Furuno 1715 manual Noise Rejector, Echo Trail, Trail Brilliance, Echo Stretch, Echo trails

1.17 Noise Rejector

The noise rejector suppresses white noise, which appears on the screen as many dots scattered randomly over the display.

1.Press the [MENU/ESC] key to open the User menu.

2.Press ▲ or ▼ to choose NOISE REJECTION from page 1.

3.Press ► to open the options window.

4.Press ▲ or ▼ to choose OFF, LOW or HIGH as appropriate.

5.Press the [MENU/ESC] key to close the menu.

1.18 Echo Trail, Trail Brilliance

Echo trails are the afterglow of target echoes that represent their movements relative to own ship. They are useful for monitoring target movement.

Trails are painted for the time period chosen. When the time period has elapsed, trails are erased and restarted. Trails are also erased and restarted whenever the range is changed or zoom or shift is activated.

30S TRAIL	Trail time
	(No time shown
	in case of
	continuous trails)

Echo trail

1. OPERATION

4.Press ▲ or ▼ to choose appropriate time, or OFF to cancel echo trails. “CONTIN.” paints trails continuously.

5.Press ◄ to close the options window.

6.Press ▼ to choose TRAIL BRILLIANCE.

7.Press ► to open the options window.

8.Press ▲ or ▼ to choose LOW or HIGH as appropriate.

9.Press the [MENU/ESC] key to close the menu.

“TRAIL” and trail time (no time shown in case of “CONTIN.”) are shown at the upper right-hand corner on the screen.

1.19 Echo Stretch

On long ranges target echoes tend to shrink, making them difficult to see. To enhance target video on long ranges, use the echo stretch feature.

1.Press the [MENU/ESC] key to open the User menu.

2.Press ▲ or ▼ to choose ECHO STRETCH from page 1.

3.Press ► to open the options window.

4.Press ▲ or ▼ to choose OFF, LOW or HIGH as appropriate. LOW stretches echoes in the bearing direction; HIGH stretches echoes in the range and bearing directions. “ES L” or “ES H” appears at the top right-hand corner when echo stretch is turned on.

5.Press the [MENU/ESC] key to close the menu.

Echo trails

1.Press the [MENU/ESC] key to open the User menu.

2.Press ▲ or ▼ to choose ECHO TRAIL from page 2.

3.Press ► to open the options window.

Echo

Echo Stretch

OFF

ES L

Brg dir.

Echo Stretch

LOW

ES H

Brg dir.

Rng

dir.

Echo Stretch

HIGH

OFF 30sec 1min 3min 6min

CONTIN.

Echo trail options

How echo stretch works

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