Memorex RX 1 Smart Installationshandbuch PDF herunterladen (Seite 246)

Simrad MX500 | 245

LOCAL TIME ZONE OFFSET

The number of hours by which the local time zone differs

from Universal Time Coordinated.

LORAN-C TIME DIFFERENCES (TDs)

The phantom Loran-C Time Differences used in the navi-

gator are based on mathematical models. Local devia-

tions in propagation speed and Additional Secondary

Factors (ASF) are not included in the algorithm. The

calculated positions may therefore differ from positions

obtained when using a dedicated Loran-C receiver by

several hundred meters.

MAGNETIC DEVIATION

The error introduced into the steering compass reading

by nearby ferrous metal mass distorting the earth mag-

netic flux field surrounding the compass.

MAGNETIC HEADING

Direction, as sensed by the steering compass, in relation

to magnetic north.

MAGNETIC NORTH

Direction in the plane of the observer’s horizon toward

the earth’s north magnetic pole.

MAGNETIC VARIATION

The angle by which magnetic north varies from true

north at any given point on the earth’s surface. This

value is automatically added to the magnetic heading

input to provide true heading for calculation and display

purposes.

A list of functions in the display. Selection of a function

from the list is accomplished with either the toggle key or

the soft keys.

MERCATOR CHART

A map developed by Mercator projection wherein the

curved surface of the Earth’s ellipsoid is projected onto

a cylinder and the cylinder is “unwrapped” to form a flat

representation of the ellipsoid.

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Memorex RX 1 Smart Installationshandbuch Seite 246