2. RADAR OPERATION

2.18.2 Starting echo trails

1.If not displayed, press the HIDE/SHOW key to show the radar soft keys.

2.Press the D: TARGET soft key.

3.Press the A: TRAIL soft key.

4.Press the A: TRAIL ON/OFF soft key to select ON.

5.Press the E: RETURN soft key twice to finish.

“TRAIL,” the echo trail time selected and elapsed time appear at the top right-hand corner of the display. Then, afterglow starts extending from all targets. Trails are restarted when the range or mode is changed and zoom or shift is turned on.

For continuous trails, the maximum continuous trail time is 99 minutes and 59 seconds. When the elapsed time clock counts up to that time, the elapsed time display resets to zero and trails begin again.

To turn off echo trail, press the A: TRAIL ON/OFF soft key to select OFF at step 4 in the above procedure.

Trails are restarted when the range or mode is changed and zoom or shift is activated.

2.18.3 Trail gradation

The echo trails can be shown in single or multiple gradations. Multiple gradation paints the trails thinner with time, like the afterglow on an analog PPI radar.

1.If not displayed, press the HIDE/SHOW soft key to show the radar soft keys.

2.Press the D: TARGET and A: TRAIL soft keys.

3.Press the C: GRAD soft key to select SINGLE or MULTI as appropriate.

4.Press the E: RETURN soft key twice to finish.

MultitoneMonotone

Multitone and monotone trails

2.18.4 Trail color

Trails may be shown target trails in blue, yellow, green or white.

1.If not displayed, press the HIDE/SHOW key to show the radar soft keys.

2.Press the D: TARGET, A: TRAIL and D: TRAIL COLOR soft keys in that order.

TRAIL COLOR

BLUE

YELLOW

GREEN

WHITE

Trail color window

3.Use the Trackball to select the color desired, then press the C: ENTER soft key.

4.Press the E: RETURN soft key twice.

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Furuno 1834C-BB, GD-1920C-BB Starting echo trails, Trail gradation, Multitone and monotone trails, Trail color window