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Understanding the split frequency screen, Understanding the temp log, Understanding the split frequency – Garmin GPSMAP 4000 User Manual

Page 49: Screen

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GPSMAP 4000 Series Owner’s Manual

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Understanding the Split Frequency Screen

Use the Split Frequency screen (dual frequency transducer only) to view both the 50kHz and

200kHz frequencies on the same screen. A 200kHz frequency graph appears on the left; a 50kHz

frequency graph appears on the right.

From the Home screen, select

Sonar

>

Split Frequency

.

Depth, temperature,

and water speed

GPS speed and

GPS heading

Transducer

frequencies

Range

Understanding the Temp Log

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 depth are shown in the top-left corner.

From the Home screen, select

Sonar

>

Temp Log

.

Temperature

and depth

Time

elapsed

Temperature

Range

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.
Press

MENU

to access scale settings. Select

Duration

to set the time elapsed scale. Select

Scale

to

set the temperature range scale.