vIntroductionTable of ContentsAlarmsFish Alarm ....................................................................................................... 22Shallow Water ................................................................................................. 22Deep Water ...................................................................................................... 23Battery Voltage ................................................................................................. 23SystemContrast ........................................................................................................... 24Beeper ............................................................................................................. 24NMEA Output ................................................................................................. 24CalibrationKeel Offset ....................................................................................................... 25Water Type ....................................................................................................... 25UnitsDepth .............................................................................................................. 26Temperature .................................................................................................... 26Speed ............................................................................................................... 26MemoryRemember ....................................................................................................... 27Factory Setup .................................................................................................. 27Software Version .............................................................................................. 27On the Water ................................................................... 28-33Understanding Sonar ....................................................................................... 28Transducer Coverage ....................................................................................... 29Understanding the Chart ................................................................................. 30Whiteline ......................................................................................................... 31Thermoclines ................................................................................................... 32Simulator Mode ............................................................................................... 33Appendix ......................................................................... 28-33Appendix A—Specfications ............................................................................. 34Appendix B—Alarm Messages and Icons ......................................................... 35Appendix C—Fishfinder 100 Portable ....................................................... 36-37Appendix D—Index ....................................................................................... 38-