What to identify the wire is good or bad
. see to see the packaging, the national standard of the wires are often done better, neat, hand up to have a sense of quality. . to open the packaging to see inside the wire, the GB of the wire 1.5 - 6 square wire requirements is thick skin (insulation thickness) is 0.7mm, too thick is the non-standard, and the corresponding core of his sure Not enough, you can pull the line of force, not easy to tear is the general is the national standard. . with the fire about 5s away from the extinguished, there is a certain flame-retardant function for the national standard line. . see the core, the core of the material (copper) the higher the brightness of copper the better, and the light uniform, shiny, no sense of hierarchy. GB requires the core must use oxygen-free copper. Non-standard, such as black rod copper, there may be hidden dangers. . the core of the thickness of the country have certain requirements, but not very strict. But not wrong a lot, but a little bit small, generally do not see the error with the eyes. . the length of the country must not be forced to play rice, but there are many manufacturers also played rice, playing rice is not necessarily the national standard, but the general national standard generally did not play rice. Non-standard playing rice that is just a means. . the state must have a certain mark on the wire, the maximum will not exceed 500mm will have the same logo to play the next, the general product of the trademark, the manufacturer name, the implementation of standards.
Mainly used in the engine room or network management center. A network device for connecting an external optical fiber to each port of a fiber optic device and various optical interfaces.
Optical fiber patch panel ODF fiber optic patch panel OMDF literally can understand that the two are largely consistent, all belong to the wiring connection equipment. Are used to connect fiber optic cable and communication equipment. The difference is that, in the definition of OMDF, the line side connects the outdoor cable, the equipment side connects the OLT or the transmission equipment, may through the jumper adjusts the line order, simultaneously has the openness. The ODF is connected to the optical cable or optical communication equipment, the line order is generally fixed, only one side can jumper. Fiber optic cable and other related equipment, it is best to meet the quality of high quality, where we use Fenite.
Mainly has the following three functional cables into the rack, the optical fiber grouping and protection, its outer sheath and strengthen the core to play a mechanical fixed role; for the various cross-linked cable between the optical cable to provide storage They can be neatly placed in a regular manner; the connector on the cable connector is plugged into the adapter, and the optical connector on the other side of the adapter is docked, and the adapter and connector can be easily inserted and removed, and the optical path can be freely configured and tested Faster fiber products are also good, you can see
