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magnified area.
•
4x Zoom—four times the magnification. Select Up, Down, or
magnified area.
•
Bottom Lock—locks the zoom window to the bottom. Select Up, Down, or
depth range of the magnified area.
Depth Line—quickly reference a specific depth
down on the
A-Scope—creates a vertical flasher along the right side of the screen
Sonar Setup—opens the Sonar Setup screen. See
GPSMAP 4000 Series Owner's Manual
ROCKER
to set the depth of the reference line.
Auto
to set the depth range of the
or Off). When
On
(On
(On
page
46.
u
S
SInG
Auto
to set the
is selected, press up or
or Off).
onar
4