ASM-1 slot that says leave out

[Magnus Danielson]

From: Nicholas Pelkey <njpguy at icqmail.com>
Subject: ASM-1 slot that says leave out
Date: 6 Jan 2001 13:40:03 -0800

Hi!

> I'm finally getting off my duff and assembling my ASM-1.  Its
> embaressing how long I've had it and the parts.

Ah, we've seen that before amongst others... ;)

> I couldn't help but notice upon close examination of the board that
> in the VCO in the square out path there are a couple solder holes
> and the tracing for a resistor or cap... Thats normal, but on the
> layout it says to leave empty.  Any info. on this would be great.

OK. Waaay back in time when Gene did the PCB layout, he fixed a few
minor things and added a few components which never was backannotated
to the schematic. What you found there is an series-resistor which
follows the resistor-divider on the squarewave output. On the
solderside there is a trace shorting this resistor out. If you want a
series resistor, you need to cut that trace.

> Could I stick a pot here or do I need to add a resistor first.  Or
> is this a spot for a jumper?

You can safely leave this unstuffed. Things will work anyway. It's
just an undocumented feature ;)

Hoy! There's still ASM-1 support online ;)

PS. The reason I can quickly is that I still have a naked ASM-1 PCB
which I haven't got around to build. So I do think I know what you are
talking about ;)

Cheers,
Magnus