AntcuFaalb said:
Can you think of another test for bad AGCs?
Not something that can be distributed online. Jagabo was able to trigger his 650 USB with VHS and a cable box but not test patterns: http://forum.videohelp.com/threads/331817-Best-MPEG-2-Capture-Device?p=2057256&viewfull=1#post2057256
Maybe if the test pattern were recorded to VHS? Dunno.