DPCAV Oracle Manual del usuario

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The Oracle video diversity controller is used

to bridge two wireless video receivers

together. Dual receivers can be used to help

reduce RF multi-path problems, as well as

allow for other signal improving techniques.

FEATURE SUMMARY

Universal wireless video receiver compatibility (NTSC or PAL).

Two channel audio support (stereo audio or voice/data).

Very high bandwidth. No A/V signal degradation.

Two buffered video outputs.

Buffered audio output.

No special installation requirements (uses standard RCA connectors).

Low voltage alarm.

Operates on 6VDC to 14VDC (90mA typical).

Oracle is an intelligent video switch with two A/V (audio/video) inputs that are merged into a

single output. In a typical installation, it constantly monitors the video signals from two user

supplied wireless video receivers. Whenever Oracle determines that the currently chosen A/V

source has corrupted video, it automatically switches over to the other A/V source (if it is error

free). The switching is very fast, which helps maintain A/V quality.

Oracle can be used to create a spatial diversity antenna system. This configuration involves

placing the antennas (from two receivers) at slightly different locations. As little as a few inches

apart is enough to offer some signal improvement. Spatial diversity is used to reduce

multipathing interference, which is a common nuisance with RF wireless video systems.

It is also possible to install vastly different antennas on the two video receivers to enhance the

overall antenna performance. For example, you can combine a moderate gain patch antenna

and a high gain directional Yagi for automatic switching from short to long range. Maybe you

want to extend the beamwidth of your antenna system? If so, then use two similar

receivers/antennas to nearly double the beam width. Or, perhaps pair up a 900Mhz and

2400Mhz video system for the ultimate in frequency diversity and redundancy.

The antenna strategy you choose will depend on your operating environment and application

requirements. Although Oracle cannot eliminate all video problems, using it with a carefully

chosen receiver/antenna setup will certainly help minimize reception issues.

RACLE

IDEO

IVERSITY

AGE

ONTROLLER

Jan-2008