CHD Elektroservis 8-443 User manual

7
Model 8-433
ver. 1.0
USER’S GUIDE
© 2008 CHD Elektroservis

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
2
Table of contents
page
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Interface functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Interface basic operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. MIDI Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2. Key Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3. Key Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4. Pitch Wheel Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5. Arpeggio Clock Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3. MIDI implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1. Channel commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.1. Note On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.2. Control Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.3. Pitch Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2. Common systemcommands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.1. Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.2. Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3. System Exclusive messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4. Warranty conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Appendix
A. MIDI implementation chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Manufacturer :
CHD Elektroservis
Nad kundratkou 27, 19000 Praha 9
Czech Republic
[e-mail]
www.chd-el.cz

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
3
1. INTRODUCTION
MP-KBD is a MIDI retrofit for Korg Mono / Poly synthesizer. The device enables instrument’s
tone generators to be controlled via MIDI as a MIDI expander. MP-KBD also synchronizes the
arpeggiator speed with external sequencer MIDI clock.
All MP-KBD functions can be adjusted via MIDI parameters. Standard channel and system
parameters or System Exclusive Messages are used. MIDI communication channel is user definable.
Setting of all parameters can be stored in internal user memory. Table 1 shows default factory
settings.
Table 1 – “Factory Reset” settings of interface functions
Function Setting Value of corresponding parameter
MIDI channel choice 13
th
channel MIDI Channel : 12
Keyboard shift setting +53 semitones Key Shift : 53
Key priority setting last key priority Key Priority : 0
Pitch Wheel range setting ±12 semitones Pitch Wheel Range : 12
Arpeggiator rate setting internal generator Arpeggio Clock Rate : 0
1.1. INTERFACE FUNCTIONS
Interface controls the keyboard in parallel manner. The instrument’s keyboard can also be
used together with the MIDI notes. Interface can synchronize the arpeggiator to external MIDI clock or
ignore the synchronization data and use instrument’s internal clock generator. See pic. 1.
Pic. 1 – Block diagram
2. INTERFACE BASIC OPERATION
There are no indicators or switches on the interface. All parameters can be adjusted only via
MIDI commands from external MIDI data source. Default settings from internal memory are set up
during each instrument start-up.
All interface functions are adjustable via MIDI controllers or SysEx messages. There are five
user adjustable parameters, described in the following chapters.

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
4
Pic. 2 –„Key Shift“ parameter description

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
5
2.1. MIDI CHANNEL
This parameter sets the basic MIDI channel for communication with MIDI master system. Any
of the 16 available channels can be set as MIDI OMNI mode as well. OMNI mode enables the
instrument to receive data on all 16 MIDI channels simultaneously.
Parameter values are 0 to 16. Values 0 to 15 represent MIDI channels 1 to 16. Value 16 is for
OMNI MODE. Value of this parameter can be adjusted only by MIDI System Exclusive Message – see
chapter 3.3.
2.2. KEY SHIFT
Key Shift parameter transposes the keyboard. Range of the Key Shift is 0 to +84 semitones.
When the 0 value is set the lowest key of the keyboard is equal to MIDI note 0 and the highest is equal
to MIDI note number 43. When transposing +1 semitone the lowest key of the keyboard has assigned
the MIDI note number 1 and the highest number 44 etc. – when transposing +84 semitones the lowest
key of the keyboard has assigned MIDI note number 84 and the highest number 127. For more details
see pic. 2.
Parameter values are 0 to 84. Thevalue can be adjusted in two ways:
a) by MIDI controller (Control Changes) Nr. 16 – see chapter 3.1.2.
b) by SysEx Message – see chapter 3.3.
2.3. KEY PRIORITY
Value of the parameter adjusts incoming MIDI Note On/Off commands processing in case of
all four tone generators of the instrument are being used.
Parameter values are 0 to 3.
0 !LAST: Last key priority – the last pressed key always replaces the first key pressed.
1 !HIGHER: Higher key priority – if the last pressed key is of higher tone than any of the previously
pressed keys,the lowest key toneis replaced.
2 !LOWER: Lower key priority – if the last pressed key is of lower tone than any of the previously
pressed keys,the highest key tone is replaced.
3 !NONE: No priority – if all four tone generators are being used, all Note On commands are
ignored at the MIDI input.
The value can be adjusted in two ways:
a) by MIDI controller (Control Changes) Nr. 17 - see chapter 3.1.2.
b) by SysEx Message – see chapter 3.3.
2.4. PITCH WHEEL RANGE
Parameter adjusts maximum range of the pitch bend controlled by the MIDI command ”Pitch
Wheel“ (“Pitch Bend“).
Parameter values are 0 to 24. Value 0 switches the pitch bend off. MIDI command “Pitch
Wheel“ is ignored. Values 1 to 24 are equal to transposition semitones, therefore ±2 octave
transposition is available.
The value can be adjusted in two ways:
a) by MIDI controller (Control Changes) Nr. 18 - see chapter 3.1.2.
b) by SysEx Message – see chapter 3.3.

