Category Archives: Tech

Want to be free of all the possible troubles in FTTH? Get these 3 steps done!

Want to be free of all the possible troubles in FTTH? Get these 3 steps done!

FTTH technology provides an ideal platform for high-speed broadband access to users’ homes and brings great benefits to the fixed access network and advanced wireless network. FTTH network is based on optical fibers, which enables numerous end users to share a center office (node or access point) and make the demands for high bandwidth come true. Now, the most cost-effective set of FTTH solution about fiber optic cable selection, cabling deployment, and FTTH installation will concentrate in this post.

  1. Fiber optic cable solution of FTTH

Many people don’t have a clear idea about how to select appropriate fiber optic cables for their FTTH network deployment; basically, there are only two main points that can help you figure it out totally.

  1. What types of fiber optic cables can effectively work for FTTH?

Three kinds of fiber optic cables are normally used for FTTH; they are single-mode fiber optic cable, multimode fiber optic cable as well as bending insensitivity fiber optic cables.

  1. How to get the cost-effective fiber optic cables?

Seen from the above comparison, the single-mode fiber optic cable can most satisfy the demands for FTTH network. However, single-mode fiber optic cable also costs most among the three optical cables, which makes it not adopted sometimes in some FTTH applications. Therefore, for getting the proper fiber optic cables, there are several practical considerations that would help:

  • Network structure

The structure of the network has a significant impact on the data transmission rate and the optical power budget of the network. The supportive data transmission rate and optical power of different fiber optic cables would be different. So choose the appropriate cable type according to the specific network structure.

  • Network size

The size of a network generally refers to the number of end users that the network can support, but in this context, the network size refers to the physical distance between the access point and the end users. In general, single-mode fiber optic cable is for long-distance transmission, multi-mode fiber optic cable is for short-distance transmission.

  • The existing used fiber optic cable type

If you are ready to expand the existing fiber optic network, use the fiber optic cable as same as the original cable type.

  • Longevity

In general, FTTH can last at least 30 years, so choosing a long-life fiber optic cable is very important. In the long run, the high-quality fiber optic cables can greatly save FTTH network operating costs.

  1. FTTH deployment

After getting a set of FTTH devices and cables, you should work out a deployment scheme for FTTH network. Fortunately, we conclude two schemes to deploy FTTH: active Ethernet and passive optical networks, which have their respective advantages and disadvantages. So there will be following the detailed introduction about these two schemes from multiple aspects, and you would learn which one is suitable for your situation.

Active Ethernet

Active Ethernet is a point-to-point network as shown in the following figure, which is a very simple network infrastructure with dedicated fiber-optic lines to connect the central office with network terminals.

There exists a dedicated fiber optic line between each terminal and the central office, so the lines management and maintenance in active Ethernet are quite simple. The advantages of active FTTH network architecture include: network power budget and troubleshooting is extremely easy to estimate; data transmission is more secure and so on.

Active Ethernet architecture and components

The core components of the point-to-point network are the core switches, converged switches, and optical network terminals (ONT). Among them, the core switch is a high-capacity Ethernet switch, which transmits the data, video and audio signals from service providers through the MPLS-based metropolitan area network or regional network to the access network users; the converged switches can be placed at the central office, and also at the indoor entrance or outside depending on the environmental requirements of the network provider. It transmits data to multiple optical network terminals (ONT) at a transmission rate of 1 Mb / s to 100 Mb / s. The following diagram is a common architecture of active Ethernet in the access network.

Passive optical network

A passive optical network is a point-to-multipoint network in which each end user is connected to the optical network through an optical splitter so that active devices are not used throughout the optical distribution network. The advantage of FTTH passive optical networks is that the passive devices can withstand outdoor harsh environments without power supply. For network carriers, the passive devices of the network also make the network operation and maintenance costs greatly reduced. The following figure is a simple diagram of a passive optical network.

Structure and components of passive optical network

Optical line terminal (OLT) is an important component of the passive optical network, usually located in the local exchange. Similar to the active Ethernet, the optical network terminal (ONT) in the passive optical network is also placed on the users’ end. The difference is that its optical network terminal (ONT) is connected to the optical line terminal (OLT) via optical fibers and passive optical devices (optical splitter). Optical network terminals (ONT) can be placed indoors, but also on the street. The following figure is a common architecture of passive optical networks in the access network.

