JRC JMA-2353, Инструкция по эксплуатации

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Chapter 2 OPERATIONS
2.7 SOFT KEY OPERATION
2-58
2 Operate with the soft keys.
Soft key 1: RM
Press the soft key 1 to switch to relative motion display.
Own ship returns to the center of the radar screen.
Soft key 2: TM
Press the soft key 2 to switch to true motion display.
Soft key 3: TM Reset
Press the soft key 3 during the true motion display mode, the own ship position is
reset, as same as switching from relative motion display to true motion display.
Own ship starts from the reset position.
Soft key 4: Not available

True motion display
In the true motion display mode, the own ship's position on the radar screen moves
depending upon its speed and course and the influence of the current. Land and other
fixed targets are fixed on the radar screen and only actually moving targets move on the
radar screen. When the true motion display mode is selected, the own ship's position is
set to 66% of the display radius in the opposite direction to its course allowing for the
influence of the current. Own ship starts moving depending upon its speed and course
and the influence of the current. Subsequently, when own ship arrives at the position of
66% of the display radius, it is automatically reset to its initial position at 66% of the
display radius in the opposite direction to its course allowing for the influence of the
current.