Using Sonar

Understanding the Depth Log Screen

The Depth Log screen keeps a graphic log of temperature readings over time. The present depth is shown in the top-left corner.

From the Home screen, select Sonar > Temp Log.

Press MENU to set the duration and the scale for the log.

Depth

Depth range

Time elapsed

Depth Log

The depth appears along the right side, and the time elapsed appears along the bottom. The graph scrolls to the left as information is received.

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.

Press MENU to set the duration and the scale for the log.

Temp and depth

Temperature range

Time elapsed

Temp Log

The temperature appears along the right side, and the time elapsed appears along the bottom. The graph scrolls to the left as information is received.

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GPSMAP 400/500 Series Owner’s Manual