413764/B
3
Table of contents
ABOUT THIS MANUAL .............................................................. 5
EA640...................................................................................... 6
System description .............................................................................................................7
System diagram..................................................................................................................8
System units .......................................................................................................................9
Operator Station description.....................................................................................9
WBT description ......................................................................................................9
Single-beam transducers.........................................................................................10
Supply power requirements....................................................................................13
Cables and wiring requirements .............................................................................13
Compass deviation requirements............................................................................14
Noise sources..........................................................................................................14
Network security..............................................................................................................14
Support information .........................................................................................................16
PREPARATIONS ..................................................................... 17
Installation summary........................................................................................................18
About installation drawings .............................................................................................19
Tools, equipment and consumables required for EA640 installation ..............................19
Where to install the transducer ........................................................................................20
Introduction to transducer location.........................................................................20
Mount the transducer deep .....................................................................................20
Avoid protruding objects near the transducer.........................................................21
Keep the transducer far away from the propellers .................................................22
Mount the transducer at a safe distance from bow thruster(s) ...............................22
Summary and general recommendations ...............................................................22
Contributing factors................................................................................................25
Self noise ................................................................................................................27
Ambient noise.........................................................................................................29
Electrical self noise ................................................................................................29
Some means to reduce acoustic noise ....................................................................30
INSTALLING THE EA640 HARDWARE UNITS .......................... 32
Installing the WBT using the integrated brackets............................................................33
Installing the WBT in a 19" cabinet.................................................................................34
Installation Manual
Summary of Contents for EA640
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