Montena is a Swiss company specialized in the generation and the measurement of fast high-voltage and electromagnetic field transients. Since 1978, Montena design, manufacture and supply pulse generators, EMC test systems and large turn-key projects for assessing the immunity of electronic equipment against electromagnetic disturbances, with particular focus on high-altitude EMP and high power electromagnetic (HPEM) threats. Montena’s broadband shielded RF transmissions over fibre, the B-dot, D-dot and V-dot sensors, and the PULSELab software are especially designed for the measurement of fast transients in environments characterized by high levels of electromagnetic fields or very high voltages.