ETC CEM3 v1.5.1 - Manual (Page 31)

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System Reference 25
Modified Linear (Mod-Linear)
A modified linear curve reduces the voltage change at low control levels for better
performance in low-wattage fixtures.
Square Law (Square)
At low control levels, much of a traditional incandescent fixture’s light output is in the
invisible infrared spectrum. This results in poor visible response to low control levels. A
square law curve applies a multiple derived from the square root of the control level (with
full output equal to 1.00) to increase voltage response at low control levels to compensate
for the infrared loss.
0 20 40 60 80 100
0
20
40
60
80
100
Control Input (%)
Dimmer Output (%)
0 20 40 60 80 100
0
20
40
60
80
100
Control Input (%)
Dimmer Output (%)