v
Introduction
Table of Contents
Alarms
Fish Alarm ..................................................................................................... 22
Shallow Water................................................................................................. 22
Deep Water ..................................................................................................... 23
Battery Voltage ................................................................................................ 23
System
Contrast .......................................................................................................... 24
Beeper............................................................................................................. 24
NMEA Output................................................................................................. 24
Calibration
Keel Offset....................................................................................................... 25
Water Type......................................................................................................25
Units
Depth ............................................................................................................ 26
Temperature.................................................................................................... 26
Speed.............................................................................................................. 26
Memory
Remember....................................................................................................... 27
Factory Setup.................................................................................................. 27
Software Version.............................................................................................. 27
On the Water ....................................................................28-33
Understanding Sonar....................................................................................... 28
Transducer Coverage....................................................................................... 29
Understanding the Chart................................................................................. 30
Whiteline ........................................................................................................ 31
Thermoclines .................................................................................................. 32
Simulator Mode............................................................................................... 33
Appendix ..........................................................................34-40
Appendix A—Specifi cations............................................................................34
Appendix B—Alarm Messages and Icons......................................................... 35
Appendix C—Fishfi nder 240 Portable .......................................................36-37
Appendix D—Index...................................................................................38-40
190-00155-10 Rev A.indd 08/16/00, 2:45 PM5
