Haiyang HIS-75A, Manual

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AIS
5. 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.
6. Alarm
6.1. 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.)
6.2. CPA Radius
The values allowed are from 0.1nm to 10nm.
(
☞
The default setting is OFF.)
6.3. 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.)
6.4. TCPA Limit
The values allowed are from 1 to 50 min.
(
☞
The default setting is 1 min.)
6.5. 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.
6.6. Speed Less Than
The values allowed are from 0.1kt to 9.9kt.
7. Set up AIS time outs etc.
7.1. Mark vessels as lost after
If repeat transmissions are not received from a vessel after 7 minutes then the target is marked with
a
“X “.
7.2. Remove lost vessels after
If repeat transmissions are not received from a vessel after 10 minutes then the target is removed
from the chart display.
7.3. Vessel target
It is available to setup the own vessel
‟s AIS target display on the screen.
(
☞
The default setting is On.)