Broadcast camera fiber comes wrapped in standards numbers — SMPTE 311, SMPTE 304, opticalCON — that get used interchangeably and incorrectly all the time. Here's what each one actually is, how they fit together at the patch panel, and when a plain fiber connector does the job instead.

The 30-second version

• SMPTE 311M is the cable: the hybrid camera cable carrying two singlemode fibers plus copper conductors for power and control — everything a system camera needs down one jacket.
• SMPTE 304M is the connector: the hybrid electrical/fiber-optic connector (the familiar LEMO-style "SMPTE connector") on the ends of that cable, at the camera, the CCU, and every wall plate and panel in between.
• opticalCON is Neutrik's ruggedized fiber-only connector system (DUO carries two fibers on an LC core) — not a SMPTE hybrid replacement, but the right choice where the camera or device gets power locally and only light needs to travel.

Why hybrid? Power is the whole point

A studio or OB system camera needs bidirectional video, control, and operating power. SMPTE 311M cable with 304M connectors delivers all of it through one connection — which is why it's the standard for camera chains in studios, stadiums, and trucks. The trade-off is that hybrid infrastructure needs hybrid-aware hardware everywhere the cable lands: connector panels, wall boxes, and breakout points that respect both the optical and electrical halves.

Where the panel comes in

Between a camera position and the CCU, hybrid runs land on patch panels and wall plates. You have three ways to build that interface:

1. Hybrid feedthrough — SMPTE 304M connectors on both faces; the hybrid signal passes straight through. Simple, and keeps power and fiber together.
2. Break-out — split the hybrid into its parts: fiber continues to optical patching while the electrical half breaks out separately. AVP's SMPTE 304M hybrid break-out modules do exactly this, with LEMO connectors on the hybrid side and an electrical mating cable on the copper side.
3. A hybrid panel system — AVP's HybridXE line puts LEMO (SMPTE 304M-2003) and opticalCON connectors on precision-machined modules in 6- and 8-position 2RU panels, so camera-chain and fiber-only circuits share one engineered panel standard.

SMPTE hybrid vs opticalCON: how to choose

Two practical notes. First, hybrid and fiber-only worlds meet more than you'd think — a break-out module lets a hybrid camera run join your ordinary LC patching once the power half is dealt with. Second, everything here is singlemode: keep your building trunks singlemode and the camera world plugs in cleanly.

Common questions

What does the SMPTE connector look like? A circular push-pull hybrid connector (LEMO-style) with two fiber channels and electrical contacts in one shell — chassis versions mount in panels and wall boxes.

Can I patch SMPTE hybrid like regular video? Not through ordinary fiber adapters — the power half needs hybrid-rated hardware. That's what feedthrough and break-out panels are for.

Is opticalCON compatible with LC? Yes — opticalCON is built around an LC core; the chassis connectors accept standard LC behind the panel, which is why it pairs naturally with LC building wiring.

AVP MFG & Supply builds SMPTE 304M break-out modules, HybridXE panels, opticalCON and LC fiber panels in-house and sells factory-direct. Planning a camera-fiber build? Send us the drawing — we'll spec the panels. Related guides: What is a WECO connector? · 3G vs 12G-SDI patch panels

Every video patchbay order asks you the same three questions: normalled or non-normalled? Terminated or non-terminated? And which jack format? Get them right and the patchbay disappears into your plant for a decade. Get them wrong and you'll be re-terminating coax on a ladder. Here's the working engineer's guide to each decision.

Normalled vs non-normalled

Normalling is the internal connection between a vertical pair of jacks. In a normalled pair, the signal on the top (source) jack flows automatically to the bottom (destination) jack whenever nothing is plugged in. Insert a patch cord and the normal breaks — you've manually re-routed the feed. Pull the cord and the default path returns.

• Normalled — the default for plant wiring. Your router output feeds its destination through the patchbay invisibly, and the bay only becomes a manual router when you need it: failure recovery, special events, temporary feeds. If you're unsure, this is almost certainly what you want.
• Non-normalled — no internal connection; every path must be patched with a cord. Choose this for patch-everything positions like QC benches, transmission racks where accidental normals are a risk, or anywhere the "default route" concept doesn't apply.

