(ˈflɒpəʊvə) n (Broadcasting) televisioninformalUS the constant vertical fluctuation of the image on a television screen caused by faulty tuning
flopover
flopover
[′fläp‚ō·vər] (electronics) A defect in television reception in which a series of frames move vertically up or down the screen, caused by lack of synchronization between the vertical and horizontal sweep frequencies.