Presentation Mode; Safety Contour; Map Overlays (Range Rings; Lat/Long Grid) - Lowrance GlobalMap Baja 840C Operation Instructions Manual

Mapping gps receivers
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Trackline Extension window are two check boxes (Show Time and Show Dis-
tance) which allow you to turn on or off the time and/or distance settings.
To set trackline extension: From the Map Page, press
|
. Press
D
ENT
ATA
distance setting and press

Presentation Mode

From the Map Page, press
P
M
RESENTATION
Presentation Mode gives you some control over the map layout by allow-
ing you to choose between US and International Modes.

Safety Contour

From the Map Page, press
S
C
AFETY
ONTOUR
S
C
AFETY
ONTOUR
map for water less than 10 meters deep. Based on your preferences, the
depth contours will be colored or shaded to make it easier to identify shallow
areas. Keep in mind the size of your ship's keel when determining which
option is right for your vessel.

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 di-
ameter (always 1/2 the zoom range).
The distance from your current position to the smaller ring (the ring's ra-
dius) 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 ex-
ample, 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
R
ANGE
on) and uncheck it (turn off). After the option is set, press
to the page display.
To set Lat/Long Grid: From the Map Page, press
|
. Press
D
ENT
ATA
press
to check it (turn on) and uncheck it (turn off). After the op-
ENT
tion is set, press
to
T
RACKLINE
ENT.
Use ↑ ↓ to choose the desired depth and press
|
ENT.
ODE
|
Use ↑ ↓ to choose the desired depth and press
ENT.
command allows you to modify depth contours on a navionics
. With the option highlighted, press
R
INGS
to
L
/L
AT
|
EXIT
EXIT
|
E
ENT.
XTENSION
|
to
MENU
M
AP
|
to
MENU
M
AP
. With the option highlighted,
G
L
ON
RID
INES
to return to the page display.
80
MENU
Use ↑ ↓ to select the desired
|
. Press
D
ENT
ATA
|
. Press
D
ENT
ATA
|
to
MENU
ENT
EXIT
MENU
|
to
M
AP
and → to
ENT
and → to
. The
ENT
|
M
D
ENT
AP
ATA
to check it (turn
|
to return
EXIT
|
to
M
AP
.
.

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