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The Serial Digital Interface (SDI) is a digital video interface standard developed by the SMPTE organization.For example, the ITU-R, the BT.656, SMPTE. 259M defines a digital video interface for broadcast level; a famous HD serial digital interface standard (HD-SDI) that provides a data rate of 1.485 Gbit/s. A double-link HD-SDI standard is defined in the SMPTE 372M , the interface consists of a pair of SMPTE 292M links, capable of providing a 2.970 Gbit/s data transfer rate.The interface widely used in digital cinema or HDTV HDTV 1080P, it can have better fidelity and resolution than conventional HDTV. In the recent years, the interface 3G-SDI consisting of a single 2.970 Gbit/s serial link is defined in SMPTE 424M, which will replace the double-link HD-SDI.

These standards are used to transmit uncompressed, unencrypted digital video signals in broadcast television devices, which may also be added as necessary embedded audio and time code.Coaxial cable transmission, the distance is generally less than 300m.The fiber specification as defined by the SMPTE 297M can be long-distance transmission is limited to the maximum fiber length or repeater.Usually, SDI and HD-SDI are applied to professional vision only .In frequency devices, various license agreements limit unencrypted digital interfaces, banning them from using consumer devices such as Blu-Ray and individuals use in video CR.

SDI Standard List (colored as supported)

                Standard                Name                Bit rate                Video format example
                SMPTE 259M                SD-SDI                270 Mbit/s, 360 Mbit/s, 143 Mbit/s, and 177 Mbit/s                480i, 576i
                MPTE 344M                ED-SDI                540 Mbit/s                480p, 576p
                SMPTE 292M                HD-SDI                1.485 Gbit/s, and 1.485/1.001 Gbit/s                720p, 1080i
                SMPTE 372M                Dual Link HD-SDI                2.970 Gbit/s, and 2.970/1.001 Gbit/s                1080p
                SMPTE 424M                3G-SDI                2.970 Gbit/s, and 2.970/1.001 Gbit/s                1080p
                TBA                6G UHD-SDI                6 Gbit/s                4K30Hz
                TBA                12G UHD-SDI                12Gbit/s                4K60Hz

Advantages

It is a no compression, no delay of radio and television level optical terminal machine, pure hardware architecture, strong stability, high compatibility, anti-interference, support for pathological code module use;

It is highly flexible, on the basis of it can be based on different application scenarios, add video, independent audio, data, ethernet, telephone, contact closure and other functions.Plug and plug type board card design, can be mounted on a 2U chassis, convenient user unified management, maintenance;

It standard transmission distance can be up to 20KM, optical module single multi-mode compatibility, plug and plug optical module design, can be used according to the actual needs of the site can replace the optical module, it is simple to operate, plug and play, without debugging;

It is widely used in long-distance radio and television, medical surgery system, high-quality video and audio transmission system, remote multimedia teaching, video conference system, urban intelligent traffic monitoring system (ITS), safe city, military communication, military monitoring;

Specifications

                Fiber index
                Wavelength                 1270/1330nm
                Rate                 3G bps
                Tx power                 >-6db
                Rx sensitivity                 >-14db
                Fiber connector                 LC
                Video index
                Signal type                 DVB -ASI、SD-SDI、 HD-SDI、 3G-SDI
                Work standards                 DVB-ASI 、SMPTE259M-C、SMPTE292M、SMPTE424M
                Bit rates                 270 Mbps、 1. 485 Gbps、 2. 97Gbps
                Video input / output
                Signal type                 1 single-link DVB-ASI, SD-SDI, HD-SDI, 3G-SDI digital video with local loop out
                Input impedance                 75 Ohm
                Enter the automatic cable equalization                 >80m (1. 485 Gbps@BELDEN8281 cable)
                Clock recovery                 When 270 Mbps, 1. 485 Gbps, and 2. 97Gbps are automatic, the others are bypass
                Input level                 800mVp-p±10%
                Enter the echo loss                 >10dB @ 2. 97 Gbps
                Output DC offset                 <±0. 5V
                Output echo loss                 >10dB @ 2. 97 Gbps
                The biggest shake                 <0. 1UI(1485Mbps)
                Signal overshoot                 <5% (1485Mbps)
                Data index
                Transmission direction                 1-channel reverse transmission
                Work pattern                 Half-duplex mode
                Level type                 RS485 (2-wire system)
                Bit error rate                 <10^-9
                Rate                 0-400Kbps
                Physical interface                 Phoenix terminal
                Equipment information
                The shell metal                 Aluminium alloy
                Way to install                 Wall-mounted / card type
                Product size                 104*108*28mm
                Product net weight (unit: pair)                 0.45KG
                Product weight (including the outer packaging)                 0.75KG
                Packing size                 275*219*54mm
                Input voltage                 100VAC~242VAC, 50-60Hz
                Power supply                 DC 5V
                Power dissipation                 <1.5W
                Overload protection                 provide
                Over current protection                 provide
                Other indexes
                Operating temperature                 -20°C ~75°C
                Storage temperature                 -40°C ~85°C
                Relative humidity                 From 5 to 95% (non-condensing)
                Working life                 > 100,000 hours

Connection Diagram

3G-SDI-1Vv1D-TR connection

The connection diagram is for reference only

Product Types

S/no Product Configuration Size Power Supply Remarks
1 2 channel forward 3GSDI video 192*167*28mm DC 5V Can increase the loop out, RS485 data function
2 4 channel forward 3GSDI video 192*167*45mm DC 5V Can increase the loop out, RS485 data function
3 8 channel forward 3GSDI video 445*220*45mm A C100-240V Can increase the loop out, RS485 data function
4 16 channel forward 3GSDI video 445*220*45mm A C100-240V Can increase the loop out, RS485 data function
5 1 channel bidirectional 3GSDI video 192*167*28mm DC 5V Can increase the loop out, RS485 data function
6 2 channel bidirectional 3GSDI video 192*167*45mm DC 5V Can increase the loop out, RS485 data function
7 4 channel bidirectional 3GSDI video 445*220*45mm A C100-240V Can increase the loop out, RS485 data function
8 8 channel bidirectional 3GSDI video 445*220*45mm A C100-240V Can increase the loop out, RS485 data function