Sony 4K HDR arc screen TV S8500D series stunning listing

When talking about Hu Ge, what do you think of? High face value male god? Strength actors? In fact, he is far more than that. The Hu Song outside the screen is no longer the idol of the people, but a person who knows and enjoys life. In a previous Sony TV commercial, the Almighty "Mong Sovereign" returned to life in a natural and casual state, or at home watching TV to spend time, or about 35 friends to share the scenes recorded when they went out and play. story. This natural and brisk life rhythm is particularly impressive as it revolves around Sony's 4K HDR TV. Following the success of the X9300D/X8500D series, Sony's new arc screen TV S8500D series was officially launched in the early summer. This will bring HDR and the now curving arc screen design to an unprecedented immersive experience. .


Set high value and talent in one

As early as 2013, Sony launched the first arc screen LED TV S990A in China. In the area of ​​arc-based TVs, Sony is undoubtedly rich in technical experience and technology accumulation. Now the advent of the new arc screen S8500D series can be said to be more cutting-edge arc screen TV technology. The scientifically calculated arc of science can naturally fit the retina of the human eye. The S8500D series can not only create a private cinema-level immersive experience and a sense of envelopment, but also ensure that the user can get a relatively consistent visual experience when viewed from any angle. As if immersed in the environment, avoid the narrow perspective of the "emperor" position.


At the same time, relying on the outstanding performance and contribution of HDR technology in TV picture quality, the Sony S8500D series has made significant breakthroughs in definition, brightness, and color, and it has never been lost in the details of the picture. Closer to the natural view of the actual scene, the details of the light and dark areas that were difficult to present in past and other branded products are also better represented. In addition, Sony TV's 4K sharp image processing engine PRO, Terricolor display technology and alcohol sound technology +, low-frequency reflection speakers are used to create a delicate, high-quality audio-visual experience.


Regardless of their talents, the value of a face alone is also very difficult to control. Under the unique Japanese aesthetics, Sony's new arc screen TV S8500D series has a minimalist and pure appearance, smooth and beautiful curve design, can easily integrate with all kinds of home environment, just like the fine art in the living room Products. The silver frame contrasts with the black screen, making the TV show a technological sense of fashion. With its delicate wire management, it is also possible to subtly hide the redundant wires on the TV and make the space transparent and neat.

Excellent experience, smart entertainment, a key upgrade
In addition, Sony's new arc screen TV S8500D series is equipped with an Android 5.0 system specially tailored for TVs, allowing users to enjoy rich APP content while operating experience is more simple and smooth. The built-in Hua Digital TV boasts a large number of movies and television episodes. When families and friends gather together, they can enjoy the immersion of home theater. In addition, users can use the audio and video sharing function of their TVs to make those mobile phones or tablet computers beautiful. The instant freezing frame is sent directly to the TV screen, shared with everyone, and recalled together. The degree of warmth can be imagined.

Living in a swift and fast-paced city, if you want to comfortably house a home, a Sony arc screen TV S8500D is undoubtedly the best choice to relieve people's stress and fatigue while enjoying the astounding audio and video enjoyment. In no way inferior to the cinema effect, why not?

At present, Sony's new arc screen TV S8500D series has KD-65S8500D (65) and KD-55S8500D (55) models, the official suggested retail price of 16,999 yuan and 10,999 yuan. Interested users can go to Sony China Online Store, Sony Store, and distributors around the stores to learn more, experience and purchase.

What PCB designer Must Know About Impedance Control PCB


Controlled Impedance PCB Meaning


Impedance control has been one of the essential concerns and tough problems in high-speed PCB design. Impedance is the sum of the resistance and reactance of an electrical circuit. The resistance being the opposition to current flow present in all materials. In high frequency applications, controlled impedance helps us ensure that signals are not degraded as they route around a PCB. Resistance and reactance of an electrical circuit have a major impact on functionality, as certain processes must be completed before others to ensure proper operation.


Impedance Control PCB


Because of complex processors, USB devices and antennas are printed directly on the circuit board surface. The speed of signal switching on the circuit board increases, and the electrical characteristics of the tracks that transmit signals between devices become more and more important. Therefore, more and more PCB designs need impedance control and testing.


Impedance control technologies are quite important in high-speed digital circuit design in which effective methods must be adopted to ensure the excellent performance of high-speed PCB. The impedance of a PCB is largely determined by some factors, such as trace width, copper thickness, dielectric thickness, dielectric constant. Impedance, generally measured in Ohms. We must control the resistance and reactance of an electrical circuit to ensure the quality of signal in the complex design. For example single-ended impedance 50 ohm ±10%, differential impedance 100ohm ±10%.






When to Use Controlled Impedance


When a signal must have a particular impedance in order to function properly, controlled impedance should be used. In high frequency applications matching the impedance of PCB traces is important in maintaining data integrity and signal clarity. If the impedance of the PCB trace connecting two components does not match the components` characteristic impedance, there may be increased switching times within the device or the circuit. There may also be random errors.

