Product parameters:

• Brand: RECM
• Type: Crystal head jacket
• Technology: injection molding/injection
• Application: mainly used for both ends of the network cable plug protective cover

Product introduction

Product name: Crystal head jacket (grey, blue, yellow)

Product specifications: 1000/Pack

Units of measurement:

This jacket made of soft plastic, can effectively protect your network connection;

Crystal head for the network; Protection Crystal head with shrapnel.

Packed 1000/Pack, 0.05 Yuan for a single price, the cost price for the lowest wholesale prices without bargaining!

Color as shown above, 1000 the following colors is not selected, the default random!

Flagship store of the company recommends similar goods:

Name: six Crystal shield 8-core network

High quality 6 Crystal head, Gigabit Crystal head!!

On twisted pairs of color and arrangement is to have a unified international standards strictly defined, now commonly used is TIA/EIA568B should be used when the following order (sorted in the horizontal direction from left to right, beneath the Crystal head button end Super): (TIA/EIA568B)

1-﹥ white Orange 2-﹥ Orange 3-﹥ white green 4-﹥ blue 5-﹥ white/blue

6-﹥Green 7-﹥ white Brown 8-﹥ Brown

Provide the best conductivity and high quality cable, with no data loss !

(The wire tips)

568A standard: white and green, green, white, Orange, blue, white, blue, Orange, white and Brown, Brown
The 568B standard: white-Orange, Orange, white and green, blue, white, blue, green, white, Brown, Brown

You can notice that both approaches is the difference between Orange and green switch.

Main line: the 568B standard on both ends of the line (usually)
Reverse line: 568B at the line end and the other end produced according to 568A standard

Cable has two approaches, one is crossing lines, one is parallel

Cross-line approach is:

Using 568A standards, using 568B standard
Parallel approach is to:

With standard 568A or 568B standards at both ends (usually used 568B parallel approach)

If the status is not equal on both sides of the connection, use parallel lines, such as the computer connected to the router or switch
If two devices are connected are equal, then use a crossover cable, such as the PC is connected to the computer.

• What are line, what with anti-line?

PC-PC:----------back line (common)
PC-HUB:---------line (used)
PC-SWITCH:--------line (used)
PC-ROUTER:--------line (used)
HUB-HUB General:------back lines
HUB-HUB cascade-cascade:-the anti-line
HUB-HUB General-cascading:-main line
HUB-SWITCH:--------back lines
HUB (cascading)-SWITCH:---main line
SWITCH-SWITCH:------back lines
SWITCH-ROUTER:------line (used)
ROUTER-ROUTER:------back lines

Production steps are as follows:

Step 1: using wrong oblique cut the twisted-pair cable length required at least 0.6 metres, up to 100 meters. And twisted-pair wire (actually any cut can be) double

Outer skin removed 2-3 cm strand. Some twisted-pair cable with a soft nylon rope, when you strip twisted skin, think the naked part is too short, and not conducive to business

RJ-45 connector, you can grip twisted skin, then hold the nylon line to peel beneath the skin, bare lines can get long.

Step 2: Strip after the completion of the twisted-pair cable.

Step 3: the next step is to line operations. The bare, twisted in the orange line to their front, Brown on the line in his direction, and peel the green line to the left, the blue

On the Peel line to the right. Top: Orange left: Green: the Palm right: Blue

Step 4: the green line and the blue line in the Middle, and the orange line and Brown line intact, is placed in the outer position.

From left: Orange, second from left: Green Left: blue left: Brown
Step 5: carefully Peel each pair of lines, because we are following EIA/TIA 568B standards to make joints, line color so there is a certain order.

Require special attention is that green line should cross the blue line. Here is the most error-prone places, white and green wire together with the adjacent to the green line, this will result in crosstalk, transmission efficiency

Rate. From left: white/Orange Orange white/green/blue/Bai Lan/white brown/green brown/common error method is the location of the green line in the 4th foot.

