Video over Fiber · 12G-SDI

12G-SDI over fiber: one coax worth of 4K, kilometres of reach

Eleven 12G-SDI models for 4K production links — single and multi-channel, with Ethernet, data and tally options — because 12G over copper barely leaves the rack.

E-Linkchina 12G-SDI video fiber converter pair with BNC input, loop output and RS485 plus tally connections
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Why 12G belongs on fiber

12G-SDI carries a full 4K/60p picture on a single BNC — and on copper it pays for that density with distance: high-grade coax gives a 12G signal a working reach measured in tens of metres. Any 4K workflow that leaves one room therefore has a fiber chapter in it, whether it is a camera at the far end of a stadium, a gallery-to-studio link, or a 4K feed crossing a campus. This family is the manufacturer's answer: eleven models that convert 12G-SDI to fiber at the source and back at the destination, with the production ancillaries intact.

The range spans single-channel converters, units that add a Gigabit Ethernet path beside the 12G feed (for camera control networks and IP-based accessories), and models carrying two channels of backward RS485 plus tally — the return signalling a live 4K camera position actually needs. Because the family shares its design language with the 3G and HD lines, mixed-rate plants can standardise on one converter style across generations.

Model (official product name)SeriesDocumentation
12G-SDI Video Fiber Converter with Gigabit Ethernet and 2Ch Backward RS485LNK-12GSDI-1V2R1GESpecification captured from the official product page
12G-SDI to HDMI 2.0 ConverterLNK-CSH-12GSpecification captured from the official product page
1U Rack-Mountable 8-Channel 12G-SDI Fiber Converter—Full specification confirmed per model at quotation
4-Channel 12G-SDI Fiber Converter with RS485 & Tally—Full specification confirmed per model at quotation
4-Channel Bidirectional 12G-SDI Fiber Converter—Full specification confirmed per model at quotation
Mini 12G-SDI over Fiber Extender—Full specification confirmed per model at quotation
Mini 1Ch Forward + 1Ch Backward 12G-SDI to Fiber Converter—Full specification confirmed per model at quotation
Mini 24G-SDI to Fiber Converter with 2 x 12G-SDI (1xLC fiber)—Full specification confirmed per model at quotation
Mini 24G-SDI to Fiber Converter with 24G-SDI (1xLC fiber)—Full specification confirmed per model at quotation
Mini 24G-SDI to Fiber Converter with 24G-SDI (2xLC fiber)—Full specification confirmed per model at quotation
Mini Bi-directional 12G-SDI to Fiber Converter—Full specification confirmed per model at quotation

All 11 models in the 12G-SDI family as listed in the manufacturer's catalogue; full specifications are confirmed per model at quotation.

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How to specify

Protect the return path

A 4K camera position is a conversation: tally, intercom-adjacent data, RS485 control and often Ethernet. When specifying a 12G link, list the return signals with the same care as the video — several models in this family integrate them; a video-only unit plus three workaround boxes is the false economy.

Fiber cleanliness is a 12G discipline

At 12G rates the optical budget is unforgiving of dirty connectors and tired patch cords. Whatever model is chosen, the installation should budget for connector inspection and cleaning — and the link's optical module and rated reach should be confirmed in writing against your fiber before payment.

One fiber or two?

Models differ in whether the link runs on a single fiber (bidirectional optics) or a pair. State your available fiber count per route in the inquiry; it is a first-order filter on the shortlist.

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Where this range is deployed

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Questions buyers ask

Does 12G-SDI over fiber keep 4K/60p?

The family's purpose is exactly that: the 12G rate that carries 4K/60p is converted at the physical layer, not compressed. Confirm the exact model's supported formats in writing before payment.

Can a 12G link also carry my camera's Ethernet control?

Yes — models in this family add a Gigabit Ethernet channel alongside the 12G feed. Name the control protocol in your inquiry so the pairing is validated.

Are 12G and 3G units interchangeable on a link?

A link's two ends must be a matched pair for the same rate family. A plant can mix families across different links freely.

Confirm the exact configuration before payment

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.