AMX ProLink PRO-DP8, Instruction Manual, Page: 50 / 66

Appendix B: AMX Lighting Curves
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AMX Lighting PROlink/AXlink Programming
The RAD-VDR module uses a combination of the second and third dimmer characteristic to send a
variable low-voltage control signal along with a single switched output. This module is commonly
used for control of dimmable fluorescent ballasts.
Curves can be used for energy saving applications where the high end needs to be trimmed to
reduce voltage to the lamps and thereby increase lamp life. They can also be used to reduce the
dimming range of some fluorescent ballasts, which can prevent premature failure of the ballasts and
lamps.
The AMX Lighting system now offers over 12 ways to alter the performance of the lighting fixture
by digitally changing the way the dimmer responds. Using the RAD-VDR module, for instance, to
control an 0-10 volt ballast applied to a single compact fluorescent light fixture might 'look' better
when dimmed using one curve instead of another. After the furniture is installed the designer may
decide that a different curve applied to certain fixtures has a better 'feel.' It is now possible to apply
many new curves to all the AMX Lighting dimmers using simple commands. Designers and
specifiers have much more control over the look and feel of their designs using the AMX Lighting
system. Installers will have greater ability to temper the output of a dimmer to avoid problems.
FIG. 14 shows a standard dimming curve.
As the dimming level increases the output voltage increases. The dimmer goes smoothly from 0 to
120 volts output. This is the most common curve used in dimming applications.
! Relay turn on level = 1%
! Dimming Range = 0 - 120 VAC.
FIG. 15 shows the curve 1 voltage output in volts DC.
FIG. 14 Standard dimming curve
FIG. 15 Curve 1 Voltage output in Volts DC