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Date Posted: 19:26:42 11/20/01 Tue
Author: LCS
Subject: Re: Sakmann - Canton 4.2 will not lock - HELP
In reply to: sakman 's message, "Re: S.O.S. - Canton 4.2 will not lock - HELP" on 12:04:05 11/20/01 Tue

Thanks, Sakmann.

Now tell me, is it OK for the lock indicating
led never to light up?

I found AC at the inputs RB1, RB2 & RB3 (LBD,
PED & NED), but the other leads of the PIC are
as dead as a door knob. Is that correct?

And is it necessary for the external VCO to be
controlled by the PIC, or can it just deliver
a stable 20Mhz clock at pin 16?
I left RA0 (pin 17) open.

Luiz Cesar



>Hey lcs,
>
>The edge detector mod for the 4.2 was recommended by
>Phil.
>
>The mod is to change R3 and R6 from 1K to 4.7K.
>
>Without the mod, you may need to turn the video pot
>high to get a lock.
>
>Late!

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