Sperry Marine VISIONMASTER FT ECDIS-E, Руководство пользователя

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Targets ECDIS-E User Guide
9-10 65934012
Target Monitoring
All targets are monitored for Lost Target. AIS targets (both activated and
sleeping) are monitored for CPA/TCPA using own ship's CCRP for
reference. BCR/BCT infringements use own ship's bow for reference.
Lost Target
If the system loses track of a target then a Lost Target alert (warning) is
raised for that target and an appropriate flashing alarm symbol placed over
the target’s symbol, see Target Monitoring Symbols.
Lost Target alerts can be raised on all nodes and a lost target range limit
may be set, so that only lost targets within a specified limit from own ship
will raise a Lost Target alert. For details refer to Limits and Settings.
Any flashing Lost Target alert symbols stop flashing when acknowledged
but the alert symbol remains centred over the lost target(s).
The alert symbol is automatically cleared if the target ceases to report itself
as lost.
The Lost Target alert automatically clears when there are no lost targets.
CPA/TCPA and BCR/BCT Infringement Conditions
The conditions for a target to generate an infringement are:

Both CPA/TCPA and BCR/BCT values are positive (i.e. target has
not yet reached the closest point but will do so).

Both CPA/TCPA and BCR/BCT values are less than or equal to the
limits entered.
If an infringement is detected an alert is raised and an appropriate alarm
symbol displayed flashing at the target's position. Once the alarm is
acknowledged, any flashing alert symbols stop flashing but remain over the
target(s) infringing the limits.
The alert symbol, flashing or not flashing, is removed when the target no
longer infringes the defined limits, for definition of limits see Limits and
Settings.
The alert is cleared automatically when there are no targets infringing the
defined limits.
The CPA/TCPA and BCR/BCT values for a target are shown on the Target
Data tab folder of the Selected Target sub menu.