Cpa-Alarm - Weatherdock easyTRX2S Series Manual

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6.6 CPA-Alarm

The "CPA Alert" tab gives the possibility to configure parameters
which trigger an alarm. CPA means "Closest Point of Approach" to a
ship transmitting its position, bearing and speed via AIS.
The easyTRX2S devices have a built-in feature which calculates the CPA
with every received AIS target.
You can now set a safety radius (around your ship). If a ship enters the
safety radius (in this example 500 m) within the stated time limit (here
30 minutes) the CPA alarm occurs.
You may change the radius and the time by clicking on the arrows and
transfer it to the easyTRX2S by clicking on "Program". You can check
the current settings of the transponder by clicking on "Read". The
settings remain in the device i.e. it is not necessary to program it again
after restart.
The CPA alarm can be disabled by pressing the button "CPA-Alarm
ON". Here as well, the settings done with "Program" are applied to
the easyTRX2S and checked with "Read".
CAUTION:
Only vessels, which do have a properly working AIS aboard, are able to
trigger the CPA alert in the easyTRX2S Transceiver!! Therefore you
should always watch out for other vessels which are on collision
course!!!
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Tel.: +49 911 376638 30 www.weatherdock.de