![Rhotheta RT-800 Скачать руководство пользователя страница 95](http://html1.mh-extra.com/html/rhotheta/rt-800/rt-800_user-manual_1452912095.webp)
RHOTHETA User Manual RT-800
Page 95 of 192
Choosing the “Magnetic”
reference direction
Choosing the “True”
reference direction
Choosing the “relative” reference direction
Choosing the default
reference direction (“True”)
Fig. 82 Bearing reference direction dialog
o
Press the hotkey “True Bearing“ to set the bearing reference direction relative to true
(geographic) north (only if compass data is available). If no compass data is available,
the bearing page will not adopt the “True” setting. The relative bearing and “No
Compass” warning will be shown.
o
Press the hotkey “Mag. Bearing“ to set the bearing reference direction relative to
magnetic north (only if compass data is available). If no compass data is available, the
bearing page will not adopt the “Magnetic” setting. The relative bearing and “No
Compass” warning will be shown.
o
Press the hotkey “Rel. Bearing“ to set the bearing reference direction relative to the
heading of the vessel (for mobile installation) / to North/0° alignment of the antenna (for
permanent installation).
Note
If the “Rel. Bearing” reference direction is chosen and the compass data is available,
then the heading (value in the triangle on the top of the bearing rose) will change its
value according to the compass data.
o
Press “Set Default” to use the default value (true north direction, only if compass data
is available).
o
To save the changed value, press “OK”.
o
Pressing the “ESC” button will leave the dialog without adopting the changed value.
6.4.2.3 Bearing Scale Offset
In this menu an offset for the bearing rose can be set. This is useful for better visual
comprehension of the bearing direction indication. It can be used, for instance, if the window
of the vessel’s control cabin shows to another direction than the bow of the ship and it is
desired to take this direction as the relative direction.
After setting the bearing scale offset to a certain value that differs from 0°, the bearing rose
will turn according to this value.
To set the bearing scale offset, press OK” or “Edit Value” (s. Fig. 80, positions 4 or 8) while
the line “Bearing Scale Offset” is marked. The corresponding dialog will open.