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
6
2.5. ARPEGGIOCLOCK RATE
This parameter adjusts arpeggiator tempo. Parameter values are 0 to 127. Value of 0 switches
instrument’s internal clock generator on. (Arpeggio speed is adjusted by the MG2 - FREQUENCY knob
on the instrument’s panel or by external clock impulses form the ARPEGGIO TRIG IN connector on the
rear panel.)
Parameter values 1 to 127 synchronize arpeggiator speed according to incoming “MIDI Clock“
data. The higher the value of the parameter is set, the higher arpeggiator speed is provided. Value 1
represents 127 MIDI ticks between clock pulses, value 2 represents 126 MIDI ticks, etc. The highest
value of 127 represents one MIDI tick between clock pulses. For conversion rates see Table 2.
The value can be adjusted in two ways:
a) by MIDI controller (Control Changes) Nr. 19 - see chapter 3.1.2.
b) by SysEx Message – see chapter 3.3.
Table 2 – Conversion of parameter value to length of arpeggiator interval
interval between clock pulses in notes
Parameter
value 1/2 1/2
triplet 1/4 1/4
triplet 1/8 1/8
triplet 1/16 1/16
triplet 1/32 1/32
triplet 1/64 triplet
0 *) *) *) *) *) *) *) *) *) *) *)
1 - - - - - - - - - - 127
2 - - - - - - 21 - 42 63 126
3 - - - - - - - - - - 125
4 - - - - - - - 31 - 62 124
5 - - - - - - - - 41 - 123
6 - - - - - - - - - 61 122
7 - - - - - - - - - - 121
8 - - 5 - 10 15 20 30 40 60 120
9 - - - - - - - - - - 119
10 - - - - - - - - - 59 118
11 - - - - - - - - 39 - 117
12 - - - - - - - 29 - 58 116
13 - - - - - - - - - - 115
14 - - - - - - 19 - 38 57 114
15 - - - - - - - - - - 113
16 - - - 7 - 14 - 28 - 56 112
17 - - - - - - - - 37 - 111
18 - - - - - - - - - 55 110
19 - - - - - - - - - - 109
20 - - - - 9 - 18 27 36 54 108
21 - - - - - - - - - - 107
22 - - - - - - - - - 53 106
23 - - - - - - - - 35 - 105
24 - - - - - 13 - 26 - 52 104
25 - - - - - - - - - - 103
26 - - - - - - 17 - 34 51 102
27 - - - - - - - - - - 101

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
7
Table 2 – Conversionof parameter value to length of arpeggiator interval(continued)
interval between clock pulses in notes
Parameter
value 1/2 1/2
triplet 1/4 1/4
triplet 1/8 1/8
triplet 1/16 1/16
triplet 1/32 1/32
triplet 1/64 triplet
28 - - - - - - - 25 - 50 100
29 - - - - - - - - 33 - 99
30 - - - - - - - - - 49 98
31 - - - - - - - - - - 97
32 2 3 4 6 8 12 16 24 32 48 96
33 - - - - - - - - - - 95
34 - - - - - - - - - 47 94
35 - - - - - - - - 31 - 93
36 - - - - - - - 23 - 46 92
37 - - - - - - - - - - 91
38 - - - - - - 15 - 30 45 90
39 - - - - - - - - - - 89
40 - - - - - 11 - 22 - 44 88
41 - - - - - - - - 29 - 87
42 - - - - - - - - - 43 86
43 - - - - - - - - - - 85
44 - - - - 7 - 14 21 28 42 84
45 - - - - - - - - - - 83
46 - - - - - - - - - 41 82
47 - - - - - - - - 27 - 81
48 - - - 5 - 10 - 20 - 40 80
49 - - - - - - - - - - 79
50 - - - - - - 13 - 26 39 78
51 - - - - - - - - - - 77
52 - - - - - - - 19 - 38 76
53 - - - - - - - - 25 - 75
54 - - - - - - - - - 37 74
55 - - - - - - - - - - 73
56 - - 3 - 6 9 12 18 24 36 72
57 - - - - - - - - - - 71
58 - - - - - - - - - 35 70
59 - - - - - - - - 23 - 69
60 - - - - - - - 17 - 34 68
61 - - - - - - - - - - 67
62 - - - - - - 11 - 22 33 66
63 - - - - - - - - - - 65
64 - 2 - 4 - 8 - 16 - 32 64
65 - - - - - - - - 21 - 63
66 - - - - - - - - - 31 62
67 - - - - - - - - - - 61
68 - - - - 5 - 10 15 20 30 60

