iv
FUNCTION KEYS
Programming the Function Keys........................................................................................... 6-1
Replaying a Function Key .....................................................................................................6-1
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
Observing Net Behavior ......................................................................................................7-16
Target Slice Display.............................................................................................................7-17
PORT/STARBOARD, HORIZONTAL SLICE DISPLAYS
Port/Starboard Display ..........................................................................................................8-1
Horizontal Slice Display........................................................................................................ 8-2
MEMORY CARD OPERATIONS
Initializing Memory Cards.....................................................................................................9-1
Saving the Picture.................................................................................................................. 9-2
Transferring Echo Data from Internal Memory to Memory Card......................................... 9-2
Saving Net Shooting Data .....................................................................................................9-3
Replaying Saved Data ...........................................................................................................9-4
Deleting Memory Card Contents........................................................................................... 9-4
TURNING MARKS, DATA ON/OFF .................................................................. 10-1
INTERPRETING THE DISPLAY
Seabed Echoes .....................................................................................................................11-1
Fish Schools......................................................................................................................... 11-2
Sea Surface Reflections .......................................................................................................11-3
Wake.................................................................................................................................... 11-3
False Echo by Sidelobe........................................................................................................ 11-4
Noise and Interference......................................................................................................... 11-4