9/12/2023 0 Comments St fiber optic connector![]() ![]() ![]() Depending on choices made, cumulative connector interface signal losses could exceed the loss realized in the fiber cable itself! Keeping a Loss Budget Although fiber cable losses do escalate depending on the type and quality of fiber installed, each connection point imparts a definitive loss. In other cases, the choice of connectivity for most or all of the fiber distribution may rest with you. Perhaps the fiber transmission equipment itself will dictate connectivity. Ultimately, questions about the physical connection must be answered. Whereas copper connections rarely have a significant signal loss impact in AV applications, fiber connections do have measurable impact at each interface point within a distribution system. Unlike the steadfast, ubiquitous BNC connector used for copper coaxial wiring in AV, fiber connectors are evolving with the maturity of fiber technology. In this issue, we will look at the Subscriber Connector - SC, Straight Tip- ST, Fixed Connection - FC, and Lucent - LC fiber connectors, their application, performance, and their termination requirements. In the last issue of Technically Speaking, I presented the basic characteristics and considerations for the fiber conductor. Which equipment transmission format should be used: analog or digital? Is digital transmission hardware available? Does this application require multimode or singlemode fiber? How do I deal with the customer's existing installed fiber? What fiber connectors do I use? Figure 1: ST style connectors - booted black tip pictured above and unbooted below. The fiber transmission solution is still a serious investment consideration requiring careful planning and implementation. A fiber solution may sound like a great idea for those challenging long-haul or highly secure applications, and then reality sets in. Optical fiber transmission of AV signals has come of age and it's time to take another step along this new, adventurous road. Q: Where are these cable assemblies made? Our cable assemblies are made in our factory, located at our headquarters in Orange, California.By Steve Somers, Vice President of Engineering *Cables assemblies under 100′ in length will ship without a spool to reduce packaging. The cables are delivered via FedEx or UPS, or if you contact us we can ship via your shipping provider. Q: How will the cable be shipped? Our cables are shipped on a cable spool* with both ends secured for safe transport. The cable you order will likely be one of these brands: Corning, Prysmian, AFL, or Superior Essex. Q: What brand cable will I get? We stock of our fiber cables only from name brand manufactures, we may rotate stock from manufacturer to manufacture as lead times vary significantly when it comes time for us to replenish our own inventory. These numbers correlate with the TIA color coding standard, as underneath the protective tubing each fiber is color coded: Fiber Number ![]() These labels will have the fiber # printed on it. Q: How are the fibers identified? Each of the cable assembly ends will have a protective tubing added and the tubing will be color coded to the fiber type:Ī label is then affixed to each individual fiber strand. *Cable breakout lengths will vary slightly on the pulling sheath end as they may be staggered for higher strand count cables. Q: What is the breakout length? The breakout length is the following: The breakout lengths vary based on strand count and can be found in the cables specification section. This portion of the length will have the heavy jacketing on the cable. The cable length is the value selected when ordering and is charged by foot. Q: What will the over all length of my cable be? To calculate the over all cable length you will need to add: Cable Length + Side 1 Breakout Length + Side 2 Breakout length. See our Pulling Sheath info graphic for additional information. For cable assemblies with higher strand count cables the connectors will be staggered in length to allow for the smallest possible diameter. The cable end with the pulling sheaths is meant to be run through the conduit, your pulling string should be affixed to the loop at the end of the pulling sheath. Conduits with existing cables will have mixed results. A larger size conduit can typically handle longer runs, a conduit path with less bends will typically be an easier pull. Our recommendation is a general guideline as conduit pulls are very specific to the conduit path. We have listed the minimum size conduit size each cable will fit into. Q: What size conduit will this cable fit through? Each cable will have a different diameter and the pulling sheaths will have a minimum recommended conduit size. ![]()
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