7
it’s location, it determines exactly which satellites should be in view and
starts looking only for those satellites.
To manually initialize the unit, press the MENU key.
Now press the down arrow key until the “GPS SETUP”
label is highlighted. Press the right arrow key. The
“INIT GPS” (Initialize GPS) label is highlighted. Press
the right arrow key again. The screen at right appears.
Use the arrow keys to move the crosshairs to your
approximate location on the map. You may use the
ZOUT key to zoom the map out. This will make it
easier and faster to find your location on the map.
Once you have the crosshairs on your location, press
the ENT key. The unit returns to the satellite status
screen.
Using the manual initialization method loads a position that’s close to
yours into the GPS receiver. It should now have position, time, and date,
thereby giving it the data it needs to determine which satellites are in
view. Once the satellites are known, the receiver searches for only those
satellites, making a lock faster than an auto search method.
Position Acquisition
When the receiver locks onto the satellites and calculates a position, it
shows the message “Position Acquired” on the screen. All position and
navigation data flashes until the unit acquires a position.
Do not rely on
any data that is flashing!
When the numbers are flashing, they represent
the last known values when the unit lost it’s lock on the satellites.
(Note: The altitude data may still flash even if the unit shows a “Position
Acquired” message and all other data is not flashing. The unit must be
locked onto at least four satellites to determine altitude. It only takes three
satellites to determine position. You can navigate with this unit if the alti-
tude is flashing, simply ignore the altitude display until it quits flashing.)
REMEMBER, DO NOT NAVIGATE WITH THIS UNIT UNTIL THE
NUMBERS STOP FLASHING!
Once the unit has acquired the satellites and it’s showing a fix on the
status screen, or the position acquired message appears, it’s ready for
use.
Summary of Contents for Map Guide
Page 1: ...INSTALLATION AND OPERATION INSTRUCTIONS Map Guide TM ...
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