
EA 600 / Base version
IV 857-164688 / E
Software installation 27......................................
Software installation of unlisted printer 29.......................
3 TRANSDUCER INSTALLATION 30..........................
3.1 Transducer location 30........................................
General 30................................................
Go deep 30................................................
Boundary water layer 30.....................................
Propeller noise 31...........................................
Vessel heave 32............................................
Noises from protruding objects on the hull 32.....................
Summary 33...............................................
3.2 Ways of mounting the transducer 34.............................
Inclination of the transducer face 34............................
External mount 34..........................................
Transducer blister 36........................................
In a box keel 38............................................
Retractable transducer 38.....................................
Centre board 40............................................
Flush mounting in a steel tank 41..............................
Behind a protective acoustic window 42.........................
Inside the hull 43...........................................
3.3 Approved anti--fouling paints 46................................
4 GENERAL PURPOSE TRANSCEIVER (GPT)
DESCRIPTION AND MAINTENANCE 47.........................
4.1 Description and main functions 47..............................
Overview 47...............................................
4.2 GPT drawing 48.............................................
Circuit boards and modules 49.................................
4.3 GPT -- Theory of operation 50..................................
Overview 50...............................................
Simplified block diagram 51..................................
4.4 Circuit board descriptions 52...................................
Overview 52...............................................
Digital Signal Processing board, DSP-6x 53......................
TRX board 55..............................................
I/O board 56...............................................
GPT Power supply 57.......................................
4.5 Maintenance on the GPT 59...................................
5 REPLACEMENT PROCEDURES 65...........................
5.1 Introduction 65..............................................