System-Calibration Menu - Furuno MFD12 Operator's Manual

13. How to Adjust Settings
13.5.2

System-Calibration Menu

The [System-Calibration] menu lets you enter the offsets for external sensors (speed,
wind, temperature) to show true values on the display.
Draft: In the default setting, the fish finder shows the depth from the transducer. For
depth from the surface, set the draft of your vessel here.
Speed Through Water: If the speed indication is wrong, add an offset to the speed
output by the speed sensor to get the correct speed indication. For example, if the
speed indication is 10 kt and the true speed is 11 kt, enter +10%.
Sea Surface Temperature: If the temperature indication is wrong, add an offset to the
temperature output by the temperature sensor to get the correct temperature indica-
tion. For example, if the temperature indication is 60 degrees and the true temperature
is 54 degrees, enter -6.
Wind Damping Time: Set wind damping time. The setting range is 0-99 (seconds).
Wind Speed Calibration: If the wind speed indication is wrong, add an offset to the
wind speed output by the wind sensor to get the correct wind speed indication.
Wind Direction Offset: If the wind direction indication is wrong, add an offset to the
wind direction output by the wind sensor to get the correct wind direction indication.
Water Type: Select the type of water your vessel is used in, saltwater or freshwater.
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