GPSMAP 292/298 Owner’s Manual iiiINTRODUCTION > TABLE OF CONTENTSUsing Sonar .......................................................................72Sonar Page ............................................................................. 72Sonar Tab Options ................................................................ 77Understanding Sonar ............................................................ 80Flasher Page .......................................................................... 84Map Split Page ....................................................................... 85Appendix ............................................................................86Specifications ........................................................................ 86Installing the GPSMAP 292/298 External GPS Antenna..... 87Mounting the GPSMAP 292/298 ........................................... 88Installing the Transducer ...................................................... 90Connecting the Power/Data Cable ....................................... 92Interfacing .............................................................................. 93Caring for the Screen ........................................................... 93Installing and Removing Data Cards ................................... 94Satellite Information .............................................................. 95What is WAAS/EGNOS? ........................................................ 96What is a Maritime Mobile Service Identity (MMSI)? .......... 97How Are MMSI Assignments Obtained? ............................. 97Navigation Terms .................................................................. 98Messages ............................................................................. 100LORAN TD System .............................................................. 103Optional Accessories .......................................................... 105Software License Agreement ............................................. 106Product Registration ........................................................... 106Limited Warranty ................................................................. 107FCC Compliance .................................................................. 108Industry Canada Compliance ............................................. 108Declaration of Conformity (DoC) ....................................... 108Index .................................................................................109