ETC Installation Guide
Forward-Phase Dimmer–Gen 2
Set the Dimming Mode
Use the Dim Mode button to manually set the dimming mode or to enter
Fluorescent Voltage Adjustment mode. The related LED indicates which mode
is currently active.
Press the Dim Mode button to toggle the dimming mode:
•
Linear: The linear curve matches the control input percentage to Root
Mean Squared (RMS) voltage output. Each percent increase in control
level increases dimmer voltage output by the same amount.
0
20
40
60
80
100
0
20
40
60
80
100
Control Input (%)
Dimmer Output (%)
•
Modified Square Law (Mod-Square): A standard square law curve
may overcompensate for infrared loss, resulting in “steppy” response
to incremental control changes at low levels. This modified square law
curve applies a second multiple to the standard square law curve for
more uniform response to control levels changes across the entire
range of dimmer output.
0
20
40
60
80
100
0
20
40
60
80
100
Control Input (%)
Dimmer Output (%)
The Dim Mode LED provides visual status of the selected dimming mode:
•
Green = Standard (modified square law) dimming curve (default
setting)
•
Red = Fluorescent (linear) dimming curve
Forward-Phase Dimmer–Gen 2
Page 9 of 12
ETC