2. HORIZONTAL MODE
2-42
Noise and interference
When the fishing ground is crowded with many fishing boats, the sonar is subject to
interference from ultrasonic equipment (echo sounder or sonar) on other boats as well
as those on own ship.
For instance, interference from the sonar operated on other boats will show itself on
the display as in (A) in the figure below. This interference can be suppressed by
changing the TX interval, with [TX Interval] on the [H-Scan Setting] menu. Noise from
marine life shows itself on the displays as in (B) in the figure below. This type of noise
can be suppressed with the interference rejector on the [Picture Setting] menu.
School of fish
Bottom
Ring of interference
(A) Interference from other
sonar (yours or others)
(B) Interference from marine life
Summary of Contents for FSV25S
Page 1: ...COLOR SCANNING SONAR FSV 25 FSV 25S OPERATOR S MANUAL www furuno com Model ...
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Page 32: ...1 OPERATIONAL OVERVIEW 1 18 This page is intentionally left blank ...
Page 92: ...4 NUMERIC GRAPHIC DATA DISPLAY 4 4 This page is intentionally left blank ...
Page 126: ...7 RECORD RECALL OPERATION 7 10 This page is intentionally left blank ...
Page 156: ...APPENDIX 1 MENU TREE AP 6 This page is intentionally left blank ...
Page 160: ...FURUNO FSV 25 25S SP 4 E1344S01C 140402 This page is intentionally left blank ...
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