SPECIFICATION   FUNCTION   SAMPLES   DOCUMENTATION AND SW SUPPORT

MDCB-2v2 : MIDI / Juno-60 Interface

SPECIFICATION	^^^^^

MDCB-2 ver. 2 enables Roland Juno-60 synthesizer to be connected to MIDI systems. With help of it, you can remotely control keyboard of instrument and its VCF and arpeggiator by MIDI commands. Hold and Patch Shift functions can be controlled via MIDI too. MDCB-2 ver. 2 enhances DCO functions - Chord mode can be chosen which is not accessible by any other method. The instrument then works like polyphonic MIDI sound expander.

Input of MIDI bus Output of MIDI bus Parameters selector MIDI activity indication Power-on indication Reset button Power supply adapter Output CV for Juno-60 VCF Output for Juno-60 HOLD Output for Juno-60 PATCH SHIFT Output for Juno-60 ARPG DCB input / output

Possibilities of MDCB-2 ver. 2:

• Receiving and transmitting MIDI channel selection in full range 1 to 16 or "Multichannel" mode for receiving.
• The device operates in two directions, it converts MIDI commands Note On/Off from MIDI input to DCB data and transmit the data received from DCB interface to MIDI output simultaneously.
• LED indicators of power-on state, edit mode and MIDI buses activity (selectable).
• Large support of SysEx Messages for MIDI communication (parameter changes and saving, current status reading etc.).
• Internal LFO with 90 selectable waveforms.
• Possibility of synchronization LFO and Arpeggiator with MIDI clock.

Global system parameters programmable by user (can be set via MIDI Control Changes):

• MIDI Msg Indicator (None / In / Out / Both)
• MIDI Clock Indicator (Off / On)
• Rx Multi-Channel (Off / On)
• MIDI Out Mode (Off / Thru / DCB-Tx)
• Auto-reset (Off / On)
• Pgm Change Mode (None / Patch Shift / Preset Change / Both)
• Tx Channel Shift (+0 to +15)
• VCF Direct Controller Select (0~127)
• Arpegggio Direct Controller Select (0~127)
• Arpeggio Clock Pulse Duration
• Patch Shift Pulse Duration

Preset's parameters programmable by user (can be set via MIDI Control Changes, up to 64 settings can be stored in internal memory):

• DCO Key Shift (-36 to +24 semitones)
• DCO Mode (Poly / Chord)
• DCO Chord Edit (1 to 6 notes in range +-12 semitones with regard to pressed key)
• LFO Sync (Free / MIDI Clk)
• LFO Vaweform (64x Wave, 26x Groove)
• LFO Rate (0,2~10 Hz or 1~64 32th notes in dependence on Sync)
• LFO Delay (0~12,5 sec or 0~64 32th notes in dependence on Sync)
• LFO Retrigger (Off / On)
• VCF Control Mode (Normal / Controller / Pitch Wheel)
• VCF Pitch Wheel Range (0~100%)
• VCF Cutoff (0~100%)
• VCF LFO Amount (0~100%)
• VCF MOD Amount (0~100%)
• VCF Velocity Polarity (Last Positive / Last Negative / Average Positive / Average Negative)
• VCF Velocity Amount (0~100%)
• VCF Key+Chnl Aftertouch Polarity (Last Positive / Last Negative / Average Positive / Average Negative)
• VCF Key Aftertouch Amount (0~100%)
• VCF Channel Aftertouch Amount (0~100%)
• ARPG Sync (Free / MIDI Clock / Controller)
• ARPG Rate (0,4~20 Hz or 1~64 32th notes in dependence on Sync)
• ARPG Key Chase (Off / On)

The device recognizes standard MIDI commands:

• "Note On/Off" (Velocity included)
• "Key Aftertouch"
• "Channel Aftertouch"
• "Program Change"
• "Pitch Wheel"
• "Control Changes" (Modulation, Hold, All Sound Off, Reset All Controllers, All Notes Off and others)
• "MIDI Clock"
• "System Reset"

The delivery includes special DCB interface cable and CD-ROM with complete documentation and support software.
Dimensions - 140 mm (width) x 35 mm (height) x 105 mm (depth).
Device is powered by external supply adapter (recommended accessory - MW-1203GS, only for 230V mains).

Connection of MDCB-2 ver. 2:

FUNCTION	^^^^^

Signal from MIDI bus coming to input MIDI-IN is isolated by optocoupler and brought to CPU. CPU picks data for MDCB-2, converts these data according to parameters settings and final output data is sent to output connectors as the signals for Juno-60 control:

• commands "Note On / Off - Note No." are converted to data for DCB input of Juno-60
• commands "Note On - Velocity", "Key Aftertouch", "Channel Aftertouch", "Control Changes - Nr. 1" are converted (by DA converter) to control voltage (VC) for VCF CONTROL input of Juno-60
• command "Control Changes - Nr. 64" is converted to gate-signal for PEDAL HOLD input of Juno-60
• command "Program Change" is converted to trigger pulse for PATCH SHIFT input of Juno-60 or it changes MDCB-2 presets
• command "MIDI Clock" is used to creating of clock pulses for ARPEGGO CLOCK input of Juno-60

Block diagram

SAMPLES	^^^^^

Next files contain samples of "Groove" waveforms of internal LFO. Sine audio signal of instrument's DCO is used for all samples.

Sample	File		Form
Groove 1:		200 kB
Groove 2:		200 kB
Groove 3:		200 kB
Groove 4:		200 kB
Groove 5:		200 kB
Groove 6:		200 kB
Groove 7:		200 kB
Groove 8:		200 kB
Groove 9:		200 kB
Groove 10:		200 kB
Groove 11:		200 kB
Groove 12:		200 kB
Groove 13:		200 kB
Groove 14:		206 kB
Groove 15:		206 kB
Groove 16:		206 kB
Groove 17:		206 kB
Groove 18:		206 kB
Groove 19:		206 kB
Groove 20:		206 kB
Groove 21:		206 kB
Groove 22:		206 kB
Groove 23:		270 kB
Groove 24:		270 kB
Groove 25:		270 kB
Groove 26:		270 kB

DOCUMENTATION AND SW SUPPORT	^^^^^

User manual		740 kB
MIDI System Exclusive communication		322 kB
System Exclusive Messages generator (SW support)		---
Cakewalk / Sonar Studioware Panel (SW support)		---
Programming MIDI files (SW support)		---
DCB communication overview (Application)		---
Using of one MDCB-2 for more Juno-60 (Application)		---

^^^^^

| SPECIFICATION | FUNCTION | SAMPLES | DOCUMENTATION AND SW SUPPORT |