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
8
Table 2 – Conversionof parameter value to length of arpeggiator interval(continued)
interval between clock pulses in notes
Parameter
value 1/2 1/2
triplet 1/4 1/4
triplet 1/8 1/8
triplet 1/16 1/16
triplet 1/32 1/32
triplet 1/64 triplet
69 - - - - - - - - - - 59
70 - - - - - - - - - 29 58
71 - - - - - - - - 19 - 57
72 - - - - - 7 - 14 - 28 56
73 - - - - - - - - - - 55
74 - - - - - - 9 - 18 27 54
75 - - - - - - - - - - 53
76 - - - - - - - 13 - 26 52
77 - - - - - - - - 17 - 51
78 - - - - - - - - - 25 50
79 - - - - - - - - - - 49
80 1 - 2 3 4 6 8 12 16 24 48
81 - - - - - - - - - - 47
82 - - - - - - - - - 23 46
83 - - - - - - - - 15 - 45
84 - - - - - - - 11 - 22 44
85 - - - - - - - - - - 43
86 - - - - - - 7 - 14 21 42
87 - - - - - - - - - - 41
88 - - - - - 5 - 10 - 20 40
89 - - - - - - - - 13 - 39
90 - - - - - - - - - 19 38
91 - - - - - - - - - - 37
92 - - - - 3 - 6 9 12 18 36
93 - - - - - - - - - - 35
94 - - - - - - - - - 17 34
95 - - - - - - - - 11 - 33
96 - 1 - 2 - 4 - 8 - 16 32
97 - - - - - - - - - - 31
98 - - - - - - 5 - 10 15 30
99 - - - - - - - - - - 29
100 - - - - - - - 7 - 14 28
101 - - - - - - - - 9 - 27
102 - - - - - - - - - 13 26
103 - - - - - - - - - - 25
104 - - 1 - 2 3 4 6 8 12 24
105 - - - - - - - - - - 23
106 - - - - - - - - - 11 22
107 - - - - - - - - 7 - 21
108 - - - - - - - 5 - 10 20
109 - - - - - - - - - - 19

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
9
Table 2 – Conversionof parameter value to length of arpeggiator interval(continued)
interval between clock pulses in notes
Parameter
value 1/2 1/2
triplet 1/4 1/4
triplet 1/8 1/8
triplet 1/16 1/16
triplet 1/32 1/32
triplet 1/64 triplet
110 - - - - - - 3 - 6 9 18
111 - - - - - - - - - - 17
112 - - - 1 - 2 - 4 - 8 16
113 - - - - - - - - 5 - 15
114 - - - - - - - - - 7 14
115 - - - - - - - - - - 13
116 - - - - 1 - 2 3 4 6 12
117 - - - - - - - - - - 11
118 - - - - - - - - - 5 10
119 - - - - - - - - 3 - 9
120 - - - - - 1 - 2 - 4 8
121 - - - - - - - - - - 7
122 - - - - - - 1 - 2 3 6
123 - - - - - - - - - - 5
124 - - - - - - - 1 - 2 4
125 - - - - - - - - 1 - 3
126 - - - - - - - - - 1 2
127 - - - - - - - - - - 1
Note.: *) tempo of arpeggiator is controlled by internal clock generator
3. MIDI IMPLEMENTATION
Interface has only MIDI input - therefore it only receives MIDI commands. Interface recognizes
channel commands, common systemcommands and SystemExclusive messages.
3.1. CHANNEL COMMANDS
Interface receives MIDI commands on selected MIDI channel (parameter "MIDI Channel"). In
OMNI mode, interface receives data on all 16 MIDI channels simultaneously.
3.1.1. NOTE ON/OFF
Interface receives Note On/Off on selected MIDI channel. “Key Shift“ parameter defines
assignment of MIDI notes to instrument’s keys. When four valid MIDI notes are received (all four tone
generators are sounding), all following received MIDI Note commands are processed according to
„Key Priority“ parameter setting.
3.1.2. CONTROL CHANGES
Interface recognizes standard MIDI controllers Nr. 64, 120, 121, 123. Other controllers are
used for adjusting temporary settings of internal parameters (controllers 16 to 19). All acceptable
controllers are received on MIDI channel chosen by “MIDI Channel“ parameter.

