MOTM

Both are valid options.  There's room for an Int/Ext switch... :)

George
----- Original Message -----
From: Richard Brewster <pugix@...>
To: <motm@yahoogroups.com>; <media.nai@...>
Sent: Tuesday, November 12, 2002 7:03 PM
Subject: Re: [motm] Adding CLK OUT to MOTM-101?


> > >But I chose to bring out the signal originating at pin 7 of U7B,
> > >which is the comparator that generates the clock from the
> > >external input (normalled from the INTCLK).  That way the clock out is
> > >>integrated with the module.  It yields the signal that is currently
> > >>triggering the S&H, whatever the source. Of course if you are not
using
> > >the >S&H output, you can still use the clock out.
> >
> > If you are using the external input, wouldn't you already have the
clock??
>
> Not necessarily.  An internal comparator, U7B, processes the external
input,
> which could be any shape waveform, and turns it into a pulse.  My clock
out
> mod provides access to that processed input, which is the same timing
signal
> the S&H gets internally.  If the external input were a pulse waveshape to
> begin with, yes, the clock out would be the same waveshape as the external
> input.
>
> Another benefit to bringing out the comparator-processed external input is
> that you don't need a multiple to drive something else from the external
> clock.
>
> >
> > If the internal clock is normalled to the external clock input (which I
> > pressume you mean by a switched jack), couldn't you simply tap either
> > signal off the jack??
> >
> Yes, but you would not obtain the processing afforded by the comparator.
>
> > If I do this mod, I'd have it so the clock out is always the internal
> clock.
> >
> That's a valid option.  I preferred the comparator output, both for the
> processing and for integration with the S&H.  The nice thing about a mod
is
> that you can do it your own way!
>
> -Richard Brewster