Not sure if it helps anybody (there is discussion here about sending V/Oct as well as calibrating the Analog board for V/Octave coming into a Voyager or Old School) but I had my Old School mod'ed last year and Moog Support essentially pulled R47 (which is a 100K resistor from the factory) and replaced it with a 90K resistor and a pot/trimmer, then calibrated it to precisely 1V per octave.
This is to address the incoming pitch CV jack and is required if driven by a CV keyboard such as a Minibrute, or a sequencer, etc.
Since the Voyager and Old School have the same Analog board in common, I would assume the same would apply and that the Voyager does not have any software controls to adjust the voltage.
I have a Little Phatty Tribute also and I've been told that these original synths had a pot for the incoming Pitch CV, while the Stage and Stage II do not. I have not confirmed this, however; but if you find the point on the board, there certainly is a work-around.
'76 Minimoog, Moog Voyager Select, Taurus 3, Opus 3; Oberheim Son of 2-voice+2; Sequential ProOne; Juno 106; 48 of MU Modular; Kurzweil 250; Hammond M3; Fender '75 Jazz, G'shop Precision, Tony Franklin Fretless, Hoppus, Roadworn 60's Jazz; MF101,104M,105M