ETC CEM3 v1.5.1 - Manual (Page 17)

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System Reference 11
Circuit
A circuit is a user assignable number, between 1 and 99999. the circuit is the reference
number for that dimmer in the rack. Circuit numbers must be unique per space; it is possible
to have multiple circuits of the same number, but they must be in different spaces.
Configuration
The rack configuration is a collection of all of the data stored about the rack and all of its
circuits. The configuration is stored automatically in the CEM3 whenever you make a
change (for example, changing a circuit from switched to dimmed).
The configuration of any rack is automatically stored on both the CEM3 module and the
CEM3 backplane. Therefore, you can remove a CEM3, replace it with a new, unconfigured
CEM3, and the configuration from the backplane will be loaded to the new CEM3.
You can save and load rack configurations by connecting a USB removable media device
to the USB port on the front of the module. Saving and loading are performed from the File
Operations menu (see File Operations, page 18 ).
Dimmer Doubling (UL/ 120V 60 Hz systems only)
ETC’s Dimmer Doubler™ technology allows you to double the number of controllable
circuits in your system without adding dimmer modules or running additional cable. The key
to this feature is the Dimmer Doubler two-fer.
The Dimmer Doubler two-fer is installed between a Sensor dimmer module and two ETC
Source Four 77 volt fixtures. It splits the output of a single dimmer into two, separately
controlled outputs.