Raymarine A65 - Manual (Page 32)

32 A65 GPS Chartplotter
2.7 Fishfinder Setup
These setup items are for an optional a DSM25 Digital Sounder Module. The
Fishfinder Setup menu is described in the DSM25 Handbook.
2.8 System Setup
These settings define parameters that are used by the A65 in all applications.
Range Rings
Concentric circles displayed on the screen at pre-set distances that
are used to gauge the approximate distances between points. Range
Rings are drawn at intervals equal to 1/4 of the Chart Range value dis-
played in the Status Bar (see page 24). Range Rings are centered on
the chart (not the boat) and are labeled with the distance from the
center, measured in the Distance Units set it the Units parameter of
the System Setup menu. When zooming in and the value on the ring
becomes less than 0.5 mile or 0.5 kilometer, the distance label con-
verts to feet or meters, respectively.
OFF
ON
Background Color
The color in which the ocean is displayed.
BLUE
WHITE
FUNCTION
Description
OPTIONS
(Default in bold )
Simulator
Enables you to operate your display without data from
the GPS antenna or a DSM, so that you can become
familiar with the A65’s features and functions.
OFF
ON
Bearing Mode
Determines how heading data are displayed.
MAGNETIC
TRUE
Variation Source
This allows you to compensate for the naturally occur-
ring offset of the earth’s magnetic field. When set to
AUTO, the system will calculate this difference automat-
ically. To enter your own variation value, set to MAN-
UAL.
MANUAL
AUTO
FUNCTION
Description
OPTIONS
(Default in bold )