Furuno GP-3500 - Manual (Page 126)

9. CUSTOMIZING YOUR UNIT
9-14
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.