NorthStar Navigation EXPLORER 657 Setup Alarms, Symbol Alarm, Arrival radius Anchor alarm

17-9 Setup > Alarms

Press twice, then select Alarms:

All alarms except Loss of GPS fix can be turned on (enabled) or off (disabled).

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.

Icons for alarms that are on can be displayed in the data header (see section 2-7-3). An alarm icon is normally black and turns red when the alarm sounds.

Symbol Alarm

Arrival radius

Anchor alarm

XTE

Danger

Loss of DGPS fix

Loss of GPS fix

Loss of

AIS receiver communication

Alarm sounds when it is on and the:

Boat is closer to the destination or to a waypoint than the alarm trigger value

Boat moves by more than the alarm trigger value

Boat moves off course by more than the CDI scale (see section 14-2)

Boat comes closer to a danger waypoint than the alarm trigger value

657 can not receive the DGPS signal (beacon, WAAS or EGNOS)

657 can not receive the GPS signal (this alarm is always on

657 is no longer receiving communication from the AIS receiver (Alarm is on when AIS is enabled)

Fish	Echo matches the profile of a fish
Too shallow	Depth is less than the alarm trigger value
Too deep	Depth is greater than the alarm trigger value
Temperature	Temperature equals the alarm trigger value
Temperature rate	Rate of change of temperature equals the alarm trigger value
Low battery	Battery voltage is less than the alarm trigger value
Low fuel	Fuel remaining equals the alarm trigger value

70 Northstar Explorer 657 Installation and Operation Manual