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2.3 Functions of Software Buttons
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Upper left of the display
①：Range scale switching
To increase the observation range scale (maximum 96 NM), click + and to reduce the range
(minimum 0.125 NM), click - .
②：Range rings display On / Off
The display of range rings are set to On / Off whenever this button is clicked.
When the display is set to On, the interval of the fixed range marker is displayed.
③：Motion mode true / relative switching
The screen motion mode is switched whenever the button is clicked.
TM (true motion) ⇒ RM (relative motion) ⇒ TM
RM(R) indicates that the radar trails is a relative trail.
RM(T) indicates that the radar trails is a true trail.
④：Off center switching
If this button is clicked, the cursor is moved, and the [ENT] key is pressed, the ship's position can be
moved to the cursor position. The moving range is within 66 % of the radius.
If the button is clicked for 2 seconds, the off-center is set to Off and the ship's position is returned to
the center of the screen.
⑤：Transmission / standby switching
At expiration of the pre-heat time after the power is turned on, Preheat changes to Standby .
Standby : Indicates a standby state. If this button is clicked in this state, the equipment is set to a
transmission state.
Transmit : Indicates a transmission state. If this button is clicked in this state, the equipment is set
to a standby state.
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