Alarm Options - Lighthouse a65 Installation And Operation Instructions Manual

12.3 Alarm options

Safety Alarms
Menu item Description
Waypoint arrival If enabled, when you arrive at a waypoint, an alarm is
triggered. This setting allows you to specify the radius
of the waypoint arrival circle. The waypoint arrival
circle is an imaginary circle around the destination
waypoint. When your vessel crosses this circle the
Waypoint Arrival alarm is triggered.
Off track When enabled, during active navigation an alarm is
triggered when your vessel steers off-track more than
the value you specify for the Off Track XTE setting.
Safezone (MARPA & Alarms are triggered when targets become dangerous.
AIS targets) AIS and MARPA targets are deemed dangerous when
they are within the specified:
• Distance / Radius — Closest Point of Approach
• Time — Time to Closest Point of Approach (TCPA)
to the Safezone
MARPA target alarms cannot be disabled. See below
for disabling and enabling AIS target alarms.
Alarm management
Note: The waypoint arrival alarm is always enabled
if your system includes a Raymarine autopilot.
(CPA), or
Options
Enable:
• Enabled (Ticked) (default)
• Disabled (Un-ticked)
Waypoint arrival radius
Default values:
• 19 m — applies to km and nm & m units
of measure.
• 61 ft — applies to Nautical Miles and Statue
Miles units of measure.
Radius / distance range:
• 19 to 18,520 m
• 61 to 60,761 ft
• 0.01 to 10 nm
• 0.012 to 11.508 sm
• 0.019 to 18.52 km
Enable:
• Enabled (Ticked)
• Disabled (Un-ticked) (default)
Off Track XTE
Default values:
• 556 m — applies to km units of measure.
• 0.300 nm — applies to nm and nm & m
units of measure.
• 0.345 sm — applies to sm units of measure.
Radius / distance range:
• 19 to 18,520 m
• 61 to 60,761 ft
• 0.01 to 10 nm
• 0.012 to 11.508 sm
• 0.019 to 18.52 km
Safezone radius
• 0.1 nm / 0.1 sm / 0.2 km
• 0.2 nm / 0.2 sm / 0.5 km
• 0.5 nm / 0.5 sm / 1 km (default)
• 1 nm / 1 sm / 2 km
• 2 nm / 2 sm / 5 km
Time to Safezone
• 3 min (default)
• 6 min
• 12 min
• 24 min
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