CHD Elektroservis SH2/9-M User manual

7
Model 8-437
ver. 1.0
OWNER’S MANUAL
©
2011 CHD Elektroserv is

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
2
Content
page
1. Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Function of interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Connection to MIDI system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Connection for standard working mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Connection for memory content transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Interface operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. Initialization sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2. Instrument operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3. Indication of working status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1. System parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1.1. MIDI Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1.2. ENV Break Pulse Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2. Preset parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2.1. VCO PITCH - Key Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2.2. VCO PITCH - Aftertouch Bend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2.3. VCO MOD - Wave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2.4. VCO MOD - Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2.5. VCO MOD - Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.6. VCO MOD - Wheel Amount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.7. VCO MOD - Aftertouch Amount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.8. Parametr “VCO MOD - Retrig“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.9. VCF CUTOFF – Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.10. VCF CUTOFF - Key Follow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.11. VCF CUTOFF - Velocity Amount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.12. VCF CUTOFF - Aftertouch Amount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.13. VCA LEVEL - Key Follow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.14. VCA LEVEL - Velocity Amount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.15. VCA LEVEL - Aftertouch Amount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.16. VCA LEVEL - Volume Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.17. CONTROL - Bender Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2.18. CONTROL - Indicator Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5. MIDI implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1. Channel commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.1. Note On/Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.2. Control Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.2.1. Standard controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.2.2. Own controllers for preset parameters setting . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.2.3. Own controllers for interface’s functions control . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.3. Program Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.5. Channel Aftertouch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1.6. Pitch Bend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2. Common system commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.1. Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.3. System exclusive communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6. Limitation during the interface usage
and recommended setting
. . . . . . . . . . . . . . . 21
7. Technical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8. Warranty conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Appendices
A. MIDI implementation chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
B. Error status indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
C. Emergence of loop in MIDI communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
D. Automatic activation of interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
3
1. DEVICE DESCRIPTION
SH2/9-M is a MIDI retrofit for Roland SH-2 and SH-09 synthesizers. The device enables the
instrument to be controlled via MIDI as a MIDI expander. SH2/9-M enables to control instrument’s
BENDER, VCO, VCF, VCA and ENV via MIDI commands. More over, the device includes software
LFO that can be used as alternative source for instrument’s VCO modulation
1.1. FUNCTION OF INTERFACE
Functional block schematics of the interface is on pic. 1. The interface controls instrument’s VCO
via CV generated by 16-bit DAC (it replaces instrument’s KCV) [1] and it switches GATE generator for
launching of ENV too [2]. Manual controller BENDER on instrument’s panel can be disconnected and
replaced with DAC of the interface [3]. Interface’s voltage regulator is inserted between VCF and
control circuits of VCF [4]. It allows additional changes of frequency of VCF. Interface’s voltage
regulator is inserted between VCA and control circuits of VCA too [5]. It allows additional changes of
output level of VCA.
Pic. 1 – Functional block schematics
2. CONNECTION TO MIDI SYSTEM
The interface has connectors for both MIDI data input and output. Standard MIDI cables with DIN
41524 connector (5 pins / 180°) is used for interconnection with other MIDI devices.
2.1. CONNECTION FOR STANDARD WORKING MODE
Data from host MIDI system (PC, sequencer, master keyboard etc.) for control of SH-2 / SH-09
instrument are incoming to MIDI-IN input of the interface.
All MIDI data incoming to MIDI input of the interface are transferred to MIDI-THRU/OUT output of
the interface without any changes (THRU function). It enables connection of next MIDI devices to host
system without an additional Thru-Box etc. MIDI input of next MIDI device will be simply interconnected
with MIDI-THRU/OUT output of the interface (see pic. 2).
If there are no other devices controlled from the MIDI host system, only MIDI-IN cable is
necessary (from host syste to MIDI-IN input of the interface). MIDI-THRU/OUT output of the interface
stays unconnected.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
4
Pic. 2 – Connection to MIDI system for standard working mode
2.2. CONNECTION FOR MEMORY CONTENT TRANSFER
Except data from input MIDI-IN, own interface’s System Exclusive messages are transmitted to
output MIDI-THRU/OUT. These messages are transmitted as response of the interface to requests for
memory banks content listing from host system.
If that function is used, MIDI output MIDI-THRU/OUT of the interface must be connected to MIDI
input of host system (PC, sequencer…) in which data from interface’s memory will be archived (see
pic. 3).
Pic. 3 – Connection to MIDI system for memory content transfer
Attention! If this way of connection is used, function named MIDI ECHO, THRU etc. must be
disabled in sequencer. In other case, communication loop can occur and whole MIDI system “freezes”!
3. INTERFACE OPERATION
The interface has only one manual control element – tumbler switch – which switches the
interface on (activation of the interface) or off (deactivation of the interface). Working statuses and
functions of the interface are indicated with help of two-color (red / green) LED.
Remark: Switch and indication LED need not to be installed unconditionally. The interface can be
switched on and off remotely – with help of MIDI commands. Details are described in Appendix D.
3.1. INITIALIZATION SEQUENCE
Always when SH-2 / SH-09 instrument is switched on, reset sequence of interface’s CPU is
executed automatically. During this sequence, system parameters are read from memory (see chapter
4.1) and default values of preset parameters are stored into edit buffer (see table 2). This causes that
the interface is set to initial non-active mode and it has no influence to the instrument. After that, status
of tumbler switch is watched and in dependence on it, all next activity of the interface unwinds.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
5
3.2. INSTRUMENT OPERATION
If the interface is switched off, it has no influence to the instrument and SH-2 / SH-09 instrument
can be controlled by the same way like no MIDI interface is installed. In off status of the interface, all
MIDI communication is disabled too – on both MIDI input and output of the interface. Also, indication
LED doesn’t light at all.
