4
3. Some theory
With the increase in altitude at which it measurement shall be taken the amount column of
the atmosphere decreases, as well as the pressure measured. Pressure changes with altitude within
the first 2000m above the sea are fast - with an increase of altitude about 8m atmospheric pressure
decreases about 1 hPa (see further - bar degree). As a result, measurements made at the same point
and at the same time at different heights, give different pressure values. In addition the changes in
pressure at the same point will be affected by the changes in air temperature.
4. Drivers installing
Please install on the PC the USB drivers. The drivers can be downloaded from
www.adrel.com.pl/download
- file Altimetr_Program.zip and unzip tem to any folder. Then copy
the contents of the folder …/Sterowniki_Builder/ to folder …/windows/system32. They are files :
<tee35.bpl> and <vcl35.bpl>.
Then connect the altimeter to the computer via
adapter or cable with a 5-pin tip (described above).
For the connection additional hubs can not be used.
Altimeter must be connected via a USB cable AB
type with plugs directly into the computer. Windows
automatically detects the connected device. On the
screen Found New Hardware Wizard will appear.
Select "Not this time" and press "Next".
Then select "Install from a list or specific
location" and press "Next".
Summary of Contents for ALTIMETER ALT-USB
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