Doc,
I was doing the attempts with a Tek 2235 (and a Tek 450 earlier--but that was with a film camera). The problem wasn't that the scope couldn't be set up to capture the event, for me the problem was that the event was a non-repeatable one shot, that required me to perform several measurements, including the area under the curve and several duration measurements that were dependant upon the decay rate of the curve to specify the exact end point for the duration measurement. Perhaps it was my inexperience with scopes (I am by no means an expert) however I couldn't figure a way to do that without using a photographic capture. Indeed what gave me the idea in the first place, was a write-up from one of Edgerton's minions who described doing much the same process using an old poloroid oscope camera...
Regards,
Walt