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measuring waveforms through shared variables
mbhatti2000
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03-30-2006 10:12 AM
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Dear All,
I am trying to measure 4 waveforms from a signal generator, I am transferring the waveforms through a shared variable on my host.vi from the target.vi. But the signal is not coming as it is. I am attaching some screen shots, I have tried changing the parameters of the shared variable but it does seem to help. I am also confused about the options that become active when click theI check box of the "use buffering" option.
The screen shots are zipped.
Thank you very much.
Sincerely,
Munir Afzal Bhatti.
I am trying to measure 4 waveforms from a signal generator, I am transferring the waveforms through a shared variable on my host.vi from the target.vi. But the signal is not coming as it is. I am attaching some screen shots, I have tried changing the parameters of the shared variable but it does seem to help. I am also confused about the options that become active when click theI check box of the "use buffering" option.
The screen shots are zipped.
Thank you very much.
Sincerely,
Munir Afzal Bhatti.
Nick_CH
NI Employee (retired)
04-18-2006 08:45 AM
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Dear Munir Afzal Bhatti,
Could you please send me your project with the host and target VI in a zip file.
Thanks
Nicolas Pasquier | AE | National Instrument
Could you please send me your project with the host and target VI in a zip file.
Thanks
Nicolas Pasquier | AE | National Instrument
04-18-2006 10:33 AM
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Thanks a lot Nick, I have got the problem solved about the shared
variables.But maybe you could answer another question for me. I am
saving all the waveforms in .dat and .bin format. I am also able
to read the file. I want to view the waveforms from each channel in a
differnet oscilloscope. How is this possible? I am using 1D-array of
double 64-bit real-15bit precision
Thank you.
Sincerely,
Munir Afzal Bhatti.
Thank you.
Sincerely,
Munir Afzal Bhatti.
Nick_CH
NI Employee (retired)
04-18-2006 11:23 AM
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Dear Munir
Afzal Bhatti,
Yes it is
possible to view the waveform from each channel in a different scope.
You can use
the ExpressVI Select Signal as shown in the example Select Signals.vi
PS: for
example, this is work well when you use the ExpressVI ´Read from Measurement
File´ to read your data.
Best regards,
Nicolas
Pasquier | AE | National Instruments
04-18-2006 12:33 PM
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Dear Nick ,
I am sending the program in zip format including the files of the waveforms that I have saved. I used the select signal express VI but it does not seem to select the different waveforms. There are two .dat files. One contains all the 4 channels and the other contains 1 channel.
Thank you for the really fast response.
Sincerely,
Munir Afzal Bhatti.
I am sending the program in zip format including the files of the waveforms that I have saved. I used the select signal express VI but it does not seem to select the different waveforms. There are two .dat files. One contains all the 4 channels and the other contains 1 channel.
Thank you for the really fast response.
Sincerely,
Munir Afzal Bhatti.
Nick_CH
NI Employee (retired)
04-20-2006 09:35 AM
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Dear Munir Afzal Bhatti,
Just for information, this would be a new case. So, for next time, I suggest you to post a new request and to give the solution how you solve your problem “Measuring waveforms through shared variables” because it is a forum to share knowledge.By the way, you need anyway to read all channels and then to sort which one do you want to view. For that, you could use the array functions.
Best regards,
Nick_CH
