MILITARY CYPRES USER'S GUIDE
Airtec GmbH
Page 23
The pressure difference you select will remain indicated on the display. The
adjustment remains until the unit will be switched off again. If you like to change your
input you have to switch CYPRES off and on again, this is necessary when your
drop zone changes and has a different air pressure.
When trying to set a pressure difference which equals an air pressure at the landing
elevation of less than 200 hPa (approx. 44.000 feet/approx. 13.500 meter ASL) or
more than 1.075 hPa (approx. -1.600 feet/approx. -500 meter ASL), then the CYPRES
switches itself off after 8 seconds. The display is blank indicating that the desired
adjustment is outside the programmed parameters.
air pressure at the setting
location is 120 hPa
higher
than at the drop zone
air pressure at the setting
location is 120 hPa
lower
than at the drop zone
an example for an altitude adjustment.
The speed with which the numbers change is not constant. If the button is pressed
the numbers change in the beginning at uniform slow speed, allowing one to make
precise 1 hPa adjustments. If the button is kept pressed however the rate of change
of the numbers speeds up providing the ability to enter a large pressure difference.
If the button is released and pressed again, the numbers change again at the slow
rate. The procedure of pressing, releasing and pressing again can be repeated as
often as required. It is important to note that if the button is released for longer than
8 seconds, CYPRES will assume the process has been completed and no further
adjustment will be possible. If this is necessary CYPRES would have to be switched
off and the whole process re-started. After the 8 seconds the selected air pressure
difference remains on the display and the CYPRES can be switch off like usually.
During these 8 seconds the CYPRES cannot be switched off.
