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Agilestar Dwdm

January 17th, 2010

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How to select and fiber optical cable products

To view the qualifications and business background of the manufacturer. Large manufacturers to see if the big brands, commitment to product development and production of fiber optic cable, whether there are many successful cases, whether you have the ISO9001 quality system certification, the ISO4OO1 international environment system certification, whether or not to comply with ROHS directive, and whether there is relevant national and international institutions certification. Such as the Ministry of Information Industry, Theil, UL certification.

Second, view the product packaging. Standard plate of fiber optic cable supplier, is generally 1km, 2km, 3km, 4km and custom lengths,
SFP Cable
allowing positive and negative deviations, the deviation range can refer to the manufacturers factory standards. View the cable sheath, and a clear sign of m number, name, cable type, etc.. In general, the factory fiber optic cable around in a sturdy wooden tray and protect the wood seal plate, fiber optic cable at both ends sealed, fiber optic disc following signs: product name, specifications, plate number, length, net / gross weight, date, A / B-side signs, etc.; view the fiber optic cable test records, the normal two, a side in the wooden tray with the cable tray, open the wooden disk fiber optic cable can be seen, one outside in the wooden tray.

Third, view the cable jacket. Indoor cable jacket generally use poly green vinyl or flame-retardant poly green ethylene or low smoke zero halogen materials. Smooth and bright, high quality appearance and feel good. Has good flexibility, easy to peel. Poor quality of the cable jacket finish is not good, when stripped, easy to skin and inside the sleeve, Kevlar adhesion, but also note that some products using the sponge instead of aramid materials. Quality black polyethylene outdoor PE sheath of the cable should be used, into the cable skin smooth, bright, uniform thickness, small bubbles. The poor feel of the poor quality of the cable jacket, outer skin is not smooth, even in the presence of the bubble particles, some marking to be rubbed. Due to reasons of raw materials, some cable jacket dense degree of moisture is easy to penetrate.

View to strengthen the wire.
sfp+ cable
Outdoor cable a lot of structure, generally contain strengthen the wire. In accordance with the technical requirements and production requirements, outdoor fiber optic cable in the wire to the phosphate treatment, the surface was gray, hydrogen loss does not increase as cable, no rust, high strength. However, some fiber optic cable wire aluminum wire or even instead of the metal exterior is white, poor bending performance. Also can use some simple ways to identify, such as fiber optic cable split open one day taking a dip in the water, come up with to compare, immediately betrays itself. The saying goes: True gold fears no fire to burn. I have to say in the sub-phosphorus steel are not afraid of the water to soak ".

View the vertical bandage pattern steel armor strip. Formal manufacturers generally use double-sided brushing longitudinal dressing pattern of the anti-rust paint strip and ring package joints, relatively strong and rigorous. But we also found that some fiber optic cable on the market as the armor with ordinary metal, usually only one side for the rust treatment, see the strip thickness of the longitudinal dressing pattern apparent inconsistency.

, View the loose tube. Regular manufacturers generally to the system to do put in the fiber core loose tube PBT material, this material is characterized by high strength, no deformation, and aging. Some products using PVC material loose tube, this material disadvantage is that the intensity difference, pinch flat, easy to aging. Especially GYXTW structure of the fiber optic cable, open cable cut open the cable jacket, the pulling force, loose tube PVC material will deform, and even some with armored skin off, and even the fiber core pull off.

To view the cream of the fiber. Outdoor fiber optic cable, fiber cream filling on the loose tube inside to prevent water directly contact with the fiber core. To know that once the water vapor and moisture into the fiber of life will be seriously hampered. Relevant national regulations have specific requirements on the fiber optic cable water blocking. In order to reduce costs, some fiber optic cable using the cable cream. So be sure to check the fiber cream is full.

Eight view aramid. Kevlar, also known as armor Vladimir, is a high strength chemical fiber, can effectively prevent external forces, and has played a very good protection. Only a few companies in the world capable of producing such products, not cheap. As many large manufacturer of fiber optic cable will aramid yarn strength member, of
fiber optic cables
course, aramid cost is relatively high, so some indoor fiber optic cable diameter will be made very thin in order to reduce the use of Kevlar, or simply use the domestic sea cotton instead of Kevlar. This product looks very like Kevlar, so call this "domestic aramid. However, fire rating and tensile properties of this product has not yet reached less than regular Kevlar technical indicators, wear tube construction, the tensile strength of such fiber optic cable is a challenge. "Domestic aramid flame retardant in a fire that melts, but the formal aramid flame retardant product with high toughness.

Nine, the fiber core. The fiber core is really a cable core part of the interview on the points in order to protect the core of this transmission. It is also one without the help of the instrument part of the most difficult to identify. Both can not be identified with the eyes it is a single-mode or multimode; can identify 50/125 or 62.5/125; you can not identify it OM1, the OM2, the OM3 or zero water peak, not to say that it's Gigabit, The trillion application. Best to suggest that the use of high-quality core of regular cable manufacturer. Indeed, some small plants because of their lack of the necessary testing equipment, not the fiber core, a rigorous inspection. As a user, you even do not have to
SFP Cable
take the risk to buy. Construction applications often touch often to the problem, such as insufficient bandwidth, the transmission distance can not get the calibration value, uneven thickness of the weld when the good is not easy docking, fiber to the lack of flexibility, easily broken plate fiber number and the quality of the fiber core.

More than talk about the basic means and methods of identification of a number of cable products are some of the voice of experience. In short I hope the majority of fiber optic products, users can correct understanding of the optical fiber and cable products, check the cable manufactured products information, pay attention to check the structure and materials, the use of appropriate means of identification, rational understanding of the fiber optic cable price and performance quality to do the class of a fiber optic cable product of rational consumers.

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