Manual Number 9019161
Revision A, September 9, 2020
25
Dimming Curve (continued)
The best method for setting the dimming curve is to simulate the range of lighting conditions
while adjusting the display brightness. This is best done after installation, in the actual
aircraft instrument panel, but can be simulated in various environments.
Dimming Curve Programming Process: (after selecting the Dimming Curve menu item)
1. Provide a brightness input to the unit, starting with the lowest expected input
a. If using an external input, use a zero volt input (or off).
b. If using automatic dimming (“Internal”), this is like a nighttime cockpit
2. Adjust the Control Knob to increase or decrease the brightness of the display to the
desired level at that lighting condition (the point will move up or down, respectively).
The numeric value of the dimming point is displayed in green left of the vertical axis.
3. When satisfied, press the Control Knob.
4. The next point will be highlighted green.
5. Repeat Steps 1-4 for each point on the graph. For each point, change the lighting input
(indicated by the vertical blue line) to approximately match the highlighted point on the
graph. Then adjust up or down.
6. For units set to an External input, the final dimming point is the minimum input
threshold. It is represented by a vertical white line. Turning the Control Knob will move it
left or right. When satisfied, press the Control Knob.
7. After the last dimming set point, pressing the Control Knob will exit the Dimming Curve
page and return to the Configure Dimming menu.
