Garmin GPS 400W Pilot's Manual & Reference page 175

To select a setup item from the setup 1 page:
1. Press the small right knob momentarly, to
actvate the flashng cursor.
2. Turn the large right knob to select the desred
setup tem, and press ENT.
The following setup items are available:
Airspace Alarms— allows you to turn the
controlled / special-use airspace message alerts on
or off. This will not affect the alerts listed on the
nearest airspace page or the airspace boundaries
depicted on the map page. It will simply turn on/off
the warning provided when you are approaching or
near an airspace.
An altitude buffer is also provided which "expands"
the vertical range above or below an airspace. For
example, if the buffer is set at 500 feet, and you are
more than 500 feet above or below an airspace, you
will not be notified with an alert message; if you are
less than 500 feet above or below an airspace and
projected to enter it, you will be notified with an
alert message. The default is 200 feet.
CDI / Alarms— allows you to define the scale for
the 400W-series unit on-screen course deviation
indicator. The scale values represent full scale
deflection for the CDI to either side. The default
setting is "Auto". At this setting, the CDI scale is
set to 2.0 NM during the "en route" phase of flight.
Within 31 NM of your destination airport, the CDI
scale gradually ramps down to 1.0 NM (termi-
nal area). Likewise, when leaving your departure
airport the CDI scale is set to 1.0 NM and gradu-
ally ramps up to 2 NM beyond 30 NM (from the
departure airport). During approach operations
the CDI scale gradually transitions down to an
angular CDI scale. At 2.0 NM of the final approach
fix (FAF), CDI scaling is tightened from 1.0 to the
angular full scale deflection (typically the angular
full-scale deflection is 2.0°, but will be as defined
for the approach).
If a lower CDI scale setting is selected (i.e., 1.0 or
0.3 NM), the higher scale settings are not selected
during ANY phase of flight. For example, if 1.0 NM
is selected, the 400W-series unit uses this for en
route and terminal phases and ramps down further
during an approach. Note that the Horizontal
Alarm (HAL) protection limits listed below follow
the selected CDI scale, unless corresponding flight
phases call for lower HAL. For example, if the 1.0
NM CDI setting is selected, full-scale deflection
during approach will still follow the approach CDI
scale settings.
190-00356-00 Rev B
9 - AUX PAGES
Utility Page
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