Throughout the search and
acquisition of satellites the
receiver status screen
monitors the activity of all 5
channels. Refer to the
illustration on page 4-12 to
interpret this screen.
When the unit is first turned on, the unit's internal clock is updated in
the first 10 seconds of Ephemeris data collection. Thereafter, the clock
is updated every few position fixes.
4-11
The Instafix
TM
satellite search algorithm devotes all five channels to the
search for the satellite the Almanac indicates is directly overhead,
given your last fix or initial position. This greatly shortens the length of
ti
me required to obtain a position fix.
The first satellite is usually located in a few seconds, but when satellite
geometry is not optimum, it takes up to a minute. If the satellite cannot
be located, the unit looks for the satellite with the next highest eleva-
tion.
Once the satellite has been
located, the receiver
searches for other satel-
lites that are scheduled to
be in view.
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