DIAL ELECTRONIC Universal Midi Control Electronics for rotary encoders Installation and User's Guide © 2005 by Doepfer Musikelektronik
Electrical safety / EMC compatibility DIAL ELECTRONIC (abbreviated "DE" in the following) is a so-called OEM product (OEM original equipment manufacturer) that cannot be used independently but has to be combined with additional electrical or electronical equipment to become a working device (e.g. rotary encoders, switches, LEDs, power supply, case/housing). The manufacturer of DE does not know the final assembly of the complete device in which the DE is used as a part of the complete device.
Table of contents Electrical safety / EMC compatibility ........................................................................................2 Warranty...................................................................................................................................2 Table of contents......................................................................................................................3 Introduction............................................................................
Introduction • • • • • • • • • • • • • Dial Electronic (abbreviation: "DE" in the following) is an universal electronics DIY kit to built your own MIDI control box with 16 rotary encoders (even called alpha dials, endless potentiometers or similar). DE generates 16 different MIDI messages on different (or even the same) MIDI channels. The available Midi messages are described in the Pocket Dial manual.
Connections (5) connector for the switches / buttons (JP1) (4) connectors for 16 rotary encoders (ST1...
Power Supply (1) DE does not have a built-in power supply. Instead it uses a plug-in type external power supply (AC adapter). One reason for this feature is electrical safety. Keeping danger voltages (main) out of the DE increases the electrical safety. Therefore an external power supply of high quality and safety should be used. If DE is used in Germany the external power supply has to be VDE approved.
Connectors for the 16 rotary encoders (4) For the connection of 16 rotary encoders the 16 single row pin headers ST1...ST16 (3 pins each) are available. A rotary encoder has three terminals available: common terminal, output 1 and output 2. When operating the encoder the outputs 1 and 2 are shortened to the common terminal in a certain sequence (different for right and left rotation). In the end an encoder is nothing but two switches with one common terminal.
Connector for 6 control switches (5) The pin header JP1 is used to connect 6 control switches (momentary switches, buttons). This is the pin out of JP1 (refer to the picture on page 6): T1a T1b T2a T2b T3a T3b Each of the 6 switches (labelled T1 ... T6) has two terminals (a and b) that have to be connected to the corresponding pins of the pin header. The first switch has to be connected to the pins T1a and T1b, the second to T2a and T2b and so on. Simple momentary switches (open at rest) are used.
It has to be pointed out that we cannot take back DE modules with solder residues on the pin headers ! Therefore we recommed the usage of female for the encoders, switches and LEDs. The functions of the switches and LEDs is the same as for Pocket Dial. Please refer to the Pocket Dial manual that is included with the DE delivery. DIP Switches (7) The positions of the 8 switches of SW1 (7) determine the number of the preset that is called up during power on. Up to 128 different presets are available.
Check list In case that your DE installation does not work at the first go please check the following points: • Is the power supply working correctly ? Provided that the 4 LEDs are connected to JP2 they have to light up one after the other and then LED #1 has to light up only.
Extent of delivery The DE delivery contains the following parts: • • • • Dial Electronic pc board, assembled and tested Power Supply (230V mains voltage, European type mains plug, output voltage range 7...12V, current min. 100 mA) included only for shipments within Germany, for shipments outside Germany please contact your local representative or dealer Dial Electronic user's guide (i.e.
Doepfer Musikelektronik www.doepfer.