User Manual
25 MODEL D User Manual
9. On your external keyboard, keep holding the C6 key.
10. Listen carefully, and adjust the OSC SW trimpot on the PCB, for zero beats
between OSC1 (Range=2') and OSC2 (Range=8').
OSC3 Scale Adjustment
OSC3 Range Adjustment
Octave Adjustment
OSC1 Scale Adjustment
OSC1 Range Adjustment
OSC2 Range Adjustment
OSC2 Scale Adjustment
Highest A5
Lowest A2
Highest C6
11. Repeat step 8 with dierent settings of the RANGE knob, and repeat steps 9
and 10 until both oscillators are in tune with each other at all settings of the
Octave RANGE knob.
12. This completes the Octave Range Calibration.
13. If you do not want to do any other calibrations, turn o the MODEL D,
check the internal cables are securely connected, and secure its front panel
assembly back onto the chassis using the 8 screws.
A2 Low Value A5 High Value
Oscillator Calibration
C6 Octave Calibration