After switching on (by manual switch), the interface stays still inactive (it has still no influence to
the instrument) and indication LED doesn’t still light. But MIDI communication is now enabled and the
interface is prepared to take control over the instrument’s circuits.
This occurs automatically after first MIDI command is received. Activation of the interface is
indicated with LED – it lights red. Immediately after that, instrument’s keyboard is disconnected and the
interface takes control over instrument’s VCO. Since this time, own instrument’s keyboard can’t be
used yet. However, all other control elements on SH-2 / SH-09 instrument’s panel stay fully functional
except Bender – its function depends on setting of CONTROL - Bender Mode preset parameter (see
chapter 4.2.16).
3.3. INDICATION OF WORKING STATUS
The user is informed about the actual interface’s status by the dual color indication LED installed
on instrument’s panel.
If the interface is inactive, the LED does not light at all.
Active status of the interface is indicated by red light of the indication LED.
If indication of some function of the interface is allowed by CONTROL - Indicator Mode preset
parameter (see chapter 4.2.17), selected function is indicated by green light or blink of the indication
LED.
If there is an error occurred in interface’s function, the indication LED starts to blink – see
Appendix B.
4. PARAMETERS
Settings of parameters affects significantly operation of the interface during incoming MIDI
commands processing and during control of instrument’s circuits. The parameters are divided in two
basic groups – system parameters and preset parameters – see pic. 4.
Pic. 4 – Structure of internal interface’s memory
24 23 ... 2PRESET 1
SYSTEM
PRESET
EDIT
BUFFER
MEMORY
BANKS
MEMORY
BANK
Preset parameters
editing (CC)
CPU
(Control
of SH... in
accordance
with
parameters
in buffers)
Data reading
during preset
changes
(Pgm Change,
SysEx)
Data saving
into permanent
memory
(CC, SysEx)
User accessible permanent memory Internal temporary memory
Data reading
during reset
(HW, CC, SysEx)
Bulk Dump
(SysEx)
SH-2 / SH-09
instrument's circuits
SYSTEM
WORKING
BUFFER
[1]
[5] [4]
[6]
[7] [3]
[2]

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
6
All parameters are stored in memory banks in internal memory of the interface. There is one
memory bank for system parameters and 24 memory banks for preset parameters. Content of all
memory banks can be read or changed with help of Bulk Dump SysEx Messages [6] and [7] (see
description of System Exclusive communication).
Content of system memory bank is read into working buffer and then to CPU always only during
interface’s reset [3].
Choice of requested preset can be done with help of standard MIDI command Program Change
or with help of SysEx command (see description of System Exclusive communication). Always when
preset is changed, content of selected preset memory bank is transferred to edit buffer [1] and from
here, operation of interface’s CPU is driven.
Preset parameters in edit buffer can be changed during the device operation with help of MIDI
Control Changes [4]. Made changes then can be stored back to some of preset memory banks [5]
(with help of SysEx command – see description of System Exclusive communication).
4.1. SYSTEM PARAMETERS
The system parameters control the basic function of the interface. System parameters are
always valid independently on the actual preset settings – the change of the system parameters take
effect the same way in all user presets.
System parameters can be changed only by Bulk Dump SysEx Messages (see description of
System Exclusive communication). However, executed changes approve oneself till after interface’s
reset – when the instrument will be switched on next time!
The values of system parameters that are saved in factory or if “Factory Reset“ is executed (see
description of System Exclusive communication) shows table 1.
Table 1 – Range of valid values and a default values of system parameters
Valid values Default values (Factory Reset)
Parameter name [dec] [hex] [dec] [hex]
MIDI Channel 0 ~ 15 00 ~ 0F 0 00
ENV Break Pulse Duration 0 ~ 116 00 ~ 74 12 0C
4.1.1. MIDI CHANNEL
Parameter selects MIDI channel for the communication of the interface with MIDI system. It is
possible to choose any of the 1-16 channels.
Parameter values are 0 - 15. Value 0 is for MIDI channel Nr.1, value 1 selects Nr. 2 etc. up to
value 15 which selects MIDI channel Nr. 16
4.1.2. ENV BREAK PULSE DURATION
Parameter sets the duration of break impulses for the instrument’s ENV circuits if the interface
works in Legato mode (see description of MIDI controller Nr. 68 – chapter 5.1.2.1). Length of the break
impulses is defined by the following formula:
ENV_BREAK_PULSE = (PARAMETER_VALUE + 4) / 4 [in milliseconds]
Parameter values range is 0 - 116, corresponding to the length of the break impulses 1 ms - 30
ms. Default value is 12 (e.g. impulse with the length of approx. 4 ms). It is suitable for the most
situations, only in the exceptional situations the value of the parameter can be adjusted to to provide
reliable reaction of the ENV circuits.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
7
4.2. PRESET PARAMETERS
The preset parameters set functions of the interface whose influence sound of SH-2 / SH-09
instrument. The preset parameters sets, which and how MIDI commands are going to control
BENDER, VCO, VCF, VCA and ENV circuits of the instrument.
