Furuno FAR-2157-D, FAR-2157-BB installation manual Suppressing Main Bang, Echo ADJ menu

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]

1BACK

2CABLE ATT ADJ AUTO/MANUAL 30

3HD ALIGN 000.0°

4TIMING ADJ

0

5MBS 0

6DEFAULT ANT HEIGHT 5/7.5/10/15/20/ 25/30/35/40/45/ more 50 m

7NEAR STC CURVE 2/2.5/3/3.5/4.2

8MID STC CURVE

3/4/5/6

9FAR STC CURVE 6/7/8

0RING SUPPRESSION 0

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.

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