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In the PCB design process, if the risk can be predicted and circumvented in advance, the success rate of PCB design will be greatly improved. Many companies have indicators of PCB design success rates when evaluating projects.

The key to improving the success rate is signal integrity design. Currently, there are many product solutions for electronic system design, and chip manufacturers have done it, including what chips are used, how to build peripheral circuits, and so on. In many cases, hardware engineers usually do not need to consider the circuit principle, just need to make the PCB itself.

However, in the PCB design process, many companies have encountered difficulties, that is, the PCB design is unstable or not working properly. For large enterprises, many chip manufacturers will provide technical support to guide PCB design. However, some SMEs have difficulty obtaining support in this regard. Therefore, we have to find a way to do it ourselves, so we have a lot of problems, we may need to play multiple versions and debug for a long time. In fact, if you understand how the system is designed, you can avoid these situations. Next, let's talk about three techniques for reducing the risk of PCB design.

First, it is best to consider signal integrity issues during the system planning phase so that the entire system can be built and can signals be properly transferred from one PCB to another. This will be evaluated early and it is not difficult to assess this. Some signal integrity can be understood through simple software operations.

Secondly, in the PCB design process, the simulation software is used to evaluate the specific traces to see if the signal quality can meet the requirements. The simulation process itself is very simple. The key is to understand the principle of signal integrity and guide.

Third, in the PCB manufacturing process, it is necessary to conduct risk control. There are many problems. At present, there is no way to solve the simulation software, and the designer must control it artificially. The key to this step is to understand where risks exist, how to avoid them, and what is needed for signal integrity.

If you master these three points in the PCB design process, you will greatly reduce the risk of PCB design. The probability of making a mistake after playing back is much smaller, and debugging is relatively easy.
Tags: PCb design
lhdblog 10 october 2019, 2:04

In this technology-centered era, all businesses whether big or small, require a fast, reliable and stable network connection within their headquarters. Establishing a competent network connection requires a lot of indoor and outdoor wiring, working in tight uncomfortable places and more. Often times when installing a network cable, people tend to overlook some slip-ups which could cause problems in the future. Therefore, it is essential to keep in mind that setting up a network cable requires proper planning and preparation. Before you begin it is important to check the environment your cabling will run through. Places that are exposed to a lot of heat or excessive moisture can lead to network failure and safety hazards so it is recommended that you choose a cool and dry place.

If a project is done hastily and not executed in the right manner, it could result in the business-facing hidden expenses, slower network performance and impact the overall productivity and drive of the workers.

Here are five mistakes you should be avoiding when installing a network cable:

1. Feeble cable management
Firstly, you need to ensure that you are carefully handling cables for installation and have understood the specifications for each of them. It’s important to double-check with this error so you are not scratching your head later when your cabling is faulty. This might be a time-consuming task but its benefits are never-ending and it mostly saves a lot of labour cost for maintenance.

Similarly, there needs to be room left for updates or replacing cables as and when required. When there is limited space available, it could create a hazardous environment and cause issues in replacement of older cabling. Also, you must be aware of the distance limitations on your cabling depending on the purpose. Since every cable comes with its own set of specifications, if not researched on thoroughly they can cause disturbance throughout the procedure.

Ensure that a cable is compatible to perform accurately or connections will lag and can be challenging to fix without professional help. Remember poor cable management can have a direct impact on the functional expenses of a business and if not fixed, will influence the lifespan of the servers, devices, and storage connected to it.

2. Different cables for data and voice
This is one of the most common mistakes made by businesses or homes. During the earlier days, two separate cables were installed for data and voice instead of twisted cabling, since they were considerably more expensive. However, it is filed under efficient cable management to install one twisted pair cable than two single cables.

Now, with the upsurge of VoIP in businesses and different industries, it demanded data-level cabling. VoIP tools and equipment helps you to save money on multiple cables and generally, one cable is easier to handle to avoid confusion and cluttering. It is notable that IT hardware will always continue to update and evolve but using the right cabling will provide flexibility to grow over a prolonged period of time.

3. Positioning network cables parallel to electrical cables
This can cause disturbances in the connection and quality of a signal since network cables are sensitive to electromagnetic fields. Various network cables are made up of twisted pairs where two conductors are twisted together to terminate the electromagnetic interference (EMI) from peripheral sources.

The benefit of this is that it prevents network cabling from interfering with each other but a magnetic field surrounds them generated by the minimal voltage that flows through them. During installation, one must ensure that these two are not stationed alongside as to avoid any interruptions in that magnetic field. Instead, run them perpendicular to one another, this is known to work fine in places like offices which have a lot of electrical wiring.

4. Forgetting to secure cabling during installation
Sometimes companies are in a hurry to get their network installation wrapped up. This must be avoided at all costs as it puts the specialists under pressure and often leads to misplacements, unsecure cabling and more. Granted it takes time to make sure that there is no cluttering and unorganized cabling, it is crucial as ignorance on such matters can cause changes in the external nature of the cables and disrupt their efficiency.

5. Compromising with the Quality/Version
Majority of businesses require technology and network connection since it helps them in several aspects of their daily tasks and results. Therefore, to compromise on the quality of your cabling can cause you to suffer major consequences in the future. With the growing progressions of technology, it is important to observe the quality and specifications of the cables you are investing in. The smarter move is to opt for worthy Ethernet cables that are able to enable strong connections within your workplace.

While you might not require lightning speed at the moment, it is suitable to go for a reliable choice that can cater to your firm’s needs. Cat6 rj45 is a stellar choice that offers speed up to 10 Gbps, provides minimum crosstalk and protection from tempering.

