This paper presents the diagnostic system for time‐of‐flight neutron measurement consists of a number of mobile stands enabling to acquire transient electrical signals from spatially separated scintillation probes. The battery power supply of all the employed devices and only optical coupling with outside appliances as well as efficient shielding against electromagnetic interference allow carrying out data acquisition by means of the mobile stands in a harsh electromagnetic environment. The usefulness of presented system was proven in experiments carried out on the plasma‐focus PF1000 device, installed at the Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland.