A test facility has been constructed of which the purpose is to explore the characteristics of a thermo-hydraulic component (a "pulser") where condensation implosion events can be initiated in a controlled and reproducible manner. This paper summarizes experiments conducted in a horizontal cylindrical pulser. For design purposes, a modified Jakobs number criterion was defined. It is an index measuring the capability of the pulser water to condense all of the initial pulser steam that takes into account the heat capacity of the pulser metal and heating of water by condensation. The tests showed that in order to achieve a rapidly growing condensation rate that exceeds the inertial time constant of the vapor phase, the modified Jakobs number has to approach a value of 5. For a 0.027m(3) volume cylindrical pulser, this can be achieved when the steam contains residual amounts of air (on the order of 0.02 to 0.03 mole fraction). The paper presents experimental results characterizing the dynamic response of the pulser as a function of the liquid side turbulence.