Furuno FR-8252 EN - Manual (Page 70)

1. OPERATIONAL OVERVIEW
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8. Roll the trackball upward or downward to set the width of the sector and press the ENTER key.
Note: The combined width of sector 1 and sector 2 may not exceed 270 degrees.
9. Press the MENU key to close the menu.
As shown in the illustration below, dashed lines mark the starting and ending points of the
sector and two dashed arcs run the width of the sector.
Appearance of sector blank
+
+ 96.8 ° R 0.338 NM
Area of no
transmission
Start bearing
of area