SIERRA VIDEO SYSTEMS Crestron 908012, User Manual

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SIERRA VIDEO SYSTEMS
4
Factors Affecting Quality of Results
There are many factors affecting the quality of results when signals are transmitted from
a source to a destination.
Signal cables — Use only the best quality cables to avoid interference and degraded
signal quality and elevated noise levels.
Sockets and connectors of the sources and destinations — Use only the highest quality,
since "zero ohm" connection resistance is the target. Connectors should also match
the required impedance (75 ohm in video) to minimize return loss.
Amplifying circuitry — Must have quality performance when the desired end result is
high linearity, low distortion, and low noise.
Distance between sources and destinations — Plays a major role in the final result. For
long distances (over 15 meters) between sources and destinations, special measures
should be taken to avoid high frequency cable losses. These measures include using
higher quality cables and/or adding line cable equalizing amplifiers.
Interference from neighboring electrical appliances — these can have an adverse affect
on signal quality. Balanced audio lines are less prone to interference, but unbalanced
audio should be installed away from any main power lines, electric motors,
transmitters, etc. even when the cables are shielded.
CAUTION!
Only an authorized Sierra Video Systems technician can service the control panels. Any
user who makes changes or modifications to the unit without the expressed approval of
the manufacturer will void the warranty
Use the proper AC to DC adapter to supply power to the unit.
Use only the recommended interconnect cables to connect the control panel to other
frames.