Moreover, not following proper rules and regulations while undergoing network installations has known to cause accidents. For instance, the use of PVC-jacketed cabling is banned in most places due to the toxic smell produced when it burns. When inhaled by any being, it can be harmful, lead to severe health issues and if the authorities find out, can result in hefty fines.
Mishaps can happen anytime but it is always preferred to be aware of such mistakes beforehand so you can prevent them from occurring. The best way to go about network cabling is to invest in good quality cables, equipment, and proficient network installation experts to avoid any regrets in the future. It is always a great idea to test the network and cabling once the installation is complete to check the speed transmission and signal strength.

Keeping the above points in mind, you’ll be able to ensure that everything runs smoothly and enjoy a successful network connection. All the best!
iarslan 17 september 2019, 7:42

Structured Wiring
Network Cabling Services by ExterNetworks offers Cat 5e plenum cable installation for up to 150 ft. and 300 ft. The cabling is to be done on the same floor, and no drilling and coring are required. The technicians are highly-qualified and provide best-in-class customer service experience.

ExterNetworks sets the industry standards for seamless and reliable network cabling solutions for various projects. As a leader in Managed IT Services, we ensure that all of your structured cabling, network wiring, and network cabling installation will meet your project requirements with an on-going commitment to top-notch services & customer satisfaction.
shravaniv 11 december 2018, 11:14

A web camera is absolutely necessary when connecting with friends via video call software like Skype or Google hangouts. But when the built-in webcam is your laptop has stopped working, what would you do? Send it to computer repair store or buy a new external computer camera? Actually the repair cost may be higher than a new external camera. And If you require high quality video call, it’s better to have a USB camera. You have many choices of a good desktop webcam. What you should do to change built-in webcam to external computer camera?

Disable Internal Webcam
Disable the internal webcam through Windows. Click in the top right-hand corner of Windows and select the "Search" charm, then type "device manager." Click on "Device Manager" under "Control Panel" to launch Device Manager. Expand the section beside "Imaging Devices" and then right-click on your webcam and choose “Disable”. After these process, your computer program like Skype is able to recognize your new pc camera.
ausdom 16 may 2017, 8:14

Apple makes fantastic mobile products, but its flimsy USB lightning cable deteriorates too quickly. One of the most common problems faced by iPhone and iPad owners is a frayed Lightning connector. Surely there must be tougher, more rugged options?

The obvious solution is to go back to the Apple store and claim the warranty (or AppleCare if you have it). Another options is to ditch Apple's cable altogether and get something better made by a third party.
ausdom 27 april 2017, 10:34

Surely, you paid attention to the computer using which the young John Connor hacked PIN-code to the ATM and the access code to the lab in Terminator 2. This computer was the Atari Portfolio. When the movie was showing in theaters in 1991, it seemed beyond the fiction. I was lucky to find it, and I want to share with you its features.
image
Killer 4 february 2014, 13:02

The article will concern the work of “brains”, which operate the engine of your car or motorbike. I will try to explain as simply as possible and in general, what and how is going on.

What do these “brains” do and what are they for? Electronics is an alternative to other systems performing the same functions. The carburetor used to deal with fuel metering, the ignition used to be operated by the mechanical or vacuum advance measure of the ignition advance. In general it can be realized not by electronics alone and it used to be just this way for quite a long time. On the cars, motorbikes, petrol-powered saws, petrol generators and other places worked and keep working the same systems that are to substitute the injector.
Why was it needed to change anything? Why should the existed, proved and rather reliable system be repealed? It is quite simple – a pursuit of economy, ecology and power. Work accuracy of the written above systems is not enough for the supply of the desired level of ecology and powerfulness, electronic systems of the engine controls began to appear long ago.
Tags: AFR, injector, MAF
Killer 7 may 2012, 18:14

"I can send the IP packet to Europe faster than I can send a pixel to the screen. How f’d up is that?" John Carmack asked in his Tweeter. His tweet caused a broad resonance in the community, so Carmack explained that to measure the lag on Sony HMZ-T1 analog display he used a program that changes the contents of the buffer by pressing a button on the controller, and a screen with the video camera 240 fps. Then he counted the number of frames between pressing the button and changing pixel.
Skull 3 may 2012, 17:00

imageEven though I use an ultrabook for several months, I saw it from inside only recently.
(Yes, you understood correctly. This is the XXI century, and a remote access is available for both the ultrabook and an ordinary computer).
Thereafter, I was not interested in the technical specifications of ultrabook, but I wondered about its physical parameters, and they did not disappoint me. Ultrabook was really slim. It could be even hidden under a sheet of paper.
Its weight has exceeded all expectations. Yes, the ultrabook is light, but it is not ultra light. My Asus Zenbook UX31E (as well as other models, including the Lenovo IdeaPad U300s and Dell XPS 13) weights 2.8 puonds.
To be more precise it weighed before. We were able to reduce its weight by almost 1.1 pounds!
Pirat 27 april 2012, 15:24

Hello dear colleagues!

imageToday I would like to talk about electronics that I work with in my spare time, namely it is a racing car engine control.
Let's start describing the situation as a whole. In the car racing often the result does not depend only on a sportsman as in many other sports, but also it depends upon the equipment that sportsman uses. So, there is needed a professional approach to training and tuning up the racing car. Of course, there are a lot of nuances. But if we roughly divide this into the parts, we will get the chassis adjustment and engine tuning. Today I would like to tell you what electronics is used to tune up the engine of racing cars.

The modern racing engine (and the engine in your car) is controlled by a specific computer: Electronic Control Unit. It controls all processes that are going on inside and all on-board electronics. The most popular solutions are manufactured by the companies, such as Motec and Pectel. I am using in my car Motec M800, which is going to be as an example that I will discuss how it works.
Killer 8 april 2012, 20:07
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