Green line should be placed in the 6th foot position is correct, because 100BaseT network, 3rd foot and the 6th foot is the same, so you need to use the same residue. (See standard

EIA/TIA 568B) from left to right: white/Orange Orange White/Green/Green/Bai Lan/blue/brown white/Brown
Step 6: naked twisted scissors, pliers or diagonal cut only about 14mm length, reason for leaving this length is to comply with EIA/TIA standards, you can refer to the relevant

RJ-45 connector and the twisted standard presentation. Then each line of a twisted turn into a RJ-45 connector pin, first pin should be placed in white and orange line, the other analogy

Step 7: determine each thread twisted after they have been placed correctly, you can use RJ-45 crimping tools crimping RJ-45 connectors, picture on the right side there is also a RJ-45 connector cover on the market,

Prevents joints pulling caused by poor contact. When this protective cover is used, you need to press RJ-45 this sleeve before inserting in the twisted-pair cable.

Step 8 repeat step 2 through step 7, then the other end of the RJ-45 connector. Because the direct connection between the hub and the station was so RJ-45 connector at the other end of the PIN method

Sample. upon completion of the RJ-45 connectors at the ends of a connector pin and completely ~ color samples, this connection method is applicable to the connection between the ADSL MODEM and network card, the computer hub

(Switch) between connections. Complete the RJ45 connector.

Crossover cable connectivity for ADSL MODEM and hub HUB (affiliated with the MODEM design, not all), between the HUB and the HUB is not cascade port through the connection, as well as two computers

Directly through a network adapter connected. Production method is basically the same as above, not only online ordering as a 568B, 1-3,2-6 Exchange mode is used, which is a used 568B, another

Using 568A.

Network cabling knowledge-new-

Knowledge: the type of cable used in smart home

Smart home wiring system on the functions, it is the Foundation of smart home systems, is the transmission channel. Come here let us know in the smart home cabling types and frequently asked questions.

Smart home cable types

1, twisted (twisted-pair). Twisted-pair cable is now the most common transmission medium, it is made up of two insulated copper wires, typically 1 mm in diameter. Two wires twisted together in order to prevent its induction in the adjacent line to interfere with signals. Existing twisted-pair cables typically contains 4 twisted pairs, specific for the triple sec/Orange, white/blue, green and white/green, white/Brown Brown. common twisted-packing-packing-box and shaft, length of 305 metres (1000 feet). Sales in the domestic market the most cartons for a 305-meter cable length Super five twisted-pair cable.

2, RJ45 modules (modular). There are four common basic module socket, 8-core module sockets are often called 'rj45', 6-core module sockets are often called 'rj11'. Sometimes, the 'rj' equipment is easy and something called USOC (universalserviceorderingcodes) things.

'Rj' mean ' registered Sockets ' (registeredjack), each of the basic socket can be connected in different tectonic RJ. For example, a 6-core socket can connect the RJ11 (1 pair), RJ14 (2 pairs) or rj25c (3), a 8-core socket can connect rj61c (4) and rj48c. 8-cell (keyed) can connect rj45s, rj46s and rj47s. Fourth module socket is a changed version of the 6-cell (modifiedmodularjack,MMJ), which was designed by Dec for speech device connected Dec. Integrated module is used to end the wiring cables in the wiring and connected with a jumper effectively. Export location in the information panel patch panels or used modules in the CHC.

3, distribution frame (pantchpannel). MDF has a diversity and economic and practical features, can be used for both vertical and horizontal cabling, or direct connect hubs and horizontal cabling system. With 12, 24 and 48 port available. Wiring Terminal to 110idc, both before and after the tag, easy to identify. Products are designed for 19-inch rack installation. Standard 19-inch rack-mounted patch panels are usually commercial wiring, residential wiring with six smaller units, space saving, easy to install, low cost. And can be installed in small in the CHC.

4 and Crystal head. Specification structured cabling design and installation of the accessories are not included in, it will form part of a jumper made into finished products, residential wiring may occur when the original jumper does not meet the length requirement, users may buy Crystal head and cable, using special crimping tools for production.

5, Panel. This is a wide range of accessories, household power supply, home appliances are also widely used. When routing information export position of the Panel fixing modules, often with 86 domestic standard bottom box. -Port and dual-port two. Common wiring panels of the main exports of computer and telephone information, and multimedia information panels and even has a computer, telephone, CATV, audio interface.

