Garmin GNS 430 - Manual (Page 162)

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Position / Map Datum— confi gures position readout information to the desired
position format and datum. The NavData® card contains over 100 map datums to adjust
your position reading, making it conform to specifi c paper charts. If you are using a chart
based on another datum, you must set the GNS 430 to use the same datum. Using a map
datum that does not match the charts you are using can result in signifi cant differences in
position information. If you are using the paper charts for reference only, the GNS 430
will still provide correct navigation guidance to the waypoints contained in the database,
regardless of the datum selected.
Date / Time— provides settings for time format (local or UTC; 12- or 24-hour) and
time offset. The time offset is used to defi ne current local time. UTC (also called “GMT” or
“zulu”) date and time are calculated directly from the GPS
satellites’ signals and cannot be changed. If you prefer to use local time, simply designate
the offset by adding or subtracting the correct number of hours.
AUX PAGES
Setup 1
9
Setup 1 Page: Airspace Alarms
To set the airspace warning messages or change the altitude buffer:
1. Select “Airspace Alarms” from the setup 1 page, using the steps described on page 152.
2. Rotate the large right knob (
d ) to highlight the “On”/”Off” field next to the desired airspace
type. (“Other SUAs” includes alert, caution, danger, training and warning areas.)
3. Rotate the small right knob ( a ) to select “On” or “Off”, as desired. Press E to accept the
selection.
4. To change the altitude buffer, rotate the large right knob ( d ) to highlight the “Altitude Buffers”
field. Use the small ( a ) and large ( d ) right knobs to enter the desired buffer distance. Press
E when finished.
NOTE
When an approach has been loaded into the active flight plan, airspace
alert messages will be disabled within 30 nm of the destination airport.
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