The camera happily recorded scope traces that presumably contain the secret info Rossi supposedly was trying to protect.
Even though the high voltage reaction activation pulse is called out in Rossi's patent, he did not address the input signal's component parts displayed on the oscilloscope. The light leakage out the side connector betrayed the pulse. The oscilloscope did not show that HV pulse. It was very fast. A more capable oscilloscope would have given more info on the details of the input signal, but revealing that info was not in Rossi's best interests.