[old_tv_nut]

Have never tried to do IF alignment on a bar sweep (multiburst, as it is also called). Probably OK for the overall shape at 1 MHz and above, and sound traps could be adjusted based on the 4.5 MHz burst. However, the 0.5 MHz response is affected by the slope around the video carrier and it's hard to tell what you're doing there because you get energy from both the upper sideband and the vestigial sideband. Could result in some video smears, even though the amplitude of the 0.5 MHz is OK. But then, a customer who doesn't know all this may not complain about minor smearing, having seen ghosts that are worse.