NEBULA OPERATION 31
For convenience in initial installation and testing, each Nebula and Wallplate is also fitted with a loop-through RJ45
connector. However the loop-through method of wiring should not be used on any permanent installation as every connection
contributes a possible failure point. The most reliable method of connection is to tap a short break-out of length say 300 mm
onto the data cable
without cutting or nicking the main data cable
. As CAT 5 cable is composed of solid rather than stranded
conductors, the cable should be subjected to a as little flexing as possible during installation.
High quality RJ45 connectors should be used to ensure a secure connection for each Nebula or Wallplate onto the
common data line. On long runs, the last devices at opposite ends of the data line must be terminated with a 120 ohm resistor
to keep reflections and noise to a minimum.
THEATRELIGHT WALLPLATES
The Theatrelight Wallplate is a simple 6 key intelligent lighting controller for use with Theatrelight Dimmers such as Nebula,
Meteor and Quasar. The Wallplate is designed to be mounted in a standard 86mm square back box. The Wallplate is available
in white or black. It is fitted with 6 push buttons, each key backlit with a blue LED. Other colour LEDs can be supplied to
customer specification. Key legend can be engraved and paint filled, or laser etched to customer specification. Wallplates can
also be silk-screened in wear resistant epoxy ink for larger order quantities.
WALLPLATE ELECTRONICS
Each Wallplate is run by an ultra low power microprocessor, which scans the keys and pre-set dipswitch settings, drives
the LEDs, and transmits the appropriate commands to the data bus. The microprocessor also receives and interprets
commands sent by other Wall plates or Nebulas such as scene, area, link, and master commands. All commands whether
from its own keys or from remote Wallplates are stored in flash memory after a short time interval, so that at power-on, each
Wallplate wakes up in the state it was in when it was turned off. For further details, and for help setting up a system with
Nebula dimmers, refer to the Theatrelight Wallplate Instruction Manual on www.theatrelight.co.nz
REMOTE CONTROLLED SCENES
To link a number of Nebulas together for remote control of scenes over a large number of dimmers, each Nebula must be
connected to the common data cable. Then each Nebula must be set up as follows
1. Each Nebula must be set with Local Scenes and Remote Scenes set On.
2. Each Nebula must be set to an Area ID which matches the remote scene command, whether from other
Nebulas, Theatrelight Wallplates, or remote computer.
3. Each scene in each Nebula must be programmed for its correct playback levels and fade times.
Summary of Contents for NEBULA
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