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Black Box Explains... Fan-out kits.
Product Data Sheets (pdf)...RJ-11, RJ-45, and MMJ Crimp Tool
Furcating is the process of adding protective tubing to each fiber within a loose-tube cable. It can be a headache-inducing task if you dont have the right tools. If you... more/see it nowbend the cable or buffer tubes past their recommended bend radius, or if you allow them to kink, youll end up with substandard cable connections and splices that can break down over time. And, if the cable is outdoors, it can become exposed to the elements. The end result: a damaged cable without optimal transmission performance.
Thats why a fan-out kit is an absolute must during furcation. These kits enable you to branch out the fragile fiber strands from a buffer tube into protective tubing so you can add a connector. And, you can do it without using splicing hardware, trays, and pigtails.
To separate the fibers, use the kits fan-out assembly, which is color-coded to match the fiber color scheme. The assembly protects the cables bend radius. It also eliminates excessive strain on the fibers by isolating them from tensile forces.
Several types of fan-out kits are available for both indoor and outdoor cross-connects. The outdoor kits include components that compensate for wider temperature fluctuations. Some kits are used to terminate loose-tube cables with 6 or 12 fibers per buffer tube. Others enable you to furcate and terminate more than 200 loose-tube cable fibers, sealing the cable sheath and providing a moisture barrier at the point of termination. These kits require no additional hardware.
Although its recommended that you terminate loose-tube cable at a patch panel, that might not always be possible. For this, there are spider type fan-out kits, which affix a stronger tubing to the bare fiber. The tubing is typically multilayered, consisting of a FEP inner tube that holds the individual fiber, an aramid yarn strength member, and an outer protective PVC jacket. Once you strip back the cable jacket, you thread the fibers into the fan-out inserts. collapse
Black Box Explains…Terminating fiber.
Terminating fiber cable used to be a job for experts only. But today, prepolished connectors make it possible for anyone to terminate multimode fiber—all you need is a bit of... more/see it nowpatience and the right tools. Here’s how to terminate fiber with ST connectors:
Step 1 — Slide the connector strain-relief boot, small end first, onto the cable.
Step 2 — Using a template, mark the jacket dimensions to be stripped (40 mm and 52 mm from the end).
Step 3 — Remove the outer jacket from the cable end to the 40 mm mark. Cut the exposed Kevlar. Carefully remove the jacket to the 52-mm mark, exposing the remaining length of Kevlar.
Step 4 — Fan out the Kevlar fibers and slide the crimp ring of the connector approximately 5 mm over the fibers to hold them out of the way. Mark the fiber buffer 11 mm from the end of the cable jacket. Also, mark the buffer where it meets the jacket.
Step 5 — Bit by bit, strip off the buffering until you reach the 11-mm mark. Check the mark you made on the buffer at the jacket. If it’s moved, carefully work the buffer back into the jacket to its original position.
Step 6 — Clean the glass fiber with an alcohol wipe. Cleave the fiber to an 8-mm length.
Step 7 — Carefully insert the fiber into the connector until you feel it bottom out and a bow forms between the connector and the clamp. Cam the connector with the appropriate tool.
Step 8 — Crimp the connector.
Step 9 — Slide the crimp ring up the jacket away from the connector, releasing the Kevlar fibers. Fan the fiber so they encircle the buffer. The ends of the fibers should just touch the rear of the connector—if they’re too long, trim them now.
Step 10 — Crimp the connector again.
Step 11 — Slide the strain-relief boot over the rear of the connector. You might want to put a bead of 411 Loctite adhesive for extra strength on the rear of the boot where it meets the jacket.
Although the details may vary slightly with different connectors and termination kits, the basic termination procedure is the same. collapse