Garmin FishFinder 340C Owner's Manual page 37

NOTE: If the boat is not moving fast enough or the speed
sensor is not registering a speed, a "Boat Is Not Moving Fast
Enough To Calibrate" message appears at the bottom of the
screen. Check that the speed sensor wheel is moving or safely
increase boat speed. If there is a problem with the Fishfinder
speed sensor, or if a speed senor is not installed, a "Water
Speed Sensor Is Not Working" message appears at the bottom
of the screen. Check the connections of the speed sensor cables.
Temp (Temperature) Tab
The Temp tab enables you to control the temperature log (if your
boat is equipped with a temperature transducer/sensor). The
graph reads from right to left, so that the most recent temperature
measured appears on the far-right side of the log. The dotted lines
within the graph indicate intervals in the temperature scale and the
duration of time.
Fishfinder 340C Owner's Manual
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The following settings are available:
• Log and Graph Scale—sets the temperature range (in
degrees) for displaying on the log and on the Sonar Pages.
Select Auto to have the Fishfinder automatically determine
the best range, or select a Span of 2, 4, 6, 8, or 10 degrees.
• Log Duration—sets how fast or slow the temperature
log scrolls; the shorter the time duration, the faster the
temperature log scroll. Select a duration from 1 Minute to
2.5 Hours. 10 Minutes is the default.
• Temperature Log—records the water temperature as you
move through the water, so that you can look for temperature
changes over a period of time.
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