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re-enable CPA alarms for this target again, use the
Enable
Alarms
menu item. Naturally, if
the target is still within the parameters established for triggering a CPA alarm, the alarm will
immediately sound again for that target!
There are several settings that control when a target triggers a CPA alarm:
CPA alarm
The distance (in nautical miles) which causes a CPA alarm to be triggered. If
a target has a CPA of this value, or less, an alarm will be triggered for that
target unless the alarm is suppressed by any of the other settings described
below.
This allows you to generate an alarm for any target that is predicted to come
“too close”.
CPA alarm
–
time
The time (in minutes) of when the CPA will occur. If the CPA time is greater
than this value then no CPA alarm will be triggered for this target.
This allows you to suppress alarms for targets which are predicted to come
close but not for a long period of time.
CPA alarm
–
target speed
The speed (in knots) which the target must be moving in order to trigger a
CPA alarm. If the target is moving at less than this speed then no CPA alarm
will be triggered for this target.
This allows you to suppress alarms for targets which are either stationary
(anchored or moored) or are moving very slowly (drifting, fishing, etc.).
CPA alarm
–
your speed
The speed (in knots) that your own vessel must be moving in order to allow
CPA alarms. If your vessel is moving at less than this speed then no CPA
alarms will be triggered for any targets.
This allows you to suppress alarms when your vessel is anchored, moored,
drifting, fishing, etc. It can be used to turn off alarms automatically when you
stop or slow down and eliminates the need to turn the
AIS
WatchMate
off or
select the Anchored profile.
Important note: CPA alarms are not triggered if GPS information is not available for
your vessel.
Profiles
To organize the filter and alarm settings
there are four “profiles”. These allow you to quickly
switch between various settings when your situation changes. This is done by selecting the
active profile from the main menu on the situation display. Each profile is provided with a
default value for its settings, but you can change these values and they will remain at your
selected settings until you change them again, even after you turn the unit off. You can
switch profiles or make changes to the settings associated with a profile at any time.
To change the settings associated with a profile, you must select the profile first and then
enter setup mode.
