-=IDENTIFY HOW YOUR CABLE HAS BEEN SCRAMBLED=-
You can't win the war if you don't know your enemy, right. Well then how
do you expect to descramble your cable without knowing how it's scrambled. Just compare
the images below to your scrambled stations to find out how the channels are scrambled.
Sync Suppression
Sync Suppression is easily identified by the "wavy bar" that
wiggles through the picture. This bar is actually the horizontal
blanking interval.
A close look at the bar, will show 4 bands
(white,black,colored,white). The black band is the sync (or lack
of it) and the colored one is the color burst. This information is
normally hidden behind the right edge of the picture tube.
Video Inversion
Video Inversion involves more than just inverting all the video
information. The active video (the stuff that lies between the two
sync intervals) is all that gets inverted. The sync and color
information remain at their proper polarity. This causes the
color burst to be phase shifted 180 degrees, in respect to the
chroma. The end result is a negative image (dark = light) with a
color shift (ie: yellow = blue).
This method is usually coupled with sync suppression.
SSAVI Suppression
The SSAVI system is easily identified by the "dotted" line
that
appears near the top of the screen. These "dots" are actually the
authorization data contained on lines 10-13 of the vertical
interval.