Near Simultaneous Output and Reading

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liemph
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Near Simultaneous Output and Reading

Post by liemph » Fri May 02, 2003 2:53 am

I use VB for collecting and displaying the measurement results from my DrDaq. The following may be a stupid question. Using the provided pico DLL, could I send a 1 ms pulse to the digital output while making a fast mode measurement (i.e. simultaneous output and reading) to see the response of a circuit to the pulse ? :?:

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matthew
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Post by matthew » Fri May 02, 2003 8:11 am

Hi,

The digital out is a direct connection from a parallel port pin, therefore its response depends on your PC and windows.

I wouldn't recommend using it for timing critical applications. Also ... because single processor PCs are ultimately single threaded in terms of execution order, you would stop fast-sampling whilst the digital out was changing state. This could affect your results by leaving gaps in your data.

Best Regards,
Matt Everett

Pico Software Engineer

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