Sensoray 953-ET - Manual (Page 5)

Introduction
Model 953 is a 4-channel PCIe/104 audio/video codec. It is capable of simultaneous
capture of up to four channels of analog video and audio at full TV frame rate (30 fps for
NTSC or 25 fps for PAL). Model 953 implements H.264, MPEG-4, or MJPEG
compression for video, and G.711 or AAC for audio. The following container formats are
supported: MPEG-TS and MP4 (for H.264 and MPEG-4), AVI (for MJPEG and raw).
Elementary video and audio streams are available as well.
A low latency uncompressed stream is provided for each channel for real-time preview.
Each channel of model 953 is capable of producing two concurrent output video
streams. The streams could be any combination of compressed and uncompressed.
Compression type, target bitrate, and resolution could be set independently for each of
the eight output streams. The total amount of sent data can not exceed approximately
that of one full resolution uncompressed (YUV) stream.
Each of the four channels can work as a decoder, converting digital audio/video stream
into analog (composite video and line audio).
Decoding is guaranteed only for
streams captured with model 953. Simultaneous encode and decode are supported
with some limitations (see the Software Manual for details).
Model 953 provides general purpose optoisolated inputs and outputs (4 of each).
The board is implemented using a single-lane (x1) PCI-Express interface, and designed
for PC/104 and/or EPIC form factor. All signals are passing through a PCIe/104 bus
connector supporting both stack-up and stack-down configurations. Model 953
implements link shifting allowing the use of up to four PCIe/104 boards in one stack.
Power is supplied via the PCIe/104 bus connector.
System Requirements
A basic Model 953 application (capture of four compressed streams and preview of four
compressed streams) will work on an ATOM class processor based PCIe/104 or
PCI/104-Express SBC (Single Board Computer).
RAM size is dictated more by an operating system and application requirements. A list
of tested PC/104 form factor SBCs is posted at model 953 web page. Please contact
Sensoray for an evaluation unit of model 953 to test it with an embedded SBC of your
choice.
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