Furuno FR-1710 manual Target Trails Echo Trails, Past plot points, True or relative trails

Past plot points

Past plot points may be marked on the dis- play with as many as nine dots. You can turn this display on/off as follows:

1.Press the [MENU] key.

2.Press the [7] key twice to select PLOT.

		PLOT MENU 1
1.	MARK DISP		OFF	ON
2.	ERASE
3.	VEC REF		REL	TRUE
4.	VEC TIME		30S	1M	3M	6M
			15M	30M
5.	CPA SET		OFF	0.5NM 1NM 1.5NM
			2NM	3NM	4NM
			5NM	6NM
6.	TCPA SET		30S	1M	2M	3M
			4M	5M	6M	12M	15M
7.	TRACK		OFF	ON
8.	AUDIO ALARM		OFF	ON
9.	INTVAL*			1M	2M	3M	6M
			30S
0.	↓ *

* Requires ATA Board ARP-17.

Figure 1-28 PLOT menu

3.Press the [7] key to select OFF or ON from the TRACK field as appropriate.

4.Press the [ENTER/SELECT] key to reg- ister your selection followed by the [MENU] key to close the menu.

1.26 Target Trails (Echo Trails)

It is possible to display the trails of the radar echoes of targets in the form of synthetic af- terglow. Target trails are selected either rela- tive or true and may be sea or ground stabilized. The simulated afterglow can be se- lected in a single tone or gradual shading de- pending on a setting on the TGT TRAIL menu. Note that afterglow is shown in light yellow when the echo color is green.

True or relative trails

You may display target trails relative to north or own ship heading in Relative Motion. True motion trails require a compass signal and own ship speed input to cancel out own ship’s movement and present true target move-

ments in accordance with their over-the- ground speeds and courses.

a)True target trails-no smearing of stationary targets

b)Relative target trails-all targets moving relative to own ship

Figure 1-29 Target trails

Note: When relative trail on the TM mode, the legend REL TRAIL appears in red.

To select true or relative target trail presen- tation:

1.Press the [MENU] key.

2.Press the [2] key twice to show the TGT TRAIL menu.

	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 1-30 TGT TRAIL menu

3.Press the [2] key several times to select REL or TRUE from the MODE field as appropriate.

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