JRC JMA-5312-6 Instruction Manual page 88

Lower right of the display
① Mark color switching
④ Map display
On / Off
⑤ Graphic display Off
①：Mark color switching
The color of the mark is switched whenever this button is clicked.
If the button is clicked for 2 seconds, the Mark Setting menu is opened.
②：Own ship's track interval switching
The own ship's track interval is switched whenever this button is clicked.
③：Own ship's track interval unit switching
The unit of the own ship's track interval is switched whenever this button is clicked.
sec ⇒ min ⇒ NM ⇒ sec
④：Map display On / Off
The map display is set to On / Off whenever this button is clicked.
Map information must be inserted in the card slot of the radar process unit in advance.
If the button is clicked for 2 seconds, the Map Setting menu is opened.
⑤：Graphic display Off
While the button is clicked, the graphic display other than VRM, EBL, HL, a cursor, and range rings
on the radar screen is cleared temporarily.
⑥：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.
⑦：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 T (true vector), the CPA ring cannot be set to On.
② Own ship's track interval
switching
⑥ Ship's heading line Off
2-21
③ Own ship's track interval unit
switching
⑦ CPA ring display
On / Off