High End Systems DL.3, User Manual

Page: 388 / 394

APPENDIX D
362
DMX and RS-485 Projector Link
Cables: Belden 9841 or equivalent (meets specifications for EIA RS-485 applications) with the
following characteristics:
• Two 4-conductor twisted pairs plus a shield
• Maximum capacitance between conductors: 30 pF/ft
• Maximum capacitance between conductor and shield: 55 pF/ft
• Maximum resistance: 20 Ohm/100 ft
• Nominal impedance: 100–140 Ohm
Connectors: Two 5-pin male and female XLR connectors:
• Pin 1 Ground
• Pin 2 Data–
• Pin 3 Data+
• Pin 4 Secondary data–
• Pin 5 Secondary data+
Terminator: 5-pin male XLR connector with a 120 Ohm terminating resistor fitted between
pins 2 and 3.
positive
(data true)*
negative
(data
complement)*
Common
(cable shield)
Male XLR Connector
Female XLR Connector
positive
(data true)
negative
(data
complement)
XLR shell
Common
(cable shield)
positive
(data true)*
negative
(data complement)*
negative
(data
complement)
positive
(data true)
*This data line is not used by the fixture, but allows data to pass through the fixture.
Grounding lug (inside XLR shell)
2
1
3
1
2
3
4
5
5
4
1
2 0
1
2
3
4
5