Model 2446 is a streaming video server. It compresses either standard or high definition video and synchronized audio into an MPEG format and transmits it over an Ethernet connection using the UDP or RTP protocol. The internal CPU runs an embedded Linux operating system, with hardware compression performed by the Model 2246. The encoded video is playable by commercial set top boxes such as the Amino or PC’s running free open source software like VideoLan. The 1U enclosure fits any standard 18” server rack and can be mounted in either direction.

Latency

Depending on network conditions, the video into the 2446 can be encoded, transmitted, and displayed by a remote network decoder in less than a second.

On Screen Display (OSD)

Eight separate regions of graphics and/or text can be displayed. A total of 64k pixels is available (32k double buffered). The text style can be selected from any true-type font; graphics are displayed from standard .bmp files. There is an API to place and move graphics anywhere on the screen. OSD graphics may be edited from a remote Ethernet node and viewed by other observers on the network.

Ethernet

Ethernet based streaming is transmitted via transport stream over an Ethernet connection.

Image Processing

The 2446’s scan converter guarantees the DVI output is synchronized to LCD displays. 25 frame/second PAL sources will be displayed at the highest LCD refresh rate. Real-time image down scaling of the HDTV stream prepares it for MPEG compression.

Embedded Linux

The 2446 is pre-configured with an embedded Linux operating system for high reliability and fast response.

Video outputs

Four types of video outputs are available including an SDI video stream containing the bit-map image and text overlays. The interface to an LCD display is via a DVI port and the interface to the host computer is via a USB port. Composite video and S-video outputs are also provided. All outputs are generated and scaled from a common input source.

Software and Manuals

The 2446 is pre-configured with an embedded Linux operating system for high reliability and fast response.

Model 2446 Manual

Released 10/08

Specifications

Video Inputs
HDTV	1920 x 1080 SDI    |   1080i 25/30 fps
Video formats supported
HDTV	SMPTE 295M, SMPTE 274M, SMPTE 296M
SD-SDI	SMPTE 259M
HD-SDI	SMPTE 292M
SDTV	SMPTE 125
SDTV	ITU-R BT 601.5
SDI input specifications
Serial input data rate (max)	1.485 Gbps
Serial input voltage swing (max)	950 mVpp
Input impedance	75 Ohm, single ended
Composite
NTSC	640 x 480, 30 fps, +/- 1 Vpp
PAL	704 x 544, 25 fps, +/- 1 Vpp
S-Video	1.18 Vpp (when load - 75 Ohm)
Audio
Channels	2 stereo
Analog input voltage	1 Vpp
Input resistance	10 K Ohm, single ended
Video Outputs
DVI for LCD displays	60 Hz, 1280 x 1024 display supported at all input resolutions
DVI output voltage (max)	3.475 V
DVI output voltage swing	400~600 mVpp
ESD (HBM)	4,000 V
Composite	1.25 Vpp (when load - 75 Ohm)
S-Video	1.18 Vpp (when load - 75 Ohm)
SDI Serial output data rate (max)	1.485 Gbps
SDI Serial output voltage swing (max)	880 mVpp
SDI Output impedance	75 Ohm, single ended
Image processing
Compression types	MPEG-1 320 x 240     MPEG-2 704 x 544 MPEG-1 320 x 240     MPEG-2 704 x 544
Scaling	1080i/720i to D1 for MPEG compression
Power requirements	120VAC

Images and Mechanical Drawings

Model 2446 Enclosure Dimensions

Prices

Model 2446

HD Streaming Video Server

Qty: 1 $4,231

Qty: 2-9 $4,132