Dco-Mode And Auto Tuning - MFB SYNTH PRO Operating Manual

The TUNE function of VCO 1 sets the overall tuning of the synthesizer.
Tune continuously changes the tuning by ±4 semitones.
For VCO 2 and VCO 3, the INTERVAL control has a range of ±1
octave to vary the tuning in regard to TUNE.
A fine tuning within a range of ±63 cent can be carried out per VCO
using the DTUNE 1/2/3 function in the MISC section. To do so, press
the corresponding button (the corresponding LED will be lit red) and
set the value using the VALUE encoder. Leave the DTUNE 1/2/3
menu by pressing the corresponding button again (LED turns off).

DCO-mode and Auto Tuning

By pressing the button DCO/TUNE, the oscillators can be set to work
in DCO-mode. This is a global function which applies to all oscillators.
With DCO-mode being active, the corresponding LED is lit red. In this
operating mode the oscillators' tuning is controlled digitally. The
pitches are defined exactly which is advantageous with
temperature changes of the environment. However, DCO-mode will
also change the sound of the sync function and the beating
between the oscillators. FM is not possible when in DCO-mode.
By pressing and holding the DCO/TUNE button for two seconds,
SYNTH PRO carries out an automatic tuning procedure of its
oscillators. This process will take a few moments and is visualized by
the LEDs of the MISC-section switching, representing the voices.
Hint: To take advantage of the auto tune function, SYNTH PRO
should have reached its operating temperature. Using this function
immediately after switching on the device can result in detuning
because the operating temperature has not yet been reached.
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