> >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