6, jumper (connector). Also known as a network cable. Copper in wiring jumper is a short twisted pair crimp both ends well Crystal head, used to complete the module, patch panels, active connections between devices, jumper the common length of 1 m, 2 m, 3 m, 5 m, 10 m. Residential wiring recommended with the original jumper, jumper because the original process rigorous, can withstand repeated plugging and unplugging many times.

7, fiber. Optical fiber is a subtle and flexible medium beam, the Center is light glass core. Fiber optic cable consists of a bundle of optical fibers, also known as cable. Cable transmission is the most effective way of transmission media, it has wideband electromagnetic good insulation properties, advantages such as less attenuation. Cables are commonly used: 8.3 μ m cores, 125 μ m outer layer, single mode fiber optic cable, 62.5 µ m cores, 125 μ m outer, multimode fiber optic cable, 50 μ m cores, 125 μ m outer, multimode fiber optic cable, 100 μ m core, 140 μ m outer, multimode fiber optic cable.

Network cabling knowledge-new-

Six and five cable what is the difference? Test data-what's the difference?

' Super five ' refers to the five categories of unshielded twisted pair (UTP-Unshielded Twisted Pair)
Unshielded twisted-pair cable is made of twisted and a plastic jacket form. Five classes are the international electrical industry association for twisted-pair cables defined five different quality levels.

Super five categories of unshielded twisted-pair cable is in the existing five categories of unshielded twisted pair cables made after this part of the performance improvement, performance parameters, such as the near-end crosstalk, attenuation crosstalk ratio, the return loss is increased, but the bandwidth is 100MHz.

Super five twisted around 4 and 1 cable resistance, wire colors identical to the five categories of twisted pair, respectively, white Orange, Orange, white and green, green, white, blue, blue, white, Brown and Brown. 0.51mm bare copper wire size (AWG 24AWG), insulated wire diameter 0.92mm, UTP cable diameter is 5mm.

Although over five categories of unshielded twisted-pair cable will provide bandwidth up to 1000Mb/s, but often expensive special equipment needed to support it. Therefore, usually only apply to 100Mb/s Fast Ethernet, desktop switch connection to a computer. If you are not preparing to upgrade networks to Gigabit Ethernet, so might as well in the horizontal cabling in the use of five categories of unshielded twisted-pair cable.

' Six ' refers to the six categories of unshielded twisted-pair cable
Six categories of unshielded twisted-pair parameters have significantly improved bandwidth has expanded to the 250MHz or higher. Six twisted in form and structure with five class or Super five twisted-there are some differences, not only increases the insulation of the cross, the four pairs of twisted wire into the four grooves of the cross, and the diameter of the cable is thicker.
Cross in the middle of the cable changes with the length and the angle of rotation, four pairs of twisted wire stuck in the Groove of the frame, maintain the relative positions of the four pairs of twisted, improve balance characteristics and crosstalk attenuation of the cable. In addition, ensure the balanced structure of the cable is not damaged during installation. Six categories of unshielded twisted-pair cable 0.57mm bare copper wire size (AWG 23AWG), insulated wire diameter 1.02mm, UTP cable diameter is 6.53mm.

Super five or six classes

In accordance with the electrical properties of the different twisted pair can be divided into three categories, five, Super five, six and seven types of twisted pair cable. Different types of twisted pair cable price difference is even, and application range is very different.

In addition to the traditional voice systems still use other than the three types of UTP, network cabling are present to adopt Super five or six categories of unshielded twisted-pair cable. Five categories of unshielded twisted-pair wiring can still support 1000Base-T, but due to the price and Super-almost the same five categories of unshielded twisted-pair cable, therefore, has gradually faded out cabling market.

Six categories of unshielded twisted-pair cable prices are higher, but due to compatibility with the Super five generic cabling system has a very good, and very good support for the 1000Base-T, it is slowly becoming the favorite of cabling. Seven categories of unshielded twisted pair wire because it is a new cabling system, although excellent, but expensive. Less complex construction and selection of products, so rarely used in the wiring project.

