Visual Circuits Mantis MC, Руководство пользователя

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Troubleshooting
207
Preventing Cabling and
Connection Problems
The tips below are to prevent problems related to Mantis cabling
and connections.
❏
Use high quality cable.
❏
Keep cable lengths as short as possible.
For composite video, PAL or NTSC, RG-59 the maximum
cable distances is 20 meters between the video source and
the acceptor. No signal deterioration should show on the
screen. For longer distances, up to 30 meters, use RG-11
type cable. For s-video, standard, inexpensive cables allow
operating distances of 5-7 meters. Very little deterioration is
apparent. For component video, RG-59 cables are suitable
for up to 10 meters. For longer distances, up to 20-25
meters, a better cable should be used, such as RG-11.
❏
Check that impedance of the cable actually matches the
application.The Mantis is terminated at 75 ohm.
❏
Check the connectors on the cables. Poor quality connectors
may have worse effects than the cables themselves.
❏
Use appropriate amplifiers if needed.
❏
Keep cables away from sources of interference such as
electric motors, main cables, transmitters, and light
dimmers.