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Counter Output NI sample code not working..

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Counter Output NI sample code not working..

Hi, 

 

I tried to run a sample program given in the following directory,

 

\National Instruments\NI-DAQ\Examples\DAQmx ANSI C\Counter\Generate Pulse\Dig Pulse Train-Cont-Buff-Implicit,

 

which is a buffered pulse output program with pre-determined duty ratios.

However, an error says that the counter writing function cannot be started before the task is started.

 

I am using USB-6281 M-series DAQ. Is this sample program not suitable to my device?

How can I then use such pre-determined duty arrays or real-time duty updates?

 

I am really looking forward to hearing from you..

 

Thank you.

 

Byeong-uk, Im.

 

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