Six categories of unshielded twisted-pair cable can be very well supported Gigabit Ethernet, transmission distance and 100m. Therefore, six types of wiring systems are widely used server room wiring, and retain the ability to upgrade to Gigabit Ethernet level wiring. According to the international standards ISO 11801 wiring, cabling system life expectancy of at least 10. As a long term investment, integrated wiring should fully consider the potential demand and network cabling system development, therefore, in the condition of availability of funds, the proposed selection of six types of building wiring systems.

If the Web application in the future, in theory, should be installed the most advanced cabling products, often difficult to update after the installation of cable replacement, basically, a wiring system at least 10 as the standard to be applied, the performance of network devices that support 4-5 updates, if the cable network devices need to be better in the future to improve data speeds.

Then, six cable instead of the Super five cables are unavoidable, but these cables restructuring project is very expensive, so even if the prices of six types of products relative to the Super five products are slightly more expensive, but in order to reduce the network upgrade in the future, six products are still worth considering.

' Super six '
Belden IBDN target was developed in more than 40 ℃ high performance structured cabling system still works, and officially launched at the end of 1999 IBDN 4800LX system, its final index reached 300MHz, but still reached at 50 ℃ 20 ℃ under 6 standard performance indicators. In order to distinguish it from the ordinary category 6 cabling system, this bandwidth performance far exceeds category 6 cabling is called Super-6 class.
Most of the Super 6 generation fabric with the same brand of category 6 cabling using the same module and patch, their main difference on the cable. IBDN Super 6 cable 4800LX from the beginning of the target set for normal operation under high temperature, so the cable structure is one of the largest diameter transmission conductor diameter from a regular class 6 0.5mm (24AWG) increased to 0.6mm (23AWG); Also has some manufacturers at the beginning of the Super 6 cable 24AWG and try to improve the NEXT method is used, but in 2002 to improve its wire and cable into 23AWG. Another feature is 4 twisted pairs to add cross lines between the divider. No cross separated couple in the cable line may be mired in another line in the gap between two wires, reducing the spacing between lines and increase the crosstalk. Divider and 4 pairs of wires with the cable jacket tightly fixed in its design and location, and can reduce cable bending of the lines loose and thus reduce performance degradation when you install. 4800LX was the first to use cross band Super category 6 cable, later cable strive to emulate and use similar technology.

Product rework:

1. product quality issues (Fei renwei damage cases), and buyers can in a cumulative manner, amounted to a certain number of bad products and then back at once, for a good product is also available in next order when sent back along with the order items.

2. send us the product needs repair, please fill in the correct (specify a contact name, address, telephone number and product problems), we will contact you fill in the address, return the product to you.

3. we are not responsible for the shipping product repair, the customer pays.

Replacement problems:

1. different products, has a corresponding warranty period (usually 3 months to 1 year warranty). As a result of quality problems during the warranty period, cases of non-artificial damage, you can replace the new (depending on the product depending on the appearance of the extent of the damage). Warranty period attached to the

On the validity of the warranty sticker on the subject (Note: during the warranty period, the warranty sticker please keep clear, complete and no breakage).

2. customer unsalable products, such as the need to return (returned goods must be to maintain the premise intact, there shall be no damage or signs of wear), the customer must be within 15 days of receipt of goods, contact with our staff, over a period of time, no quality problems do not return.

3. artificial damage, packaging damaged broken, cannot return, special circumstances can be discussed.

4. buyers have just received product found to have problems (such as: product type is not correct, small accessories, such as ... ... Need to contact us within 24 hours of the receipt

Transaction description

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1, purchasing a small number of items can be a direct transfer to PayPal, without notice, the owner will be shipped according to your registration information; If freight is insufficient, the owner will notify you complement the freight shipment online.

2, if you need to purchase multiple items please contact the owner to modify the postage, purchase multiple items together by mail (not overweight) only charge actual shipping costs;

3, the owner cannot be prosperous 24 hours online, so you can be prosperous or QQ or directly within the message, we will reply in a timely manner after the online; Needed can call us, phone number in viewing our Home.

