Furuno FR-1710, Operator'S Manual

Page: 44 / 78

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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.