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JRC JMA-3910-4 User Manual

JRC JMA-3910-4
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3 23
3.3
3.3.9 Changing Own Ship Display Position [OFF CENT]
The
OFF
CENT
key is used to offset own ship in any direction up to 65% of the radar display radius. This
function is convenient when watching a direction in a wide range.
This function cannot be used in the range scale of 96 and 120nm.
Procedures
1. Move the cross cursor mark (own ship display position) to a desired
position using the trackball (it cannot be moved beyond about 65% of the
radar display radius from the center).
2. Press the
OFF
CENT
key.
3. The own ship position moves to the cross cursor mark and is fixed there.
SHM
SHM
Press the key.
OFF
CENT
Cancellation
Keep pressing the
OFF
CENT
key for a while.
The own ship returns to the center of the radar display area.
3.3.10 Displaying Other Ship's Trails [TRAIL]
Movements and speeds of other ships can be checked from lengths and directions of their trails as well as
synthetic afterglow, which helps avoid collisions of ships. Trail length can be changed over to eight levels
of 1min, 3min, 6min, 12min, 15min, 30min, 60min and continuous.
Procedures
1. Press the
TRAIL
key to display the radar trail.
The trail length currently set appears on the upper right of the screen.
Exit
2. Press the
TRAIL
key.

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JRC JMA-3910-4 Specifications

General IconGeneral
BrandJRC
ModelJMA-3910-4
CategoryMarine Radar
LanguageEnglish

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