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GPSmap 76CS
GPS Navigation
The Altimeter Page
Calibrate Altimeter
Because the GPSmap 76CS relies on the Barometric pressure to deter-
mine the elevation and the pressure at any given elevation can fl uctuate,
you can calibrate the altimeter to increase its accuracy. You must know
the elevation or pressure at your current location, use a reliable source.
To manually calibrate the altimeter:
1. Use the ROCKER key to access the Options Menu.
2. Highlight the “Calibrate Altimeter” option and press ENTER to
display the Calibration Page.
3. At the message “Do You Know The Correct Elevation?” high-
light the “Yes” button and press ENTER
.
If you don’t know
the elevation, select “No” to use pressure option. If you don’t
know the pressure, select “No” to use the default GPS eleva
tion.
4. On the number keyboard, use the ROCKER
key to enter the
new elevation or pressure, then highlight “OK” and press
ENTER to return to the Altimeter Page.
Data Fields
Two data fi elds support this page and can be programmed to display
the following data options: (For defi nitions, see Appendix page 84.)
To program a data fi eld:
1. Use the ROCKER key to highlight the desired data fi eld and
then press ENTER to open the data fi eld Options Menu.
2. Use the ROCKER key to move Up or Down the menu to high-
light an option and press ENTER to place it in the data fi eld.
Calibrate using Elevation Calibrate using Pressure
Altimeter Data Fields Data Field Options List
GPSmap 76CS Owner's Guide copy.indd 25GPSmap 76CS Owner's Guide copy.indd 25 10/8/2004 8:27:34 AM10/8/2004 8:27:34 AM