Values of the preset parameters in edit buffer (see pic. 4) are set by the MIDI controllers (Control
Changes) - it is possible to change them during the playing the instrument thus. Default values of the
preset parameters stored in the edit buffer after reset are shown in table 2. These default values are
also stored stored in all interface preset memory banks after “Factory Reset“ procedure (see manual
for SysEx communication).
Table 2 – Range of valid values and a default values of preset parameters
Range of valid
values Default values Setting with help of MIDI CC Nr.
Parameter name
[dec] [hex] [dec] [hex] [dec] [hex]
VCO - Pitch - Key Shift 0 ~ 79 00 ~ 4F 48 30 40 28
VCO - Pitch - Aftertouch Bend 0 ~ 127 00 ~ 7F 64 40 41 29
VCO - Modulation – Wave 0 ~ 3 00 ~ 03 1 01 42 2A
VCO - Modulation – Polarity 0 ~ 3 00 ~ 03 0 00 43 2B
VCO - Modulation – Rate 0 ~ 127 00 ~ 7F 64 40 44 2C
VCO - Modulation - Wheel Amount 0 ~ 127 00 ~ 7F 0 00 45 2D
VCO - Modulation - Aftertouch Amount 0 ~ 127 00 ~ 7F 0 00 46 2E
VCO - Modulation - Retrig 0 ~ 2 00 ~ 02 2 02 47 2F
VCF - Cutoff – Frequency 0 ~ 127 00 ~ 7F 127 7F 48 30
VCF - Cutoff - Key Follow 0 ~ 127 00 ~ 7F 64 40 49 31
VCF - Cutoff - Velocity Amount 0 ~ 127 00 ~ 7F 0 00 50 32
VCF - Cutoff - Aftertouch Amount 0 ~ 127 00 ~ 7F 0 00 51 33
VCA - Level - Key Follow 0 ~ 127 00 ~ 7F 64 40 52 34
VCA - Level - Velocity Amount 0 ~ 127 00 ~ 7F 0 00 53 35
VCA - Level - Aftertouch Amount 0 ~ 127 00 ~ 7F 0 00 54 36
VCA - Level - Volume Mode 0 ~ 3 00 ~ 03 0 00 55 37
CONTROL - Bender Mode 0 ~ 1 00 ~ 01 1 01 56 38
CONTROL - Indicator Mode 0 ~ 3 00 ~ 03 0 00 57 39
Edited values of the parameters are stored in the edit buffer only. The content of the buffer is
saved temporarily only (see pic. 4), till the preset change or instrument switch off or hardware reset. To
save the edited parameters permanently, it is necessary to save them into a preset memory bank.
There are 24 available spaces for user settings. Saving the values in a preset memory bank is done by
the MIDI System Exclusive command (see manual for SysEx communication). With help of SysEx
commands, it is also possible to change complete content of any preset memory bank.
4.2.1. VCO PITCH - KEY SHIFT
SH2/9-M interface accepts 49 MIDI notes – range of virtual keyboard is four octaves thus. Range
of acceptable notes can be shifted with help of VCO PITCH - Key Shift parameter in whole scale of
MIDI notes. Step is one semitone. Valid range of shift is from 0 to +79 semitones – value of the
parameter can be from 0 to 79 thus.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
8
Pic. 5 – Influence of “VCO Pitch - Key Shift“ parameter
E1 C c c1 c2 c3 c4 c5
28 36 48 60 72 84 96 108
A2
21
c6 g6
120 127
C3 C2
012
g4
103
C1
24
Key Shift = 0
Key Shift = 12
Key Shift = 24
Key Shift = 36
Key Shift = 48
Key Shift = 60
Key Shift = 79
Key Shift = 72
88 keys 76 keys 61 keys
Range
of standard
keyboards
Basic position after interface reset
Tone : MIDI :
49 keys
Range o
f
acceptable MIDI notes

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
9
If no shift is chosen (i.e. parameter value is equal to 0), lowest key of virtual keyboard
corresponds to MIDI note Nr. 0 and highest key corresponds to MIDI note Nr. 48. If shift is +1 semitone
(parameter value is equal to 1), lowest key of corresponds to MIDI note Nr. 1 and highest key
corresponds to MIDI note Nr. 49. And so on up to shift is +79 semitones (parameter value is equal to
79) when lowest key of virtual keyboard corresponds to MIDI note Nr. 79 and highest key corresponds
to MIDI note Nr. 127. By other words, value of the parameter is equal to number of lowest acceptable
MIDI note. Influence of parameter value shows pic. 5.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 40 – see chapter 5.1.2.2.
4.2.2. VCO PITCH – AFTERTOUCH BEND
Frequency of instrument’s VCO can be shifted (“bended“) via MIDI command Channel Afterouch.
The parameter sets level of influence of Channel Afterouch command to VCO frequency. Maximal
possible VCO frequency shift is up to ±4 semitones.
Value of the parameter can be from 0 to 127. If value is equal to 64, MIDI command Channel
Afterouch doesn’t affect instrument’s VCO frequency at all. For parameter values from 65 to 127, VCO
frequency is increased directly proportional to value of Channel Aftertouch command (frequency is
increased in +4 semitones for value 127 and Channel Aftertouch = 127). For parameter values from 63
to 0, VCO frequency is decreased directly proportional to value of Channel Aftertouch command
(frequency is decreased in -4 semitones for value 0 and Channel Aftertouch = 127).
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 41 – see chapter 5.1.2.2.
