Furuno FSV-84 Operator's Manual page 44

2. HORIZONTAL MODE
For example, when the [RANGE] control, [TILT] control and [AUTO TILT] key are
set to 800 m, 8
transmission as follows:
8° → 9° → 8° → 7° → 8°
Note: The [AUTO TILT] key is inoperative when the target lock function is active
or is made active. Auto tilt is resumed once target lock is disabled.
2-10
°
and width (1) respectively, the tilt angle changes at each
Auto tilt concept
Tilt angle setting