incorrect dt indicated in the ascii file?

If I go back to the Module acquire DAQmx in Signal Express that we used to get the data, I see that the rate shown is 4096.0

Clampfit of Axon INstruments allows us to import the data of Signal acquired Express.

Potentially, we're looking at a few days or weeks to convert data because of this gap if anyone can shed some light on the view I would be very grateful.

Kind regards

SMB

Take a look at the following documents, I think the first thing to check is that your card can achieve this sampling rate. If it is possible, then we can look into if it is for a reason, adjusting, or if something in the conversion is making data appear different.

What sample rate is my DAQ able to map: http://digital.ni.com/public.nsf/allkb/4BBE1409700F6CE686256E9200652F6B

How is the actual rate determined analysis: http://digital.ni.com/public.nsf/allkb/5782F1B396474BAF86256A1D00572D6E?OpenDocument

Have you already been successful in this conversion to ASCII before?

-will.i.am10

Tags: NI Products

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