Furuno GP-3500 Operator's Manual page 126

9. CUSTOMIZING YOUR UNIT
NMEA TEMP CALIB
You may apply an offset to NMEA water temperature data. For details, see the
installation manual.
DEPTH SOURCE
Selects source of depth from NMEA or INTERNAL E/S. For details, see the
installation manual.
NMEA DEPTH CALIB
You can apply an offset to NMEA depth data. For details, see the installation
manual.
LAT/LON DISPLAY
Chooses how many digits (or seconds) to display after decimal point in latitude
and longitude position. The choices are DD°MM.MM', DD°MM.MMM' and
DD°MM.MMMM' DD°MM'SS.S.
RANGE & SPEED UNITS
Chooses unit of range and speed measurement from among nm, kt; km, km/h
and sm, mph)
DEPTH UNIT
Chooses unit of depth measurement from among m, ft, fa and pb.
TEMPERATURE UNIT
Chooses unit of water temperature measurement from °C and °F.
TIME DISPLAY
Chooses time notation; 12 hours or 24 hours.
BEARING READOUT
Chooses how to calculate range and bearing, TRUE or MAGNETIC.
True bearing is a bearing measured using true North as the reference direction,
and it is calculated by the formula True Bearing =Magnetic Bearing +Magnetic
Variation. Magnetic bearings are measured with magnetic north as the reference
direction.
Select MAGNETIC when using a magnetic compass, TRUE for using the
gyrocompass.
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