Second-Trace Echoes - Furuno FAR-2807(-D) series Operator's Manual

1. RADAR OPERATION
1.38

Second-trace Echoes

In certain situations, echoes from very distance targets may appear as false
echoes (second-trace echoes) on the screen. This occurs when the return echo
is received one transmission cycle later, or after a next radar pulse has been
transmitted.
To reject second-trace echoes:
1. Left-click the MENU box to open the menu.
2. Select 1 [ECHO] to open the ECHO menu.
1 BACK
2 2
3 TUNE INITIALIZE
4 PM
5 SART
6 WIPER
7 ECHO AREA*
8 [PICTURE SELECT]
9 STC RANGE
3. Select 2 2
4. Select OFF or ON as appropriate.
5. Push the right button twice to close the menu.
1-74
Tx repetition
Actual range
Second-trace echoes
[ECHO]
ND
ECHO REJ
OFF/ON
OFF/ON
OFF/ON
OFF/1/2
1
CIRCLE/WIDE/ALL
+00
ECHO menu
ND
ECHO REJ.
Second-trace
echo
False echo
range
1
* Not available on IMO or A type