Doepfer CTM64 Contact to Midi Interface (main board) - Manual (Page 11)

CTM64 Version 4 - User's Guide Page 11
Mode (jumper 5)
Jumper 5 installed: note mode (factory setting)
Jumper 5 removed: program change mode
Note/program offset (jumper 8)
Jumper 8 installed: offset = 0 (factory setting)
Jumper 8 removed: offset=36 (in note mode), resp. 64 (in program mode)
Octave offset (jumper 6/7, working only in note mode )
Jumper 6 installed: offset = - 12 semitones (minus one octave) (factory setting)
Jumper 6 removed: offset = 0 (no transposition)
Jumper 7 installed: offset = + 12 semitones (plus one octave) (factory setting)
Jumper 7 removed: offset = 0 (no transposition)
If both jumpers are installed there is no transposition (+12-12 = 0).
Control LED (4)
The LED is used to display any MIDI out activity. After power on the LED is permanently on. As soon
as a MIDI out event occurs the LED turns off for a short time thus indicating MIDI activity.
Factory setting of the jumpers
In the factory all jumpers of JP5 are installed. This means: MIDI channel 1, note mode, offset = 0, no
transpose ( +12 - 12 = 0). The potentiometer connectors ST1...ST4 are equipped with jumpers too so
that the inputs are connected to GND (i.e. no function).