MDC-900 Series
Chapter 2 How to use the menu
0093142132-05
2-14
Types and Meanings of ATA Symbols
In the ATA, the symbols are displayed, overlaying on acquire-started targets.
NOTE:
The ATA vector and the AIS vector may differ in terms of the vector length and its direction. This is not a
fault. The ATA vector is developed based on the past target positions stored either by automatic
tracking (ATA). Meanwhile, the AIS vector is generated from the navigation data sent from the AIS
transponder. The ATA vector take a certain time until they are fully displayed, while the AIS vector is
displayed as soon as the AIS data is received from the AIS transponder and own GPS/SHIP
information.
Normal Symbol
Alarm Symbol
Meanings
Meanings
Displayed when setting the acquisition.
Displayed when in the stable tracking state.
Displayed when numeral-displayed after the stable
tracking state.
Displayed when the values are lower than the set
CPA and TCPA.
Displayed when targets become in the tracking
inability state.
After displayed the alarm sounds
.
After 5 seconds, both the display and the alarm
disappear.
After 1 minute,
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