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5 DERNIERS ARTICLES
- In-Depth Look at Tx Power and Rx Power of a Fiber Module
- Wired vs. Wireless, Which One Is Better for Your Network?
- Instructions for Building a Copper Network at Home
- Picking the Proper Copper Patch Panel
- Considerations for Deploying a Wired Home Network
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 In-Depth Look at Tx Power and Rx Power of a Fiber Module Alerter l'administrateur Recommander à un ami Lien de l'article 

When choosing fiber module, you may usually hear the description like Tx (transmit) power and Rx (receive) power for a fiber module. Do you know what do these two phrases stand for? If we want to choose a proper kind of fiber module, do we have high requirements on its Tx power and Rx power? In fact, these two phrases are the important parameters of the fiber module which mainly determine the transmission distance of the fiber module. To better know the Tx power and Rx power of a fiber module, let's take them in the 10GBASE SR SFP and 10GBASE LR SFP modules as reference.

Tx Power and Rx Power in 10GBASE SR and 10GBASE LR SFP Modules

In general, the optical Tx power is the signal level leaving from the device which should be within the transmitter power range, while the optical Rx power is the incoming signal level being receiving from the far end device that should fall within the receive power range. Both of the two kinds of parameters are very important factors that affect the transmission distance of a fiber module. The following will study the two factors in 10GBASE SR and 10GBASE LR SFP modules in details.

As for the 10GBASE SR SFP module, it is a kind of multimode fiber module that can support the distance of 300 m over OM3 multimode fiber patch cable. As for the 10GBASE LR SFP module, it is a single mode type of fiber module which enables the 10G network at lengths up to 10 km over single mode fiber patch cable. Why the former module can be only used for short distance transmission but the latter one is able to support the same signal for a much longer distance? Except the differences of fiber patch cables they always work with, it is also relevant to their Tx power and Rx power parameters.

From the figure below, we can easily learn the different Tx power and Rx power between 10GBASE SR and 10GBASE LR SFP modules. As for the 10GBASE SR one, Tx power is between -7.3 dBm and -1 dBm and the maximum Rx power is below -11.1 dBm. With regard to the 10GBASE-LR one, Tx power is from -8.2 to 0.5 dBm and its maximum Rx power is -14.4 dBm. Hence, when choosing 10GBASE fiber module, you are highly suggested to acquire these two information for better knowing the performance of the module.

Tx Power and Rx Power of 10GBASE-SR SFP

Tx Power and Rx Power of 10GBASE-LR SFP

Optical Power Budget for 10GBASE SR and 10GBASE LR SFP Transceivers

We have noted before that the Tx power and Rx power affect the transmission distance of a fiber module. How does the influence happen? In fact, the Tx power and Rx power determine the optical power budget (maximum allowable loss) of a fiber module, which can have a direct influence on the transmission distance. In short, the bigger the optical power budget is, the longer the fiber module will transmit the signal. How to calculate the optical power budget of a fiber optic module? Here is the formula: Optical power budget = Min Tx power – Max Rx power

Let's calculate the optical power budget of 10GBASE SR and 10GBASE LR SFP modules according to the formula. For the 10GBASE SR SFP module, its optical power budget is 3.8 dBm. And the optical power budget of the 10GBASE LR SFP module is 6.2 dBm, bigger than the former one. Hence, there is no doubt that the 10GBASE LR SFP module can support a much longer transmission than the 10GBASE SR SFP module.

Conclusion

Tx power and Rx power of the fiber module are two main factors which can mainly determine the transmission distance. When choosing the fiber module, you can use the Min Tx power to minus the Max Rx power, and then you would get the optical power budget of the module. The bigger the optical power budget is, the better the module will performs.

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 27-03-2017 à 12h15

 Wired vs. Wireless, Which One Is Better for Your Network? Alerter l'administrateur Recommander à un ami Lien de l'article 

As the network develops fast, the form of the network is gradually migrated from wired connection to wireless connection, meeting the increasing needs of the network. Does the wireless connection perform better than the wired one? Are you still hesitating over which connection should be choose to deploy your network? In this paper, it will mainly study the basic information of the wired and wireless connection and find which one is better by comparing these two kinds of network connection, giving you the answer you may care about.

Wired and Wireless Network Overview

As their names imply, the wired network is deployed by using the network patch cable to connect all the devices in the wired network, while the wireless network utilizes radio waves and/or microwaves to sustain interaction channels linking computers, as shown in the following figure. Generally, both of the two forms of network have their own features, which will be introduced below.

