<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=us-ascii" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.23562"></HEAD>
<BODY>
<DIV><SPAN class=684555200-21092021>Just for Ss and Gs, I thought I'd show you
my layout graphic for the ASR board which has the clock circuit on it.
Please see attached. Note that red traces are the +V rail
and green traces are the GND rail (and black traces are the -V
rail). The CLOCK pin of the 4024 is connected to the light blue
trace. I've also attached what I call the "Build" picture, which is what
the board actually looks like. Finally, I've attached a picture of the
actual board. Note that there is another circuit board that this one plugs
into, which has a DG333 and comparators for controlling the "Shift/Bypass"
switches on each ASR channel electronically. That's what the 3- and 4- pin
headers plug into. The 4-pin header passes through that board and connects
to the Panel PCB. This is where the clock signal comes in and out of this
board.</SPAN></DIV>
<DIV><SPAN class=684555200-21092021></SPAN> </DIV>
<DIV><SPAN class=684555200-21092021>The rail traces are a bit thicker than the
other traces. You will notice that the ground traces do not connect to
each other across the top of the board, so that the ground at the 4024 actually
comes up from the bottom. I just tried jumpering the two ground traces
temporarily with alligator clips and it had no effect (and why should
it?).</SPAN></DIV>
<DIV><SPAN class=684555200-21092021></SPAN> </DIV>
<DIV><SPAN class=684555200-21092021>Also, I should mention that when the ASR is
being clocked by an external LFO, the CD4024BE is clocking on the positive edge
only. However, when the Manual clocking switch is used, the CD4024BE is
clocking on both edges. The clock signal at the CLOCK pin looks identical
in either case. The manual clocking switch is connected to the +V and GND
rails, and is fed to the comparator through a 1k resistor, whereas the clock
input jack is connected through a 10k resistor. Why any of this should
have an effect is beyond me. This, for me, is now more or less in the
realm of the supernatural, in terms of my ability to understand
it.</SPAN></DIV></BODY></HTML>