DMX/MIDI to RSP
Protocol converter
For the Challenger, Discovery and Defender
Ranges
Instruction Manual
12/02/16
dmxconv.doc
Abbreviations used
DMX
MIDI
RSP
Digital Multiplex
Music Instrument Digital Interface
Ryger Serial Protocol
Connections
Mains Input
The unit comes supplied with a British type mains lead and plug. If you have a different type of socket you
will have to change this plug .The wire colour code is as follows :BROWN
YELLOW / GREEN
BLUE
LIVE
EARTH 
NEUTRAL
WARNING
If you remove the plug for a hard wired installation the power feed into this unit MUST be fed via a means
of isolation.
MIDI Input
The Midi input is a standard isolated midi connection via a male 5 pin din socket , wired as follows :PIN
1
2
3
4
5
FUNCTION
N/C
N/C
N/C
MIDI +
MIDI -
DMX Input
The DMX input is an unterminated input presented on a 5 pin female XLR connector wired as
follows:PIN
1
2
3
4
5
FUNCTION
ETH/0V
DATA DATA +
N/C
N/C
DMX Conversion
Version 2.1
CHANNEL ALLOCATION
The DMX converter will take either 6 or 8 channels from the DMX stream for each head.
These are used as follows:- X position, Y position, Colour select, Gobo select, X Y Speed, Power and
Control (8 channel only).
Up to 8 Heads can be controlled from one DMX converter. The DMX converter can be switched to
accept DMX starting channels as follows :- 1 , 65 , 129 , 193 , 257, 321, 385 and 449 . The converter
will take either a 6 channel DMX control or an 8 channel control to suit your own DMX desk. In six
channel mode the CTRL functions are disabled.
By cascading eight DMX converters , 64 Head 's can be controlled from one DMX512 stream over 8
RSP links.
Channel allocation Example 8 channel
If DMX channels 65-128 are selected
DMX Channels RSP Channels
Description
65-72
73-80
81-88
89-96
97-104
105-112
113-120
119-128
1
2
3
4
5
6
7
8
Channel allocation Example 6 channel
If DMX channels 65-112 are selected
DMX Channels RSP Channels
Description
65-70
71-76
77-82
83-98
89-94
95-100
101-106
107-112
1
2
3
4
5
6
7
8
X ,Y ,COLOUR , GOBO, SPEED, POWER
X ,Y ,COLOUR , GOBO, SPEED, POWER
X ,Y ,COLOUR , GOBO, SPEED, POWER
X ,Y ,COLOUR , GOBO, SPEED, POWER
X ,Y ,COLOUR , GOBO, SPEED, POWER
X ,Y ,COLOUR , GOBO, SPEED, POWER
X ,Y ,COLOUR , GOBO, SPEED, POWER
X ,Y ,COLOUR , GOBO, SPEED, POWER
DIP SWITCH SETTINGS FOR DMX CONVERSION
6 channel conversion
DIP1
DIP2
DIP3
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
ON
8 channel conversion
DIP1
DIP2
DIP3
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
ON
UNIT
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , CTRL, N/A
DIP4
OFF
OFF
OFF
OFF
ON
ON
ON
ON
DIP5
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
DMX CHANNELS
1-48
65-112
129-176
193-240
257-304
321-368
385-432
449-496
DIP4
OFF
OFF
OFF
OFF
ON
ON
ON
ON
DIP5
ON
ON
ON
ON
ON
ON
ON
ON
DMX CHANNELS
1-64
65-128
129-192
193-256
257-320
321-384
385-448
449-512
Note DIPS 6,7 & 8 are not used in DMX operation and should be all set to OFF.
Head 1
Head 2
Head 3
Head 4
Head 5
Head 6
Head 7
Head 8
UNIT
Head 1
Head 2
Head 3
Head 4
Head 5
Head 6
Head 7
Head 8
CTRL INFORMATION 8 channel only
Hex
00H
01H
02H
03H
04H
05H
06H
10-1FH
20-2FH
30-3FH
40-4FH
50-5FH
FEH
FFH
Decimal
000
001
002
003
004
005
006
16-31
32-47
48-63
64-79
80-95
254
255
Operation
Notes
Normal Operation
Strobe
Wobble
(gobos 2-19 only)
Fade in
Fade out
Gobo blanking on
(default)
Gobo blanking off
Colour spin speed
16 Fast - 31 slow (Discovery only)
Gobo spin speed
32 Fast - 47 slow (Discovery only)
Strobe speed
48 Fast - 63 slow (Discovery only)
Fade in speed
64 Fast - 79 slow (Discovery only)
Fade out speed
80 Fast -95 slow (Discovery only)
Standby (Challenger 250 only)
Reset head
DMX NOTES
1. The connector for DMX is a 3 pin male XLR type , Pin 1 Shield, Pin 2 Data - , Pin 3 Data+.
2. The DMX input conforms to USITT DMX512/1990
3. The controller must send all of the 48 or 64 channels selected, even if they are not used.
4. Sending 254/255 in the Colour byte will cause a roto colour effect.
5. Sending 245/255 in the Gobo byte will cause a roto gobo effect.
6. Care must be taken when using the 8 channel mode that the control byte does not receive full on
(255) as this will cause the head to reset. If you cannot directly control the DMX values sent to this
channel we suggest that the 6 channel mode is used.
