An ionization chamber of an analytical apparatus in which high concentration test sample ions are evaporated is provided with an ion introduction control means to control the quantity of the test sample ions introduced to an ion attracting electrode. The present invention also relates to processes for preparing said compounds, pharmaceutical compositions containing them and their use, alone or in combination with other HBV inhibitors, in HBV therapy. The input signals may come from multiple antennas, multiple sensors, multiple channels, etc. For each communication, support blocks comprising the chip vectors are produced.