(Audio engineers will know half-normalling, where inserting in the top jack taps the signal without breaking it. Video patchbays generally use full normals instead and solve monitoring properly — see the monitoring row below.)

Terminated vs non-terminated

Video is a 75-ohm transmission line, and an unterminated path reflects. Terminated jacks present a 75-ohm load so that unused sources see a proper termination — the clean choice for return loss, especially at 3G/12G rates. Non-terminated versions exist for looping arrangements and cases where the downstream device provides termination. Plant practice: terminated unless you have a specific reason otherwise.

Monitoring row: the third row that pays for itself

A monitoring row adds a third row of jacks bridged onto the signal path, letting you probe any feed with a scope or monitor without interrupting the program. In master control, QC, and transmission areas it turns troubleshooting from a risky patch into a zero-downtime glance. AVP builds monitoring-row versions of the E-Series and MidSize mini-WECO lines.

Pick your jack format (density vs handling)

New to these formats? Start with What is a WECO connector? And whatever the format, match the bandwidth rating to your plant's SDI generation — a 3G-era bay will pass 12G-SDI badly. Full explanation: 3G vs 6G vs 12G-SDI: choosing a patch panel for 4K and 8K.

The 60-second spec checklist

1. Bandwidth: 12G-rated for any UHD plant; 3G Super HD+ where 1080p is the ceiling.
2. Format: MidSize mini-WECO unless you have a density (micro) or legacy (standard WECO) reason.
3. Normalling: normalled for plant wiring; non-normalled for patch-everything positions.
4. Termination: terminated, unless your design loops through.
5. Monitoring row: yes in MCR/QC/transmission; optional elsewhere.
6. Jack count & height: count today's feeds, add 20–30% spare, then round up to the panel size.

AVP MFG & Supply has manufactured broadcast video patchbays since 1985 — every configuration above (including normalled/non-normalled and terminated variants of most models) is built in-house and sold factory-direct. Not sure which spec fits your plant? Ask us — we'll spec it with you.

SDI keeps getting faster — and the patch panel is the easiest place to accidentally bottleneck a 4K plant. Here's a plain-English guide to the SDI generations, what they demand from a video patchbay, and how to pick the right panel format for HD, 4K, and 8K workflows.

The SDI generations at a glance

The practical jump for most facilities is 3G → 12G: one 12G-SDI coax replaces the four 3G links it used to take to move 4K60, which dramatically simplifies patching — if the passive infrastructure can carry it.

Why the patch panel's rating matters

A patchbay is a passive RF device in the middle of your signal path. At 12G-SDI the signal's fundamental sits near 6 GHz, so jack geometry, contact quality, and impedance discontinuities that were invisible at HD rates start costing you eye height and margin. A panel that was fine for 3G can pass a 12G signal badly enough to push a marginal run over the edge — and patchbay problems masquerade as "bad cable" mysteries. The fix is simple: for UHD plants, spec panels explicitly rated for 12G-SDI or better, with headroom. (AVP's E-Series panels, for example, are rated to 20 GHz — comfortable margin beyond 12G's requirements.)

Match the format to the job

• MidSize mini-WECO 12G — the workhorse for plant patching: 2x32 jacks per RU, classic WECO handling. See MidSize 12G patchbays.
• MicroSize 12G (micro/HD-BNC) — the density king for trucks and flypacks. See MicroSize 12G patchbays.
• E-Series (20 GHz) — maximum bandwidth headroom for 4K/8K-first builds, with monitoring-row options. See the E-Series panels.
• Still a 3G/HD plant? The Super HD+ 3G panels cover 1080p workflows at a friendlier price point — just don't expect to carry 12G through them later.

All of these live in AVP's UHD 4K/8K video patch panel family. New to WECO formats? Start with What is a WECO connector?

Three spec decisions that trip people up

1. Normalled vs. non-normalled: normalled panels pass signal automatically until a cord is inserted — the standard choice for plant wiring. Non-normalled suits patch-everything workflows. (Full guide: normalled vs non-normalled, explained.)
2. Terminated vs. non-terminated: terminated jacks present a 75-ohm load on unused paths; usually what you want for return-loss hygiene.
3. Monitoring row: a third row of jacks that lets you probe any signal without interrupting it — worth the extra RU in master control and QC positions.

