Lowrance electronic globalmap baja 840c Manual Do Utilizador

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3. To change distance settings, scroll 

↓

 or 

↑

 to select the desired cate-

gory, then press 

→

|

 to activate the distance dialog box. Press 

↑ or ↓ 

to change the first character, then press 

→ to the next character and 

repeat until the name is correct. 
4. When your adjustments are finished, return to the last page dis-

played by repeatedly pressing 

. 

Anchor Alarm — The anchor alarm may be triggered even when 

you're sitting still. This typically happens when using small (less 

than 0.05 mile) anchor alarm ranges. 

Arrival Alarm — If you set the arrival alarm's distance to a small 

number and run a route (see the Navigate Routes segment), this 

unit may not show navigation data to the next waypoint once you 

arrive at the first waypoint. You may not be able to come close 

enough to the first waypoint to trip the arrival alarm. 

To lock onto the satellites, the GPS receiver needs to know its current 

position, UTC time and date. It needs this data so it can calculate 

which satellites should be in view. It then searches for only those satel-

lites. Elevation (altitude) is also used in the equation, but it's rarely 

required to determine a position. 
When your GPS receiver is turned on for the first time, it doesn't know 

your position or elevation (altitude). It does know the current UTC time 

and date since these were programmed into it at the factory and an in-

ternal clock keeps the time while the unit is turned off (If the time 

and/or date are incorrect, you can set it using the "Set Local Time" fea-

ture in the System Setup menu.). 
The unit begins searching for satellites using the data it acquired the 

last time it was turned on, which was probably at the factory. Since it's 

almost certain that you're not at our factory, it's likely that it could be 

looking for the wrong satellites. 
If it doesn't find the satellites it's looking for after approximately one 

minute, it switches to Auto Search. That's when the receiver looks for 

any satellite in the sky. Due to advanced technology, the auto search 

time has shrunk significantly from the early days of GPS. 
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 100 miles from the last location it was used.