Press and hold History to start
altitude setting.
Pressure units.
Press +C/F or
select pressure units. Press History to select
Altitude digits flash.
Press +C/F or
Press History to select.
Altitude digits.
Altitude is set.
For the most accurate barometric pressure readings, you should program your current Altitude into your WeatherGuide™. If the current altitude is unknown, one reference for altitude maps in the US is:
http://www.ngdc.noaa.gov/mgg/topo/state.html.
Toprogram altitude:
1.Press and hold the“HISTORY” button. The unit will beep.The “mb/hPa” and “inHg” icons flash.
2.Press “+C/F” or
sure displays. Press “HISTORY” to se- lect15. The altitude digits flash.
3.Press the “+C/F” or
4.The display will shortly return to the
Barometric Pressure display. (Note: Both 'mb' and 'hPa' altitudes will be expressed in meters, while 'inHg' is expressed in feet.)