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For the most accurate barometric pressure
readings,you should program your current
Altitude into yourWeatherGuide™. If the
current altitude is unknown,one reference
for altitude maps in the US is:
http://www.ngdc.noaa.gov/mgg/topo/state.html.
To program altitude:
1. Press and hold the“HISTORY” button.
The unit will beep.The “mb/hPa” and
“inHg” icons flash.
2. Press “+C/F” or “-PMCR/RCC” to
choose either“mb/hPa or“inHg” pres-
sure displays. Press “HISTORY” to se-
lect.The altitude digits flash.
3. Press the “+C/F” or “-PMCR/RCC”
buttons to scroll through prepro-
grammed altitude options.Press“HIS-
TORY” to select.
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.)
Press and hold History to start
altitude setting.
Altitude digits flash.
Press +C/F or -PMCE/RCC to
select pressure units.
Press History to select
Press +C/F or -PMCE/RCC to
scroll through altitudes units.
Press History to select.
Pressure units.
Altitude digits.
Altitude is set.