Setting Up The Navigation Data; Heading; Magnetic Variation - Raytheon RayChart 620 Operation Manual

Chapter 6: Customizing the RayChart 620

Setting Up the Navigation Data

The NAVIGATE option from the Set Up menu allows you to set up your
navigation preferences .
The following table lists the Navigate parameters and their options,
shows the factory default setting, and provides a space for you to make
a note of your new default setting. Each parameter is described in the
following subsections.
Parameter/Menu

Heading

Magnetic Variation

Position resolution
TD Settings Menu
Map Datum
Fix Datum
Position correction
Heading
Select either degrees magnetic or degrees true for your heading data.
The units you set will be used to display all heading data, including
information received from other instruments on the system.
Magnetic Variation
The default setting for magnetic variation is Automatic, which means
that the variation value is taken from the data received via SeaTalk or
NMEA, with SeaTalk data given priority. If no variation data is received,
the variation value from the installed chart card is used.
If preferred, you can set a specific variation value. Use the trackpad to
change from Automatic to a value, and increase or decrease the value
in 0.1° steps. Press and hold the trackpad to change the value quickly.
Options
Magnetic
True
AUTOMATIC
Value, + or - in 0.1° steps
.00
.000
TD
GRI
Slave 1
Slave 1
ASF 1
ASF 2
Alternate Solution
Factory New
Default Default
Magnetic
AUTOMATIC
.00
9970
W
W
+0.0
+0.0
OFF
WGS 1984
WGS 1984
No correction
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