Professional HD-SDI Fiber Converter 1080P with Tally RS485 40km Transmission 8-Channel Audio Embedded for Broadcast and Surveillance Applications

E-link 1080P HD-SDI Fiber Converter LNK-MHD-1V1D1T Series Mini-type HD-SDI Fiber Converter supports 1-channel HD-SDI Video (audio embedded) & Tally and Reverse RS485 signal transmitted via fiber optical cable, and monitor the signal locally over a HD-SDI loop output. Overview The LNK-MHD-1V1D1T Series represents a professional HD-SDI fiber transmission solution engineered for modern broadcast and video production environments. This advanced mini-type HD-SDI fiber converter delivers reliable HD-SDI video transmission with embedded audio, tally signaling, and bidirectional RS485 control over single-mode fiber infrastructure. Designed as a compact professional HD-SDI fiber system, it enables seamless integration of camera systems and production equipment while maintaining broadcast-grade signal quality throughout the transmission path.This sophisticated HD-SDI fiber converter operates as a matched transmitter and receiver pair, ensuring complete signal integrity from source to destination. The integrated HD-SDI fiber solution features a local loop-through output that provides real-time monitoring capability while maintaining uninterrupted primary signal transmission to control rooms or production facilities. The rugged industrial HD-SDI fiber construction guarantees stable performance in demanding conditions, making it equally suitable for permanent studio installations and mobile field production setups.The versatile high-performance HD-SDI fiber converter maintains full compatibility with HD-SDI standards while supporting 1080P high-definition video resolution with pristine audio quality. This reliable HD-SDI fiber transmission system provides broadcast engineers and system integrators with a robust solution for extending video signals across distributed facilities while preserving original signal characteristics. The space-efficient compact HD-SDI fiber design allows for flexible installation in equipment racks, broadcast flypacks, and mobile production units where physical space is often limited.Engineered for maximum operational flexibility, this professional-grade HD-SDI fiber converter supports comprehensive production workflows through its integrated tally system and camera control capabilities. The advanced fiber-based HD-SDI technology delivers exceptional signal stability and complete immunity to electromagnetic interference, making it particularly valuable for installations in electrically challenging environments. This high-quality HD-SDI fiber solution meets the rigorous demands of broadcast television, live event production, and professional AV applications where uncompromising signal integrity and operational reliability are essential for successful mission-critical operations. Multi-Channel Audio Embedding Each video channel carries 8 embedded audio tracks, enabling synchronized audio-video transmission without separate cabling infrastructure. Automatic Signal Equalization Built-in cable compensation technology maintains signal integrity for all data rates up to 1.5Gb/s, compatible with Belden 1694A and equivalent coaxial cables. Application Broadcast & Live ProductionDeployed in outside broadcast vans and live event production, this HD-SDI fiber converter transmits 1080P video with embedded audio over single-mode fiber with 40km reach and tally support for remote camera operations.Studio & Production FacilitiesUsed in broadcast studios and production control rooms, the converter enables camera-to-control room links with RS485 control and pathological pattern handling for professional broadcast workflows.Security & Surveillance SystemsIdeal for city surveillance networks and traffic monitoring, the device provides long-distance transmission of uncompressed HD video with hot-swap capability for continuous operation.Corporate & Education AVApplied in lecture halls and conference rooms, this fiber converter enables high-quality video transmission between multiple buildings with LED status monitoring for system reliability. Why Choose Us Intelligent Multi-Rate ReclockingSelf-adjusting signal processing automatically locks to SDI rates from 270Mbps to 1.48Gbps, ensuring stable synchronization across varying signal conditions.Seamless Camera System IntegrationDirect compatibility with professional HD-SDI camera systems enables plug-and-play operation without signal conversion or quality degradation.Extended Fiber Transmission ReachRobust optical transmission capability supporting distances up to 40km over single-mode fiber while maintaining broadcast-quality performance.Hot-Swappable Operation DesignHot plug capability allows for system maintenance and component replacement without disrupting ongoing operations or powering down equipment.Advanced Signal ProcessingComprehensive pathological pattern handling with uncompressed digital transmission meeting professional broadcast standards and signal integrity requirements. Technical Indexes Fiber Optical interface                                                                   Fiber interfaceSimplex LCTransmission distance550m-40KmWavelength1310nm/1550nmVideoVideo interfaceBNCVideo input/output impedance75ΩVideo input/output voltageTypical:1Vpp, Min 0.5Vpp, Max 1.5VppVideo Bits RateMax 1.5Gb/sDifferential gain (10%～90% APL)<1%SDI format support625/25 PAL525/29.97 NTSC, 525/23.98 NTSC720p50, 720p59.941080i 23/24/30/50/59.941080P 23.98/24/30Video SDI standard270Mbps (SD-SDI)1.485Gbps/M(HD-SDI) Data Physical interfaceIndustrial standard screw terminalData typeTally and Reverse RS485Frequency/Rate supportMax. 115200bps for RS422Max. 57600bps for RS485BER<10ˉ9ElectricalPower adaptorDC 5V Type-CPower consumption<5WLED IndicatorSDISDI videoP/TPower SupplyMechanicalDimensions (LxWxH)72 x 42 x 22 mmWeight0.6KG/pairCasingAluminum CaseMounting OptionsDesktopEnvironmental Working Temperature0℃～ 55℃Storage Temperature-20℃～ 70℃Working Humidity0~95%MTBF≥100000 hours Ordering Information ModelDescriptionLNK-MHD-1V1D1T-MMMini-type HD-SDI Fiber Converter with Tally Reverse RS485 and loop out, MMF, LC Fiber Connector 550 meters, including Transmitter and Receiver, used by pairsLNK-MHD-1V1D1T-20Mini-type HD-SDI Fiber Converter with Tally Reverse RS485 and loop out, SMF, LC Fiber Connector 20KM, including Transmitter and Receiver, used by pairsLNK-MHD-1V1D1T-40Mini-type HD-SDI Fiber Converter with Tally Reverse RS485 and loop out, SMF, LC Fiber Connector 40KM, including Transmitter and Receiver, used by pairs https://www.youtube.com/@E-linkChina