4.2.3. VCO MOD - WAVE
Pic. 6 – Modulation signal waveform
SH2/9-M interface includes internal software
LFO, which can modulate (sweep) frequency of
instrument’s VCO. Parameter VCO MOD - Wave
selects one from 4 possible waveforms of
modulation signal (see pic. 6). Value of the
parameter can be from 0 to 3. These values
correspond to waveforms: ”Square“ (parameter
value 0), ”Triangle“ (parameter value 1), ”Saw-
Fall“ (parameter value 2) and ”Saw-Rise“
(parameter value 3).
The parameter value in edit buffer can be set
during operation with help of MIDI controller
(Control Changes) Nr. 42 – see chapter 5.1.2.2.
4.2.4. VCO MOD - POLARITY
The parameter chooses sweeping polarity
(orientation) of instrument’s VCO by internal
interface’s LFO. Value of the parameter can be
from 0 to 3. These values set four polarities:
”Center-1“ (parameter value 0), ”Center-2“
(parameter value 1), ”Up“ (parameter value 2) and ”Down” (parameter value 3) – see pic. 7.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 43 – see chapter 5.1.2.2.
Polarity ”Center 1 - 0°“
Frequency of VCO is swept symmetrically around basic frequency.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
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10
Polarity ”Center 2 - 180°“
Same as previously, Frequency of VCO is swept symmetrically around basic frequency, but
phase shift of modulation signal is 180°.
Polarity ”Up“
Frequency of VCO is swept only up from basic frequency (i.e. VCO frequency is only increased
by modulation).
Polarity ”Down“
Frequency of VCO is swept only down from basic frequency (i.e. VCO frequency is only
decreased by modulation).
Pic. 7 – Modulation signal polarity

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
11
4.2.5. VCO MOD - RATE
The parameter sets rate of interface’s internal software LFO. Duration of period and frequency
respectively of internal LFO correspond to parameter value from 0 to 127 shows table 3 and pic. 8.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 44 – see chapter 5.1.2.2.
Table 3 - Period duration / frequency of internal LFO
Mod- Rate Mod – Rate Mod - Rate Mod - Rate
Param. Period Freq. Param. Period Freq. Param. Period Freq. Param. Period Freq.
[dec] [sec] [Hz] [dec] [sec] [Hz] [dec] [sec] [Hz] [dec] [sec] [Hz]
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
10,000
9,613
9,241
8,884
8,540
8,210
7,892
7,587
7,293
7,011
6,740
6,479
6,229
5,988
5,756
5,533
5,319
5,113
4,916
4,725
4,543
4,367
4,198
4,036
3,879
3,729
3,585
3,446
3,313
3,185
3,062
2,943
0,100
0,104
0,108
0,113
0,117
0,122
0,127
0,132
0,137
0,143
0,148
0,154
0,161
0,167
0,174
0,181
0,188
0,196
0,203
0,212
0,220
0,229
0,238
0,248
0,258
0,268
0,279
0,290
0,302
0,314
0,327
0,340
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
2,829
2,720
2,615
2,514
2,416
2,323
2,233
2,147
2,064
1,984
1,907
1,833
1,762
1,694
1,629
1,566
1,505
1,447
1,391
1,337
1,285
1,236
1,188
1,142
1,098
1,055
1,014
0,975
0,937
0,901
0,866
0,833
0,353
0,368
0,382
0,398
0,414
0,431
0,448
0,466
0,485
0,504
0,524
0,545
0,567
0,590
0,614
0,639
0,664
0,691
0,719
0,748
0,778
0,809
0,842
0,876
0,911
0,948
0,986
1,026
1,067
1,110
1,154
1,201
64
65
66
67
68
69
70
71
72
73
74
47
76
77
78
79
80
81
82
83
84
58
86
87
88
89
90
91
92
93
94
95
0,801
0,770
0,740
0,711
0,684
0,657
0,632
0,607
0,584
0,561
0,540
0,519
0,499
0,479
0,461
0,443
0,426
0,409
0,394
0,378
0,364
0,350
0,336
0,323
0,311
0,299
0,287
0,276
0,265
0,255
0,245
0,236
1,249
1,299
1,352
1,406
1,463
1,522
1,583
1,646
1,713
1,782
1,853
1,928
2,006
2,086
2,170
2,258
2,348
2,443
2,541
2,643
2,750
2,860
2,976
3,095
3,220
3,349
3,484
3,624
3,770
3,922
4,080
4,244
96
97
98
99
100
101
102
103
104
107
106
107
108
109
110
111
112
113
114
118
116
117
118
119
120
121
122
123
124
125
126
127
0,227
0,218
0,209
0,201
0,193
0,186
0,179
0,172
0,165
0,159
0,153
0,147
0,141
0,136
0,130
0,125
0,120
0,116
0,111
0,107
0,103
0,099
0,095
0,091
0,088
0,084
0,081
0,078
0,075
0,072
0,069
0,067
4,415
4,593
4,777
4,970
5,170
5,378
5,594
5,819
6,053
6,297
6,550
6,814
7,088
7,373
7,670
7,979
8,300
8,634
8,981
9,343
9,719
10,110
10,517
10,940
11,380
11,838
12,315
12,810
13,326
13,862
14,420
15,000

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
12
Pic. 8 – Rate of internal modulation signal
4.2.6. VCO MOD - MODULATION WHEEL AMOUNT
Parameter sets maximal possible depth of instrument’s VCO modulation allowed for MIDI
controller Modulation (CC1). Value of the parameter can be from 0 to 127. If parameter value is equal
to 0, MIDI controller Modulation (CC1) doesn’t affect instrument’s VCO modulation at all. For
parameter values from 1 to 127 is maximal modulation depth increased directly proportional to value of
the parameter (maximal depth of instrument’s VCO modulation is ±4 semitones for value equal to 127
and CC1 = 127). VCO frequency is swept around frequency given by sum of basic VCO frequency and
shift of Channel Aftertouch in dependence on VCO PITCH - Aftertouch Bend parameter (see pic. 9).
