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Doepfer

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Re: voltage range of all the a100 CV cources???

2002-09-23 by Tim Stinchcombe

Hi Bakis and everyone,
	I've recently been looking at messages on the web, rather 
than receiving emails (due to my change of job and hence loss of 
daily email/internet access), so I don't feel I've been persecuted by 
unwanted spam, and am quite happy to continue contributing when I 
feel I can. (Also I shall probably continue just looking at the web 
page rather than going back to individual emails since my new PC 
and `always on' internet connection is so flippin' fast there doesn't 
seem any point in switching back!). So, here are some of the voltages 
out of the modules I have:

A110 sine, pulse +/- 5.5V(there's no coupling capacitor, so stays 
this no matter what pulse width set to), tri +/- 7V, saw +/-5V
A111 pulse +/- 4.5V (output is AC coupled, so this shifts to make DC 
level zero, depending on pulse width), saw, tri +/- 3V, sine +/- 4.5V
A117 digital noise 0 – 12V, oscillator outputs (very) approx +/- 5V
A119 gate out 0 – 9V
A129/3 CV out (nothing in) 0 – 5.5V (daisy-chaining two sections can 
add the same to this, to get up to 11V out)
A140 envelope 0 – 7V
A141 envelope 0 – 6V
A145 saw, sine, square +/- 4.5V, triangle +/- 5V
A146 bipolar pulse +/- 4.5V, unipolar pulse 0 – 8V, variable tri +/- 
4V
A147 tri +/- 6V, sine +/- 5.5V, square +/- 5V, saw (unipolar) 0 – 7V
A156 trigger out 0 – 5V
A160/161 clock outputs 0 – 12V
A163 divided output +/- 2.5V; (DC output if capacitor shorted 0 – 5V)
A174: X/Y offset set to 0, full range of joystick gives approx  -4V 
to +4V; joystick central, turning X or Y offset gives approx the 
same, -4V to 4V (hence you can get 0 – 8V out etc.)
A179 gate 0 – 9V, CV out swings through 12V, so -12V – 0 to 0 – 12V 
possible depending on offset setting
A190 gate 0 – 9V

Some of these readings are quite rough and ready, and there may 
obviously be some variation from module to module; also some VCO/LFO 
outputs change with frequency.

Maybe other members can supply ranges for those modules I don't have, 
e.g. A176 etc.

When time allows I'm still trying to "fill in the gaps" in my 
knowledge, so that I can understand some of the finer points of 
oscillator behaviour (particularly the quad osc in the A126 frequency 
shifter). I'm also looking to buy an analogue simulation package such 
as Multisim or PSpice, so that'll help – I'll keep you posted of 
anything I turn up!

Tim

Ha! Joe beat me by about 30 seconds, but we seem to be pretty much in 
agreement! – Tim (and I don't have a black pointy hat either…)


--- In Doepfer_a100@y..., "Joe Buechler" <buechlerjoe@t...> wrote:
> According to my cheapo voltmeter (which has an analog dial hehe):
> 
> A165: 0 to 9V
> A160: 0 to 10V
> A147 -4.5 to +4.5V
> A155 Gate: 0 to 10V
> A155 CV top: 0 to 4V
> A155 CV bottom: 0 to 7V
> A190 Gate: 0 to 9V
> A191 LFO: -5 to +5V
> A191 CV: 0 to 5V
> A141: 0 to 6V
> A162: 0 to 10V
> A140: 0 to 7V
> A119 Gate: 0 to 8V
> A119 Env: 0 to 8.5V
> A176: 0 to 5.5V
> A145: -5 to +5V
> 
> I seem to recall Timothy did a more comprehensive list earlier when 
> the A150 bleed-thru issue was being discussed.
> 
> Joe (not a wizard)
>

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