HD-SDI Repeater for Long Range

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• published: 01 Aug 2012
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HD-SDI Extra Long Range Repeater from MX. HD SDI signal over 75Ω coax cable up to 200M. Supports SDI (SMTP 259M), HD-SDI (SMTP 292M), 3G-SDI (SMTP 424M). Supports video signals NTSC, PAL, 720p, 1080i, 1080p. Built in RS485 control with half duplex speed up to 57,600 bps, which effects only when using 2 pieces or more than 2 pieces long range installation. Ability to do multiple repeaters application up to 5 pieces with distance 1KM (Max.) Ability to send power to next repeater unit over coax cable from the remote repeater (nearest the DVR) when using 2 piece or more than 2 pieces Long range installation new network architectures to take advantage of the fiber's strengths. What is SDI? Serial digital interface [SDI] standard is based on a 270 Mbps transfer rate, over a single 75 ohm coaxial cable [BNC connector], up to 600 feet. Serial Digital Interface is a [standard definition] digital broadcast television standard providing a lossless digital encoding of standard NTSC and PAL formats [with embedded audio]. SDI is used in Television stations, cable channels, and professional production Equipment. SDI provides a method for transmitting uncompressed digital video, audio and other data between video devices. SDI is described in ITU R BT 601 standard for interface of component digital video. SDI is defined in SMPTE259M and ITU-R BT.656 standards. SMPTE259M defines four standard bit rates from 143Mbps to 360Mbps [ 270Mps is common]. SMPTE 344M adds a 540Mbps bit rate. One component of luminance (with 720 samples per line), and two of color (each with 360 samples per line). There are either 10 or 8 bits per sample [scrambled, polarity independent interface, with common scrambling for both component ITU-R 601 and composite digital video and four channels of (embedded) digital audio]. The SDI bit stream is encoded using a pseudo-random scramble followed by a NRZ-to NRZI conversion. The scramble code is x9+ x4+1. What is HD-SDI? HD-SDI stands for High-Definition Serial Digital Interface. It is the common term for a high-definition digital video transmission standard known as SMPTE 292M. The SMPTE 292M standard is part of a family of Serial Digital Interface standards that use a coaxial cable to transport uncompressed digital video -- currently still predominantly used in professional TV studios. In short, HD-SDI is a standard for transmitting uncompressed broadcast-grade HD video signals over short distances (although longer distances are possible with fibre optic cables). More than 400 interface standards are published by the Society of Motion Picture and Television Engineers (SMPTE), an internationally recognised industry organisation that develops common standards, practices and guidelines mostly for television and cinema. HD-SDI Bit Rates The 292M interface of the HD-SDI standard has a nominal data rate of 1.5 Gbps. To be precise, the standard specifies two exact bit rates: a) 1.485 GbpsSupports 60 Hz, 50 Hz, 30 Hz, 25 Hz, 24 Hz and other commonly used frame rates. b) 1/485/1.001 GbpsAllows the standard to support video formats with frame rates of 59.94 Hz, 29.97 Hz and 23.98 Hz, making it upwards compatible with existing NTSC (analogue video) systems. Please subscribe to our YOUTUBE Channel: MX Electronics (MDRElex) You can also Like our Facebook Page: http://www.facebook.com/mxelectronics This video is a complete guide, however if you have any questions feel free to comment or send us an email on info@mdrelectronics.com or visit our website www.mdrelectronics.com If You Have Any Complaints, Queries Or Suggestions, Call Us On (022) 4253 6666 Or You Can Mail Us At info@mdrelectronics.com