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waveform requested invalid

I am using labveiw to control scope, Some time I got error "waveform requested invalid" "Waveform data not available, curv"

"query interrupted" "No event to report, query empty"

Please give advice? 

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Hi,

 

Are you using NI-Scope VIs? In addition a screenshot of your error would be helpful. Thanks!

 

Ipshita C.

National Instruments
Applications Engineer
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