Diagram shown in Fig. 1 presenting utilized test-stand and comprising the following fixture:
high frequency pressure sensor responsible for transformation of the pressure changes signal into electric signal,
conditioner securing power supply for sensor and sensor signal normalization,
fiber optic cable connection between the A/D and D/A converters responsible for galvanic separation of high potential setup part (sensor, conditioner) and low potential set-up fixture (e.g. oscilloscope),
recording device characterized by 100 000 sampling rate,
triggering device responsible for switch opening instant adjustment (current phase) and trigger–recorder synchronization,
capacitive character of load to increase voltage across the switch contacts, induce restrikes and elongate arcing time,
voltage divider and current transformer to provide permanent supplying voltage