dr110 sync?

[Rob]

-----Original Message-----
From: WeAreAs1 at aol.com <WeAreAs1 at aol.com>
To: pwagorn at pinc.com <pwagorn at pinc.com>; synth-diy at mailhost.bpa.nl
<synth-diy at mailhost.bpa.nl>
Date: Wednesday, July 07, 1999 4:46 PM
Subject: Re: dr110 sync?


>Hello Paul,
>
>It sounds like you simply connected the new clock signal to the internal
>clock line, but you didn't disconnect the old internal clock signal yet.
You
>need to disconnect the internal clock - you can't have two clocks coming in
>at once.  (I haven't done this mod, but this is just a general rule about
>clock signals)
>
>In a message dated 7/7/99 11:07:22 AM, you wrote:
>
><<I'm trying to do the Dr110 sync mod, and I'm having a bit of trouble.
>to start with, I'm trying to send the DINsync clock strainght into the
clock
>in of the dr110 (4th lead from left going into the digital board)
>without dividing it down.... I assume DINsync is running at 24ppq, and it
>needs to be divided to 12ppq...
>
>anyways, I'm not worried about dividing the clock yet, cause I can't even
>get it to sync (at double speed) to the output of the din cable.
>I'm grounding casing of the Din lead to a ground on the dr110, and taking
>the pin on the far left (while looking straight at the jack) (I've tried
all
>the pins, btw)... and it won't sync.... it just kinda goes all over the
>place as if there was a bunch of noise in the line....
>
>anyways, any ideas?>>
>
HEHE!! There IS a BUNCH of noise on the line! :))
If you are using the alphadog mod, make sure you use a pull-up on the input
line to your divider and a decoupling cap directly (if possible) between the
power and gnd pins on the flip flop...  It might work decent to put a cap to
gnd from the input line too... A small value might help eliminate spurious
noise...

And, yes, you have to disconnect the internal clock first off, otherwise
youll have all sorts of strange sync...
Rob