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
10
CC 64 – Hold
The controller works in standard way: It holds tone generators sounding all the time while the
"Hold" pedal is pressed. Values (second databyte) 64 to 127 are recognized as ON (pedal pressed),
values 0 to 63 are recognized as OFF (pedal released).
If the controller is active and Note On command for currently sounding note is received, the
envelope generator is not trigged again – therefore percussive sounds are not played.
CC 120 – All Sound Off
When the controller is received (second databyte must have value of 0) all tone generators are
muted regardless whether they are kept active by "Note On" command or the "Hold" controller.
CC 121 – Reset All Controllers
When the controller is received (the second databyte must have value of 0) „Hold“ controller is
switched off and „Pitch Wheel“ controller is adjusted into center position.
CC 123 – All Notes Off
When the controller is received (the second databyte must have value of 0) all tone generators
are muted if "Hold" controller is inactive. If "Hold" is active "All Notes Off" command is executed after
"Hold" pedal release.
CC 16 – Key Shift
Received value of the controller (its second databyte) adjusts the “Key Shift“ parameter - see
pic. 3 and tab. 3. Value of the parameter is adjusted only temporarily - until next instrument restart.
Table 3 – Conversion of CC 16 value to ”Key Shift“ parameter value (in semitones)
CC Shift CC Shift CC Shift CC Shift CC Shift CC Shift CC Shift CC Shift
0 +0 16 +10 32 +21 48 +31 64 +42 80 +53 96 +63 112 +74
1 +0 17 +11 33 +21 49 +32 65 +43 81 +53 97 +64 113 +75
2 +1 18 +11 34 +22 50 +33 66 +43 82 +54 98 +65 114 +75
3 +1 19 +12 35 +23 51 +33 67 +44 83 +55 99 +65 115 +76
4 +2 20 +13 36 +23 52 +34 68 +45 84 +55 100 +66 116 +77
5 +3 21 +13 37 +24 53 +35 69 +45 85 +56 101 +67 117 +77
6 +3 22 +14 38 +25 54 +35 70 +46 86 +57 102 +67 118 +78
7 +4 23 +15 39 +25 55 +36 71 +47 87 +57 103 +68 119 +79
8 +5 24 +15 40 +26 56 +37 72 +47 88 +58 104 +69 120 +79
9 +5 25 +16 41 +27 57 +37 73 +48 89 +59 105 +69 121 +80
10 +6 26 +17 42 +27 58 +38 74 +49 90 +59 106 +70 122 +81
11 +7 27 +17 43 +28 59 +39 75 +49 91 +60 107 +71 123 +81
12 +7 28 +18 44 +29 60 +39 76 +50 92 +61 108 +71 124 +82
13 +8 29 +19 45 +29 61 +40 77 +51 93 +61 109 +72 125 +83
14 +9 30 +19 46 +30 62 +41 78 +51 94 +62 110 +73 126 +83
15 +9 31 +20 47 +31 63 +41 79 +52 95 +63 111 +73 127 +84

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
11
Pic. 3 – Conversion of CC 16 value to ”Key Shift“ parameter value
CC 17 – Key Priority
Received value of the controller (its second databyte) adjusts the „Key Priority“ parameter -
see pic. 4 and tab. 4. Value of the parameter is adjusted only temporarily - until next instrument restart.
Table 4 – Conversion of CC 17 value to ”Key Priority“ parameter value
CC Priority CC Priority
0 ~ 31 Last 64 ~ 95 Lower
32 ~ 63 Higher 96 ~ 127 None
Pic. 4 – Conversion of CC 17 value to ”Key Priority“ parameter value
CC 18 – Pitch Wheel Range
Received value of the controller (its second databyte) adjusts the “Pitch Wheel Range“
parameter - see pic. 5 and tab. 5. Value of the parameter is adjusted only temporarily - until next
instrument restart.

