Simulated time profiles and dynamic spectra of a pulse after propagating through unresolved, just-resolved, and completely resolved two-screen systems. Top left: Gaussian intrinsic pulse after propagating through an unresolved system (RP = 0.2). Top right: Delta-function intrinsic pulse after propagating through the same screen system. Bottom left: Gaussian intrinsic pulse after propagating through a just-resolved system (RP = 1). Bottom right: Gaussian intrinsic pulse after propagating through a completely resolved system (RP = 10). In this plot the dotted lines in the dynamic spectra compare the scintillation bandwidths: the injected value from Table B.1 (white) and the fit value from the bottom panel of Fig. 8 (green). Each plot consists of two panels: the bottom panel shows the pulse dynamic spectrum, showing channelization resolving broad scales of scintillation in frequency; the top panel shows the normalized sum over frequency.