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SENSORAY Model 516 MPEG2 audio/video capture board

SENSORAY Model 516 MPEG2 audio/video capture board


  • Real-time MPEG-1/MPEG-2 video encoder/decoder for NTSC, PAL
  • Text overlay
  • Supports variable and constant bit rates
  • 16-bit audio
  • 3 TTL digital I/Os
  • Low latency Windows stream player

Model 516 is a PC/104 frame grabber that captures and transfers full-frame (640 x 480) video at 30 frames per second. It overcomes the low bandwidth of the PC/104 bus by using hardware compression to produce encoded MPEG-2 and MPEG-1 data streams of 440 kbits to 10 Mbits per second. It also has two audio input channels that are synchronized to the MPEG data.


MPEG2 data reduces the amount of memory required to store full motion video. The compressed data requires a smaller transmission bandwidth. This makes it possible to transmit 30 frames/sec video and audio over the PC/104 bus or over a 10/100 Base-T Ethernet. The hardware compression circuit uses a motion estimation algorithm to produce smooth images from interlaced cameras. The length of MPEG2 video streams is not limited by the viewing software.


Encoded MPEG2 data can also be decompressed by the 516’s hardware to produce composite video and audio. The video output is available at a flat cable header. The audio output is available at an audio jack and the flat cable header.

Video channels

The 516 has four multiplexed video channels that function as four separate composite channels or as two S-video inputs. Only one channel can be compressed at a time

Digital I/O

Two bi-directional logic lines are under software control.

Text caption buffer

A 64 character buffer is available for adding text to each frame. The text is within a transparent box that may be positioned anywhere within the frame.

Self test

Digitized video and audio inputs can be looped back to the output circuits to allow camera and sound adjustments. The 516’s D/A can be programmed to generate color test bars. This is useful for testing the video output channel.

Lost video detection

The status of the camera’s vertical and horizontal sync signals may be used to detect the presence or absence of the camera signal. The included software allows reading these signals to detect a lost video signal.

Software compatibility

Model 516 has been tested and verified with the following: Suse 9.0-2.6.11, Suse 9.0-2.4.18, Suse 9.0-2.6.9, Fedora 2.6.10, 301 Linux, and Suse 7.3 (2.4.18).

Supported streams Elementary (Audio & Video), Program
Output data MPEG-2 streaming data at rates of 440 kbits to 10 Mbits/second
Capture rate 30 frames/second (NTSC, RS-170, CCIR)
25 frames/second (PAL)
A/D resolution 8 bits luminance
8 bits chrominance
Input Resolution 704x480 (NTSC)
704x576 (PAL)
Output resolution 768x576 (PAL)
704x480 (NTSC, RS-170)
Video input 4 Composite or 2 S-video
Video output PAL or NTSC from a BNC connector
Text overlay 64 characters
Audio levels ±1.0 V
Audio sampling rate 48 kHz
Digital I/O
I/O ports 2 ports
Type 2 bi-directional TTL signals
Bus type PC104
Address mapping Memory-mapped
516s per system 4
Power and Environmental
Power input 5 V, 600 mA
Operating temperature 0 to 70 °C
Board dimensions (W x H): 3.55 x 3.78 inches
Mating connectors
Crimp housing Molex P/N 51110-2450
Crimp pin Molex P/N 50394-8100
Crimp tool Molex P/N 11-01-0204
Ribbon cable connector Molex P/N 87568-24X
Feel free to request a quote