Briefly talk about EMC test laboratory classification

The quality of EMC design is measured by EMC testing. Only in the whole process of EMC design and development of the product, EMC compatibility prediction and evaluation can detect the possible electromagnetic interference early and take necessary suppression and protection measures to ensure the electromagnetic compatibility of the system. Otherwise, when the product is finalized or the system is built and then found to be incompatible, it will cost a lot of manpower and material resources to modify the design or adopt remedial measures. However, it is often difficult to solve the problem completely, and it brings a lot of trouble to the use of the system.

EMC testing includes test methods, measuring instruments, and test sites.

The test method is based on various standards; the measurement instrument is based on the frequency domain; the test site is a prerequisite for EMC testing and an important factor in measuring EMC's work level. EMC testing is greatly affected by the site, especially for electromagnetic radiation emission, radiation receiving and radiation sensitivity testing. At present, the test sites commonly used at home and abroad are: open field, semi-anechoic darkroom, shielded room, reverberation room and transverse electromagnetic wave chamber.

Briefly talk about EMC test laboratory classification

The labs tested by EMC are basically divided into two types.

One is a third-party independent testing center, and the other is an in-house laboratory. A third-party independent testing center, which is often certified by an EMC authority and certified by the quality system, and has a comprehensive testing and testing laboratory, or a testing center. It includes a shielded room for conducted interference, conduction sensitivity and electrostatic discharge sensitivity testing, a sound-damping shielded room for radiation sensitivity testing, an open field for radiation emission testing, and a full range of test and control equipment. . It takes more than a million to build such a well-established laboratory. The 10-meter-wide anechoic darkroom with a budget of tens of millions is becoming the focus of large-scale testing organizations' scrutiny planning and becoming a veritable crown symbol. For example, Xi'an High-voltage Electrical Appliances Institute and Shandong Institute of Metrology, including the Hangzhou Quality Inspection Institute, which has just completed the tender for the 10-meter French electric wave darkroom in November.

The other type is the in-house laboratory. An EMC laboratory with certain test functions based on the actual needs and funding of the unit. Such test laboratories are small in scale and low in cost compared to large integrated laboratories. Primarily for pre-compliance testing and EMC evaluation. That is, in order to make the product have self-test and evaluation means before final EMC certification. If there are deficiencies, we can also make full use of social achievements, internal and external cooperation, mutual comparison and exchange, in order to achieve cost savings, improve design, and continuously improve the electromagnetic compatibility of products. Some special laboratories, such as electromagnetic compatibility testing laboratories in the automotive industry, such as Changchun FAW Electromagnetic Compatibility Testing Center. Of course, these special tests are often entrusted to large third-party testing seasons, such as Shanghai Tianxiang, a comprehensive large-scale testing agency, as well as specialized automotive laboratories, providing industry-based services that can be used for many automotive OEM electronics. EMC quality control of components has been studied, such as reverberation room testing of automotive parts and EMC performance testing of automotive battery packs.

In terms of test instruments, the automatic detection system with the spectrum analyzer as the core can provide EMC parameters quickly and accurately.

The new EMC scanner combines with a spectrum analyzer to visualize electromagnetic radiation. It can perform all-dimensional three-dimensional testing on individual components of the system, PCB board, complete machine and cable, etc., showing the true electromagnetic radiation status. EMC testing must be performed in accordance with the test methods given in the EMC standards and specifications, and the limits specified in the standard are used as criteria. For pre-compliance testing, although it is not possible to guarantee that the product passes the standard test of all projects, at least the majority of electromagnetic interference can be eliminated, thereby increasing the credibility of the product. And can point out how you can improve your design and suppress EMI emissions.

KDA Miner

Kadena (KDA) is a hybrid blockchain network and smart contract platform that aims to unite public applications, private blockchains, and other interoperable chains in one place, driving traffic to the high-bandwidth computer at the heart of the Kadena public chain. Kadena`s mining algorithm is Blake2S, which supports ASIC mining.


Kadena is a blockchain network and smart contract token aiming to bring together both public applications and private blockchain.

The coin solves various problems that prevent blockchain adoption on a bigger scale. The protocol enables businesses and developers to make transactions and share information across many networks.

The Coin is actually on the grid to reduce users` experience in the network. Ethereum users experience a lot of network congestion which results in high gas fees.


A few changes have come into Kadena mining. A proof of work blockchain uses PACT to create smart contracts in the hidden gen. Therefore you need to know the following before mining Kadena. PACT is an intelligent contract language serving the needs of the blockchain community.

1.You Need an Excellent Mining Hardware
To mine efficiently, you will require suitable mining hardware. Kadena uses ASIC miners. But, unfortunately for Kadena miners, CPUs and GPUs are not usable. Furthermore, ASIC mining receives support from the Blake2S algorithm.

2.Make Sure You Have a Kadena Wallet Address
You will need a Kadena wallet address to receive and monitor your profit. F2pool also makes the distribution of the revenues to every user daily at 2KDA. The Kadena node wallet is a perfect wallet where you can receive your mined KDA. all you need to do is install it, click receive, and have a new wallet address.

You will need to configure your Asic Miner to a mining pool server for your hashrate and profit to be recorded and monitored.

3.Start Mining
After all the setting is done, your miner will be ready to work. Make sure you enter your wallet address and click on the go button to receive your revenue.

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Shenzhen YLHM Technology Co., Ltd. , https://www.ylhm-tech.com

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