Table 5-17 Lighting Bus Configuration Procedure - Enhanced (Display); Figure 5-9 Enhanced Lighting Mode Example Photocell - Garmin GI 275 Installation Manual

Figure 5-9 Enhanced Lighting Mode Example Photocell

Table 5-17 Lighting Bus Configuration Procedure - Enhanced (Display)

Step
1 Under Source Selection, set Display Source to Lighting Bus.
Under Lightning Bus Configuration, set the Input Type to match the aircraft lighting bus voltage, and set
2
the Response Time to a value between 0 - 7 seconds.
3 Touch Enhanced Lighting Mode on. The button should be highlighted green.
Touch Lighting Curve Configuration → Display Lighting Day Mode and set the Transition percentage
4 to 5% (refer to Figure 5-10). Below this set value, the display brightness will be controlled by the
photocell.
Set the dimmer knob to the off position. The Source Input level (%) must be below the transition point set
5
previously.
Touch the Curve button to change it to the Photocell Backup option (refer to Figure 5-11).
6
NOTE: The Max Level and the Min Level set in the next steps will also set the max and min levels for the
dimmer mode operation curve.
Simulate night conditions in the cockpit by using blankets or a similar method, such that the cockpit can
7
be made progressively brighter for steps 8 and 9.
Set the Min Level and Vertex 1 while the panel is experiencing night conditions. The level adjustments
can be made by selecting Vertex ( ) and changing the values (refer to Figure 5-12). Seek consistency
between all cockpit lighting.
8
NOTE: A vertex represents a specific output value based on a given input value, where the goal is to
customize the lighting curve by manipulating the vertices.
Set the remainder of the vertices while progressively introducing light to the interior of the aircraft. Set the
9 Max Level as desired. It is recommended to configure this curve to make sure the display reaches the
desired max output level (%) prior to 100% input. A linear curve for the photocell typically works well.
Touch the Curve button to change it to the Lighting Bus option (refer to Figure 5-11). This sets the curve
10
for the dimmer bus functionality.
11 Verify functionality of dimmer knob. Re-adjust Transition point if/as required.
190-02246-14
Rev. 11
Display (Left) and Knob (Right)
Lighting Bus Day Mode Curve - Display
GI 275 STC EIS & MFD Installation Manual
Page 5-25