Oscillator 2 and 3:
1.
Repeat the procedure as for Oscillator 1, using one of the other oscillators as reference.
MASTER SCALE
This procedure tunes the entire instrument. The object is to calibrate CV1 and MASTER CV
(rear panel) for 1 Volt/octave.
If the oscillators correspond internally over 4-5 octaves any one of them may be used for a
reference tone, otherwise an external source must be used.
Perform the calibration using the MASTER SCALE trim potentiometer.
MASTER ANALOG CV
An external analog control voltage from, e.g. an analog synthesizer or other instrument with an
analog control voltage output can control the instrument.
Perform the calibration using the MASTER ANALOG CV trim potentiometer on the rear panel.
NOTE:
All the trim potentiometers have limited trim ranges (about 5%..)
external control voltage must not deviate by more than 2-3% from 1 Volt/octave.
Therefore the source of
25
OSCILLATOR RANGE
Oscillator 1:
1.
On MASTER CV set switch for OSC1 and OSC2 to ON.
2.
On OSC 1 and OSC 2 set RANGE switch and TUNE to position 0.
3.
Press any key on the keyboard.
4.
Carefully adjust TUNE on Oscillator 1 until both oscillators have the same frequency and
minimum phase shift.
5.
Step up the RANGE switch on Oscillator 1 and adjust trim potentiometer OSC1, RANGE for
correct frequency. When correctly adjusted the Oscillator 1 frequency must be 1, 2, 3, 4,…
etc. octaves higher than Oscillator 2 (i.e. exact multiples of one octave).
Oscillator 2 and 3:
Repeat the procedure as for Oscillator 1, using one of the other oscillators as reference.
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