Garmin GPSMAP 78sc - Manual (Page 19)

GPSMAP 78 Series Owner’s Manual 15
Using the Main Pages
• Compass—allows you to switch
from an electronic compass to a GPS
compass when you are traveling at a
higher rate of speed for a set period
of time, or turns the compass off.
• Select To Begin—starts the
compass calibration ( page 13 ).
Elevation Plot
nOTE: The elevation plot page is
available only with the GPSMAP 78S
and GPSMAP 78Sc.
Calibrating the Barometric
altimeter
You can manually calibrate the
barometric altimeter if you know the
correct elevation or the correct pressure.
1 From the elevation plot, press MEnU.
2 Select Calibrate Altimeter.
3 Follow the on-screen instructions.
Elevation Plot Setup Options
From the elevation plot, press MEnU.
• Change Plot Type—sets the type of
data shown on the elevation plot:
◦ Elevation/Time—records
elevation changes over a period
of time.
◦ Elevation/Distance—records
elevation changes over a
distance.
◦ Barometric Pressure—records
barometric pressure over a period
of time.
◦ ambient Pressure—records
ambient pressure changes over a
period of time.
• adjust Zoom ranges—adjusts the
zoom ranges shown on the elevation
plot page.
• reset—resets the elevation plot
data:
◦ reset Trip Data—resets all trip
data.
◦ Delete all waypoints—deletes
all saved waypoints.