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 45 – see chapter 5.1.2.2.
Pic. 9 – Resulting VCO frequency
4.2.7. VCO MOD - AFTERTOUCH AMOUNT
Parameter sets maximal possible depth of instrument’s VCO modulation allowed for MIDI
command Channel Aftertouch. Value of the parameter can be from 0 to 127. If parameter value is
equal to 0, Channel Aftertouch command doesn’t affect instrument’s VCO modulation at all. For
parameter values from 1 to 127 is maximal modulation depth increased directly proportional to value of
the parameter (maximal depth of instrument’s VCO modulation is ±4 semitones for value equal to 127
and Channel Aftertouch = 127). VCO frequency is swept around frequency given by sum of basic VCO
frequency and shift of Channel Aftertouch in dependence on VCO PITCH - Aftertouch Bend parameter
(see pic. 9).

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
13
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 46 – see chapter 5.1.2.2.
4.2.8. VCO MOD - RETRIG
The parameter disables or enables synchronization of start of internal modulation LFO period
(repeated triggering) with receiving of Note-On MIDI commands. Parameter is of use only if more keys
are pressed simultaneously.
Synchronization ”Off“
Start of LFO period (LFO launching) is synchronized only with pressing of first key after previous
releasing of all keys. Any next pressed key has no influence.
Synchronization ”On“
Start of LFO period is always synchronized with pressing of any acceptable key (i.e. each time
when acceptable Note-On command is received) - LFO is launched repeatedly and independently on
previous releasing of all keys.
Synchronization ”Legato“
Repeated launching of LFO is controlled by MIDI controller Legato (CC68). LFO synchronization
is always “On” in Legato mode and it is always “Off” in Non-Legato mode - see above.
Pic. 10 – LFO synchronization in accordance with Retrig parameter
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 47 – see chapter 5.1.2.2.
4.2.9. VCF CUTOFF – FREQUENCY CONTROL
The parameter allows to decrease basic frequency of VCF set by potentiometer CUTOFF
FREQUENCY on instrument’s panel. Value of the parameter can be from 0 to 127. If parameter value
is equal to 127, basic frequency of VCF set by potentiometer CUTOFF FREQUENCY isn’t affected at
all. When parameter value is decreased, cut-off frequency of VCF is decreased too, up to parameter
value is equal to 0 when VCF is totally closed.
This parameter is useful for creation of atypical sound effects or frequency responses of VCF if
the instrument is controlled via sequencer or PC.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 48 – see chapter 5.1.2.2.
4.2.10. VCF CUTOFF - KEY FOLLOW
Parameter sets affecting level of instrument’s VCF by position of key on the master keyboard
(i.e. in dependence on tone height).

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
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14
Value of the parameter can be from 0 to 127. If value is equal to 64, VCF isn’t affected by key
position at all. For parameter values from 65 to 127, VCF cut-off frequency is increased directly
proportional to MIDI note number. For parameter values from 63 to 0, VCF cut-off frequency is
decreased directly proportional to MIDI note number.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 49 – see chapter 5.1.2.2.
4.2.11. VCF CUTOFF - VELOCITY AMOUNT
Parameter sets affecting level of instrument’s VCF by velocity value of MIDI Note-On commands.
Cut-off frequency of VCF can be increased directly proportional to velocity value. Value of the
parameter can be from 0 to 127. For value equal to 0, VCF isn’t affected by velocity at all. For
parameter value equal to 127, maximal affecting is allowed.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 50 – see chapter 5.1.2.2.
4.2.12. VCF CUTOFF - AFTERTOUCH AMOUNT
Parameter sets affecting level of instrument’s VCF by value of last received Channel Aftertouch
command. Cut-off frequency of VCF can be increased directly proportional to value of Channel
Aftertouch. Value of the parameter can be from 0 to 127. For value equal to 0, VCF isn’t affected by
Channel Aftertouch at all. For parameter value equal to 127, maximal affecting is allowed.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 51 – see chapter 5.1.2.2.
4.2.13. VCA LEVEL - KEY FOLLOW
Parameter sets affecting level of instrument’s VCA by position of key on the master keyboard
(i.e. in dependence on tone height). Value of the parameter can be from 0 to 127. If value is equal to
64, VCA isn’t affected by key position at all. For parameter values from 65 to 127, VCA gain is
increased directly proportional to MIDI note number. For parameter values from 63 to 0, VCA gain is
decreased directly proportional to MIDI note number.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 52 – see chapter 5.1.2.2.
4.2.14. VCA LEVEL - VELOCITY AMOUNT
Parameter sets affecting level of instrument’s VCA by velocity value of MIDI Note-On
commands. Gain of VCA can be increased directly proportional to velocity value. Value of the
parameter can be from 0 to 127. For value equal to 0, VCA isn’t affected by velocity at all. For
parameter value equal to 127, maximal affecting is allowed.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 53 – see chapter 5.1.2.2.
