True motion
True motion displays own ship and moving objects in their true motion.
3.3Magnifying Long Range Echoes (echo stretch)
Normally, the reflected echoes from long range targets appear on the display as weaker and smaller blips even though they are com- pensated by the radar’s internal circuitry. The echo stretch function magnifies these small blips in all ranges. Two types of echo stretch are available: ES1 which stretches echoes in bearing direction and ES2 which stretches them in both range and bearing directions.
To turn the echo stretch on or off;
1.Press the [MENU] key to open the menu.
2.Select “ES”.
3.Each press the [ACQ/ENTER] key changes the echo stretch function in the sequence of ES1, ES2 and OFF. ES1 or ES2 appears at the top
Bearing | Bearing |
direction | direction |
Range direction
Echo stretch 1 | Echo stretch 2 |
Figure 3-3 Echo stretch
Note: This function magnifies not only tar- gets but also sea clutter and radar interference. For this reason be sure the controls for ad- justment of sea clutter and radar interference are properly adjusted before activating the echo stretch.
Note: ES2 is not available on Short Range.
3.4 Echo Trail
You can show the movement of all radar tar- gets relative to your vessel in afterglow. This function is useful for alerting you to possible collision situations.
Starting echo trail
1.Press the [MENU] key to open the menu.
2.Select “ECHO TRAIL” by the omnipad.
3.Select “ACTIVATE” by pressing the [ACQ/ENTER] key.
Figure 3-4 How the echo trail feature works
TRAIL, the echo trail time selected (on “OTHER MENU”) and elapsed time appear at the top
Note: Trails are restarted when range or mode is changed or zoom or shift is turned on.
Fixed time trail
1.When the elapsed time clock counts up to the trail time selected, the elapsed time dis- play freezes.
2.The oldest portions of trails are erased so only the latest trail, equal in length to the trail time selected, is shown.
3.Trail continues.
For example, the one minute trail time is se- lected. When the elapsed time clock counts up to 60 seconds, the elapsed time display freezes at “60,” but the latest one minute of trail are erased and then trail continuous.
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