Bottom line

Buy the bandwidth your plant is going to need, not what it needs today: the panel is the part of the chain you least want to re-terminate in three years. For most 2026 builds that means 12G-rated mini-WECO or micro panels, with E-Series where headroom matters most.

AVP MFG & Supply has built broadcast patch panels and connector hardware since 1985 — every panel above is manufactured by us and sold factory-direct. Unusual jack counts, frame sizes, or mixed layouts are our specialty: request a quote.

If you're speccing a video patchbay for a broadcast plant, truck, or master control room, you'll run into the term WECO almost immediately — usually with no explanation attached. Here's what it actually means, how WECO patching works, and how to choose between standard, MidSize (mini-WECO), and micro formats.

What "WECO" means

WECO is the de facto standard 75-ohm video patch jack and plug format used in professional broadcast patchbays. The name traces back to the Western Electric Company, whose early patch hardware set the pattern the industry standardized around. Today "WECO" simply describes the jack/plug geometry — a rugged, self-aligning coaxial connector designed for thousands of patch cycles — rather than any single manufacturer.

A WECO video patchbay puts two rows of these jacks on a rack panel. Sources terminate on the top row, destinations on the bottom, and a short 75-ohm patch cord lets an operator re-route any signal in seconds — no re-termination, no software.

Normalling: why patchbays "just work" with no cords

The magic of a broadcast patchbay is normalling. In a normalled jack pair, the source on the top jack flows automatically to the destination on the bottom jack whenever no patch cord is inserted. Insert a cord and the normal breaks, letting you re-route the feed. That means the patchbay sits invisibly in the signal path 99% of the time and becomes a manual router the moment you need it — during a failure, a special event, or maintenance.

Panels come in normalled and non-normalled configurations, and with terminated or non-terminated jacks depending on whether unused inputs should see a 75-ohm load. If you're unsure, normalled/terminated is the common choice for plant wiring — full decision guide: how to choose a video patchbay.

Standard WECO vs. MidSize (mini-WECO) vs. micro

• Standard WECO — the full-size format. Maximum ruggedness and the largest install base; a 1RU panel typically carries 2x24 jacks. See AVP's standard-size WECO video patchbays.
• MidSize / mini-WECO — the same concept scaled down, fitting 2x32 or 2x36 jacks in 1RU. This is the sweet spot for most modern plants: familiar WECO handling, significantly higher density. See the MidSize mini-WECO patchbays, including 12G-SDI UHD versions.
• Micro (HD-BNC style) — the highest density for space-critical builds like OB trucks and flypacks. See the MicroSize 12G patchbays.

Bandwidth: don't put a 12G signal through an SD-era panel

A patch jack is an RF component. As SDI rates climbed from SD through HD, 3G, and now 12G-SDI for 4K/8K, jack and panel designs had to keep pace — return loss and insertion loss at 6 GHz and above separate a modern panel from a legacy one. If your plant is moving to UHD, choose panels explicitly rated for 12G-SDI (AVP's UHD 4K/8K 12G+ patch panels cover mini-WECO, micro, and E-Series formats, with E-Series rated to 20 GHz). For a deeper dive, read our companion guide: 3G vs 6G vs 12G-SDI: choosing a video patch panel for 4K and 8K.

Quick chooser

• Legacy HD/3G plant, maximum durability: standard WECO.
• New build or refresh, best density-to-handling balance: MidSize mini-WECO (2x32/2x36 per RU).
• UHD/12G workflows: any format, but 12G-rated — mini-WECO 12G, MicroSize 12G, or E-Series.
• Trucks and flypacks where every RU counts: MicroSize.
• Confidence monitoring without breaking the path: choose a model with a monitoring row.

AVP MFG & Supply has manufactured broadcast patch panels and connector hardware since 1985. Every patchbay above is built by us and sold factory-direct — and if you need a configuration you don't see, ask us for a quote.