Furuno FR-1710 manual Noise Rejector, Time Alarm, Enhanced Video

1.35 Noise Rejector

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

To suppress white noise:

1.Press the [MENU] key.

2.Press the [5] key twice to show the ECHO SIG menu.

	ECHO SIG
1.	TGT COLOR	YEL			GRN	COLOR
2.	ECHO AVG	OFF			0.5	1 2 3
3.	INT REJ	OFF			1 2	3
4.	N REJ	OFF			ON
5.	ENHANCE	OFF			ON
6.	2ND ECHO	OFF			ON
7.	CONTRAST	1	2		3
8.	CLTR SWEEP	OFF		ON(LINK) ON(FIX)
9.	SWEEP LVL	1	2		3
0. CNTR ENHANCE		OFF			ON

Figure 1-45 ECHO SIG menu

3.Press the [4] to select OFF or ON from the N REJ field as appropriate.

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

1.36 Time Alarm

The time alarm gives an aural at a predeter- mined interval.

To silence the alarm, press the [AUDIO OFF] key. The label T-ALM turns to normal color and the timer is reset to initial value and starts the count-down sequence again.

To activate the time alarm:

1.Press [MENU], [0] twice and [4] twice to display the TIME ALARM.

TIME ALARM

1.↑

2. ALARM INTV	OFF	3M	6M
	12M 15M		20M

Figure 1-46 TIME ALARM menu

2.Press the [2] key to select desired interval (3, 6, 12, 15, 20 min) from the ALM INTVL field.

3.Press the [ENTER/SELECT] key to con- clude your selection followed by the [MENU] key to close the menu.

1.37 Enhanced Video

On long ranges target echoes tend to shrink in the bearing direction, making them difficult to see. On short and medium ranges such as 1.5, 3 and 6 nm scales, the same size targets get smaller on screen as they approach the own ship. These are due to the inherent prop- erty of the radiation pattern of the antenna. To enhance target video, use the enhanced video function. It enlarges target echoes in bearing and range direction on 1.5-6 nm scales.

1.Press the [MENU] key followed by the [5] key twice to show the ECHO SIG menu.

	ECHO SIG
1.	TGT COLOR	YEL			GRN	COLOR
2.	ECHO AVG	OFF			0.5	1 2 3
3.	INT REJ	OFF			1 2	3
4.	N REJ	OFF			ON
5.	ENHANCE	OFF			ON
6.	2ND ECHO	OFF			ON
7.	CONTRAST	1	2		3
8.	CLTR SWEEP	OFF		ON(LINK) ON(FIX)
9.	SWEEP LVL	1	2		3
0. CNTR ENHANCE		OFF			ON

Figure 1-47 ECHO SIG menu

2.Press the [5] key to select OFF or ON from the ENHANCE field.

3.Press the [ENTER/SELECT] key, and then press the [MENU] key.

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