Garmin GPSMAP 420 Owner's Manual page 5

Configuring the Unit ..........................................................29
Configuring System Settings ............................................... 29
Changing Units of Measure .................................................. 29
Configuring Communications Settings ............................... 30
Setting Alarms ....................................................................... 31
Configuring My Boat ............................................................. 32
Configuring Other Boats ...................................................... 34
Configuring XM Audio ........................................................... 34
Using Sonar .......................................................................35
Understanding the Full Screen ............................................ 35
Understanding the Flasher ................................................... 35
Understanding the Split Freq Screen .................................. 36
Understanding The Split Zoom Screen ............................... 36
Understanding the Temp Log Screen .................................. 37
Setting Up Sonar ................................................................... 37
Advanced Sonar Settings ..................................................... 38
Installing The Unit .............................................................39
Step 1: Select a Location ...................................................... 39
Step 2: Mount the Unit .......................................................... 40
Step 3: Install the Transducer .............................................. 42
Step 4: Install the Wiring Harness ....................................... 48
Step 5: Test the Installation .................................................. 51
GPSMAP 400 Series Owner's Manual
®
Appendix ............................................................................53
Specifications ........................................................................ 53
Product Registration ............................................................. 54
Caring for the Unit ................................................................. 54
Alarms and Messages ........................................................... 55
Weather Data Warranty ......................................................... 59
XM Satellite Radio Service Agreement ................................ 60
Software License Agreement ............................................... 60
Limited Warranty ................................................................... 61
FCC Compliance .................................................................... 62
Industry Canada Compliance ............................................... 62
Optional Accessories ............................................................ 62
Index ...................................................................................63
I
ntroductIon
iii