Garmin GNS 400W, Pilot'S Manual & Reference

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176 190-00356-00 Rev G
The following setup items are available:
Display — allows you to adjust the display for
optimum viewing in any condition. Automatic back-
lighting is available which uses a built-in photocell
(at the top left corner of the display bezel) to make
the proper display adjustments without any user
intervention. Automatic contrast adjustment varies
the screen contrast level based upon current unit
temperature. You may also select manual control of
the display contrast and backlighting to tailor the
400W-series unit display to your needs.
NOTE:
Display backlighting changes are not
saved when the 400W-series unit is turned off.
Backlighting will revert to the “Auto” setting the
next time the unit is turned on.
Nearest Airport Criteria — defines the minimum
runway length and surface type used when deter-
mining the 25 nearest airports to display on the
nearest airport page . A minimum runway length
and/or surface type may be entered to prevent air-
ports with small runways, or runways that are not
of appropriate surface, from being displayed. The
default settings are “0 feet (or meters)” for runway
length and “any” for runway surface type.
SBAS Selection — selects the Space Based Aug-
mentation System (SBAS) used for navigation and
allows turning WAAS on and off.
COM Configuration — allows you to select 8.33
kHz or 25.0 kHz COM frequency channel spacing.
NOTE: 8.33 kHz VHF communication frequency
channel spacing is not approved for use in the
United States. Select the 25.0 kHz channel spac-
ing option.
To set the COM channel spacing:
1. Select “COM Configuration” and press ENT.
2. Turn the
small right
knob to select “8.33 kHz”
or “25.0 kHz” and press ENT.
Preset Com Frequencies
On units configured for COM Frequency Presets
you may store up to 15 preset Com frequencies in the
Com Configuration page. On units configured with a
remote Com frequency recall switch, these preset fre-
quencies can be loaded into the STBY frequency with
the press of a button.
NOTE : Preset Com Frequencies are only available
with SW Version 3.00, or later.
To store a preset Com frequency:
1. Select “COM Configuration” from the Setup 2
Page.
2. The flashing cursor will highlight the Channel
Spacing field. Turn the large right knob to
highlight the left (non-decimal) part of the first
frequency field.
3. Turn the small right knob to select the desired
frequency.
Setup 2