Furuno FR-1710 manual Trail gradation, Selecting trail time, Restoring trails

4.Press the [ENTER/SELECT] key to con- firm your selection, then the [MENU] key to close the menu.

Trail gradation

Target trails may be shown in monotone or multitone. Gradual shading paints the trails getting thinner with time just like the after- glow on an analog PPI radar.

Monotone	Gradual shading
(Single)	(Multi)

Figure 1-31 Monotone and multitone

target trails

1.Press the [MENU] key.

2.Press the [2] key twice to select TGT TRAIL.

	TGT TRAIL
1.	TIME	15S	30S		1M	3M
		6M	15M		30M	CONT
2.	MODE	REL	TRUE
3.	SHADE	MONO		MULTI
4.	LEVEL	1 2	3
5.	TRAIL COPY	OFF	ON
6.	THIN TRAIL	OFF	ON
7.	THIN MODE	1 2	3 4

Figure 1-32 TGT TRAIL menu

3.Press the [3] key to select MONO or MULTI from the SHADE field as appro- priate.

4.Press the [ENTER/SELECT] key and the [MENU] key in order.

Selecting trail time

1.Press the [MENU] key.

2.Press the [2] key twice to select TGT TRAIL.

	TGT TRAIL
1.	TIME	15S	30S		1M	3M
		6M	15M		30M	CONT
2.	MODE	REL	TRUE
3.	SHADE	MONO		MULTI
4.	LEVEL	1 2	3
5.	TRAIL COPY	OFF	ON
6.	THIN TRAIL	OFF	ON
7.	THIN MODE	1 2	3 4

Figure 1-33 TGT TRAIL menu

3.Press the [1] key to select time desired from the TIME field.

4.Press the [ENTER/SELECT] key and the [MENU] key in order.

Restoring trails

Trails are cancelled and restarted whenever the range is changed. However, you can con- tinue trails on the same range, without re- starting, when the range is changed to a next larger or smaller range scale. Note however that when the range is changed, only those target trails within the previous range are continued; no trails are generated for targets outside of the previous range.

No trail generated for target not within previous range

Displaying, erasing target trails

Press the [TGT TRAIL] key to activate or de- activate the target trails feature. The current target trail setting is displayed at the upper right-and corner of the screen.

To remove trails from the screen, press the [TGT TRAIL] with a hit-and-release action. (Trailing continues off screen with target trail timer counting). Press the key again to redisplay the trails.

(a) Previous range (b) New range

Figure 1-34 How trail copy works

1.Press the [MENU] key.

2.Press the [2] key twice to select TGT TRAIL.

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