Garmin GPSMAP 420, Owner'S Manual, Page: 69 / 72

GPSMAP 400/500 Series Owner’s Manual
Index
sonar
advanced settings 47
cone 17
full screen 44
scroll speed 46
setting up 46–47
specifications 55
split frequency 44
split zoom 45
temperature log 45
Sonar Setup 46
specifications 54
Speed Filter 37
Speed Sources 38
Split Frequency 44
Split Zoom 45
spot depths 14
Surface Noise 47
symbols 14
System Alarms 41
System Information 37
viewing 6
system settings 37
T
Temp Log 45
Temp Offset 42
Tides/Currents 12
tide stations 32
viewing information 12
Time (options) 38
tracks 18 , 26
transducer
dual frequency 47
transferring data 33 , 34
Trip Odometer 31
True (north) 38
turn the unit off 3
Turn Transition 38
U
unit ID number 6
units of measure 37
user data
backing up 34
clearing 33
transferring 34
viewing 33
V
version (software) 37
VHF radio 49
viewing
currents 32
other boats 35
tide stations 32
user data 33
W
WAAS 37
water temperature 57
Waypoint IDs 39
waypoints 15
creating 24
deleting 24 , 25
depth 47
edit existing 15 , 24
mark current location 24
moving 24
viewing 33
Where To 22
Whiteline 47
Z
zoom 48
2x 48
4x 48
split 48