MILITARY CYPRES USER'S GUIDE
Airtec GmbH
Page 25
4.4.1.2 Altitude adjustment using the calculator
(relative adjustment method)
If the atmospheric (absolute) air pressure values to perform the altitude adjustment
are not known, it is possible to do the altitude adjustment using the ft/hPa-(or m/
hPa-)calculator. This calculator can be ordered separately and is available in different
languages.
When using the calculator, the following vital points are to be considered:
•
Please read carefully the chapter 4.4.1 where the conventional method to do
the altitude adjustment (by entering the absolute air pressure values) is
described.
•
If the calculator shows values which appear above a red line, these values
exceed the calculator's range and may not be used. In this case, the altitude
adjustment must be performed by entering the absolute air pressure values.
•
The altitude (or the cabin pressure) must be kept constant during the entire
switch on procedure.
•
When using this calculator, weather influences are not considered.
•
For system reasons, small inaccuracies can occur with the use of this calculator.
•
All capabilities of CYPRES are utilized and a higher accuracy is achieved if you
follow the altitude adjustment procedure by entering the absolute air pressure
values.
