Appendix D: Dmx To Midi Adaptor; Appendix E: 2 X Dmx, Midi Signal Combiner - Jands Event 4 Technical Manual

Circuit Diagrams and Overlays

Appendix D: DMX to MIDI adaptor

A DMX to MIDI adaptor cable is required to run some of the Auxiliary tests contained in the Boot
ROM. The adaptor should be wired as shown:
DMX pin
3
2
1

Appendix E: 2 x DMX, MIDI signal combiner

A DMX /MIDI combiner circuit is required to run some of the Auxiliary tests contained in the
Boot ROM.
From DMX1 output
1
2
3
From DMX2 output
1
2
3
From MIDI output
220R
R1
4
5
Revision 1 - 07 July
1999
MIDI pin
5
4
2
IC1 VCC
75176
8
VCC
R4
10K
R5
5
10K
IC2 VCC
75176
8
VCC
R2
10K
6
7
R3
5
10K
R9
270R
VCC
OPTO1
6
H11N1
1 4
D1
1N914
2
5
Detail
connect with 220R 0.25W 5% resistor
direct connection
direct connection
From Keyboard Input
VCC
C1
100nF
VCC
IC3A
74HC10
1
2 12
13
VCC
Event 4
5
4
VCC
IC3B
R7 220R
74HC10
3
4 6
5
R6 220R
IC3C
74HC10
9
10 8
11
TECHNICAL MANUAL
D - 1
To MIDI Input
5
4