Wired vs. Wireless Network

In a wired network, network patch cable is taken full use of to connect one computer with another one or the central device in the network, and there are also other vital devices required like network adapter, hub, switch, or router to deploy further connection. As for the operation, the wired network always use the dial-up way to connect to the Internet and the computer hosting the modem has the ability to administer the Internet Connection Sharing or similar software to share the connection with every other computers on the same wired network. Compared with the wireless network, it will use broadband router that allows easier sharing of cable modem or DSL Internet connections, furthermore the broadband router often includes built-in firewall.

As for the wireless network, it is an additional recent substitute to the wired network that depends on copper and/or fiber optic cabling, which can be deployed easier and faster than the wired one. In its working process, the data is transmitted by radio waves and/or microwaves instead of through the copper and/or fiber optic patch cable. Although the cost for wireless deployment is high, this kind of network is promptly acquiring popularity for home networking because of its convenience. In addition, the most gratifying thing is that the prices of wireless commodities continue to fall as the wireless technology advances fast in recent years.

Wired or Wireless Network?

There is no doubt that the wireless network is very easy to deploy which makes it more and more popular recently. However, there are still many people who would like to choose the wired connection for their network. Why? Doesn’t the wireless network operate better than the wired one? What’s the advantages and disadvantages of these two kinds of network?

When talking about the advantages of the wired network, it is not very difficult to find that the wired network transfers the data information more swiftly and performs more securely and stably than the wireless one. Meanwhile, the devices to deploy the wired network are also not so expensive as that of the wireless one. If one cannot afford the cost for the wireless network deployment, the wired network is still a very good choice. Besides, most of the computers on the market have the wired network adapters that makes the wired network deployment convenient.

However, there are also some disadvantage that should be paid attention to when deploying the wired network. First and foremost, running the wires from one room to another within the home can be a difficult task and the network patch cables would be easy to disorganized in the installing process. And when one network patch cable in the network disconnects or becomes faulty consequently, it will cause the whole connection to fail. Furthermore, if more computers are needed to be connected to the wired network, it may result in unexpected expense. What’s worse, if it run out of the connections on your network, it could slow down the network.

After knowing the advantages and disadvantages of the wired network, let’s talk about the same topics of the wireless network. As for its advantages, it would be very neat and clean without untidy network patch cables and of high flexibility around the home for the connections around the house within a limited range. Meanwhile, it is very easy to be deployed. Even if you haven’t a great deal of networking experience, you can set up a wireless network by yourself very fast. Also, there are three main disadvantages if you choose to deploy the wireless network. Firstly, the biggest drawback of setting up a wireless home network is the high cost as mentioned above. Secondly, the potential for radio interference due to weather, other wireless devices, or obstructions like walls exits, which may make the connection wrong or failed. Thirdly, it is not so reliable as the wired network. Once one major section like the router breaks down, the whole network will be affected.

Conclusion

The wired network transfers the data information more swiftly, performs more securely and stably and costs lower than the wireless network, although it is not so neat, flexible and easy to deploy as the latter one. If you want to own a fast, secure and stable network, you are highly suggested to deploy the wired connection for your network. Besides, Ethernet cable for sale at FS.COM can meet your requirement to deploy the wired network, such as, cat 5e, cat 6, cat 6a and cat 7 cable. Of course, if you’d like to own a very neat network, the wireless network is very suitable for you that can be deployed very fast.

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 05-02-2017 à 07h01

 Instructions for Building a Copper Network at Home Alerter l'administrateur Recommander à un ami Lien de l'article 

Although the wireless network becomes more and more popular for its convenience, most of our home still deploy wired connections with copper based devices that can work faster and more stable. Every so often, we get questions from people who plan to deploy copper based networks in their homes. The most frequent question we get is, "how to fast build a copper network at home?" Considering that, the following will give detailed instructions for building a copper home network in a very fast and smooth manner.

Step by Step Instructions

As the copper based network has an important place in the our daily life, it is very necessary to know the steps for deploying our own copper based network that is much easier than that of the fiber based network. Of course, before deploying, you should consider your requirements for the copper based network, such as, easier access to broadband and WiFi, higher network performance. Then let’s study the step by step instructions for building a copper network at home.

Bringing the Service Provider Distribution Cable to Your Home

Nowadays, the distribution point of copper network cable or fiber optic cable is always installed inside or near the building by the broadband service provider, offering service for each house of the building. In some old buildings, the cables between the end users and distribution point are still copper based, while fiber optic based cables are usually used in the new buildings. If you are living in a new building with fiber optic based distribution point, then you need a ONU (Optical Network Unit) for converting the optical signals into electrical signals and distribute the signals to different ports and home devices. Hence, the service provider distribution cable can be brought to your home. At present, there are various ONUs and routers available on the market, supporting WiFi and satisfying various port requirements. If your home is not very big, you just need to choose one ONU or router for your home network.

