Operating instructions

Pag. 6 http://www.coef.it - info@coef.it
CONNECTION TO THE MAINS POWER AND TO THE DMX SIGNAL / REPLACING FUSES
To connect the Sirio 150 / 150DV to the mains power, remove the cover located behind the fixture, and connect
the cable to the electronic board as shown in pict. 3.
The connection to the DMX signal to the Sirio 150 / 150DV must be made by using standard DMX cables as
shown in pict. 3/a
In order to avoid any problem in the signal transmission, it is warmly suggested to use a cable for high speed data
transmission.
The usage of a normal microphonic or audio cable is suggested only for lines max 100 mts long.
If the lines have a total length over 150-200 mts it is suggested to use any DMX Repeater Amplifier
HIGH VOLTAGE!
Always disconnect the mains supply before opening the connections
area. To ensure the IP66 rate choose the correct size of the cables (from 3 to
6.5 mm.)
MAINS VOLTAGE CABLE 230Vac/
DMX CABLE
Fig. 3/a
Fig. 3
DMX 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 terminal resistor fitted at the end of the cable furthest from
the transmitter.
The terminal 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 terminal resistor fitted in the DMX output of the last fixture.