Furuno FAR-2157, Installation Manual

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3-6
3.4 Suppressing Main Bang
If main bang appears at the screen center, suppress it as follows.
1. Transmit the radar on a long range and then wait ten minutes.
2. Adjust gain to show a slight amount of noise on the display.
3. Select the 0.25 nm range. Adjust sea clutter control to suppress sea clutter.
4. On the ECHO ADJ menu, choose 5 MBS.
ECHO ADJ menu
5. Spin the thumbwheel to set a suitable value so that the main bang disappears. The setting
range is 0 to 255.
6. Left-click the MENU box to finish.
[ECHO ADJ]
1 BACK
2 CABLE ATT ADJ
AUTO/MANUAL
30
3 HD ALIGN
000.0 °
4 TIMING ADJ
0
5 MBS
0
6 DEFAULT ANT HEIGHT
5/7.5/10/
15
/20/
25/30/35/40/45/
more 50 m
7 NEAR STC CURVE
2/2.5/
3
/3.5/4.2
8 MID STC CURVE
3/
4
/5/6
9 FAR STC CURVE
6/
7
/8
0 RING SUPPRESSION
0