Doepfer Pocket Electronic - Manual (Page 7)

User's Guide Pocket Electronic Page 7
Midi In Socket (3)
The PE features a Midi input. This input may be connected to another Midi device (e.g. Midi
keyboard). The incoming Midi data are merged to the data generated by PE. The Midi input may
be used as well for daisy-chaining several PE. The Midi input of PE is not suitable for large
amounts of Midi data (e.g. SysEx strings or Midi messages coming from an computer
sequencer) as the PE has only a small Midi in buffer. In case of large amounts of incoming Midi
data loss or delay of data may occur.
The Midi input is also required when PE is programmed with the editor software. In this case the
Midi input of PE has to be connected to the Midi output of the computer on which the editor
program is running. The Midi output of PE has to be connected to the Midi input of the
computer. Details can be found in the manual of the editor program.
If the merge feature of the PE is not required and the programming option is not used the Midi
input is left open.
Connectors for the 16 controls (4)
The two pin headers JP1 and JP2 are used to connect the controls. Both pin headers have
available these signals: GND, +5V and 8 control voltage inputs (range 0...+5V).
Remark: In the following the terms GND (= abbreviation of ground) and 0V (zero volts) are used
synonymous.
The control voltages are normally generated by rotary or fader potentiometers that are
connected between GND and +5V. In this case the wiper of the potentiometers outputs a
voltage in the range 0...+5V while the potentiometer is operated. Another possibility is the
connection of momentary switches or toggle switches.
The lower part of the sketch on the next page shows the pinout of the two pin headers JP1 and
JP2 (same orientation as the picture on page 5). The pins labelled 1 ... 16 are the 16 control
voltage inputs.
Normally two 10 pin female connectors with ribbon cables are plugged to the pin headers JP1
and JP2. The female connectors with ribbon cables are included with the PE. The controls (e.g.
potentiometers, switches) are soldered to the open ends of the ribbon cable.
The upper part of the sketch shows the pinout of the 10 wires of the ribbon cables. We strictly
recommend this type of wiring but not to solder the wires directly to the pin headers JP1 and
JP2. Usage of the ribbon cables with female connectors allows to disconnect the controls from
the electronics very easily.