GPS Receiver Owner's Manual
Table Of Contents
- Introduction
- Getting Started
- Using Charts
- Using the Navigation Chart
- Changing the Navigation Chart Settings
- Using the Split Navigation Chart
- Using Perspective 3D
- Using Mariner’s Eye 3D
- Using Fish Eye 3D
- Using Fishing Charts
- Enabling High Resolution Satellite Imagery
- Viewing Aerial Photos
- Viewing Current-station Information
- Detailed Road and POI Data
- Using Automatic Guidance
- Using the Chart/Sonar Screen
- Where To?
- Viewing Information
- Configuring the Chartplotter
- Using Sonar
- Using Digital Selective Calling (DSC)
- Using XM WX Weather and Audio
- Appendix
- Index

46 GPSMAP 400/500 Series Owner’s Manual
Using Sonar
Depth, temperature, and speed
Range
Frequencies
Split Frequency
Understanding the Split Zoom Screen
Use the Split Zoom screen to view the full sonar data from the graph
and a zoomed in portion on the same screen.
From the Home screen, select Sonar > Split Zoom.
Transducer frequency
or beam width
Depth, temperature,
and speed
Range
Zoom
window
Zoomed
depth scale
Zoom level
Split Zoom
Understanding the Temp Log Screen
If you are using a temperature-capable transducer, the Temp Log
screen keeps a graphic log of temperature readings over time. The
current temperature and the depth are shown in the top-left corner.
From the Home screen, select Sonar > Temp Log.