JMA-9172-SA Instruction Manual > 2.CONTROL PANEL KEYS and SOFTWARE BUTTONS> 2.3 FUNCTIONS OF SOFTWARE
BUTTONS
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Ship's heading line Off
The ship's heading line (HL) display is set to Off while this button is clicked.
Since the ship's heading line is cleared while the button is clicked, the target in the ship's
heading bearing can be clearly seen.
CPA ring display On / Off
The CPA ring display is switched to On / Off whenever the button is clicked.
When the target vector display mode is (true vector), the CPA ring cannot be set to
On.
Own ship's information
Heading device switching
The heading device is switched whenever this button is clicked.
⇒ (Electronic compass)⇒
When the selected heading device is not connected to the equipment, an alarm is issued.
Speed sensor switching
The speed sensor is switched whenever the button is clicked.
(Manual) ⇒ (Single-axis water log) ⇒ (Dual-axis water
log) ⇒ (Dual-axis ground log) ⇒ ⇒
When the selected speed device is not connected to the equipment, an alarm is issued.
Time display mode switching
The time display mode (universal time clock) / (local mean time) is
switched whenever this button is clicked.
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