Wiring the Whole Connection for Your Home

After introducing the service provider distribution cable to your home, you should decide how many ports your home network requires and how many devices should be connected to the network, which is very important for owning a home wired network with great broadband access. Due to the good preparation, you can do the whole home wiring smoothly without any delay. The following figure shows an example of the whole home wiring that connects the bedroom, living room, office and dining room of this house to the network for your reference.

Building a Copper Network at Home

From the figure above, you can learn that there are several kinds of devices, such as, televisions and telephone, connected to the home wired network for better and smarter performance, which is also know as smart home. For instance, the voice cable is used for connecting the telephone to the network, so that the phone calls would be not missed by the house owner. Besides, other devices like air condition, light control device can be also connected to the home wired network for living in a smart home.

As for the types of the copper cables used for the connections between the network and the home devices, the Cat 5e and Cat 6 Ethernet cable are most commonly used copper based patch cables at present that completely satisfy the requirements of your network. However, the Cat 6a and Cat 7 Ethernet cable are more recommendable with higher performance which are capable of meeting the requirements for both now and future.

Terminating the Copper Cables and Finishing the Whole Deployment

The third step is to terminate the copper cables that used for the whole connection, which plays an important role in deploying a secure and reliable wired home network. In general, the copper patch cable is suggested to be terminated at the wall plate port and a length of RJ45 copper network patch cable should be used for connecting the port with target device, thereby the whole deployment of home network can be finished.

Conclusion

This paper mainly studies the process of how to fast build a copper network at home, which is very useful for people who plan to deploy a copper home network for better performance. In strict accordance with the step by step instructions, you can easily and fast deploy your wired home network. Except that, choosing the most suitable patch cable also can’t be ignored for good broadband access. You can choose one of the most suitable patch cable from the mentioned above Cat 5e, Cat 6, Cat 6a and Cat 7 Ethernet cable to meet the requirements of your network.

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 20-01-2017 à 07h58

 Picking the Proper Copper Patch Panel Alerter l'administrateur Recommander à un ami Lien de l'article 

With the rapid development of the network technology, the network deployment becomes much more complicated than ever before to satisfy the increasing network needs. In order to deploy the the complicated cabling network in a tidy, fast and correct manner, the patch panel is designed to better manage the patch cables in the network, which can be divided into two types, the copper patch panel and the fiber patch panel. To avoid the connection errors and making the cabling network flexible, reliable and neat, this paper will mainly introduce some commonly used types of the copper patch panel that may be helpful for you to pick the most suitable one for your cabling network.

Commonly Used Types of Copper Patch Panels

While the copper patch panel has made a great contribution to the complicated cabling network as a cost effective solution, the type of the copper patch panel has become more and more diversified, such as, shielded and unshielded patch panel, flat and angled patch panel, common and high density patch panel, classified according to the designed aspect. The following will discuss the details of these four types of commonly used copper patch panels.

Shielded vs. Unshielded Patch Panel

Since the performances of the shielded and unshielded patch panel are different from each other, you should consider that should the patch panel be shielded or unshielded to fit your network before ordering the copper patch panel. Besides, you may also wonder that can you use the shielded patch cable with an unshielded patch panel or the unshielded patch cable with a shielded patch panel? Let’s explore these questions and seek the answers.

There is no doubt that the shielded patch panel performs higher than the unshielded one, because the shielded feature enhances the anti-interference performance of the copper patch panel and protects the high speed network from noise and EMI (Electro Magnetic Interference). Considering that the interference is really a risk for the network that may cause transmission errors or failures, the unshielded patch panel is designed for the common applications where the EMI is not very high, while the shielded patch panel is more suitable to be used in the environments with high EMI. Besides, you can also select the patch panel according to the network speed. Moreover, if your network is a 1G Ethernet network, then both the shielded and unshielded patch panel can be chosen. But if the network is a 10G Ethernet network, then you are highly suggested to choose the shielded one. For better know the two types of patch panels, here offers a figure that shows the structural difference between the Cat6 shielded patch panel and the Cat6 unshielded patch panel.

Cat6 shielded patch panel vs. the Cat6 unshielded patch panel

Can you use the shielded patch cable with an unshielded patch panel? It relies on the network environment. In simple words, if there are no high power electrical wires in the network, then you can use the unshielded patch panel. But if arc welders, high power radio transmitters or other high power electrical equipment near the network, you should better go with the shielded patch panel. As for using the unshielded patch cable with an shielded patch panel, it is OK in theory but unnecessary in practice. Because the shielded patch panel is much expensive than the unshielded patch panel.

