Under the point "Pressure Type" the pressure
type is defined, i.e. relative or absolute
pressure.
Select the "Pressure Type" key with ">" and
change with "OK".
With "set pressure to" a pressure correction
(offset) is possible.
Select the "Set pressure to" key with ">" and
activate with "OK".
Enter / change the value by pressing the ">"
key to select the respective numerical position
and activate it by pressing the "OK" key.
Pressing ">" increases the value by 1.
Conclude with "OK" and activate the next
numerical position.
Confirm the entry by pressing the "OK" button.