Buchla 200e series, User Manual

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A module decodes the pitch (key #) contained in note-on messages originated
by the 225e and arriving on its bus. It also responds to pitch bend messages
and to may respond to fine tuning messages as follows:
To respond to MIDI fine tuning messages, the “Ft” field in the 225e’s display
must contain something other than a default value of “An” for the bus of
interest (buses A – D). This fine tune data is in cents (a cent is 1% of a semi-
tone), and can range from –49 cents to +49 cents. It can be set for each bus,
and therefore for each of four oscillators.
Note that if fine tuning is enabled for a particular oscillator, that oscillator’s
pitch knob will be incapacitated, as will its F.M. input and control voltage input.
Pitch will be completely determined by MIDI signals
.
So when you wonder why your oscillators tuning controls seem dead, check
the 225e’s fine tuning field for the bus that’s driving your oscillator. You need
an “An” in that field to enable analog control.
As in all 200e series modules, the settings of pots and switches can be locally
stored and subsequently recalled by the model 225e or 206e preset manager.
To connect or disconnect this module from the central library function, push
the remote switch. A lighted red LED signifies a connection.
(Generally unneeded is a trim procedure for the input potentiometers on the
261e. It eliminates the slight dependency of frequency versus knob setting for
both the f.m. modulation knobs and the c.v. multiplier knobs. To invoke this
procedure, turn all four knobs to their maximum counterclockwise positions,
then press and hold the sync button for about 5 seconds.)