  We propose a scheme of measuring the non-Gaussian character of noise by a
hysteretic Josephson junction in the macroscopic quantum tunnelling (MQT)
regime. We model the detector as an (under)damped $LC$ resonator. It transforms
Poissonian charge injection into current through the detector, which samples
the injection statistics over a floating time window of length $\sim Q/\omega
_{\rm J}$, where $Q$ is the quality factor of the resonator and $\omega_{\rm
J}$ its resonance frequency. This scheme ought to reveal the Poisson character
of charge injection in a detector with realistic parameters.
