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Backlight Dimming Operation
The Backlight Brightness adjustment allows the operator to adjust the Backlight Brightness
of the display from Minimum Brightness to Maximum Brightness depending on the user’s
needs. The Backlight Brightness level can be adjusted by the Remote Brightness push
button controls or Front Panel Brightness controls.
NOTE: The remote Brightness Potentiometer is used as a scaling function to set
the LCD max brightness and should not be used to adjust the brightness
level of the backlight.
The remote Brightness Potentiometer must not
be connected for ECDIS operation.
The brightness adjustment range can be set using the SCOM interface Backlight Minimum
Value Command (BRI) and Backlight Maximum Value Command (BRM). Using these
commands the min brightness can be set to a value higher than full OFF and the max
brightness can be set to a value less than max brightness. The Front Panel adjustment
brightness buttons and brightness knob and the Remote brightness buttons will adjust the
unit brightness between the set min and max values.
The Brightness Command (BRT) can be used to set the Backlight Brightness to any value
from full OFF to the MAX Brightness setting.
Care must be exercised when using the ‘BRI’, ‘BRM’ and ‘BRT’ commends so that the
operator is not prevented from setting the ECDIS calibration value.
The Backlight brightness setting is saved by the firmware ten minutes after the last
adjustment.
Front Panel LED Indicator Dimming Operation
The Front Panel Indicators, POWER, STANDBY and the three ECDIS LED indicators are
adjustable from full ON to low brightness but not OFF. The Front Panel indicators are
dimmable in conjunction with the Backlight Brightness adjustment using the same controls.
