Cpa Alert - Weatherdock Easy TRX2S serie Handbuch

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Sometimes it is necessary to click on "Format" several times as certain
SD cards take more time than the easyTRX2S expects. We recommend
SD-Cards from "SanDisk®" for best compatibility and reliability.
The easyTRX2S devices format the SD card in FAT format. If the card
was already formatted in a PC it always needs to be formatted by the
easyTRX2S again. The reason for that is that the easyTRX2S device sets
up a file structure which permits to save the AIS and GPS data on the
card in real time.
The easyTRX2S (-IS) is using the FAT format. If the SD Card has got
another format, you have to format it again with the easyTRX2S (-IS).
It's because the device is storing a special set of files, which enable real
time storing of AIS and GPS data.
Once formatted, you can remove the SD card whenever you want. No
data will be lost. In the case of a voltage drop the latest received data
is still recorded. There is no data loss caused by power sag.
Corresponding markings are displayed in the status box.
The easyTRX2S works with SD cards capacity up to 32GB!
The internal system records data up to a volume of 2GB. This will be
totally enough to store AIS data of one year in a high traffic area. The
size of the SD Card is not important. Just because 2GB cards become
hard to find, we decided to use cards up to 32GB.

17.6 CPA Alert

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.
Weatherdock AG Sigmundstraße 180 D-90431 Nürnberg
Tel.: +49 911 376638 30 www.weatherdock.de