4.2.15. VCA LEVEL - AFTERTOUCH AMOUNT
Parameter sets affecting level of instrument’s VCA by value of last received Channel Aftertouch
command. Gain of VCA can be increased directly proportional to value of Channel Aftertouch. Value of
the parameter can be from 0 to 127. For value equal to 0, VCA isn’t affected by Channel Aftertouch at
all. For parameter value equal to 127, maximal affecting is allowed.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 54 – see chapter 5.1.2.2.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
15
4.2.16. VCA LEVEL - VOLUME MODE
The parameter allows to choose method of instrument’s global loudness control via standard
MIDI controllers Volume (CC7) and Expression (CC11). One of four methods can be chosen: ”Off“
(parameter value 0), ”Volume “ (parameter value 1), ”Expression“ (parameter value 2) and ”Volume
+ Expression” (parameter value 3). In all cases, manual controller VOLUME on instrument’s panel
stays fully functional.
Mode ”Off“
Control of instrument’s global loudness via MIDI controllers Volume (CC7) and Expression
(CC11) is disabled. Both controllers are ignored.
Mode ”Volume“
Only MIDI controller Volume (CC7) is used for control of instrument’s global loudness. Controller
Expression (CC11) is ignored.
Mode ”Expression“
Only MIDI controller Expression (CC11) is used for control of instrument’s global loudness.
Controller Volume (CC7) is ignored.
Mode ”Volume + Expression“
Both MIDI controllers Volume (CC7) and Expression (CC11) are used for control of instrument’s
global loudness.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 55 – see chapter 5.1.2.2.
4.2.17. CONTROL - BENDER MODE
The parameter allows to choose method for control of instrument’s bender. One of two modes
can be chosen: „MIDI“ (parameter value 0) or „Instrument“ (parameter value 1).
Mode ”MIDI“
Manual controller (lever) BENDER on instrument’s panel is disconnected and MIDI command
Pitch Bend (Pitch Wheel) takes control over the bender.
Mode ”Instrument“
Manual controller (lever) BENDER on instrument’s panel works normally and MIDI command
Pitch Bend (Pitch Wheel) is ignored.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 56 – see chapter 5.1.2.2.
4.2.18. CONTROL - INDICATOR MODE
The parameter allows to choose function of interface’s LED indicator. One of four functions can
be chosen: ”Off“ (parameter value 0), ”Gate “ (parameter value 1), ”MIDI-Msg“ (parameter value 2)
and ”Mod-Rate” (parameter value 3). LED indicator works only if the interface is active (i.e. the
instrument is switched to MIDI mode – see chapter 3.2). If the interface is inactive, LED indicator
doesn’t light at all.
Mode ”Off“
LED indicator is turned off in this mode – it light in red continuously.
Mode ”Gate“
In this mode, LED indicator is copying status of envelope generator (ENV) - signal GATE.
Indication LED lights in red in quiescent status and it lights in green if GATE signal is active.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
16
Mode ”MIDI-Msg“
In this mode, LED indicator indicates incoming MIDI commands which are acceptable for control
of the interface. Only transferred MIDI data (THRU function) are not indicated - LED indicator lights in
red. Always when acceptable MIDI data are received, the LED blinks in green.. If acceptable data flow
is continuous, green LED lights seemingly constantly.
Mode ”Mod-Rate“
In this mode, LED indicator indicates rate of interface’s internal software LFO. LED indicator
lights in red or in green alternatively (ratio 1:1) in dependence on internal LFO frequency.
The parameter value in edit buffer can be set during operation with help of MIDI controller
(Control Changes) Nr. 56 – see chapter 5.1.2.2.
5. MIDI IMPLEMENTATION
SH2/9-M interface can communicate by all available methods – it recognizes MIDI channel
commands, common system commands as well as SysEx MIDI commands.
5.1. CHANNEL COMMANDS
Interface recognizes channel MIDI commands "Note-Off", "Note-On", "Control Changes",
"Channel Aftertouch", “Pitch Bend“ and "Program Change". So-called Running Status mode of MIDI
communication is fully kept. The commands are received on the channel defined by the system
parameter MIDI Channel.
5.1.1. NOTE ON/OFF
Interface accepts Note-On and Note-Off commands in the range of max. 49 notes. Accepted
note numbers are defined by VCO PITCH - Key Shift parameter (see chapter 4.2.1).
Although SH-2 a SH-09 are monophonic instruments, the interface remembers last six active
Note-On commands. This is important if more keys are pressed on master keyboard in sequence and
the last is released. In this case, the interface switches back to the previous pressed note (key). If
there are six MIDI notes received yet, next received note replaces the first received note (last received
note has the highest priority).
5.1.2. CONTROL CHANGES
The interface recognizes standard controllers Nr. 1, 7, 11, 64, 68, 120, 121, 123. Some other
controllers are used for temporary setting of parameters values in edit buffer (CC Nr. from 40 to 58)
and for controj of interface’s functions (CC Nr. 119).
5.1.2.1. STANDARD CONTROLLERS
CC 1 – Modulation Wheel
The controller enables modulation of instrument’s VCO by signal of internal software LFO of the
interface. Maximal depth of modulation is given by preset parameter VCO MOD - Wheel Amount. It
can be up to ±4 semitones.
The interface accepts whole range of controller values from 0 to 127.
CC 7 – Volume
The controller enables to control instrument’s loudness (it control instrument’s VCA). It assert
only if preset parameter VCA LEVEL - Volume Control is set to value 1 or 3.
