Lowrance electronic LMS-334c iGPS - Manual (Page 160)

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You can also turn on or off Map Overlays, which display range rings
and latitude and longitude grid lines. This menu also lets you activate
Navionics Maps.
To get to the Map Data menu, press MENU |
↓ to
M AP D ATA
| ENT .
Map Menu (left). Map Data Menu (right).
Show Map Data
From the Map Page, press MENU |
↓ to
M
AP
D
ATA
| ENT . Press ENT to enter
the E
ARTH
M
AP
D
ETAIL
selection list and choose how much detail you want.
The settings range from Off to High. After the option is set, press EXIT
repeatedly to return to the main page display.
Pop-up Map Information
From the Map Data menu, press
↓ to
P OPUP M AP I NFORMATION
. With the
option highlighted, press ENT to turn it on (check) or turn it off (un-
check).
Map Boundaries
From the Map Data menu, press
↓ to
D
RAW
M
AP
B
OUNDARIES
. With the
option highlighted, press ENT to turn it on (check) or turn it off (un-
check).
Fill Water With White
From the Map Data menu, press
↓ to
F
ILL
W
ATER
W
ITH
W
HITE
. With the
option highlighted, press ENT to turn it on (check) or turn it off (un-
check).
Map Overlays (Range Rings; Lat/Long Grid)
The map screen can be customized with four range rings and/or grids
that divide the plotter into equal segments of latitude and longitude.
Range rings are handy for visually estimating distances on the map. The