[sdiy] Voyager inside pics / CV levels

[Tim Parkhurst]

> -----Original Message-----
> From: Grant Richter [mailto:grichter at asapnet.net]
> Sent: Wednesday, July 06, 2005 11:42 AM
> To: Tim Parkhurst
> Cc: 'Roy J. Tellason'; SynthDIY
> Subject: Re: [sdiy] Voyager inside pics
> 
> I believe the Voyager uses 5 volt levels. Probably to save cost on
> the switches.
> 
> If someone knows more about the Voyager signal levels through the
> breakout box, please correct me.
> 
**********************************************
Hey Grant,

Yes, looks like 5 volt levels throughout. Quoting from the Voyager User's
Manual (page 77):
________________
The following is technical information about the VX-351's outputs.
TOUCH
X: -5 to +5V, 330 Ohm output impedance
GATE: +5V On, 0V Off; 1,000 Ohm output impedance (TTL)

PITCH: -0.85 to +2.52V... The keyboard Pitch Voltage changes by 0.935 volts
per octave; 330 Ohm output impedance
VEL: -5 to +5V, 330 Ohm output impedance
________________

The Voyage User's Manual (includes VX-351 instructions and specs) can be
downloaded from Moog at
http://www.moogmusic.com/detail.php?product_manuals=1&modify=true&main_produ
ct_id=48

Watch for that word wrap! FYI - Page 29 lists the Voyager Gate level (+5V),
page 34 shows the range for the LFO CV Mod input, and page 37 lists some
other CV input levels. So it looks like the Voyager is probably chock full
of 4066s or 4051/2/3s or even 4067s. And by the way, has anybody used a
Voyager to drive another analog (1V/octave) synth? What's the deal with
0.935 volts per octave?



Tim (alllllmost 1 Volt per octave) Servo

"Imagination is more important than knowledge." - Albert Einstein


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