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Different types of AIS transmissions can be selected to display different types of icons on the chart
display.
6. Filter AIS types
This function allows you to turn on or off reception from different types of AIS transmissions, for
instance if you only wanted to view Class B vessels on the chart display then select Class B On and all
the others Off.
7. Alarm
7.1. CPA Alarm
The CPA alarm is the closest approach alarm, this allows you to set a distance when the alarm will
sound if a vessel comes within that distance .
( ☞ The default setting is OFF.)
7.2. CPA Range
The values allowed are from 0.1nm to 10nm.
( ☞ The default setting is OFF.)
7.3. TCPA Alarm
The TCPA alarm is the time that a vessel will take to be in the same position as you currently are.
( ☞ The default setting is OFF.)
7.4. TCPA Range
The values allowed are from 1 to 50 min.
( ☞ The default setting is 1 min.)
7.5. Radius Alarm
When any AIS target breaks into the radius, alarming.
7.6. Radius
The values allowed are from 0.1nm to 10nm.
( ☞ The default setting is OFF.)
7.7. Ignore Vessels if Speed Less
If you want the alarms to ignore vessels that are travelling at less than a particular speed then switch
ON.
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