2-45
When installing two scanners, provide a height difference so that those two scanners do not
enter each other's vertical beam width range.
• To avoid interference with other equipment and to prevent radio noise from
generating, do not place the VHF antenna, GPS antenna, and INMARSAT's
dome within the range of the vertical beam width.
• Keep a record of installation height data. The data is necessary for the initial
setting of the display unit.
• Minimize the blind sector, and ensure the adequate view angle so that the blind
sector does not exist in the range 22.5° from side to rear (Fig 2-15). Specifically,
ensure a sufficient view field in the straight front (relative bearing 000°).
Fig 2-15 Ensuring view angle
• Magnetron which has strong magnetic force is included in the scanner. Install
the scanner at least 3 meters away from nautical instruments including magnetic
compasses and chronometers.
Make no blind sector