The following table is for the clearer comparison between active Ethernet and passive optical network (PON):

  1. Things must be done before FTTH installation

After determining the FTTH deployment scheme, the next step is to get it installed. In the process of installing the devices and cables, pollution is mostly an issue that can’t be ignored. Because a little contamination in fibers is likely to cause a higher insertion loss and return loss, sometimes even damage the network devices. As a result, to avoid any pollution or damage happen to the network infrastructure, there are some steps have to be done before installation.

  1. Check the fiber optic connector

The interior of the fiber optic connector is highly susceptible to contaminations and damages. Common types of fiber flaws are dust, oil, pits, debris, scratches, etc., which are difficult to see by the naked eye. Therefore, before installing the connector, check whether the connector especially the end face is qualified. The inspection procedure of the fiber optic connector is as below:

  • Check the end face of the connector with a fiber optic microscope.
  • If the end face is contaminated, clean it with dedicated cleaning tools.
  • Check the end face again to ensure it is free of contamination and then install the connector immediately.
  1. Check the fiber optic end face

There are two situations about the fiber end face. One is the fiber end face of fiber patch cable, another is the end face inserted the device or fiber optic adapter panel. For the former, we only need to connect the fiber optic microscope to the connector of the fiber jumper, and then check the end face; for the latter, connect the scanning probe microscope to the device or adapter panel before checking the fiber end face.

  1. Clean the polluted fiber and fiber optic connectors

There are two ways to clean the fiber: dry cleaning and fluid cleaning. When applying the dry cleaning, we can use a variety of cleaning paper or cloth to clean the fiber, it should be noted that not to re-use the paper or cloth, so as not to cause pollution to the fiber.

When applying the fluid cleaning, it requires cleaning solvent and paper. The following are the noted when using cleaning fluid to clean the fiber:

  • It is not suggested to use alcohol to clean the fiber, because it has characteristics of moisture absorption, flammability and non-volatile. The alcohol remained on the fiber is easy to combine with the water molecules in the air, so to pollute the fiber; It is recommended to use fast-flowing, non-combustible sealed cleaning fluid;
  • Do not directly clean the fiber end face in the cleaning solvent. The correct step is to pour a little cleaning solvent to the cleaning paper, and then clean the fiber with the cleaning paper;
  • Use a clean, dry wiping paper to clean the connector’s ferrule;
  • Do not leave the cleaning solvent around the ferrule.
  1. Loss budget

Before starting to install the FTTH network, confirming the loss budget can ensure the installation goes well. The ITU-T G.671 standard specifies the various loss budgets in the fiber link, as shown in the following table, so you can get the total loss before installation.


Either the fiber optic infrastructure of FTTH or the practical deployment, each step is quite significant for the whole FTTH network system, and requires a lot of knowledge of fiber optic technology and products to accomplish it well. Besides that, there still requires sharp eyes to select a reliable FTTH solution provider as there are too many fiber optics sellers to identify a really good one from the first glance, but there are also multiple reputable ones you can trust like of Shenzhen, China. This post is not only giving the whole set of knowledge of FTTH, and also concludes the most cost-effective solution to FTTH deployment.

The Truth on Finish Nailer

Finish Nailer

When purchasing a nailer, you need to make certain it’s something you are able to easily use. Finish nailer is a widely used power instrument. Should you be a professional, the best finish nailer for you’d be a progressive one from a celebrated brand. It’s your choice to select the ideal finish nailer for you.

The nailer also includes a drive cylinder along with a magazine produced from lightweight and incredibly durable aluminum. In addition, these nailers have a slick and angled layout. Metallic connector metallic connector nailers are utilised to fasten metallic connectors to wood or composite framing members.

Not only are you able to drive nails quicker with the additional pressure, but additionally it lets you use extensive selection of air tools besides your nailers. To work out this matter, special forms of nails are designed, known as brad nails and finish nails. The nails arrive in a number of lengths and sorts, so it is not hard to utilize the one which is very fit for the job accessible. The nail driving system isn’t too complicated to get.

The Advantages of Finish Nailer

The nailer also has to be lightweight to guarantee easy handling. Therefore, you can realize that choosing a finish nailer isn’t everybody’s cup of tea. Even a finish nailer will probably make the work fast and simple. With the online error, Hitachi NT65A3 finish nailer is only a click away irrespective of the corner of the planet you live in. Behold a treatment is here, the treatment is Hitachi NT65A3 finish nailer.

