Glossary - ETC SR12D Installation Manual

Glossary

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Auxiliary Bay: The cabinet on the right housing the load circuit breakers and
phase disconnect switches or phase bus bar connections.
Auxiliary power: 12Vdc operating power supplied to peripheral devices on a
control data network.
CEM: The Control Electronic Module for a Sensor CEM dimming system. CEM
systems enable multiple DMX512 inputs and addressing modes and
support ETCLink.
Data network: Light gauge wires, usually shielded, that carry digital
information instead of operating power.
Delta dimmer rack: The cabinets, cooling and distribution system.
Dimmer channel: An individual circuit used to set lighting levels.
Dimmer circuit: The load wiring and fixtures connected to a single dimmer.
Dimmer module: A slide-in cartridge containing one or two dimmer channels.
Dimmer slot: The rails and circuit connections in a dimmer rack that individual
dimmer modules slide into during installation.
DMX512:The established data protocol for digital control of dimming systems.
A DMX512 signal carriers up to 512 dimmer channels – each with an
intensity level from 0-255.
ETCLink: A digital E
CHELON
information, including console-specific and dimmer-specific data,
between components of a Sensor system. ETCLink components include
CEMs and ETClink consoles, PCs or peripheral devices.
Line voltage (power): Phase voltage delivered to a dimming system from the
installation main supply, usually municipal power.
Line wiring: Main power cables installed into the phase and ground busses of
the dimmer rack delivering line voltage.
Load voltage (power): Voltage controlled by a dimmer, delivered to fixtures on
a dimmer circuit.
Load wiring: Power wiring installed between a dimmer and its loads, forming
the dimmer circuit.
Module Bay: The cabinet on the left housing the rack modules, cooling fan and
signal distribution circuits.
Network termination: A resister or resistive network installed on a data wires
to reduce data interference by attenuating spurious signals.
Port: DMX512 input ports. Each CEM in the rack has two DMX input ports
labeled port A and port B.
SR12D: A twelve slot Sensor Delta dimmer rack.
SR24D: A twenty-four slot Sensor Delta dimmer rack.
SR48D: A forty-eight slot Sensor Delta dimmer rack.
® L T ® network that carries system status
ON ALK
Electronic Theatre Controls, Inc.