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Date Posted: 04:17:46 01/21/03 Tue
Author: Potter
Subject: Re: Rogers (Toronto) setup
In reply to: Pokey 's message, "Re: Rogers (Toronto) setup" on 23:13:05 01/20/03 Mon

That sounds fairly close - the pulses should be about 1-2uS wide depending on the size of the edge it's responding to. The first hurdle is to return from the lockline routine close enough to being in sync so that lock will be achieved in about 4 frames otherwise the code jumps back to the lockline routine to try again.
You really need a good cro to see what's going on IE that the code is looking for edges of the correct polarity etc

>I connected my period/duty cycle meter and it shows
>anywhere from 2-50usec periods with low duty cycles
>(max was ~30% but most were under 10%). This is what
>I expected as the scope images in the theory
>description shows short pulses from the 393. Since I
>don't have a scope I don't know how clean they are or
>if they are in the right spot. My meter uses an f870
>with a 16x2 LCD to tell me what it calculates.

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