Choosing Sector Width - Furuno CH-270 Operator's Manual

2. HORIZONTAL MODE
2.4

Choosing Sector Width

Sector means the width of the transducer training. The [SECTOR] control chooses the
training (display) area among the sixteen positions shown in the table below. Clockwise
rotation of the control increases the sector width; counterclockwise rotation decreases it.
1 2
Sector
width 6 24 48
(°)
In the full-circle mode (360°) the direction of training is clockwise; in the half-circle mode
the direction is clockwise to counterclockwise alternately.
One-touch selection of 360° ° ° ° sector
Each pressing of the [FULL/HALF] key alternately chooses 360° sector (full circle) or 168°
sector (half circle). If the [SECTOR] control is operated following the selection of the
full-circle display, the next pressing of the [FULL/HALF] key presents the full-circle display.
Sector set with
SECTOR control
2-4
96°
Display sector
3 4 5 6
72 96 120
FULL/HALF
key
How the FULL/HALF key works
Display sector
(shown: 96
7 8 9 10
144 168 192 216
Full circle
FULL/HALF
key
°
)
11 12 13 14
240 264 288 312
Half circle
°
168
15 16
336 360