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
12
Table 5 – Conversion of CC 18 value to ”Pitch Wheel Range“ parameter value (in semitones)
CC Range CC Range CC Range CC Range CC Range
0 ~ 4 ±0 25 ~ 29 ±5 50 ~ 54 ±10 75 ~ 79 ±15 100 ~ 104 ±20
5 ~ 9 ±1 30 ~ 34 ±6 55 ~ 59 ±11 80 ~ 84 ±16 105 ~ 109 ±21
10 ~ 14 ±2 35 ~ 39 ±7 60 ~ 64 ±12 85 ~ 89 ±17 110 ~ 114 ±22
15 ~ 19 ±3 40 ~ 44 ±8 65 ~ 69 ±13 90 ~ 94 ±18 115 ~ 119 ±23
20 ~ 24 ±4 45 ~ 49 ±9 70 ~ 74 ±14 95 ~ 99 ±19 120 ~ 127 ±24
Pic. 5 – Conversion of CC 18 value to ”Pitch Wheel Range“ parameter value
CC 19 – Arpeggio Clock Rate
Received value of the controller (its second databyte) adjusts the “Arpg Clock Rate“
parameter. Value of the parameter is adjusted only temporarily - until next instrument restart.
3.1.3.PITCH WHEEL (PITCH BEND)
“Pitch Wheel“ (“Pitch Bend“) has standard function – it changes the tune of played notes. The
minimum / maximum range is adjusted by the „Pitch Wheel Range“ parameter ( ±0 to ±24 semitones).
Since the interface does not have direct access to control voltage (CV) of tone generators, the
tone is not detuned continuously but in semitone steps. Together with note tune changes the envelope
generators are triggered.
3.2. COMMON SYSTEM COMMANDS
3.2.1. CLOCK
If “Arpg Clock Rate“ parameter is equal to 0, MIDI clock commands are ignored. For values of
“Arpg Clock Rate“ higher than 0, interface receives synchronization impulses of MIDI Clock (status
byte F8h) for arpeggiator tempo (see chapter 2.5.).

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
13
Maximum arpeggiator tempo is limited by the instrument’s hardware. When extremely high
speeds of MIDI Clock and song tempo are used, the arpeggiator can play out of the tempo or omit
several notes.
3.2.2. RESET
Complete interface reset is done after receiving “Reset“ command (status byte FFh) – all
parameters are set to their default values stored in internal memory.
3.3. SYSTEM EXCLUSIVE MESSAGES
System Exclusive communication enables the user to adjust values of all interface parameters.
SystemExclusive Messagestructureis always as follows:
F0h Start SysEx
00h 20h 21h Manufacturer ID
ii Device ID
57h ModelID
aa Address
dd…dd Data
xx Checksum
F7h End SysEx
The description of values is as follows:
ii : Identification number of the interface – same as the actual number of the MIDI channel (00h to 0Fh)
or universal ID (7Fh).
aa : Parameter number. Allowed address range is 00h to 05h :
00h = MIDI Channel – receiving MIDI channel
01h = Key Shift– keyboard transpose
02h = Key Priority – key priority parameter
03h = Pitch Wheel Range – Pitch bend range
04h = Arpeggio Clock Rate – clock source selection for the arpeggiator
05h = All – change of all parameters in internal memory
For addresses aa = 00h to 04h, value of one parameter is changed only temporarily – new value is
valid until next change is done or the instrument is turned off.
For address aa = 05h, values of all parameters are changed permanently, new values are stored in
internal memory.
dd…dd : New value of the parameter(s)
For addresses aa = 00h to 04h, datablock includes only one byte with value of parameter. For
address aa = 05h, datablock includes block of five bytes with values of all parameters (in order: MIDI
Channel, Key Shift, Key Priority, Pitch Wheel Range, Arpeggio Clock Rate).
xx : Checksum – seven-bit sumof the Model ID to Checksum bytes must be equal tozero.
For the dd data-byte:
aa = 00h !dd = 00h ~ 10h, value 00h to 0Fh represents MIDI channel number 1 to 16, value 10h
for OMNI
aa = 01h !dd = 00h ~ 54h, value sets keyboard transposition in semitones +0 to +84
aa = 02h !dd = 00h ~ 03h, value 00h sets priority “Last“, value 01h sets “Higher“, value 02h sets
“Lower“ and value 03h sets no priority “None“ mode
aa = 03h !dd = 00h ~ 18h, value adjusts maximum pitch bend range ±0 to ±24 semitones

