What is the function of the vario neutral point function in Set-Mode 11 of the IQ Basist?
It very rarely can happen that the pointer of the vario doesn't settle to the zero position (aging). In this case you can zero it again in Set-Mode 11 of the IQ Basis. For this you should have the instrument switched on for at least 10 minutes before going to Set-Mode 11. To zero, press Enter twice. While doing this, the instrument should be placed indoors, preferably on a day without wind. The erratic changing of the numbers which is displayed is normal and not a malfunction.