Furuno FR-1710 User Manual download pdf (Page 43)

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1.33 Suppressing Second-trace

Echoes

In certain situations, echoes from very dis-

tant targets may appear as false echoes (sec-

ond-trace echoes) on the screen. This occurs

when the return echo is received one trans-

mission cycle later, that is, after a next radar

pulse has been transmitted.

To activate or deactivate the second-trace

echo rejector:

1. Press the [MENU] key followed by the [5]

key twice to display 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 1-43 ECHO SIG menu

2. Press the [6] key to select OFF or ON from

the 2ND ECHO field as appropriate.

3. Press the [ENTER/SELECT] key to con-

clude your selection followed by the

[MENU] key to close the menu.

1.34 Adjusting Brilliance of

Screen Data

You can adjust relative brilliance levels of

various marks and alphanumeric readouts

displayed on the screen as follows:

1. Press the [MENU] key.

2. Press the [9] key twice to show the BRILL

menu.

BRILL

1. TGT TRAIL

2. CHARACTER

3. HDG LINE

4. EBL/VRM

5. CURSOR

6. MARK

7. PLOT

8. OS SYMB

9. ↓*

* Requires RP-17 Board.

Figure 1-44 BRILL menu

3. Press appropriate numeric key twice to

select item to adjust. For example, press

the [1] key if you want to change the bril-

liance of target trails.

4. Operate the VRM rotary control to adjust

brilliance. Current brilliance level is dis-

played on the selected item’s bar graph.

The adjustment range is as follows;

1. ECHO TRAIL: 10%-50%

2. CHARACTER, 3. HDG LINE: 50%-

100%

4. EBL/VRM, 5. CURSOR, 6. MARK,

7. PLOT, 8. OS SYMB: 0%-100%

5. Press the [ENTER /SELECT] key to con-

clude your selection followed by the

[MENU] key to close the menu.

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