Broadcast Camera in venues – TAC Fiber

Editor’s Note: This is part two of a three part series.

TAC fiber drumAs said in my previous blog broadcast cameras operate on either hybrid fiber (SMPTE311) or triax cables. The professional broadcast market has started to standardize on HD for studio production and on 3G for sports events. 3D is pioneered in some movies and international sports events (e.g. Olympics and Football Worldcup) and will create another era of broadcasting. Keep that in mind camera teams have the need to deliver all formats with no downtime – easy to handle and highest quality products are needed. On the other side the new fiber cabling infrastructure will add cost compared to the traditional use of triax cabling infrastructure.  To solve this problem, Belden has especially designed products which help to lower total cost of ownership and reduce service and maintenance costs.

Telecast

Belden’s Telecast product range of active components allows cameras to be used with low cost single mode fiber cables instead of SMPTE311 hybrid fiber camera cables and helps to reach a longer distance, if needed. Below pictures demonstrate a locally powered camera (Telecast SHED) and a remotely powered camera (HDX/SHED) cabling infrastructure:

  

 Active remoely powered Camera

The active components from Telecast use on one side the SMPTE304 devise to connect the SMPTE311 camera cable and on the other side they have STs, SCs, MX™, or Neutrik’s OpticalCon™ device to connect the single-mode fiber cable.

 Belden

We recommend for rugged applications such as venues and live events our TAC Fiber cable, because it stands up better to abuse, extreme temperatures, and vehicle traffic then any standard single-mode fiber cable. Our TAC fiber cable is available with up to 12 fibers – by the way, the main use is with 4 fibers. It features extremely strong, rugged, and survivable tight-buffered single-mode fibers meeting the ITU G.657A standard. It has no messy gel to clean for termination or splicing. These tight-buffered fibers feature an aramid yarn strength member which is Core-Bonded™ to exceptionally tough, sun-light and chemical resistant polyurethane (PUR). The round outer jacket (low memory effect), makes them highly resistant to abrasion, crushing and cut through. The ITU G.657A fiber design delivers a bend-insensitive fiber to enable much smaller fiber management.

I have seen over the last years several TAC fiber installations and each were terminated with different connectors. If a customer has enough budget and needs a very robust and easy to clean connector they go with extended beam connectors (e.g. MX™ from Telecast), ST or LC compatible metal housing connectors (threaded or push-pull) available for example from Lemo, Fischer, Rosenberger or Neutrik’s OpticalCon™. Robust metal drums are used for transporting.

If you need more details about our solutions let me know and Email me at werner.eich@belden.com

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