4-Channel 3G-SDI Fiber Converter with Tally RS485 20km Transmission for Multi-Camera Broadcast and Live Production

E-link 1080P 4Ch 3G-SDI Fiber Converter LNK-3GSDI-4V1D4T Series supports 4Ch 3G-SDI /HD-SDI standard high-definition video signal and RS485 and Tally signal transmitted via single fiber optical cable. 3G-SDI Video over Fiber Converters includes one transmitter and one receiver for 1080P 3G-SDI signal. Overview The LNK-3GSDI-4V1D4T Series represents a sophisticated 4Ch 3G-SDI transmission solution engineered for professional broadcast applications. This advanced multi-channel 4Ch 3G-SDI system delivers comprehensive signal distribution capabilities, supporting four independent channels of 3G-SDI/HD-SDI high-definition video signals alongside RS485 control and Tally signaling through single fiber optic infrastructure. Designed as a versatile professional 4Ch 3G-SDI solution, it enables reliable transmission of 1080P 3G-SDI signals while maintaining broadcast-grade quality across all channels.This high-performance industrial 4Ch 3G-SDI converter operates as a matched transmitter and receiver pair, ensuring complete signal integrity from source to destination for critical broadcast operations. The sophisticated fiber-based 4Ch 3G-SDI technology efficiently transmits all four video channels through a single optical fiber while supporting comprehensive loop output functionality, four-channel Tally management, and bidirectional RS485 communication. The rugged hardened 4Ch 3G-SDI construction guarantees stable performance in demanding broadcast environments where signal reliability and operational continuity are paramount.The reliable enterprise-grade 4Ch 3G-SDI solution maintains uncompressed video quality throughout the transmission path, ensuring pristine image reproduction that meets professional broadcast standards. This mission-critical 4Ch 3G-SDI system is particularly valuable for live production trucks, broadcast studios, and remote production facilities where multiple camera feeds require simultaneous transmission without compromising signal quality or control capabilities. The user-friendly professional 4Ch 3G-SDI design simplifies complex multi-camera setups while providing the robust performance required for 24/7 broadcast operations.Engineered for maximum efficiency, this high-density 4Ch 3G-SDI converter significantly reduces fiber infrastructure requirements by consolidating four independent video channels onto a single fiber strand. The innovative space-saving 4Ch 3G-SDI architecture provides broadcast engineers and system integrators with a comprehensive solution for distributing multiple high-definition video feeds across distributed production facilities, making it an ideal choice for applications where channel density, signal quality, and operational reliability are essential requirements for successful broadcast operations. Multi-Channel Video Transmission Four independent 3G/HD-SDI channels over single fiber optic cable enable simultaneous multi-camera signal distribution. Automatic Signal Equalization Built-in cable compensation technology maintains signal integrity across varying cable lengths and conditions. Application Live Broadcast ProductionDeployed in outside broadcast vans and live event production, this 4Ch 3G-SDI converter transmits multiple camera feeds with tally signaling for multi-camera production and live broadcasting.Studio Production FacilitiesUsed in television studios and production control rooms, the device enables multi-camera transmission with RS485 control for studio cameras and broadcast equipment.Sports Broadcasting SystemsIdeal for sports venues and stadium installations, this fiber converter provides multi-channel video transmission with extended distance for sports production and event coverage.Remote Production NetworksApplied in distributed production and remote sites, the SDI extender supports multiple camera signals with uncompressed quality for remote broadcast and production systems. Why Choose Us Intelligent Rate Detection & ReclockingSelf-adjusting signal processing automatically locks to SDI rates from 270Mbps to 3Gbps for stable synchronization.Seamless Camera System IntegrationDirect compatibility with 3G/HD-SDI camera systems with quad-channel loop output for local monitoring.Extended Fiber Transmission Range20-kilometer transmission capability with optional distance configurations for flexible deployment scenarios.Multi-Channel Tally SupportFour independent tally channels provide comprehensive camera status indication and production control.Broadcast-Grade Signal QualityUncompressed digital transmission maintains original signal quality meeting professional broadcast standards. Technical Indexes SDI InputSMPTE 424M, SMPTE 292M, SMPTE 259M, DVB-ASI, DVB-SSI and Telecom/Datacom270Mbit/s – 1.48Gbit/s – 3Gbit/sInput number: 4Reflection loss: >15DBEquilibrium: 0-150m @3Gb/sConnector: BNCOpticsChannel: 1Type: single-modeTransmission distance: 20km (Other distance Optional)Reflection loss: > 15dBDithering: < 0.2UIConnector: FC/UPC (SC, LC, ST optional)SDI OutputOutput number:4Signal level: 800mV nominalRise/fall time: 200ps indicationOvershoot: < 10% amplitudeReflection loss: >15dBDithering: < 0.2UIConnector: 75Ω BNCData1Ch RS-485 (full/half duplex) and support NRZ, RZI and ManchesterMax. 57600bps for RS485Connector: Industrial standard screw terminal4Ch Tally: A, B , C, DPower and environmental indicationOperating temperature: -10℃～＋55℃Power Input: 1A@12VDCEMI/RFI: meet FCC Part 15 Class A, EU EMC standardAverage time trouble-free: >100000 hoursSDI video format supports625/25PAL; 525/29.97NTSC; 525/23.98NTSC; 720p50; 720p59.94;1080P23.98/24/30/50/60; 1080i 23/24/30/50/59.94; Ordering Information LNK-3GSDI-4V1D4T4Ch 3G-SDI Video with Loop output backward RS485 4Ch Tally, SM 20km, FC/ST/SC/LC Optional, including 1 transmitter & 1 receiver, used by pairs https://www.youtube.com/@E-linkChina