________________________________
MIDI Conversion
CHANNEL & KEY / CONTROL CHANGE ALLOCATION
The midi conversion will take 64 keys or 64 control changes in one of the 16 midi channels and convert
them into 8 RSP channels. Each RSP channel requires 8 keys or control changes as listed
below . The Keys / Control changes recognised can be set to respond to the following ranges 0-63 , 64127 and 36-100.
Key / Control change allocation
X Position , Y Position, Colour ,Gobo X Y Speed ,Power
and 2 channels reserved for future use.
Control change / Key Allocation Example
If the converter is set to respond to key on information for keys 36-100.
Key
RSP Channels
Description
36-44
45-52
53-60
61-68
69-76
77-84
85-92
93-100
1
2
3
4
5
6
7
8
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A, N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A , N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A , N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A , N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A , N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A , N/A
X ,Y ,COLOUR , GOBO, SPEED, POWER , N/A , N/A
UNIT
NOTES ON MIDI IMPLEMENTATION
1. Input as per accepted MIDI standards on 5 pin female DIN connector . Pin 4 + , Pin 5 2. The Timing clock used for midi signal recognition. (not essential).
3. Only key on or control change messages are converted to RSP .
4. Key Off is not recognised.
5. Sending 126 in the colour or gobo bytes will cause a colour or gobo roto effect.
Head 1
Head 2
Head 3
Head 4
Head 5
Head 6
Head 7
Head 8
DIP SWITCH SETTINGS FOR MIDI CONVERSION
DIPS
1
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
2
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
3
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
4
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
5
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
MIDI CHANNEL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DIPS
6
OFF
ON
OFF
ON
7
OFF
OFF
ON
ON
KEYS/CTRL CHANGES CONVERTED
0-63
64-127
36-100
36-100
DIP 8
OFF
ON
KEY information converted.
CTRL CHANGE information converted.
LED operation.
If DMX is selected the Right led will be lit. The led will flash when valid DMX is received.
If MIDI is selected the Left led will flash slowly . The led will flash quickly when valid
MIDI is received.
RSP NOTES.
RSP (Ryger Serial Protocol) is presented on a 3 pin Female XLR connector
Pin 1 Data + , Pin 2 Data - , Pin 3 Screen.
Fuse changing

The unit is protected by a single internal mains fuse. If this should blow for any reason.
Disconnect the power to the unit. To change the fuse , remove the 4 retaining screws holding the
lid, then remove the lid. Replace the fuse. Replace the lid.
Do not apply power to the unit when the lid is removed.
MIDI Implementation chart for MIDI to RSP
Version 1
Function
Recognised
Basic
Channel
Default
Changed 1-16
1-16
Remarks
Settings from Dips 2-6
Settings from Dips 2-6
Mode
Ignored
Note
Number
0-63
64-127
36-100
All Ignored
Dip 6 OFF & 7 OFF & 8 OFF
Dip 6 ON & 7 OFF & 8 OFF
Dip 7 ON & 8 OFF
Dip 8 ON
0-127
Ignored
Only with Dip 8 OFF
always
Velocity
Note on
Note off
After
Touch
Ignored
Pitch Bender
Ignored
Control
Change
0-63
64-127
36-100
yes
yes
yes
Ignored
Prog
Change
Ignored
System Exclusive
Ignored
System common
Ignored
System Real time
0-7
Aux. Messages
Ignored
Dip 6 OFF & 7 OFF & 8 ON
Dip 6 ON & 7 OFF & 8 ON
Dip 7 ON & 8 ON
Dip 8 OFF
Midi present indication for midi led
Specification
Power
Weight
Fuse
DMX in
Minimum DMX Channels used
MIDI in
RSP Channels
220/260Vac 50/60Hz
720g
5A Quick Blow
Buffered EIA485 standard 250K Baud, USITT DMX512
48 6 per head.
Isolated ,MIDI Spec ,31.25 K Baud
8
The DMX converter conforms to EN 60730-2-4, EN60335-1, EN50082 and EN55014
 1995
Ryger Ltd – Feidr Castell – Fishguard – Pembs – SA65 9BB – UK
T: +44 (0)1348 875378
F: +44 (0)1348 874963