Construction Of The Signal Cable; Cables Connections - SGM Giotto 1500 Instruction Manual

GB

2.6 Construction of the signal cable

Giotto 1500 Shas a DMX 512 input fitted which uses standard XLR 5 Pins connector.
For the connection use screened cables having the EIA RS-485 specifications with the following
features:
2 conductors plus screen
120 ohm impendance- low capacity
Max transmission speed 250 Kbaud.
C
ABLES CONNECTIONS
ATTENTION!!
The screened parts of the cable (sleeve) must NEVER be connected to the system's
earth, as this would cause faulty fixture and controller operation.
Example of connection of the DMX line:
DMX Termination
(Last fixture)
To avoid the risk of faulty operation, follow these indications:
Maximum cable length: 500 m
Max. N° of fixtures connected: 32 units
Cable runs: Avoid running cables alongside power supply lines.
Termination: A 120 Ohm resistor between Pins 2 and 3 on the last fixture..
Giotto 1500
See illustration, taking care with the screen, which must be connected
to Pin 1
DMX Line DMX Line
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SGM
User's Manual 1.02