Furuno MFD12 - Proximity Alarm; Depth Alarm; SST Alarm; Speed

2. Chart Plotter
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2.10.3 Proximity Alarm
The proximity alarm tells you when your vessel is near a point for which an avoidance
circle, set on the [Points] list, is active. When your vessel is within the set value, audio
and visual alarms are released.
2.10.4 Depth Alarm
The depth alarm tells you when the depth to the bottom is over or under the value you
set. Requires depth data.
2.10.5 SST Alarm
The SST (Sea Surface Temperature) alarms tells you when the sea surface tempera-
ture is over, under, within range, or out of range of the temperature you set. “[Shear]”
tells you when the temperature goes higher or lower than the set value within one
minute.
Set the [Over] and [Under] alarm value with "[SST Alarm Value]", and shear with
"[Shear]". For [Within Range] and [Out of Range], set the alarm value with [SST Alarm
Range].
Requires temperature sensor.
2.10.6 Speed
The speed alarm tells you when the speed of your vessel is within range, out of range,
over or under the set value. Set the value at [Speed Alarm Value]. Requires a GPS
navigator or speed sensor.
2.10.7 Trip Log Alarm
The trip log alarm tells you when your vessel has moved some distance. Requires a
speed log or GPS navigator.
2.10.8 Countdown Timer
The countdown timer measures the remaining time from a set time, and is available
on the chart plotter display. Set the alarm time on the [Alarm] menu. Start and stop the
timer from the chart plotter display. Long-push the RotoKey to select [Countdown]
then push the RotoKey to start or stop the timer. The timer appears at the center of
the plotter chart display. When the set time is reached, some beeps sound and the
countdown indication is erased from the screen.
2.10.9 Alarm Clock
The alarm clock operates like an standard alarm clock, releasing audio and visual
alarms when the set time comes.
4m51s