The Chronicles of Finish Nailer

Since a sole nailer won’t drive all the kind and size nails needed for building or assembly work, many manufacturers offer combination kits including nail guns with a extent of nail gauges. As mentioned above, there are various varieties of finish nailer kits are easily obtainable. This is a very important tool for so a lot of individuals. It can allow you to understand which finish nailer kit is easily the most proper for you and will help you to buy the perfect finish nailer available on the market. It is possible to locate several forms of finish nailer kit on the market.

Nailers may be categorized into two key groups. Hence an incredibly durable nailer is necessary so the nails will be accurately installed to whatever medium you wished to use, be it wood, steel or another medium. A brilliant exceptional nailer has a magazine that could let for any broad number of fasteners.

Framing nailers are made for fastening enormous parts of lumber and needs a tool which can manage high-powered and fast work. Moreover, siding nailers are employed in assembling fencing. The siding nailer is created with an important magazine.

Finish nailers aren’t quite common. In regards to nailers, you have to have something that accompanies power, flexibility along with a broad array of qualities that could assist you to accomplish quite a few nailing endeavors in a limited time period. These sorts of nailers are utilised to complete work. In the event you are looking for a finishing nailer, the wealth of alternatives available on the marketplace may be extremely perplexing, particularly if you’re purchasing nailer for the very first time. With regard to selecting a great nailer, people frequently get lost. In reality, cordless finish nailers appear to be outselling pneumatic ones although they’re priced higher. In the event you’re trying to find a budget straight finish nailer, the NuMax SFN64 is going to be a perfect option for you.

Buy Instagram Followers for Jewelry Business

instagram new followers

instagram new followersHaving more followers while you are running a business is a blessing. More followers mean that you have high publicity level which helps you greatly in boosting up your sales level, especially when you are running a business in the Jewelry industry. People are most concerned about fashion these days. Everyone wants to look beautiful by using these accessories as a helping tool. Jewelry business has a great potential for success when you buy real Instagram followers. Since people are more concerned about having a stunning look, there are many reasons and ways if increasing your followers on Instagram, either by buying or other ways

Applications on play store

Many of the applications present on play store offer you with the service of increasing your followers in no time. You just have to install those useful applications and with a single click, you can see your number of followers increasing in days. This increase in followers will result in enhancing your sales records.

Getting help of a fashion figure

You can seek help from any influential fashion celebrity to increase your followers. The order goes like this. You offer a minimal fee to a celebrity in return of some posts. That fashion celebrity upload two to three picture per month with your brand name and the people following that person automatically start noticing you. All that celebrity has to do is post some picture of your product in a natural way or tag you in some posts per month. For this easy way, you can earn real Instagram followers having trust on you because people trust the words of celebrities.

Online website for followers

For buying followers, you can contact one of many online websites available. These websites provide you followers for free or in exchange for small charges. Use this amazing opportunity to market your business. Jewelry selling is a business that cannot be conducted in an isolated world. You have to step out from your store and make people aware of what you are offering to them. For introducing your product to the customers use the brilliant platform of Instagram. This is sure way of making you popular among a large chunk of the community.


You should use maximum hashtags related to your product to make your website easily accessible to the users. The hashtags of #pretty #gorgeous and #stunning will suit best for your line of business. You can also download some applications for developing resembling hashtags for your business.

These are some of the exciting and easy ways to have a maximum number of followers on Instagram you can buy Instagram likes for your jewelry business and reach sky-high success levels. Make use of these effective techniques to reach your potential customers. You can also use other techniques such as using your brand name as username and providing the address of your official page in the description of your page. This will help to lead followers directly to your sole website, giving you an extra benefit.


What You Should Know Before Actually Buying a Propane Powered Scooter

What You Should Know Before Actually Buying a Propane Powered Scooter


Scooters are fast becoming a convenient mode of transport for an individual. In this day and age, it makes a lot of sense to adopt one of the fastest means of commuting rather than having to sit in a traffic jam for much of the day. Scooters help make a person much more productive, as a direct result of reducing the commute time. Before you hurry and get your first scooter, there are some things to know:

Types of Scooters

There are different forms of scooters with each option suitable for a different kind of personality. While motorcycles are for the open road and long-distance cruising, scooters are primarily meant for city commute. Some of the different options when it comes to scooters are the regular gas powered scooters, electric scooters, and the propane powered scooter. To learn more about them, please read our article.

