grounding bracelet

to a building, improper use of protective layer materials in the cabling system will pose a great risk to the safety of the building. Structured Cabling uses a variety of plastic materials, and the combustion value is very high. When the temperature is too high, it is easy to cause fire. In order to reduce the damage and harm to people in case of fire, the cables with high fire prevention standards should be selected as much as possible during the implementation of wiring. For polyvinyl chlorid

zone shall comply with the following provisions. ① At least one v ac power outlet should be configured in each work zone, and its installation position should be convenient for use. ② Single-phase power outlet with protective grounding should be selected for power sockets in the work zone, and the protection grounding should be strictly separated from the zero line. Integrated Wiring telecommunications roo

the cause, pcblayout both in the entire PCB board wiring is done well, but due to the power, grounding the consideration of the interference caused by, will make the performance of the product decline, Sometimes it even affects the success rate of the product. Therefore, the wiring of electricity, grounding wire to be taken seriously, the electricity, ground noise caused by the interference to a minimum to

Board design process is a complex and simple process, want to master it well, but also need the vast number of electronic engineering designers to experience, in order to get the true meaning.1 handling of power and groundEven in the entire PCB board wiring completed is very good, but due to the power, grounding the consideration of the interference caused by bad, will make the performance of the product decline, and sometimes even affect the success

same network segment, and the route must be on a different network segment. 6. Broadcast interference The above two terminals connected by bridging equipment connect each other with a set of application software for sending information by radio. When they are running at the same time, both sides of the server will issue an alert: the incomplete package received. This alarm disappears after a set of application software is transferred to another network segment. This is because the broadcast o

, wire metal parts are not exposed to other accessories and chassis, there will be replaced immediately. or the direct selection of nylon nets wrapped wire, which can also play a better insulating effect. In the daily life we should pay attention to the computer wiring harness and power cord of the correct binding solution, to develop a love clean habit, not a lot of wire, cigarette butts everywhere. 　　Written at the end: 1, for the general problem is not serious leakage, friends can

of two pairs of twisted-pair, arranged in 1, 2, 3, 6 position, if the use is not two pairs of lines, but the original pair used by the line used separately, will form a string around, resulting in a larger crosstalk (NEXT). Has a great impact on network performance. 10M network Environment This situation is not obvious, 100M network environment if the flow of large or long distance, the network will not be able to unicom. strictly enforce grounding

sharp decline in service life, and the old equipment quite simple suffered a breakthrough, seriously affecting the stability of the network capacity. The Lightning protection method of network equipment is to do well the grounding device of equipment and to install an effective lightning protective system. The 1th step is to do the security of network equipment grounding, but also to use wireless AP as a

water pipelines, the machine room above or next door can not exist water pipes L The best room without windows, at the same time the computer room without large interference source (air-conditioning host, transformers, launch towers, high-voltage transmission lines, etc.) L The location of the machine room is far away from the Yang Ash area and the surroundings cannot damp L no vibration source around the machine room (railway, large freight road, mine, etc.) 4. load-bearing L CALCULATE the ba

not two pairs of lines, but the original pair used by the line used separately, will form a string around, resulting in a larger crosstalk (NEXT). Has a great impact on network performance. 10M network Environment This situation is not obvious, 100M network environment if the flow of large or long distance, the network will not be able to unicom. 　　 　　 strictly implement grounding requirements Because in the LAN, the transmission is some weak s

PCB Cabling 6 Major principles1 power, ground processing not only in the entire PCB board in the wiring is done well, but due to the power, grounding the consideration of the interference caused by, will make the performance of the product decline, and sometimes even affect the success rate of the product. Therefore, the wiring of electricity, grounding wire to be taken seriously, the electricity, ground no

probability of failure of network devices such as vpn routers. In order to reduce the probability of a vpn Router failure, the author provides the following suggestions. First, pay attention to the management of the vpn Router power supply. In fact, not only vpn routers, including other network devices, must use power supplies with effective grounding. For example, the power supply of the vpn Router and other network equipment used by the author is e

first step of the test is run, the devices in the Internet cafes are opened in batches, and the full load power of Internet cafes is gradually achieved. It is best to run the whole load for more than 24 hours, so as to test the real performance of the Power wiring system. During full load operation, if the air switch is automatically tripped or the fuse is burned out, check the cause carefully. 3. overload operation in Internet cafes: after full load operation, you can perform overload operatio

[Byeyear email:[email protected] Reprint please keep this trip]1. Static reactance DisturbanceIdeally, our system is a hollow and airtight metal box, according to the theory of electromagnetic field, the outside of any static power supply can not affect the inside of the box circuit operation. However, such a system is of little practical significance. An actual system must include an external interface (i.e., it is impossible to seal). An actual (metal-cased) system should be able to put the el

boards, power cords and ground wires are the most important. The main method to overcome electromagnetic interference is grounding.For the dual panel, the ground line layout is particularly exquisite. By using the single point grounding method, the power supply and ground are connected from both ends of the power supply to the printed circuit board. The power supply is one point, one point. On the printed circuit board, there must be multiple return

Pay attention to the following basic items for the current loop: 1. If you use strip, try to bold it. If the Grounding Connection on the PCB is to be considered, the design should be as rough as possible. This is a good rule of thumb, but you must know that the minimum width of the ground wire is the valid width from this point to the end. Here the "end" refers to the farthest point from the power connection end. 2. Ground loop should be avoided

network equipment faults are directly related to lightning strikes. Although the induction voltage caused by lightning strikes often cannot be completely reimbursed once by the enterprise router, even if it did not cause a network failure at that time, if the enterprise router is frequently affected by the overvoltage, this will easily lead to the aging of router equipment parts, greatly reducing the service life of the old enterprise router is more vulnerable to damage. In this case, if there

downloaded the Ethernet 500 dial-up software from the Internet. After the software is installed, there are still irregular disconnection failures. Dedicated grounding socket Since it is not a problem with operating system and software settings, is it a problem of compatibility between the NIC and broadband Modem? Open the chassis, prepare to replace a nic, and accidentally find that there is a lot of static electricity on the

radiation coupling. Transmission must have a complete circuit connection between the interference source and the sensor. Interference signals are transmitted along the connection circuit to the sensor. This transmission circuit can include the power supply, public impedance, grounding flat, resistance, inductance, capacitance and mutual inductance of wires, conductive components of the equipment. Radiation transmission is carried out in the form of e

This is a creation in Article, where the information may have evolved or changed. ID ( Identification ) role Identification pin two x USB when the device interconnects, how to make two devices know: Who is the master control? Who is peripheral"periphery"? This actually uses the new PIN, which is appended with the fifth pin in the traditional 4-pin USB interface:ID to be the master of mutual vaccinationUSBdevice, it willIDpin-bit grounding (GND),The