Lcd Brightness Control - Aspen Avionics Evolution Backup Display EFD1000 Pilot's Manual

5.4. LCD Brightness Control

The LCD brightness of the EBD operates in either of two modes, Automatic or Manual
(Figures 5-27 and 5-28). The LCD brightness range is displayed as a value from 1–100,
displayed above the Bottom Knob.
LCD MODE DESCRIPTION
AUTOMATIC LCD backlight intensity is automatically adjusted based on the ambient
lighting conditions sensed by the Automatic Dimming Photocell (Figure
BRT AUTO
5-27). When using the auto-brightness, the maximum brightness level is
70%.
Allows the pilot to adjust the LCD backlight intensity. (Figure 5-28) from
MANUAL
BRT ADJUST 1–100%.
Table 5-22
Brightness Control
Change Brightness Mode
1. Press the MENU Button.
2. Press the Bottom Knob to select the desired LCD Brightness Control mode,
either Automatic (BRT AUTO) (Figure 5-27), or Manual (BRT ADJUST) (Figure
5-28).
3. Press the MENU Button to exit.
Adjust Display Brightness Manually
Switch to manual LCD Brightness Control mode (BRT ADJUST) (Figure 5-28).
1.
2. Rotate the Bottom Knob clockwise to increase the display brightness or
counterclockwise to decrease the display brightness. The BRT: value changes
accordingly.
3. Press the MENU Button to exit and retain the selected brightness level.
091-00027-001 REV A
091-00027-001 Rev A EBD Pilots Guide V&H .indb 17
Figure 5-27
Display Brightness in
BRT AUTO Mode
When the EBD is operating on the internal battery,
the maximum brightness level is capped at 40% in
automatic mode and 70% in manual mode to preserve
battery operating time.
To facilitate cooling of the EBD display unit, when
the backlight temperature is greater than or equal to
70°C, the display brightness level is limited to 30% in
automatic mode and 70% in manual mode. The limits
are removed when the EBD display temperature drops
below 60°C.
Evolution Backup Display Pilot's Guide
Figure 5-28
Display Brightness in
BRT ADJUST Mode
NOTE
NOTE
Page 5-17
8/27/14 8:51 AM