Basic Advantages of Progo Scooter

Each comes with its own advantage and disadvantage. In the case of the gas powered scooter, running expenses can be quite high – especially amongst other forms of scooters – but it is easier to maintain and it does not take a long time to fill up.

Electric scooters have zero emissions, but they will be extremely hard to defend since they take a long time to charge and also offer much less range than some of the competitors. It takes around 6 to 8 hours to fully charge up and scooter and one can realistically expect around 40 miles of range.

Propane powered scooters have the best of both worlds, as they do not need charging up, while they also produce far fewer emissions than a regular gas powered scooter. It also takes only a few minutes to fill them up. One of the best options in the market is the Progo scooter, which has a powerful 25 cc engine giving it a top speed of 20 mph.


Almost every scooter is available for around the same price, but the cost of ownership can vary significantly. Electric scooters are the cheapest to run, but they can incur quite an expense when it is time to change the batteries. Gas powered scooters are almost similar price, but they are slightly more expensive to run. Propane powered scooters are not only inexpensive while running, but they are as cheap as a gas powered scooter in order to maintain the vehicle in prime condition.

Since the scooters are also extremely basic in terms of their construction, anyone with a remote interest in vehicles can service any of the faults.

Emissions of Propane Powered Scooters

Many of us look to enter into the world of scooters for the environment-friendly aspects that they offer. Compared to a car, scooters produce far fewer emissions and are much safer to the environment. Yet, gas powered scooters are amongst the most polluting as a result of using the regular fuels like petrol. Even though the amount of CO2 emissions may be much lower in comparison with a car, they are rather high in comparison with other forms of scooters.

Electric scooters have no direct emissions, but there are claims that the electric scooter produces indirect emission since the electricity is often coming from a coal-powered thermal station. Further, the batteries that are used to store the energy also produce a lot of pollution – during their manufacture and disposal.

Propane is not only available at a much lower price than regular gasoline, but it has a high octane value in the region of 98 to 102. As a result, it burns for cleaner than regular gasoline while also possessing no additives. The overall efficiency of the fuel is much higher, thus leading to even lower emissions. Gasoline powered scooters are deemed illegal in some parts of the world, but propane powered scooters have been able to become legal at the same time.

There are numerous factors to consider when buying a scooter. Yet, it is rather clear that the propane-powered scooters are the way to go forward.



How to Ace IBM PureData System for Analytics Technical Mastery Test v1

IBM PureData System for Analytics Technical Mastery 1is definitely one of the top certification these days. This is a certification that is designed for IT professionals with the best goal to achieve the right means to make it big.


This is an ideal ticket that the professional can get in order to effectively achieve or gain the IBM PureData System for Analytics Professional designation, it can be your perfect tool to help you gain the successful career. To gain the certification, all you have to do is to pass the IBM P2090-050 test.

Details of IBM PureData System for Analytics Technical Mastery Test v1

• IBM PureData System for Analytics Technical Mastery Test v1has 40 multiple choice questions.

• The allowed time to complete the test is only 1 hour and 30 minutes only.

• The required passing rate for IBM P2090-050 test is only 71 percent.

• The available languages for such certification are English, Spanish Castilian, Portuguese (Brazil), Latin American Spanish, Japanese and German.

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To help you own this IBM Business Analytics Performance Management certification, it is very essential if you can use some of the top materials designed for this credential. Some of the right materials for such certification test are brain dumps, e-book, practice test and journals. If you can use these materials, it can be you main ticket to guarantee success like Certschief IBM exams preparation material is money back pass guaranteed.

The interested professional who wish to get the certification needs to possess the best materials that contains the most updated and relevant material. Not having the right materials for this certification cannot help you succeed. Commitment and determination is all you need when preparing for IBM Business Analytics Performance Management certification exam. If you will give your time, energy and effort for this certification test, it will definitely provide you the best chance to gain the perfect tool to make it big in the competitive world of information technology. Once you own this top certification, it can be your main ticket to help you succeed in life.

Topics/Sections for IBM Business Analytics Performance Management Test

The following are some of the main topics for this certification test:

• Architecture (25%)
• Database Design (15%)
• Database Administration (45%)
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Target Audience for IBM PureData System for Analytics Technical Mastery

The target audience for IBM P2090-050 certification exam are IT professionals who are aiming to prove their expertise and skills with PureData Systems for Analytics Technical mastery solution.. It is a must for the candidate to have at least one year experience in IBM PureData System for Analytics Technical Mastery solution.