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Introduction .........................................................................iii
Product Support .............................................................................iii
Product Registration ......................................................................iii
Getting Started .....................................................................1
Packing List ............................................................................. 1
Transducers ............................................................................. 2
Optional Transducers ......................................................................2
Installation ............................................................................... 3
Selecting a Proper Location ............................................................3
Installing the Swivel Mount ...........................................................3
Flush Mounting the Fishfinder 250/250C Unit ...............................6
Connecting the Power/Data Cable ..................................................7
Interfacing .......................................................................................8
Installing the Transducer ..............................................................10
Transom Mount Installation ....................................................10
Shoot-Thru-Hull Installation ................................................... 11
Testing the Installation ..................................................................12
Basic Operation .................................................................13
Using the Keypad .................................................................. 13
Using the Sonar Page ........................................................... 14
Using the Adjustment Menu ................................................. 16
Adjustment Options ......................................................................17
Pausing the Sonar Page .................................................................20
Using the Main Menu ............................................................ 21
Graph Tab .....................................................................................21
Tools Tab .......................................................................................23
Configuring Advanced Data Fields .........................................23
Temp (Temperature) Tab ..............................................................25
Alarms Tab ....................................................................................25
System Tab ....................................................................................27
Units Tab .......................................................................................28
Sonar Tab ......................................................................................28
Time Tab .......................................................................................30
Understanding Sonar ............................................................ 31
Transducer Coverage ....................................................................32
Understanding the Graph ..............................................................33
Whiteline ......................................................................................34
Thermoclines ................................................................................35
Appendix ............................................................................36
Physical Specifications ........................................................ 36
Power ...................................................................................... 36
Sonar ...................................................................................... 36
Cleaning and Storage ........................................................... 36
Messages and Alarms ........................................................... 37
Software License Agreement ............................................... 38
Limited Warranty ................................................................... 38
Index ...................................................................................40
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Fishfinder 250/250C Owner’s Manual
