Operating instructions

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CONNECTION THE DATA LINK (DMX 512)
The connection of the DMX signal to the Sirio RAY 1200/1800 must be made by using the signal input XLR 5 pin
connectors which are located on the control panel of the fixture. (pict.5)
The pin nomenclature of the connectors for the connection to the DMX signal is listed in the table. (pict.5a)
In order to avoid any problem in the signal transmission, it is warmly suggested to use a cable for high speed data
transmission (sect. 2x0.25 + gnd).
If the lines have a total length over 150-200 mts it is suggested to use a signal amplifier.
The usage of a normal microphonic or audio cable is suggested only for lines max 100 mts long.
To ensure the IP54 rate you must connect the DMX cable inside the base. Use the given cables fixing (pict. 5b)
and connect by following the cables numbering (pict. 5c).
fig.5
fig.5a
fig.5c
fig.5b
DMX 512 TERMINAL LINE
The wrong connection of the terminal line or its non-connection are probably the most frequent reasons for the
defective functioning of the DMX line. The terminator is a resistor fitted between the two “data” lines (pins 2 and 3 of
an XLR 5 pin connector) at the end of the cable furthest from the transmitter. The terminator resistor should have the
same value as the impedance of the connection cable.
We suggest to use a terminal with a 100 Ohm resistor.
It is recommanded that all DMX 512 systems have the termination resistor at the and of the line.
EXAMPLE 2: connection controller-spot to one DMX 512 output over 150mts long
EXAMPLE 1: connection controller-spot with 1 DMX 512 output
CONTROLLER DMX
SPOT
SPOT
LAST SPOT
SPOT
LAST SPOT
SPOT
CONTROLLER DMX
SIGNAL
AMPLIFIER
TERMINATION
RESISTOR
TERMINATION
RESISTOR