Units; Variation; Variation Mode; Date Format - Raymarine RC400 Owner's Handbook Manual

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Units

This sets the units for distance, speed and depth. This setting will be used
to display all data. However, the distance units do not affect the chart
scale, which is always in nautical miles.

Variation

The variation value is the difference between True and Magnetic
direction data for heading or bearing values. The Magnetic value is
derived from True by applying the user selected value of variation.
The variation is set in 1° steps to 30° East or West. Press trackpad right to
move the value eastward, or left to move it westward. The selected value
is retained when the unit is switched off. The Default value is zero.
Note: Variation can only be changed if the VARIATION MODE is set to
MANUAL

Variation Mode

This can be set to AUTO or MANUAL. In AUTO mode, the RC400
automatically calculates and sets the magnetic variation. Set this to
MANUAL to enter your own value.

Date Format

Set the preferred date format (DD/MM/YY or MM/DD/YY). The selected
setting is retained when the unit switched off. The Default is DD/MM/YY.

Time Offset

To display local time, use the trackpad to change from UTC (Universal
Time Constant, also known as GMT) to the desired time offset. This can
be up to ±13 hours, in 1 hour steps. The default is UTC.

Language

Select the language in which information is to be displayed. The selected
language is used for screen text, labels, menus and options. Chart text,
provided by the chart card, is not affected.
RC400 GPS Chartplotter