The cable is routed at a right Angle, and the wireless device within the right Angle is affected, which may cause the wireless device to not work properly. Reason: Fiber optic cables can't run at right angles. Because the optical cable is mainly glass fiber, once the bending reaches 90 degrees, it is easy to break, and it can not normally transmit signals. thereforeCable laying must have curvature.
Now the small optical cable is generally used G657A optical fiber, right Angle into the user's home can be, but not too straight, or give him a little space is better. The reserved diameter of the front part of the optical cable must be greater than 25 times the diameter of the optical cable. Do what you think is best on the spot.
The reason is that, one is that when the cable is deployed by the mesh sleeve method, the traction speed is not well controlled, and the cable appears to hit the back buckle and surge; The second is that when the cable is worn, there is no anti-plastic tube, and the cable is bruised; The third is the damage of the outer protective layer of the optical cable caused by other reasonsWater, resulting in hydrogen loss. ⑥ The pigtails and fiber jumpers in the equipment room and devices are not properly bundled or coiled, and cross-wound occurs, causing loss.
1, the current notebook network cable interface is RJ45 interface network cable. RJ45 Plug, also known as RJ45 Modular Plug, is used for terminating data cables to realize the connection and change of equipment and distribution frame modulesEven more. The RJ45 crystal head is required to have good conduction performance; The gold-plated thickness of the contact three-fork reed is 50μm, which meets the super 5 transmission standards and conforms to the line sequence of T568A and T568B; It has the functions of preventing loosening, plugging, self-locking, etc.
2, whether the laptop can be plugged into the network cable should be determined according to the specific situation of the laptop. Generally thick laptop computer is a network cable interface, find a finished network cable, one end of the network cable is a crystal head, that is, rj45 connector, the network cable can be gently inserted into the network port. But there are some thin books are not available, you need to use an adapterTo connect the cable.
3, the current notebook network cable interface is RJ45 interface network cable. RJ45 plug, also known as RJ45 modular plug, is used for terminating data cables and connecting and replacing equipment and distribution frame modules. RJ45 crystal head requires good electrical conductivity; The gold-plated thickness of the three-fork reed of the contact is 50μm, which meets the 5-level transmission standard and the line sequence of t568a and t568b; It has the function of anti-loosening, blocking and self-locking. The RJ45 plug is a standard connector in copper cable wiring.
1, the general lighting circuit inside the two wires, one is called the fire line and the other is called the zero line. The difference between a live line and a zero line is that they have different voltages to the ground. The line usually represented by red is the fire line. And the line that disappears in blue is the zero line. The common yellow and green lines are represented as ground lines.
2, red line: usually represents the positive or DC power supply wire. In a circuit, the red wire is generally used to transmit a positive voltage signal, such as the positive terminal of a battery. Black wire: Usually represents a negative or ground wire. In the circuit, the black lineIt is generally used to transmit negative voltage signals or connect to the ground wire to ensure the safe operation of the circuit. Blue wire: Usually represents a neutral or neutral wire wire.
3, the red, yellow, black, green, blue of the wire represents the meaning: red is the fire line. Yellow or yellow and white are ground lines. Black is the ground cable. The yellow-green two-color wire gauge is the PGND cable. Blue is the zero line. A wire is a wire that transmits electrical energy. Divided bare wire, electromagnetic wire and insulated wire. Bare wire has no insulation layer, including copper, aluminum flat wire, overhead stranded wire and various profiles (such as profile wire, bus bar, copper bar, aluminum bar, etc.).
4, inIn wires, red usually represents the live line, while black represents the neutral line. There are eight colors of the wire, including red, yellow, blue, green, double, black, white and brown. In home circuits, red, yellow, and green are usually used as firelines, blue as neutral lines, two-color lines as ground lines, and black, white, and brown as backup lines.
5, according to the national safety wiring standards, the red wire represents the phase line, the black wire represents the zero line. The red line in the wire represents the fire line, and the black and white lines represent the replacement line. Firewire is a wire in the lighting circuit, its voltage to the ground is 220V, if the firewire and the neutral line once touch