Garmin GNC 420AW Installation Manual - page 91
400W Series Installation Manual
Page 5-11
190-00356-02
Rev. E
SLOPE
Sets the sensitivity of the display brightness in proportion to changes in the input level. The higher the
number, the brighter the display is for a given increase in the input level. This field has a range of 0
(zero) to 99, and is set to 50 at the factory.
OFFSET
Adjusts the lighting level up or down for any given input level. This field has a range of 0 (zero) to 99,
and is set to 50 at the factory. This may also be used to match lighting curves with other equipment in
the panel.
NOTE
If a lighting bus (any selection other than
PHOTO
) is selected, and the lighting bus
control is turned to its minimum (daytime) setting, the display brightness tracks the
400W Series unit’s photocell using additional parameters (PHOTO TRANS % and
PHOTO SLP/OFFST) described below.
PHOTO TRANS % -
(Photocell Transition Percentage) When a lighting bus is used to control the
lighting of the display (see Figure 5-10), this parameter sets the point on the lighting bus control below
which the display brightness tracks the 400W Series unit’s photocell. This field has a range of 0 (zero) to
99, and is set to 25 at the factory.
PHOTO SLP/OFFST -
(Photocell Slope/Offset)
These fields are equivalent to the SLOPE/OFFSET fields described above, with the exception that they
only control the display lighting characteristics when the lighting bus control is below the level specified
in the PHOTO TRANS % field. Both fields have a range of 0 (zero) to 99, and are set to 50 at the
factory.
5.3.8
GPS DATE/TIME SETUP Page
This page displays the GPS date and time. (see Figure
5-11).
Figure 5-10. MAIN LIGHTING Page
(Display Lighting from Lighting Bus)
Figure 5-11. DATE/TIME SETUP Page