Furuno MODEL CSH-73 Operator's Manual page 5

FUNCTION KEYS
Programming the Function Keys ...........................................................................................6-1
Replaying a Function Key ..................................................................................................... 6-2
Function Key Fine Tuning ..................................................................................................... 6-2
Saving Function Key Settings to a Memory Card ................................................................. 6-3
Replaying Function Key Settings from a Memory Card .......................................................6-3
ADVANCED LEVEL OPERATION
Finding Fish School Center ...................................................................................................7-1
Tracking a Fish School (target lock) ...................................................................................... 7-2
Detecting Fish Schools Aurally ............................................................................................. 7-7
The Fish Alarm ...................................................................................................................... 7-8
Relocating Fish School for Easy Observation .......................................................................7-9
Comparing of Fish School Concentration ...........................................................................7-10
Measuring Fish School Speed ............................................................................................. 7-11
The Event Mark ...................................................................................................................7-12
True Motion Display ............................................................................................................7-14
Plotting Net Location Mark .................................................................................................7-15
Setting Distances Between Net Sonde Transmitters ............................................................7-16
Observing Net Behavior ......................................................................................................7-17
Port/Starboard, Horizontal Slice Displays ...........................................................................7-18
Turning Marks, Data On/Off ...............................................................................................7-20
SAVING, REPLAYING PICTURE
Initializing Memory Cards..................................................................................................... 8-1
Saving the Picture .................................................................................................................. 8-2
Transferring Echo Data from Internal Memory to Memory Card ......................................... 8-2
Saving Net Shooting Data ..................................................................................................... 8-3
Replaying Saved Data ...........................................................................................................8-4
Deleting Memory Card Contents ...........................................................................................8-4
INTERPRETING THE DISPLAY
Seabed Echoes .......................................................................................................................9-1
Fish Schools ...........................................................................................................................9-2
Sea Surface Reflections ......................................................................................................... 9-3
Wake ...................................................................................................................................... 9-3
False Echo by Sidelobe.......................................................................................................... 9-4
Noise and Interference ...........................................................................................................9-4
WARNINGS
Overvoltage Warning ...........................................................................................................10-1
Unretracted Transducer Warning .........................................................................................10-1
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