Menu-1, menu-2, system menu operation -4, Rejecting sonar interference and noise -4 – Furuno CSH-7 User Manual
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INTERPRETING THE DISPLAY
Seabed Echoes .......................................................................................................................6-1
Fish Schools ...........................................................................................................................6-2
Sea Surface Reflections ......................................................................................................... 6-3
Wake ...................................................................................................................................... 6-3
False Echo by Sidelobe.......................................................................................................... 6-4
Noise and Interference ...........................................................................................................6-4
MAINTENANCE
Display Unit Maintenance ..................................................................................................... 7-1
Hull Unit Maintenance ..........................................................................................................7-2
TROUBLESHOOTING
When the Transducer Cannot be Retracted ...........................................................................8-1
Diagnostic Tests ..................................................................................................................... 8-3
SPECIFICATIONS
.......................................................................................................9-1