DOEPFER Midi Master Keyboard LMK2+ User's Guide USB-Version
LMK2+/USB User's Guide INDEX 1 Power Supply 2 Midi Connection 3 USB Connection 4 Connection of External Pedal and Foot Controller 5 Controls 6 OPERATING AND SECURITY INSTRUCTIONS 7 Operation of the Keyboard 7.1 Switching the Keyboard ON 7.2 Menu Structure 7.3 Description of Menus 7.3.1 PRESET 7.3.2 PROGRAM CHANGE/BANK/REALTIME 7.3.3 SPLIT 7.3.4 CHANNEL 7.3.5 TRANSPOSE 7.3.6 DYNAMIC 7.3.7 CONTROLLERS 7.3.
1. POWER SUPPLY The LMK2+ does not have a built-in power supply. Instead it uses a plug-in type external power supply (AC adapter) or is powered via USB. The LMK2+ is switched ON by • • plugging the AC adapter into a wall outlet and connecting it to the appropriate jack on the back of the case labeled 9V DC or connecting the the USB connector of the LMK2+ via a suitable cable (A-B type) to a computer with USB interface. The computer has to be able to deliver at least 200 mA current at the USB socket.
5. CONTROLS The LMK2+ features the following controls and displays: • • • • • 3-digit LED display 8 MENU-buttons in 2 rows of 4 buttons each 8 LEDs (serving as indicators for the MENU-buttons) 1 Wheel without spring (assignable to any Midi Controller #1..31) 1 spring loaded Wheel (for Pitch Bend function) In addition LMK2+ is equipped with a monophonic After Touch sensor below the keys that is activated if you put pressure on the keys pressed down.
7. OPERATION OF THE KEYBOARD 7.1 SWITCHING THE KEYBOARD ON When the keyboard is switched ON – i.e. if the external power supply is connected or a USB connection is established – a message regarding the software version will appear for several seconds on the display (for example "201" for version 2.01) and the LEDs will flicker for several seconds.
7 CONTROLLER In this menu the on/off status of each wheel, the after touch sensor, the external foot switches and the external foot controller is determined for each keyboard zone, as well as the controller number (#1...31) for the first wheel (the not spring loaded type). 8 PANIC This menu provides a PANIC-button which can be used in any operational mode. 7.
.3.1 PRESET (1) Leftmost button in the upper row The PRESET-menu serves to call up the user preset (1) or one of the 16 factory presets (2-17). Each preset contains all data about the 4 keyboard zones, i.e. the corresponding keyboard ranges, Midi-channels, transpositions, allocation and activation of the controllers and the velocity-response curves. When entering this menu the LED display will show the number of the currently selected preset.
Sending a realtime instruction The upper three white keys of the lowest octave are assigned to the real time instructions START (G), STOP (A), and CONTINUE (H). If one of these three keys is pressed while beeing in menu 2 the corresponding realtime instruction is sent. An abbreviation of the message will appear on the display for several seconds ("StP", "StA", "CON"), then the keyboard goes into PLAY-mode. Pay attention that LMK2+ transmits only these three real time events. No clock events i.e.
7.3.7 CONTROLLER (7) Third button in the lower row This menu serves to activate or deactivate the wheels, the after touch, the external footswitches and the external foot controller in the 4 keyboard zones. Additionaly the controller number for the wheel without spring is determined in this menu. When entering this menu the number of the currently selected keyboard zone is shown on the left side of the display, on the right side on of the following abbreviations is to be seen: Abbrev.
Appendix A: Information about the velocity-response curves When defining the parameters of the keyboard zones, one can select among 8 velocity-response curves. In the following paragraph the reasons for this feature shall be discussed briefly. The special Midi-chip used inside the LMK2+ to poll the key-contacts uses the time difference required by the switch-contact to derive the velocity response (or dynamics-value).
Appendix B: Pin Assignment of the Jack Sockets Power Supply 1 "high" end 2 1 = +7...12V DC 2 = GND "low" end Foot Control 2...
Appendix C : Velocity-Response Reduction Factor for the Black Keys Because of the shorter leverage the black keys have a slightly higher velocity response than the white keys with pressure being equal. The LMK2+ enables to reduce the velocity values of the black keys in comparison to the white keys. To adjust the reduction factor you have to keep pressed the first button (PRESET) during power on. In this case you will enter a special menu where a 3 digit number is to be seen on the display.
