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Barometer
The barometer features include:
Altitude, ascent and descent
l
Temperature during training (can be viewed on the display)
l
V800 measures altitude with an atmospheric air pressure sensor and
converts the measured air pressure into an altitude reading. This is the most
accurate way to measure altitude and altitude changes (ascent / descent)
after calibration. Ascended and descended are shown in meters/feet.
To make sure that the altitude remains accurate, it needs to be calibrated
whenever a reliable reference, such as a peak or a topographic map, is
available or when at sea level. Calibration can also be set to automatic. This is
especially useful if a training session is always started in the same
environment. Pressure variations due to weather conditions, or indoor air-
conditioning, may affect altitude readings.
The temperature shown is the temperature of your V800. When wearing V800
on your wrist, your body heat affects the temperature reading. To get an
accurate air temperature reading, take V800 off your wrist for 15-20 minutes.
Altitude is automatically calibrated with GPS, and the altitude will be
shown in gray until it is calibrated. To get the most accurate altitude
readings, it is recommended to always manually calibrate altitude when you
know your current altitude. Manual calibration can be done in the pre-
training view or in the training view quick menu. For more information, see
"Quick Menu" on page 61
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