Dual Beam Sonar ................................................................. 6
1.
2.
Data interface .............................................................. 21
Menu Operations
Chart speed .......................................................... 22
Noise Filter ........................................................... 22
Color line .............................................................. 24
Sensitivity ............................................................ 25
Fish ID. Sens ........................................................ 25
Water type .......................................................... 26
Frequency ........................................................... 27
TCG Control .......................................................... 28
Depth Range ......................................................... 29
Zoom Range ......................................................... 30
Backlight .............................................................. 31
Echostyle .............................................................. 32
Keel offset ............................................................ 33
Beeper ................................................................. 34
Simulator ............................................................. 35
Languages ............................................................ 36
System info .......................................................... 36
Load default .......................................................... 37
Depth units ........................................................... 38
Fish ID alarm ........................................................ 38
Shallow ................................................................ 39
Battery ................................................................. 40
Trouble Shooting ................................................................. 41
Maintenance........................................................................ 43
Storage ............................................................................... 44
Echofish 820 - Installation & Operation manual
Table of contents
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