47 | Calibration
WHAT YOU WILL NEED
1. A wide ranging and accurate tuner
2. The included calibration tool
3. A 1V/Octave source (one that is confirmed to be well-calibrated—no more
than 1mV error per octave)
KEYBOARD CALIBRATION
1. Make sure Mavis has been powered on for at least 15 minutes, and that it is in a place
where the temperature will not change drastically while performing the calibration.
2. Remove all patch cables from the patchbay.
3. Set the panel settings to their default settings (page 14).
4. Connect the VCO output jack on the patchbay to an accurate, high-quality tuner.
5. Set the PITCH control precisely to center position.
6. Make sure the PITCH MOD AMOUNT control is turned completely counter-clockwise.
7. Press the lowest key on the keyboard (KB CV outputs 0 V).
8. Adjust the PITCH knob until the tuner registers the nearest “in-tune” note.
9. Press the highest key on the keyboard.
10. The Tuner should now display a note one octave higher than the note heard in
Step 8. If necessary, make small adjustments to the trimpot to the right of the
KB SCALE knob.
11. Repeat Steps 7–10, making small adjustments only if necessary to tighten up
your calibration.
1V/OCTAVE CALIBRATION
1. Connect a precision 1V/Octave source outputting 0 V to the 1V/OCT input jack.
2. Play the lowest key on the Mavis keyboard and adjust the PITCH knob until the
tuner registers the nearest “in-tune” note.
3. Switch the 0 V source to 2 V.
4. The tuner should display two octaves above Step 2. If necessary, make small
adjustments to the trimpot to the right of the PITCH knob.
5. Repeat Steps 2–4, making small adjustments only if necessary to tighten up
your calibration.
Calibration
Mavis comes to you fully calibrated. However, because it is designed to play with external
analog gear, advanced users may want to calibrate Mavis to another instrument. In these
cases, access holes are available to conveniently calibrate the 1V/OCT and KEYBOARD
without opening the unit.
A calibration tool has been included with Mavis in the event that you need to tune the
instrument to the analog or modular gear in your setup. Keep in mind that the internal tuning
trimpots are not designed for unlimited use. ONLY calibrate when it is absolutely necessary.
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