Yes, the intensity modulation of the 7A26 trace by the dot-blanking leakage is only noticeable when looking at a signal which is related in frequency to the 7S12 sweep. In my example, I'm looking at the trigger output of a S-54 pulse generator in the 7S12 and the trigger is generated by the 7S12. There is still an issue, however, when looking at signals asynchronous to the 7S12 in that the dot-blanking leakage dims the 7A26 trace significantly, especially noticeable when using delayed triggering.