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
14
aa = 04h !dd = 00h ~ 7Fh, value 00h selects internal clock generator of the instrument, values
01h to 7Fh adjust speed for external MIDI Clock control
aa = 05h !dd…dd is block of five databytes with values described above
Example 1.: Temporary change of MIDI channel to channel Nr. 1
Start SysEx F0h
Manufacturer ID 00h 20h 21h
Device ID 7Fh (universal ID)
Model ID 57h
Address 00h (parameter “MIDI Channel“)
Data 00h (1
st
channel)
Checksum 29h (57h+00h+00h+29h = 00h)
End SysEx F7h
Example 2.: Permanent change of all parameters to values - MIDI Channel = OMNI, Key Shift = 41,
Key Priority = NONE, Pitch Wheel Range = ±24 semitones, Arpeggio Clock Rate = 1/32
Start SysEx F0h
Manufacturer ID 00h 20h 21h
Device ID 7Fh (universal ID)
Model ID 57h
Address 05h (all parameters)
Data 10h 29h 03h 18h 7Dh (values listed above)
Checksum 53h (57h+05h+10h+29h+03h+18h+7Dh+53h = 00h)
End SysEx F7h
For easier SysEx Message creation please use the software generator available on enclosed
CD-ROM or at “http://www.chd-el.cz”.
Cakewalk™ or Sonar™ users can use pre-defined Studio Ware Panel for easier operation,
available on enclosed CD-ROM.
4. WARRANTY CONDITIONS
Equipment comes with thirty-month warranty starting from the date of equipment take-over by
the customer. This date must be specified on warranty list together with dealer's confirmation.
During this period of time, all defects of equipment or its accessories, caused by defective
material or faulty manufacturing, will be removed free of charge.
Warranty repair is asserted by the customer against the dealer.
Warranty period is to be extended for the time period, during which the product was under the
warranty repair.
Relevant legal regulations take effect in case of cancellation of purchase contract.
Customer will lose the right for free warranty repair, if he will not be able to submit properly filled
out warranty list or if the defects of the product had been caused by:
- unavoidable event (natural disaster),
- connecting the device to incorrect supply voltage,
- inputs or outputs overloading by connecting the signals source or load source with not-corresponding
characteristics etc.,
- faulty equipment operation, which is in conflict with instructions referred-to in the operating manual,
- mechanical damage caused by customer during transportation or usage of equipment,
- unprofessional interference with the equipment or by equipment modification without manufacturer’s
approval.

MP-KBD MIDI Interface for Mono / Poly Keyboard Model 8-433 ver. 1.0
Copyright © 2008 CHD Elektroservis
All rights reserved. No part of this publication may be reproduced in any form without written permission of CHD Elektroservis.
15
APPENDIX
A. MIDI IMPLEMENTATION CHART
Device : MP-KBD Date : 5 / 2008
Model : 8-433 Version : 1.0
Function Transmission Reception Remarks
Basic
Channel Default Changed X13
1~16
1
)
Mode Default
Messages X Mode 3
X
2
)
Note Number X0~127
3
)
Velocity Note ON
Note OFF X X X X
After
Touch Key's Channel's X X X X
Pitch Bender X O
Control
Changes 16
17
18
19
64
120
121
X
X
X
X
X
X
X
O
O
O
O
O
O
O
Own CC – Key Shift
Own CC – Key Priority
Own CC – Pitch Wheel Range
Own CC – Arpg Clock Rate
Hold
All Sound Off
Reset All Controllers
Program
Change X X
System
Exclusive X O See description
System
Common Song Position Song Select
Tune
X
X
X
X
X
X
System
Real Time Clock Command X X O X
Others Local ON/OFF
All Notes Off
Active Sensing
Reset
X
X
X
X
X
O
X
O
Notes :
1
) Can be changed by SysEx Msg
2
) Can be changed to Mode 1 by SysEx Msg
3
) Only 44 Notes can be accepted at a time - range depends on “Key Shift” parameter setting
Mode 1 : OMNI ON, POLY
Mode 3 : OMNI OFF, POLY Mode 2 : OMNI ON, MONO Mode 4 : OMNI OFF, MONO O: Yes X: No