Every video interface a broadcast, control-room or CCTV project still runs into — SDI in all three generations, HDMI up to 4K, DVI, USB, KVM and analog HD — converted to fiber by one manufacturer, in transmitter/receiver pairs.
A fiber optic video converter does one job: it takes a copper video interface that was designed for a equipment rack or a desktop — a BNC carrying SDI, an HDMI lead, a DVI port — and puts that signal onto optical fiber so it can travel hundreds of metres or tens of kilometres without degradation, ground loops or electromagnetic interference. The E-Linkchina catalogue builds that job out across every interface generation a working system is likely to contain, so a project does not need three vendors for three signal types.
The range is organised by interface, not by marketing tier. The SDI line covers HD-SDI, 3G-SDI and 12G-SDI, including multi-channel and rack-mount units for broadcast plants. The HDMI line covers 1080p and 4K, down to micro dongle-format extenders that plug straight onto a source. Around them sit DVI for legacy graphics, USB and KVM for control rooms, Dante audio converters for networked audio, and AHD/CVI/TVI converters for the analog HD camera base that CCTV sites still operate. The table below samples the flagship families; follow the family pages for complete lists.
| Model (official product name) | Series | Documentation |
|---|---|---|
| 1 Ch Bidirectional 3G-SDI Video Fiber Converter with Tally + RS485/RS422 + Stereo Audio + Microphone | — | Full specification confirmed per model at quotation |
| 1Ch 3G-SDI Fiber Extender with 4Ch HDMI Output | LNK-3G-1V4H | Specification captured from the official product page |
| 1U Rack-Mountable 8-Channel 3G-SDI Fiber Converter | — | Full specification confirmed per model at quotation |
| 3G-SDI Video Fiber Converter with Audio + RS422 + Ethernet + Tally + Sync | — | Full specification confirmed per model at quotation |
| 3G-SDI Video Fiber Converter with RS485 + RS232 + Stereo Audio Channel | — | Full specification confirmed per model at quotation |
| 3G/HD/SD-SDI Optical Micro-Extender with SMB Connector | — | Full specification confirmed per model at quotation |
| 4-Channel 3G-SDI Fiber Converter with RS485 & Tally | — | Full specification confirmed per model at quotation |
| 4-Channel Bidirectional 3G-SDI Fiber Converter | — | Full specification confirmed per model at quotation |
| 8Ch 3G-SDI + 1Ch 10G Ethernet over Fiber Extender | — | Full specification confirmed per model at quotation |
| 8Ch Gigabit PoE + 6Ch Forward 3G-SDI + 2Ch Backward 3G-SDI Fiber Optic Extender | — | Full specification confirmed per model at quotation |
| Converter Board for Sony Camera Output 3G/HD-SDI and HDMI | — | Full specification confirmed per model at quotation |
| Mini 3G-SDI over Fiber Extender | — | Full specification confirmed per model at quotation |
| Mini Bi-directional 3G-SDI to Fiber Converter | — | Full specification confirmed per model at quotation |
| Mini-type 3G-SDI to Fiber Converter with Tally & Reverse RS485 | — | Full specification confirmed per model at quotation |
| 4K HDMI 2.0 4:4:4 Fiber Optic Extender | — | Specification captured from the official product page |
| 4K HDMI 2.0 KVM USB over Fiber Optic Extender Converter | — | Full specification confirmed per model at quotation |
| 4K60Hz DP Video Fiber Extender | — | Full specification confirmed per model at quotation |
| 4K60Hz HDMI Video Fiber Extender | — | Full specification confirmed per model at quotation |
A cross-section of the video range. Each family page below carries its own complete model list; the full catalogue runs to 440 models in 65 categories.
The first specification question is always which electrical interface leaves the source: BNC (SDI), HDMI, DVI, or an analog HD format. The second is how many channels share the route — the catalogue runs from single-channel mini extenders to an 8-channel 1U rack unit in the 3G-SDI family alone. Buying the channel count the project needs, rather than stacking single units, changes both the rack space and the fiber count.
The converter electronics are the same across a family; reach is set by the optical transceiver fitted — its wavelength, launch power and receiver sensitivity, against your fiber type. Before payment, confirm the exact model, its fitted module and its rated reach over your fiber (single-mode or multimode) in writing. That confirmation, not a headline distance, is what the link budget should be built on.
Working video links rarely carry video alone. Catalogue models fold in embedded audio, stereo analog audio, RS485/RS422/RS232 data for camera control, tally and sync, and in several units a Gigabit Ethernet channel — the combination units even merge PoE-fed camera channels with SDI return paths. List every ancillary signal in the inquiry; the right model usually already exists, and it is cheaper than a second converter pair.
The 1Ch 3G-SDI Fiber Extender with 4Ch HDMI Output (LNK-3G-1V4H series) shows the shape of the range: it carries one channel of 3G-SDI video with embedded audio over fiber and lets the signal be monitored locally over a 3G-SDI loop output, while the receiver side presents the feed on four HDMI outputs. One documented model covering conversion, distribution and local monitoring at once.
Yes — video over fiber is sold and deployed as a matched pair: the transmitter converts the electrical interface to light, the receiver converts it back. When you inquire, state both ends of the link; the quotation will pair them explicitly.
Several catalogue models are bidirectional, carrying a forward and a return channel on the same link — for example bidirectional 3G-SDI units with tally and RS485. Tell us the direction plan for each signal and we will match the model.
Models are offered for single-mode and multimode plants; the fitted optical module decides. Confirm your installed fiber type in the inquiry so the quoted model's module matches it — this is part of the written pre-payment confirmation.
Send the model name, the distance, the fiber type and the quantity. We will confirm the matching transmitter/receiver pairing, the optical module and the full specification of the exact model in writing before you pay.