Chapter 6 MDC-1840BB/1841BB/1860BB/1810BB/1820BB Series
Using The Menu
Operation Manual
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6.7.3 ATA functions
The ATA system provides the following functions and display on the screen.
(1) Symbols:
z
Acquisition
symbols
z
Warning
symbols
(2) Target acquisition
(3) Target data display
(4) Changing the vector length
(5) Cancellation of an acquisition and tracking of target
(6) Warning limit setting
(7) Clearing all plotted targets
(8) Target number display
(9) Selecting the TRUE or RELATIVE tracking
6.7.4 Operating procedures
Perform the following procedure to use the ATA function:
(1) Move the Joystick to let the cross cursor fall on a target.
(2) Press the ACQ key to acquire the target. At the same time, the assigned target will
be braced with a dashed acquire mark with an ID number shown nearby.
(3) To acquire a next target, press the TARGET key to set the next target ID.
(4) Repeat step (1) and (2) for other targets up to ID number 9.
(5) Press the DELETE key to cancel the target tracking. The symbol of the target and
WARNING: The accuracy of the auto tracking function provided by the ATA could be
affected by the following factors:
(1) Sea clutter and weather clutter such as rain and snow may degrade the ATA tracking
capability. These clutter components should be appropriately reduced.
(2) Poor receiver sensitivity may also degrade the tracking capability.
(3) Faulty azimuth synchronization could be the cause of erratic vectors.
(4) Degraded bearing and speed data fed from external sensor devices also cause erratic
vectors.
If any of the errors stated above are detected, the following data provided by the ATA will be
erratic.
(1) The CPA and TCPA value.
(2) The target ship’s course and speed.
(3)
The target ship’s bearing and distance.
