Setting up and Using Sonar ...........................................118
Showing Sonar on the Map Page ....................................... 118
Using the Sonar Page ......................................................... 119
Adjusting the Sonar Page ........................................................... 120
Adjustment Options .............................................................. 120
Resizing the Split Screen ............................................................ 122
Using the Pointer on the Sonar Page .......................................... 122
Setting up the Sonar ........................................................... 123
Calibrating the Water Speed ....................................................... 124
Setting up the Sonar Display ...................................................... 125
Understanding Sonar .......................................................... 126
Understanding the Sonar Display ............................................... 126
Transducer Coverage .................................................................. 127
Whiteline .................................................................................... 128
Thermoclines .............................................................................. 128
Appendix ..........................................................................129
Specifications ...................................................................... 129
Care Information ................................................................. 130
Cleaning the Unit ........................................................................ 130
Storing the GPSMAP 296 ........................................................... 130
Immersing the Unit in Water ...................................................... 130
Optional Accessories .......................................................... 131
Installation Information ....................................................... 132
Connecting the Power/Data Cable .............................................. 132
Connecting Your GPSMAP 296 to a Computer ......................... 133
Information about USB Drivers ............................................ 133
Using xImage for Customized Waypoint Symbols .................... 134
Installing and Removing Data Cards .......................................... 134
Interfacing ................................................................................... 135
Removing the Antenna ............................................................... 135
Learning about GPS ............................................................ 136
Common GPS Terms .................................................................. 136
What is Differential GPS (DGPS)? ............................................ 136
Differential Field ........................................................................ 136
What is WAAS? .......................................................................... 137
LORAN TD Setup ................................................................. 138
Map Datums and Location Formats .................................. 140
Digital Selective Calling (DSC) ........................................... 141
What is a Maritime Mobile Service Identity (MMSI)? .............. 141
How are MMSI assignments obtained? ...................................... 142
United States Non-Federal User ........................................... 142
United States Federal User .................................................... 142
User Outside the United States ............................................. 142
User In Canada ...................................................................... 142
How can Garmin help you with DSC? ....................................... 142
Jeppesen Database Information ........................................ 143
Database Updates ....................................................................... 143
Messages ............................................................................. 144
Data Field Options ............................................................... 145
Safety and Product Information ......................................... 147
Index .................................................................................152
vi GPSMAP 296 Pilot’s Guide
INTRODUCTION > TABLE OF CONTENTS