The interface accepts whole range of controller values from 0 to 127.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
17
CC 11 – Expression
The controller enables to control instrument’s loudness (it control instrument’s VCA). It assert
only if preset parameter VCA LEVEL - Volume Control is set to value 2 or 3.
The interface accepts whole range of controller values from 0 to 127.
CC 64 – Hold
The controller works standard way: holds tone generator of the instrument playing (active) during
the time when the Hold command is active (hold pedal pressed). Values from 64 to 127 are recognized
as on-status, values from 0 to 63 as off-status.
CC 68 – Legato
The controller enables (values from 64 to 127) or disables (values from 0 to 63) Legato mode of
playing, i.e. repeated start of the instrument’s envelope generator (ENV) while receiving more MIDI
Note-On commands simultaneously. The controller affects repeated start of internal interface’s LFO
too in dependence on setting of preset parameter VCO MOD - Retrig.
If the Legato mode is off, envelope generator (ENV) starts always repeatedly when any key is
pressed (i.e. if acceptable Note-On command is received) independently on previous releasing of all
keys.
If the Legato mode is on, envelope generator (ENV) starts only if first key is pressed after
previous releasing of all keys. If any next key is pressed, the new key only changes the control voltage
for VCO and the ENV remains unaffected.
CC 120 – All Sound Off
The VCO is muted and ENV generator is switched off immediately after receiving of this
controller – independently on MIDI commands Note-On received previously.
CC 121 – Reset All Controllers
Immediately after receiving of this controller, some CC and other controls are set to their initial
status:
CC1 Modulation Æ minimum (0)
CC7 Volume Æ maximum (127)
CC11 Expression Æ maximum (127)
CC48 Own controller VCF CUTOFF - Frequency Æ maximum (127)
CC64 Hold Æ off (0)
CC68 Legato Æ off (0)
Pitch Bend (Wheel) Æ middle position (4096)
CC 123 – All Notes Off
Same as with All Sound Off, the VCO is muted and ENV generator is switched off immediately
after receiving of this controller – independently on MIDI commands Note-On received previously.
5.1.2.2. OWN CONTROLLERS FOR PRESET PARAMETERS SETTING
CC 40 – Own controller : VCO PITCH - Key Shift
Received value of the controller is converted to the value of VCO PITCH - Key Shift parameter
(see chapter 4.2.1). Values of the controller from 0 to 79 correspond to the parameter value directly.
Values of the controller from 80 to 127 are converted to closest valid value (i.e. 79). Value of the
parameter is set temporarily in edit buffer only (see pic. 4) – it is valid till the next change of the
controller or till reset of the device.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
18
CC 41 – Own controller : VCO PITCH - Aftertouch Bend
Received value of the controller from 0 to 127 corresponds to value of VCO PITCH - Aftertouch
Bend parameter directly (see chapter 4.2.2). Value of the parameter is set temporarily in edit buffer
only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 42 – Own controller : VCO MOD - Wave
Received value of the controller is converted to the value of VCO MOD – Wave parameter (see
chapter 4.2.3). Values of the controller from 0 to 3 correspond to the parameter value directly. Values
of the controller from 4 to 127 are converted to closest valid value (i.e. 3). Value of the parameter is set
temporarily in edit buffer only (see pic. 4) – it is valid till the next change of the controller or till reset of
the device.
CC 43 – Own controller : VCO MOD - Polarity
Received value of the controller is converted to the value of VCO MOD – Polarity parameter (see
chapter 4.2.4). Values of the controller from 0 to 3 correspond to the parameter value directly. Values
of the controller from 4 to 127 are converted to closest valid value (i.e. 3). Value of the parameter is set
temporarily in edit buffer only (see pic. 4) – it is valid till the next change of the controller or till reset of
the device.
CC 44 – Own controller : VCO MOD - Rate
Received value of the controller from 0 to 127 corresponds to value of VCO MOD – Rate
parameter directly (see chapter 4.2.5). Value of the parameter is set temporarily in edit buffer only (see
pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 45 – Own controller : VCO MOD - Modulation Wheel Amount
Received value of the controller from 0 to 127 corresponds to value of VCO MOD - Modulation
Wheel Amount parameter directly (see chapter 4.2.6). Value of the parameter is set temporarily in edit
buffer only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 46 – Own controller : VCO MOD - Aftertouch Amount
Received value of the controller from 0 to 127 corresponds to value of VCO MOD - Aftertouch
Amount parameter directly (see chapter 4.2.7). Value of the parameter is set temporarily in edit buffer
only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 47 – Own controller : VCO MOD - Retrig
Received value of the controller is converted to the value of VCO MOD – Retrig parameter (see
chapter 4.2.8). Values of the controller 0 and 1 correspond to the parameter value directly. Values of
the controller from 2 to 127 are converted to closest valid value (i.e. 1). Value of the parameter is set
temporarily in edit buffer only (see pic. 4) – it is valid till the next change of the controller or till reset of
the device.
