export waveform to excel

[GerdW]

Hi Emna,

right now I'm limited to LV2017. Please attach a downconverted version of your VI…

[johntrich1971]

Change your X-Axis scale from absolute time to relative time. 

[Emna20]

Hi GerdW (Knight of NI) , 

you find below  the program ( i use save to previous version 17.0 ) .

[GerdW · Accepted solution]

Hi Emna,

don't use ExpressVIs to reach your goals:

[Emna20]

Hi GerdW ,

thank you very much ( you program it works )

i want to aske you if i change the Sine Wave with the cDAQmx it works or note ? (see below ) 

and what about exporting the signal Data to Excel ? 

Thank you for your reply .

Best regards .

[GerdW]

Hi Emna,

if i change the Sine Wave with the cDAQmx it works or note ? (see below )

Yes. (Just try it out!)

and what about exporting the signal Data to Excel ?

No problem.

You just need to program it!

(There is a palette full of Waveform functions…)

[Emna20]

Hi ,

when i use this program i obtain a graph from 0 seconds to 60 seconds but in the Excel file i only have acquisation from 0 seconds to 20 seconds .

any explanation please .( see below my program )

[GerdW]

Hi Emna,

don't use a wait function in parallel with a hardware-timed DAQmx task: let the DAQmx task do the timing!

(DAQmxRead is set to read 50k samples at a sample rate of 50kS/s, so you need 60 iterations to get data for a whole minute…)

Why don't you save the resulting waveform using a Waveform function to a file?

[Emna20]

Hi , 

i want  your help using  DAQmx to stop the acquisation after 60 seconds .

i change the program using extract Waveform to graph and with elapsed time i only end up with Excel file Containe acquisation from 0 Seconds to 20 Seconds . (see below ) 

[GerdW]

Hi Emna,

this basically is all you  need:

I don't know why you are fiddling with t0 of your resulting waveform in this very Rube-Goldberg way…

(Ofcourse you need to define the channel and clear the task after the loop.)