semi-period counter - Chief Delphi

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semi-period counter

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15-08-2010, 13:35

jhersh

National Instruments

AKA: Joe Hershberger

FRC #2468 (Appreciate)

Team Role: Mentor

Join Date: May 2008

Rookie Year: 1997

Location: Austin, TX

Posts: 1,006

Re: semi-period counter

Quote:

Originally Posted by kamocat

Well, I either found the accuracy of the counter, or (more likely) I found the accuracy of the Digital Output "Pulse" function. It seems to be about 8 milliseconds longer than I tell it to be.
The Maxbotix Sonar sends a pulse width of distance (in) * 147 microseconds.

Anyways, for now I'll just use Analog like usual, but I'd still like to get more info on the accuracy of the semi-period counter.

I don't have any idea what your test is, but it didn't get anywhere near the correct results. Please try to describe your test.

-Joe

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