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Member
gupta.nitesh87
Posts: 8
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error 20020

 i need to read from a database of ecg signal that is attached below.
this signal is required for further processing in analog form. i m using
read from spreadsheet file.vi for the read purpose. when the signal is
filtered, i m getting
Error -20020 occurred at Filter -> read from file.vi
"
Possible reason(s):

Analysis:  The cut-off frequency, fc, must meet:  0 <= fc <= fs/2.
the cut off frequency of the filter is 5Hz, while the database has a sampling frequency of
200 samples/ sec.
can you help

Knight of NI
RavensFan
Posts: 16,072
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Re: error 20020

I would suggest you post your VI.  It sounds like the error has to do with a filter function you are using.  While it is good to have your data, I don't think your problem is going to be in the text file you posted.:smileywink:
Member
gupta.nitesh87
Posts: 8
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Re: error 20020

i m attaching the VI we designed. our problem is to take the signal to the filter and then process it further.
 
Knight of NI
Dennis_Knutson
Posts: 34,645
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Re: error 20020

Your biggest problem is that you have nothing at all wired to the filter function.:smileyvery-happy:

Instead of using the bundle function and wiring that to the graph, use the Build Waveform function with Y and dt inputs and wire that to both the graph and filter.

Member
Sujana
Posts: 3
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Re: error 20020

Data Sampling Frequency : 128 Hz

Cut off Frequency (max value) : 52 Hz

But i am still getting d same error!

Can anyone help me?