Please note that we also need special instructions here: In DC circuits there is no reactance and the resistance of copper conductors is typically insignificant. However in high speed AC circuits (those with sharp changes in voltage and/or current) the reactance and thus the impedance can become very significant. This can become critical to a design's functionality because of the effects that changes in the impedance along the signals path from transmitter to receiver will have on the efficiency of power transfer as well as signal integrity. While a circuit`s speed is often expressed as the frequency of the wave form: the critical concern is the speed at which the voltage and/or current is required to change.



What Determines Controlled Impedance?


The characteristic impedance of a PCB trace is typically determined by its inductive and capacitive reactance, resistance, and conductance. These factors are a function of the physical dimensions of the trace, the dielectric constant of the PCB substrate material, and dielectric thickness. Typically PCB trace impedance can range from 25 to 125 ohms. The impedance value generated from the PCB structure will be determined by the following factors:

– Width and thickness of the copper signal trace (top and bottom)
– Thickness of the core or prepreg material on either side of the copper trace
– Dielectric constant of the core and prepreg material
– Distance from other copper features




Impedance Control In PCB Design


Example of Printed Circuit Board with Controlled Impedance Design

Electrical Impedance: A measure of opposition to time-varying electric current in an electric circuit.

The Problem: "A", "B" and "C" signals all reach the component at the same time.

The Solution: Apply Impedance to Circuit "C" to slow the signal enough for the component to first calculate ("A"+B").

Similar with a cable, the signal encounters a change of impedance arising from a change in material or geometry. Part of the signal will be reflected and part transmitted. These reflections are likely to cause aberrations on the signal which may degrade circuit performance (e.g. low gain, noise and random errors). In practice, board designers will specify impedance values and tolerances for board traces and rely on the PCB manufacturer to conform to the specification.

When rise times continue to reduce, inevitability the number of traces requiring impedance control will continue to increase. Where impedance control is needed it is important to control it accurately, calculating it with the most representative cross-section we can create.




Applications of Controlled Impedance


Controlled Impedance should be considered for PCBs used in fast digital applications such as:

– Telecommunications
– Computing 100MHz and above
– High Quality Analog Video
– Signal Processing
– RF Communication




Impedance Control PCB Manufacturing


In order to meet the growing demand of impedance control PCB, PCB manufacturers have invested a lot of money and manpower and material resources in production technology, in order to meet the production requirements of customers.

Due to the difficulty of impedance control PCB production, PCB manufacturers generally require PCB designers or purchasers to provide more detailed information and requirements, such as the type of material required, copper weight and thickness of the board, the number of layers, gerber file, so that the manufacturer can prepare the bill of materials (BOM). Impedance information should be clearly marked in Gerber file. If the necessary information is lacking, even a little key information will make it difficult or impossible for the manufacturer's engineers to know exactly what the customer needs.

Impedance-controlled PCBs are also divided into three different situations:


No Impedance Control: This is a situation where you do not need any extra design elements to ensure correct impedance because you have very loose impedance tolerance. Naturally, this will result in a faster-completed, less expensive board because the manufacturer does not have to include any special measures.

Impedance Watching: What is impedance watching? This is a situation where the designer will outline the impedance control trace and the PCB provider adjusts the trace width and dielectric height accordingly. Once the manufacturer approves these specifications, they can begin to manufacture the board. You can request a Time Domain Reflectometry (TDR) test to confirm the impedance for a fee.

Impedance Control: Actual impedance control is something you will typically only request when your design has tight impedance tolerances that could be tough to hit the first time around. When the capability limits of the manufacturer get close to the dimension requirements, it can be tough to ensure target impedance on the initial attempt.

In the case of impedance control, the manufacturer makes the circuit board achieve the target impedance as far as possible. Then they tested TDR to see if they succeeded. If not, they adjust accordingly and try again until they reach the required impedance.




Impedance Control PCB Fabricator


Impedance Control PCB is too complicated? No worry! JHYPCB engineers can help you at any time as we have three shifts. Free stack-up and impedance calculations can be offered upon request. We will work with your engineering team at the conceptual level of the PCB design to assist you to get better results in controlling impedance by choosing the suitable laminate and layer stack up.


Why Impedance Control PCB can be shipped timely all the time? As common materials are stored well in JHY PCB warehouse regularly. We have heavy copper thickness, 2oz, 3oz or more. Odd copper thickness H/1 oz, H/2 oz, 1/2 oz. Foil: 1/4 oz, H oz, 1 oz, 2 oz, 3 oz.


If you need order Impedance Control PCB, just make notes in Readme file, and send it together with Gerber, our engineer will take care of it. Have a try!

Impedance Control PCB

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