Meridian Audio 568 - Manual (Page 118)

Troubleshooting
111
Poor picture quality
Picture quality may suffer if you do not attend to the following:
❍ Are you using suitable quality cables with good connectors?
❍ Is there a ground loop created between any of the
components connected to the 568?
Remember that reception of broadcast or cable signals can be
significantly deteriorated by cross-modulation in the RF domain.
It is unwise to attempt to cascade and mix several video
sources, eg LaserDisc, VCR, etc, to an antenna system.
Video problems