
ETC Programming Guide
Source Four Dimmer/ES750/ES1
Source Four Dimmer Programming Guide Page 3 of 3 Electronic Theatre Controls, Inc.
Dimmer Curves
There are three available dimmer curves that can be set on the dimmer. These curves can only be set
through the RDM interface.
• ETC Modified Square - A more uniform response to control level changes. This is set as the
default curve.
• Preheat - Same as Modified Square but allows for a minimum level to be set to the curve to
maintain a warm lamp, reduce inrush and lengthen lamp life.
• Linear - matches control level increase to dimmer voltage 1:1.
Output Rating
Refer to the table below to determine the maximum wattage lamp you can use with your dimmer.
Input Voltage
Output Voltage
Setting
Maximum Wattage
115V 115V 750W
230V 115V 750W
230V 230V 1500W
WARNING:
The ES750 can ONLY be wired to tungsten lamps. Wiring to any other load type will
cause dimmer failure.
Note:
To maintain a correct dimmer curve, the dimmer must have a minimum load of 100W.
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