Eagle Map Guide, Инструкция по установке и эксплуатации

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The fix indicator on the left center shows either 2D or
3D. A 2D fix means the unit has locked onto three sat-
ellites and has calculated its position. A 3D fix means
the unit has locked onto at least four satellites and has
calculated both the position and altitude. (Remember,
it takes three satellites to determine the position - four
to determine position and altitude.) If neither 2D nor
3D are showing, then the unit doesn’t have the posi-
tion or altitude.
A battery level indicator on the lower right side of the screen shows ap-
proximately how much life is in the batteries. This runs from “F” (fully
charged) to “E” (expired).
A light bulb indicator at the top right corner of the screen appears when
the backlights are on.
Finding Your Position
Auto Search
To lock onto the satellites, the GPS receiver needs to know it’s current
position, local time, and date. (Elevation (altitude) is also used in the equa-
tion, but it’s rarely required to determine a position.) It needs this data so
that it can calculate which satellites should be in view. It then searches for
only those satellites. When your GPS receiver is turned on for the first
time, it doesn’t know what your position or elevation (altitude) is. It does
know the current UTC time and date since these were programmed into it
at the factory and an internal clock keeps the time while the unit is turned
off. It begins searching for the satellites using the above data that it ac-
quired the last time it was turned on. This probably was at the Eagle fac-
tory. Since it’s almost certain that you’re not at the Eagle factory, it’s prob-
ably looking for the wrong satellites. If it doesn’t find the satellites it’s look-
ing for after five minutes, it switches to Auto Search. The receiver looks for
any satellite in the sky. Due to advanced technology, the auto search time
has shrunk to about five minutes, so the longest time you should ever
have to wait is ten minutes from the time you turn the unit on until it locks
onto the satellites and shows a position. Once the unit locks onto the
satellites, it should take less than a minute to find your position the next
time it’s turned on, provided you haven’t moved more than approximately
100 miles from the last location it was used.
Manual Initialization
If you don’t want to wait for the Auto Search, then you may be able to
speed up the initialization process by using the manual initialization fea-
ture. Using this feature tells the unit it’s approximate position. Once it knows