Thread: VA62 barsweep
View Single Post
  #5  
Old 06-06-2020, 12:06 PM
JohnCT's Avatar
JohnCT JohnCT is offline
VideoKarma Member
 
Join Date: Jan 2020
Posts: 749
Quote:
Originally Posted by old_tv_nut View Post
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.
Good info. Thanks.

John
Reply With Quote
Audiokarma