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[DPRG] Frequency Counter Question

Subject: [DPRG] Frequency Counter Question
From: rten at new.metronet.com rten at new.metronet.com
Date: Mon Sep 29 12:57:00 CDT 2003

Good analysis!
Ralph

On Mon, 29 Sep 2003, Clay Timmons wrote:

>
> Earl,
>
> All your math looks right to me
>
> 1MZ signal at 10usec gate = 10,000 counts
>
> 10^6 cycles/second * 10^-3 second = 10,000
>
> But you are getting way more counts than that.
> Are you counters counting on the rising edge, falling edge or both edges?
> Also make sure that the signal going into the counters is a clean rail to rail swing with no bounces or noise.
>
> Later,
>
> -Clay-
>
> > But then the big question is....
> > Does this sound right or have I gone insane at the moment?
> > I amgetting something like 49,652 for a count at 1mhz (really really
> > close though something like 1.00034565mhz). Maybe I have the timers set
> > wrong.
> > Or do I?
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