CC 48 – Own controller : VCF CUTOFF - Frequency
Received value of the controller from 0 to 127 corresponds to value of VCF CUTOFF –
Frequency parameter directly (see chapter 4.2.9). Value of the parameter is set temporarily in edit
buffer only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 49 – Own controller : VCF CUTOFF - Keyfollow
Received value of the controller from 0 to 127 corresponds to value of VCF CUTOFF – Keyfollow
parameter directly (see chapter 4.2.10). Value of the parameter is set temporarily in edit buffer only
(see pic. 4) – it is valid till the next change of the controller or till reset of the device.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
19
CC 50 – Own controller : VCF CUTOFF - Velocity Amount
Received value of the controller from 0 to 127 corresponds to value of VCF CUTOFF – Velocity
Amount parameter directly (see chapter 4.2.11). Value of the parameter is set temporarily in edit buffer
only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 51 – Own controller : VCF CUTOFF - Aftertouch Amount
Received value of the controller from 0 to 127 corresponds to value of VCF CUTOFF –
Aftertouch Amount parameter directly (see chapter 4.2.12). Value of the parameter is set temporarily in
edit buffer only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 52 – Own controller : VCA LEVEL - Keyfollow
Received value of the controller from 0 to 127 corresponds to value of VCA LEVEL – Keyfollow
parameter directly (see chapter 4.2.13). Value of the parameter is set temporarily in edit buffer only
(see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 53 – Own controller : VCA LEVEL - Velocity Amount
Received value of the controller from 0 to 127 corresponds to value of VCA LEVEL - Velocity
Amount parameter directly (see chapter 4.2.14). Value of the parameter is set temporarily in edit buffer
only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 54 – Own controller : VCA LEVEL - Aftertouch Amount
Received value of the controller from 0 to 127 corresponds to value of VCA LEVEL - Aftertouch
Amount parameter directly (see chapter 4.2.15). Value of the parameter is set temporarily in edit buffer
only (see pic. 4) – it is valid till the next change of the controller or till reset of the device.
CC 55 – Own controller : VCA LEVEL - Volume Mode
Received value of the controller is converted to the value of VCA LEVEL - Volume Mode
parameter (see chapter 4.2.16). Values of the controller from 0 to 3 correspond to the parameter value
directly. Values of the controller from 4 to 127 are converted to closest valid value (i.e. 3). Value of the
parameter is set temporarily in edit buffer only (see pic. 4) – it is valid till the next change of the
controller or till reset of the device.
CC 56 – Own controller : CONTROL - Bender Mode
Received value of the controller is converted to the value of CONTROL - Bender Mode
parameter (see chapter 4.2.17). Values of the controller 0 and 1 correspond to the parameter value
directly (i.e. “MIDI” or “Instrument”). Values of the controller from 2 to 127 are converted to closest valid
value (i.e. 1). Value of the parameter is set temporarily in edit buffer only (see pic. 4) – it is valid till the
next change of the controller or till reset of the device.
CC 57 – Own controller : CONTROL - Indicator Mode
Received value of the controller is converted to the value of CONTROL - Indicator Mode
parameter (see chapter 4.2.8). Values of the controller from 0 and correspond to the parameter value
directly (i.e. “Off“, “Gate“, “MIDI-Msg“ or “Mod-Rate“). Values of the controller from 4 to 127 are
converted to closest valid value (i.e. 3). Value of the parameter is set temporarily in edit buffer only
(see pic. 4) – it is valid till the next change of the controller or till reset of the device.

SH2/9-M MIDI Interface for Roland SH-2 / SH-09
Model 8-437 ver. 1.0
Copyright © 2011 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
20
5.1.2.3. OWN CONTROLLER FOR INTERFACE’S FUNCTIONS CONTROL
CC 119 – Own controller : Reset
The controller allows to do hardware reset of the interface. Value of the controller must be
always 0 – the controller is unacceptable and it is ignored in other cases.
The interface is deactivated immediately after this controller receiving. All circuits of the interface
are set to default status as after the instrument is switched on. Interface doesn’t affect the instrument
and usage of instrument’s keyboard is allowed. This controller is equivalent to common system
command Reset (see chapter 5.2.1).
5.1.3. CHANNEL AFTERTOUCH
Channel Aftertouch command can affect instrument’s VCO, VCF and VCA in dependence on
setting of VCO - PITCH Aftertouch Bend, VCO - MOD Aftertouch Amount, VCF - CUTOFF Aftertouch
Amount and VCA - LEVEL Aftertouch Amount preset parameters.
The interface accepts whole range of command’s values from 0 to 127.
5.1.4. PITCH BEND (WHEEL)
Pitch Bend (Wheel) command can control instrument’s bender in dependence on setting of
CONTROL - Bender Mode preset parameter. In MIDI mode, frequencies of VCO and VCF can be
“bended” according to positions of potentiometers on instrument’s panel.
The interface accepts whole range of command’s values from
-8192 to +8191. However, only 12 bits
of command’s data are used
.
5.1.5. PROGRAM CHANGE
Program Change command switches the user presets of the interface. Only program numbers
from 0 to 23 are accepted and they correspond to presets numbers from 1 to 24. Program numbers
from 24 to 127 are ignored.
Always when acceptable Program Change command is received, instrument’s VCO is muted
and envelope generator (ENV) is switched off. When the next MIDI Note-On command is received, the
interface starts to work normally accordingly to the parameters of newly selected preset (program).
5.2. COMMON SYSTEM COMMANDS
5.2.1. RESET
When the Reset command is received, a complete hardware reset of the interface is executed –
all interface’s circuits are set to their default status (the same as after the instrument is switched on)
and they don’t affect the instrument at all.
5.3. SYSTEM EXCLUSIVE MESSAGES
The interface is equipped by the System Exclusive communication protocol, that enables bi-
directional data flow of the memory bulk dumps and some system functions. Detailed description of the
System Exclusive communication is in separate manual.
Attached CD-ROM contains software generator for creation of SysEx Messages for
communication between the interface and MIDI host system. The software generator can create easily
any kind of message necessary for control of the interface.