Analogue systems

Sorry, its not the Wasp Filter, that's a Doepfer Module.  I've been 
looking at several different things.  But I believe Doepfer also uses 
10 and 16 pin interfaces.


--- In analogue_systems@yahoogroups.com, "terrymcfrench" 
<terrymcfrench@y...> wrote:
> Thanks Peter, that's exactly what I was looking for and more. I do 
> believe my PSU uses Molex connectors.  I'll be attempting to power 
up 
> a Wasp filter, which I don't think needs the 5volt supply but I'll 
> check on that.  I'm guessing, since its a ribbon cable, that there 
is 
> a red mark to indicate pin 1?  I don't have the module yet so I'll 
> have to wait and see.
> Thanks again for your response.  Very helpful tips!
> Joel
> 
> 
> 
> 
> --- In analogue_systems@yahoogroups.com, Peter Grenader 
<peter@b...> 
> wrote:
> > OK, I can answer this for you, but please *listen* closely for 
your 
> own
> > module's safety.  Depending on the shunt fold back protection of 
> your PSU,
> > getting them reversed may require you to change all of the 
> semiconductors in
> > the effected devices.  I say this only because I enjoy (for lack 
of 
> the real
> > word) dyslexia and am constantly getting things like this 
reversed.
> > 
> > The Analogue Systems modules get their power via a 16 pin dip 
> socket (IC
> > socket).  What they've done is rather clever, double-doubling up 
> the four
> > voltages in groups of four wires each of a standard ribbon cable, 
> thus
> > allowing for very easy power distribution without compromising 
the 
> current
> > limit of the comparatively small gage wires of the ribbon itself.
> > 
> > The power distribution and four pin groups on this socket are as 
> follows:
> > 
> > Group 1 (Ground): pins 1,2,16,15
> > 
> > Group 2 (+12):  pins 3, 4,14,13
> > 
> > Group 3 (+5 - see footnote): pins 5,6, 12,11
> > 
> > Group 4 (-12): pins 7,8, 10, 9
> > 
> > These pin outs are identical on all A Sys boards.  Note that +5 
> will not be
> > required on every module you purchase and you should consult A. 
Sys
> > regarding which may be effected.  All modules that have a LCD 
> display will
> > require it and there are more as well without displays.
> > 
> > If you don't wish to deal with the ribbon cable, I use what's 
> called a 'surf
> > board" connected to only one side of the DIP socket (either pins 
1 -
>  8 or 9
> > - 16), as it will allow for thicker gage wires and eliminate the 
> need to
> > double them up.  It also makes it a hell of a lot easier to 
> terminate the
> > other end to a four pin Molex, which I think you're describing 
here.
> > 
> > One thing I suggest - once you've connected it, BEFORE YOU LIGHT 
IT 
> UP, test
> > these connects at THEIR SOURCES.  Buzz out the four voltages FROM 
> THE POWER
> > SUPPLY TERMINALS to LOCATIONS ON THE MODULE'S PCBA WHERE YOU ARE 
> CERTAIN
> > THESE VOLTAGES ARE ROUTED.  For instance,  an ohm meter,  beeper 
or 
> wire
> > continuity tester from the positive 12 volt terminal on the PSU 
to 
> pin 4 of
> > any TL074 or 084 IC.  From the negative 12  terminal of the PSU 
to 
> pin 11 of
> > the same IC.  If you're getting continuity at those two places, 
you 
> can be
> > certain ground is going where it should.  If it isn't at least 
the 
> module
> > won't blow, it will just not allow for a return (current flow) 
and 
> the thing
> > simply won't turn on when power is applied.
> > 
> > On TL072's and 82's, which are quite common on A. Sys modules,. 
+12 
> is found
> > at pin 8 and -12 at pin 4.  Doing this allows you to test your 
Molex
> > termination -and- your DIP socket end at once.
> > 
> > Make sure to wear a ground strap when sniffing around PCBAs.  
There 
> could be
> > CMOS afloat, just waiting for tha fateful discharge.
> > 
> > Hope this helps.
> > 
> > - Peter
> > 
> > 
> > 
> > 
> > terrymcfrench wrote:
> > 
> > > Hi,
> > > 
> > > Does anyone have the pin setup for AS modules?  I have an 
american
> > > PSU (4 pin) but I'd like to get some AS modules.  Doepfer has 
> their
> > > pin setup on their website so you can figure out what you'd 
need 
> for
> > > the conversion, but so far I haven't been able to find that 
info 
> on
> > > the Analog Systems site.
> > > I'd appreciate any help.
> > > Thanks
> > > 
> > > 
> > > 
> > > 
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> > > 
> > > 
> > > 
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> > >