Flat vs. Angled Patch Panel

On the basis of the appearance design, the copper patch panel can be classified into flat and angled patch panel, as shown in the following figure. The flat patch panel enables the horizontal cabling and routes the cables into vertical cabling, while the angled patch panel makes the cable termination easy and patch cord routing improved. Compared with the former one, the angled design of the latter one increases the rack density, managing high-density applications in one-fourth the area needed for conventional cable management systems. But taking the front depth requirements of the angled patch panel into account, the angled patch panel is not so good for the cabinet installation as the flat patch panel.

flat patch-panel vs. angled-patch panel
Common vs. High Density Patch Panel

As there are often 8 or 12-port configurations on the common patch panel, the high density patch panel is usually designed with 24 or 48 ports as an ideal solution for the applications where there is limited space. Since there are much more ports in the high density patch panel to connect and manage the incoming and outgoing Ethernet cables, it has the ability to conserve the rack space. Hence, if the space is limited in your network, then you can choose the high density patch panel to deploy your network cabling.

Conclusion

After discussion, it can be concluded that the unshielded patch panel is suitable for the applications where the EMI is not very high, while the shielded patch panel is more commonly used in the environments with high EMI. It can be also concluded that the flat patch panel is a good choice if you want to easily deploy the patch panel. Otherwise, the angled patch panel is highly suggested. Besides, if there is limited space in your network, you are recommendable to choose the high density patch panel rather than the common one for conserving space. For easier network deployment and better cabling management, you’d better pick the most suitable patch panel for your cabling network.

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 18-01-2017 à 10h06

 Considerations for Deploying a Wired Home Network Alerter l'administrateur Recommander à un ami Lien de l'article 

There is no denying that it is very convenient for the public to use the wireless network, which is more and more popularly used in recent years. However, if the high speed and efficiency are required, the wired network must be more suitable for you to choose, which always works with Ethernet patch cables to enable a more secure network with faster speed. In general, except for some special devices like cellphone that can only used in the wireless network, the rest of your devices will perform better in the wired network.

Wired Network

Would you also like to deploy a wired network for your home? Since the deployment of a wired network is more sophisticated than that of a wireless network, this paper will present some considerations for you to set up a fast and smooth wired home network.

Design Your Network

Before deploying the wired network, there are some points that you should take into account. Firstly, you must decide how many rooms you want to run your wired network through, which will mainly determine the deploying budget. Because it will dictate how many feet of Ethernet patch cable you need to use. Secondly, you must confirm how many devices you would like to connect to the network and where you decide to locate them. Thirdly, since there may be a lot of Ethernet patch cables put in use in the wired network deployment, the wire distribution also becomes very crucial for a neat and smooth wired network which you should attach importance to. Considering that these Ethernet cables would be easy to mess up, you’d better to design the wired network and consider all possible problems that may occur during the installation.

Besides, there are two notes that you should also pay attention to when designing the network. The one is not to place the Ethernet patch cables near the devices, for instance, microwave and TV, which will have a negative effect on the performance of data transmission. Another one is to put the router in a central place of your network, ensuring good signals when your network runs.

Choose One Type of Patch Cable

As we all know, choosing a proper patch cable is extremely important that can make a great difference to the network speed. If you want to gain a stable network with high data transmission rate, then you should choose the most suitable cable for your network. At present, the patch cables used for the wired networks are usually Ethernet patch cables, which can be divided into various types, such as, Cat 5, Cat 5e, Cat 6, Cat 6a, Cat 7 patch cable, etc. Among these types, Cat 5e and Cat 6a patch cable are more commonly used the wired network in recent years, both of which are highly recommended as the cost effective solutions.

Prepare the Related Materials and Tools

After making the decisions about where and how the cables will be distributed, you should firstly measure the distances of the connections in your network and calculate how long the Ethernet patch cable the whole connection needs, as the Ethernet patch cable is the main equipment in the network. To avoid some unexpected issues, the whole length of the Ethernet patch cable you prepare should slightly longer than the calculated length. In addition, there are many other tools you should also prepare before the installation, for example, wall plates, jack ports, drywall cutters, cable clips, etc. All these tools will be used in the installing process. Hence, you should check and confirm the preparation, so that the installation procedures will be smoothly processed as planed.

Conclusion

There is no doubt that the wired network performs higher than the wireless network, although the deployment of the wired network is much more sophisticated. If you want to own a more secure and faster network, then the wired network would be a better choice for you and the points mentioned above are three important factors that would be useful for you to make a fast deployment for the smooth wired home network.

  Aucun commentaire | Ecrire un nouveau commentaire Posté le 13-01-2017 à 09h39


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