Northstar
M121/M84
Installation and Operation Manual
84
Press
MENU
twice, then select
Alarms
:
19-10 Setup > Alarms
For all alarms select to turn the alarm on or
select to turn the alarm off. For most alarms
there is a trigger value. The alarm will sound
each time the alarm value equals the trigger
value.
For example, the
Danger
alarm will sound if
the boat comes closer to a danger waypoint
than the trigger value and the
Anchor
alarm
will sound if the boat moves by more than the
trigger value.
You can display the alarm status in the data
header (see section 2-7-3). The alarm status
shows the symbol for each alarm that is on. The
symbol is normally black and turns red if the
alarm triggers.
Symbol
Alarm
Beeper
Alarm sounds when it is on and the:
Arrival radius
Boat is closer to the destination or to a waypoint than the alarm trigger
value
Anchor alarm
Boat moves by more than the alarm trigger value
XTE
Boat moves off course by more than the CDI scale (see section 5)
Danger
Boat comes closer to a danger waypoint than the alarm trigger value
Too shallow
1
/
5
sec
Depth is less than the alarm trigger value
Too deep
1
/
2
sec
Depth is greater than the alarm trigger value
Fish
1 short beep
Echo matches the profi le of a fi sh
Temperature
1
/
2
sec
Temperature equals the alarm trigger value
Temperature
rate
1
/
2
sec
Rate of change of temperature equals the alarm trigger value
Low battery
1
/
2
sec
Battery voltage is less than the alarm trigger value
Low fuel
1
/
2
sec
Low fuel remaining equals the alarm trigger value; on a multitank boat
you can set separate alarms for each tank (see section 13-4)
Loss of DGPS fi x
Instrument can not receive the DGPS signal (beacon, WAAS or EGNOS)
Loss of GPS fi x
Instrument can not receive the GPS signal (this alarm is always on)
Loss of AIS
receiver
communication
M121/M84 is no longer receiving communication from the AIS receiver
(Alarm is on when AIS is enabled)
Dangerous
vessel
The TCPA/CPA of another vessel is less than the trigger values
(see section 13)