4 If you select surface mail, please wait, 7-14 days after the shipment arrived; 30 days arrival of query.

5, our general use of tact and Huitong delivery, or choose other modes of transport if you need to reach other regions, please contact us before, agreed.

6, before buying things as customers can contact us by telephone, to respond rapidly to your telephone enquiry we can. Because online customers too much, too complex technical problems might we don't have too much time online answering, upon receipt of the goods, if we find there is a problem please contact seller, we will be the fastest speed to deal with after sale! Can the message board! Phone and other forms!

7, after all the goods please see photograph, have any questions, please ask before purchase, please do not order after receiving good as imagined, does not apply on the spot the owner.

8, buyers should provide accurate

The delivery address, consignee and contact information. As a result of receiving incorrect information, commodity do not reach all loss or delay, and fully borne by the buyer.

9, buyers and logistics (Post Office, bus, courier, etc) staff units unpacking the consignment for the examination on the spot, confirm the accuracy of the quality and quantity of goods after receipt the sign that indicates that the goods have been delivered, and the acceptance by the buyer, signed on behalf of others and I checked the same confirmation. Such as problems with the quantity and quality of goods, buyers should hire a logistics firm proof of effective, shooting pictures and contact the store, we will, where appropriate.

10, warranty and after sales (five-star)
Shopping in this store from the date of receipt, quality problems in the 3rd, please promptly contact the owner, we may return postage-free to buyers to replace new products, quality problems within 3 months pay postage, postage buyers themselves back and forth after 3 months warranty.

Faith-oriented, customer satisfaction

We may not be able to ensure that each transaction is perfect. But we must protect the interests of all our customers! If you have any questions, please contact us, the rest of us to solve!

Buyers must-read

All sealed product and one damaged packaging products, please consider unpacking after receipt of goods, once unpacked, on the premise of no quality problems were no way to Exchange or return the goods, because the Department does not sell to any buyer a shrinkwrap product.

Transaction description

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

1, purchasing a small number of items can be a direct transfer to PayPal, without notice, the owner will be shipped according to your registration information; If freight is insufficient, the owner will notify you complement the freight shipment online.

2, if you need to purchase multiple items please contact the owner to modify the postage, purchase multiple items together by mail (not overweight) only charge actual shipping costs;

3, the owner cannot be prosperous 24 hours online, so you can be prosperous or QQ or directly within the message, we will reply in a timely manner after the online; Needed can call us, phone number in viewing our Home.

4 If you select surface mail, please wait, 7-14 days after the shipment arrived; 30 days arrival of query.

5, our general use of tact and Huitong delivery, or choose other modes of transport if you need to reach other regions, please contact us before, agreed.

6, before buying things as customers can contact us by telephone, to respond rapidly to your telephone enquiry we can. Because online customers too much, too complex technical problems might we don't have too much time online answering, upon receipt of the goods, if we find there is a problem please contact seller, we will be the fastest speed to deal with after sale! Can the message board! Phone and other forms!

7, after all the goods please see photograph, have any questions, please ask before purchase, please do not order after receiving good as imagined, does not apply on the spot the owner.

8, buyers should provide accurate

The delivery address, consignee and contact information. As a result of receiving incorrect information, commodity do not reach all loss or delay, and fully borne by the buyer.

9, buyers and logistics (Post Office, bus, courier, etc) staff units unpacking the consignment for the examination on the spot, confirm the accuracy of the quality and quantity of goods after receipt the sign that indicates that the goods have been delivered, and the acceptance by the buyer, signed on behalf of others and I checked the same confirmation. Such as problems with the quantity and quality of goods, buyers should hire a logistics firm proof of effective, shooting pictures and contact the store, we will, where appropriate.

10, warranty and after sales (five-star)
Shopping in this store from the date of receipt, quality problems in the 3rd, please promptly contact the owner, we may return postage-free to buyers to replace new products, quality problems within 3 months pay postage, postage buyers themselves back and forth after 3 months warranty.

Faith-oriented, customer satisfaction

We may not be able to ensure that each transaction is perfect. But we must protect the interests of all our customers! If you have any questions, please contact us, the rest of us to solve!