Martin Imager Series, Operator'S Manual

Page: 16 / 84

16 Installation
7 Clamp the ground wire running from the luminaire to the green terminal (at
position 6) to the J-Box using the screw provided (illustrated here).
8 Push the clamp terminals in the J-Box into the holes that are provided so
that they click into place.
9 Connect the data cable from the Imager
luminaire to the data connector in the J-Box.
This can be found just behind the RJ-45
connectors.
10 Perform any necessary steps in “Data linking
multiple fixtures”.
Data linking multiple fixtures
You need to create a data link if you are going to be:
• Operating multiple Imagers in a synchronous way
• Controlling more than one fixture via a DMX control device
• Programming multiple fixtures via the IR receiver and IR remote control
Creating a data link
The data transmission rate (250 kbits/s) used by DMX512 requires the
selection of a cable which does not significantly distort the signal or give rise
to spurious signal reflections. Cables intended for use with audio systems
(microphone cables), while having the convenience of flexibility, availability
and relative low cost, are NOT suitable for use with DMX512 because of
their high capacitance and incorrect characteristic impedance; at DMX512
d a t a r a t e s t h i s w i l l g i v e r i s e t o b i t t i m e d i s t o r t i o n a n d s i g n a l
reflections/overshoot.