AMX ProLink PRO-DP8, Instruction Manual, Page: 13 / 66

Introduction
5
AMX Lighting PROlink/AXlink Programming
One way to solve many of these problems is to apply different control curves to each dimmer and to
provide a variable low-end cutoff point.
A dimming curve is a graphical or electronic representation of the amount of control that must be
applied to a dimmer in relation to the dimmer output. It is like a directional map that the controller
follows. The amount of control is typically measured in percent; from an Off-state of level 0 to an
On-state at level 100. Dimmer output is measured in volts. A graphical representation of a dimming
curve is usually the percentage of dimming in relation to the output voltage (RMS) of the dimmer
connected to a standard load. FIG. 4 shows a sample dimming curve.
Sometimes a fixture or lamp has a problem dimming down to a low range. When this happens the
lights can flicker and cause unwanted dimming performance. To correct for anomalies in the
dimming performance of various devices, the AMX Lighting controller has provisions to
individually set a low-end trim for each of the six dimming channels. The AMX Lighting dimming
system employs a low-end cutoff that allows the dimmer to turn on to a specified level or to dim
down to a specific level. The level at which the dimmer turns on is called the Low End Setting. Low
End commands prevent the dimmer from going below a set threshold. They also force the dimmers
on to the preset threshold. That is useful for some transformer loads and track lights.
FIG. 4 Sample dimming curve
Refer to Appendix C: AMX Lighting Curves for more information.