Raymarine H6, Owner'S Manual

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vii
Operation ................................................................................................... 119
Maintenance and troubleshooting .................................................................121
Introduction ................................................................................................ 121
Troubleshooting .......................................................................................... 121
Maintenance .............................................................................................. 125
Servicing and safety ........................................................................ 125
Display screens ............................................................................... 126
Base sensors ................................................................................... 126
Lifeline transmitters ........................................................................ 128
Replacing a transmitter battery ...................................................... 128
System recovery .......................................................................................... 129
Service ........................................................................................................ 130
Contacting Raymarine ................................................................................ 130
US and Canada ............................................................................... 130
Europe and the Rest of the World ................................................... 130
On the Internet ............................................................................... 130
Appendix A:Charts ............................................................................................133
Chart types ................................................................................................. 134
Installing charts .......................................................................................... 134
C-Map NT+/PC charts from CD-ROM ............................................. 134
Maptech charts .............................................................................. 138
Appendix B: Radar .............................................................................................141
Introduction ................................................................................................ 141
What is radar? ............................................................................................ 141
Scanner .......................................................................................... 141
Maximum radar range ................................................................................ 141
Range control ................................................................................. 142
Standard range scales .................................................................... 143
Interpreting the radar picture ...................................................................... 143
Identifying false echo returns ......................................................... 144
Side lobes ....................................................................................... 145
Indirect echoes ............................................................................... 145
Multiple echoes .............................................................................. 146
Blind sectors or shadow effect ........................................................ 146
Sea clutter ...................................................................................... 146
Rain clutter ..................................................................................... 147
Interference .................................................................................... 147
Appendix C: Sonar .............................................................................................149
Introduction ................................................................................................ 149
How the sonar works .................................................................................. 149
Bottom indications ......................................................................... 149
Displaying targets .......................................................................... 150
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