Digital I/O

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ni usb 6001 digital input

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I'm trying to simulate a 72Hz digital signal from an external circuit. Attached below is the block diagram I'm using. I was originally going to use the Waveform Graph to view the signal but data types were different so I ended up using a digital waveform graph vi. Once I run the simulation, there was nothing in the graph. Please Help. I am using a USB 6001 DAQ device. 

 

BTW, I tried to create a task in the DAQ Assistant but was only successful when the acquisition mode was set to 1 sample (On demand). When performing what I desired which was continuous sampling, an error occurred.

 

Error -200077

Requested value is not a supported vaalue for this property. The property value may be invalid because it conflicts with another property.

 

Property: SampTimingType

Requested Value: Sample Clock

Possible Values: On demand

 

Basically, what I want is to see the square signal in the waveform graph and perform some processing with the signal. 

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Accepted by topic author meere

nevermind. I already solved the problem. I used Analog input instead of digital 

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