Tim,

I would like some detail, not being that savvy in these things.

regards



David Salter

Tel: +44 20 7542 2402
Mob: +44 7990562402
Fax: +44 20 7542 2699

-----Original Message-----
From: Tim Stinchcombe
[mailto: timothy@... ]
Sent: 30 May 2003 19:52
To: Doepfer_a100@yahoogroups.com
Subject: 1 Modified my A-117 Digital Noise
Generator


Hi list,
Having despaired last night at not being able to clock my
A-
117 digital noise module with my A-111, this morning I took
penknife
and soldering iron to it. I have 'reconfigured' it, moving one
of the
Schmitt triggers from being after the internal clock but before
the
input, to _after_ the input. It now 'squares up' the incoming
clock
signal immediately before passing it to the shift register
generating
the noise. The upshot of this is is now I can clock it with just

about any oscillator: whatever it was about my A-111 output it
didn't
like before (even the square wave output), it will now happily
run
from any of the outputs; previously if I tried it with an A-110
it
would invariably settle into a weird, (non-noisy) steady
oscillation
state - now it runs noise-like as I want it to. In fact it will
run
from any attenuated sine wave as long as it is greater than
about +/-
1V in amplitude.

The modification requires cutting 4 tracks and adding 4 straps
(and
is moderately fiddly). If anyone else has been experiencing this

frustration, and wants to know the details, let me know and I
shall
write some instructions and post them (and if I can persuade my
mate
with the digital camera to visit and take a few snaps of it,
post a
few pictures too).

Cheers,
Tim



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