Walking the exhibit hall at ESC Boston 2016, I found more test equipment than reported from day 1.
Rohde & Schwarz demonstrated several products, including the RTH Scope Rider handheld oscilloscope.
Alongside the RTH was the RTO 2044, a four-channel, 4 GHz model.
Rohde & Schwarz recently upgraded the oscilloscope's features to add the ability to trigger on an event in the frequency domain. The video below shows how it works.