Map Boundaries; Fill Water With White; Map Overlays (Range Rings; Lat/Long Grid); Map Datum Selection - Lowrance LMS 330C Installation And Operation Instructions Manual

Map Boundaries

From the Map Page, press
M B
AP OUNDARIES
on) and uncheck it (turn off.) After the option is set, press
return to the page display.

Fill Water With White

From the Map Page, press
W W W
ATER ITH
(turn on) and uncheck it (turn off.) After the option is set, press
| to return to the page display.
EXIT EXIT

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
ring diameters are based on the current zoom range. For example: at the
100 mile zoom, the screen will show two rings with your current position
in the center. The large ring touching the left and right sides of the
screen is 100 miles in diameter (same as the zoom range). The second
smaller ring is 50 miles in diameter (always 1/2 the zoom range).
The distance from your current position to the smaller ring (the ring's
radius) is 25 miles (always 1/4 the zoom range). With the arrow keys
and map cursor, you can scroll the map to see the third and fourth
rings. In this example, the distance to the third ring is 75 miles and
distance to the fourth ring is 100 miles from your current position.
To set range rings: From the Map Page, press
. Press ↓ to
|
D ENT
ATA
to check it (turn on) and uncheck it (turn off.) After the option is set,
press |
EXIT EXIT
To set Lat/Long Grid: From the Map Page, press
. Press ↓ to
|
D ENT
ATA
press to check it (turn on) and uncheck it (turn off.) After the op-
ENT
tion is set, press

Map Datum Selection

Maps and charts are based on a survey of the area that's covered by the
map or chart. These surveys are called "Datums." Maps that are cre-
ated using different datums will show the same latitude/longitude in
slightly different locations.
. With the option highlighted, press
. With the option highlighted, press
HITE
R
ANGE
to return to the page display.
L /L
AT
|
EXIT EXIT
|↓ to
MENU M
|↓ to
MENU
. With the option highlighted, press
R
INGS
. With the option highlighted,
G L
ON RID INES
to return to the page display.
155
. Press ↓ to
|
D ENT
AP ATA
ENT
|
M D ENT
AP ATA
D
RAW
to check it (turn
|
EXIT EXIT
. Press ↓ to
F
to check it
ENT
|↓ to
MENU M
ENT
|↓ to
MENU M
to
ILL
AP
AP