JRC JMA-9133-SA - Hide;Display Range Rings [HL OFF]; Hide Graphics Information on Radar Display [DATA OFF]

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JMA-9100 Instruction Manual > 3.BASIC OPERATION > 3.4 GENERAL RADAR OPERATION
3.4.10 Hide/Display Range Rings [HL OFF]
Procedures
1) Press the [HL OFF] key. Alternatively, Left-click the
button located at the lower right of the display.
The ship's heading line (HL) is hidden while the [HL OFF] key is held down.
The ship's heading line that indicates the course of own ship is always shown on the radar
display. The heading line is hidden while the [HL OFF] key is held down, so the targets on
the heading line can be easily observed.
3.4.11 Hide Graphics Information on Radar Display [DATA OFF]
Various graphics information such as target tracking TT/AIS symbols, NAV lines,
and MAP information is shown on the radar display of this radar system, and may
make it difficult to view the radar video. In that case, use this function to
temporarily hide unnecessary graphics information.
Procedures
1) Press the [DATA OFF] key. Alternatively, Left-click the
button located at the lower right of the display.
While the key is pressed, graphics data other than VRM, EBL, HL, cross cursor mark, and
range rings on the radar display is temporarily hidden.
HL
Off
Data
Off