Furuno 520 - Manual (Page 55)

5. ALARMS
5-5
5.1.6 Setting the speed alarm
The speed alarm warns you when your boat’s speed is within, outside, over or
under the speed range setting.
1. Rotate the course control knob to select “SPD” from the ALARM SETUP
menu.
2. Press the course control knob to show the speed alarm options window.
UNDER
OVER
INSIDE
OUT
OFF
Speed alarm options window
3. Rotate the course control knob to select speed alarm condition.
OFF: Turn the speed alarm off.
UNDER: The alarm is sounded when ship’s speed is under the set value.
OVER: The alarm is sounded when the ship’s speed is over the set value.
INSIDE: The alarm released when ship’s speed is within the range set.
OUT: The alarm is released when ship’s speed is outside the range set.
When selecting INSIDE or OUT OF RANGE, set the upper and lower limits,
using three digits. For OVER and UNDER, set value (Setting range: 0.0 to 999.9
kt, km/h or mph). This alarm uses the speed set at SPEED CALICULATION on
the SYSTEM SETUP menu.
4. Press the course control knob.