Kongsberg Simrad SN90, Руководство по установке

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381298/C
Selecting the best location for the Processor Unit..................................................45
Selecting the best location for the Operating Panel ...............................................45
Selecting the best location for the Operating Panel Power Supply ........................45
Sonar room requirements.................................................................................................47
Environment ...........................................................................................................47
Watertight integrity.................................................................................................47
Size and access .......................................................................................................48
Insulation, heating and ventilation .........................................................................48
Electrical installations, cables and communication................................................49
Bilge pump and decking.........................................................................................50
Where to install the transducer ........................................................................................51
Introduction ............................................................................................................51
Mount the transducer deep .....................................................................................51
Avoid protruding objects ........................................................................................52
Stay far away from the propellers ..........................................................................52
Choose a position far away from the bow thruster(s) ............................................52
Summary and general recommendations ...............................................................53
Acoustic noise..................................................................................................................54
Contributing factors................................................................................................54
Self noise ................................................................................................................56
Ambient noise.........................................................................................................58
Electrical noise .......................................................................................................58
Reverberation .........................................................................................................59
Some means to reduce acoustic noise ....................................................................59
Vessel coordinate system .................................................................................................61
INSTALLING THE TRANSDUCER ............................................. 64
Installation summary........................................................................................................65
Transducer installation principles ....................................................................................67
Installing the transducer for use on purse seiners...................................................67
Installing the transducer for use on trawlers ..........................................................70
Installing the transducer for navigational use.........................................................73
Placing the transducer in the vessel coordinate system..........................................76
Watertight integrity.................................................................................................81
Transducer cables installation principles .........................................................................82
Three suggested methods .......................................................................................82
Installing the transducer cables in "wet" conduit ...................................................83
Installing the transducer cables in a "dry" conduit .................................................85
Installing the transducer cables using a sealing plate.............................................87
Installation procedures .....................................................................................................88
Determining the location and installation angles of the transducer .......................88
Simrad SN90