The C.A. Designs signal processor SP3P-300 is a video converter for transforming video signals from SVGA or XGA PC graphics systems into composite analogue RGB video.

It may be used to enable PC graphics adapters to send their signals through conventional video switches (and / or down long cable runs) to remote monitor screens.

It accepts incoming synchronisation pulses of any polarity.

A composite video output is constructed from the input signals, modified by gating and time delays.

The cable driving amplifiers have switchable distance compensation to provide optimum picture quality at the far end of long co-axial cable runs (to improve picture sharpness).  Compensation characteristics can be adjusted to suit RG59U or RG179U (miniature) coaxial cable.

Results depend on the originating signal and the cable quality but good pictures should be obtained up to 300 metres of RG59U coaxial cable with a 1024x768 pixel non-interlaced video signal.

It is constructed as a PCI bus card (occupying a single slot) for "in PC" applications (powered from the bus).

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