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NOYAFA's Noyafa

2021-10-13
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SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED has an absolute right to speak in the production of Noyafa. To manufacture it perfectly, we have employed a world-class team to improve the production process and equipment so that the quality and efficiency can make a qualitative leap. In addition, the cumbersome production process is optimized to make the functionality more stable.'The quality of NOYAFA products is truly amazing!' Some of our customers make comments like this. We always accept compliments from our customers due to our high quality products. Compared with other similar products, we pay more attention to the performance and details. We are determined to be the best in the market, and in fact, our products have been widely recognized and favored by customers.Most products at Best Cable Tester Supplier in China _ Noyafa are offered with in-house logo options. And we promise fast turnaround time and extensive custom capabilities to create perfect Noyafa.
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Does Fiber Optic Testing Procedure Have Warranty Period?
Does Fiber Optic Testing Procedure Have Warranty Period?
Yes, NOYAFA provides warranty service for fiber optic testing procedure. Being a quality-oriented company, we warrant our products against defects in materials and workmanship. In general, under normal use and service, every portion of the product will be free from physical defects during the warranty period. However, once there is something wrong with the product, it will be repaired or replaced as determined solely by us. We provide a limited warranty for our products only to the person or entity that originally purchased the product from us or our authorized distributors or retailers.SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED is an expert in manufacturing fiber optic testing procedure. Being distinctly superior in fiber optic testing procedure, our products gain more and more popularity. You give trust our fiber optic testing procedure and we will give good quality in return.We pledge our best efforts to make your experience both beneficial and enjoyable. Check it!· Related Questions:1. How long is the warranty period of fiber optic testing procedure?At NOYAFA, every provided product comes with a certain period of warranty. We offer warranty service for any quality problems of our products within a selected period of time. You can see the specific warranty period from product information on our website. If there is no such information provided on our website, please consult us. During the warranty period, we can offer return/replacement service for products of any quality problems. Please be confident to buy from us. A high level of quality and service is our commitment. ——————— 2. How to extend fiber optic testing procedure warranty?NOYAFA gives customers the option to extend the warranty of fiber optic testing procedure. In this way, we hope our customers will feel more comfortable with their orders. But please note that from Chinese manufacturers, the warranty cost is usually included in the price of the product whereas an extended warranty costs extra and is sold separately. You shall consider whether the product will require repair and the possible cost of such repairs. It is suggested that customers make a decision at the time of purchase, or within a few more days or weeks to return to us and purchase the extension.
In Case of These Six Cable Faults, It's Right to Choose It for Detection
In Case of These Six Cable Faults, It's Right to Choose It for Detection
With the characteristics of faster inspection speed and high precision of cable fault detector (also known as cable fault detector, cable fault locator and cable fault tester), it has won the favor of many customers. Many powerful enterprises will purchase a set of cable fault detector equipment to ensure the smooth operation of cables in the industrial zone. For equipment with these 6 kinds of cable faults, please choose this cost-effective cable fault tester. 1. Low resistance fault, cable insulation material is damaged and grounding fault occurs. 2. In case of open circuit fault, the continuity of the metal part of the cable is damaged, resulting in wire breakage, and the insulating material at the fault point is also damaged to varying degrees. 3. High resistance fault, cable insulation material is damaged and grounding fault occurs. 4. Flashover fault: the insulating material of the cable is damaged, resulting in flashover fault. 5. Breakdown fault: in actual work, the cable insulation damage event triggered by preventive test is commonly referred to as cable breakdown. 6. Operation fault refers to the cable fault determined by eliminating the possibility of faults of other power elements when voltage fluctuation occurs in the high-voltage secondary circuit of cable feeders, motor and transformer during the operation of plant power system or grounding signal is found (grounding tripping occurs in power elements with grounding protection).
Working Principle of High Voltage Cable Fault Locator
Working Principle of High Voltage Cable Fault Locator
High voltage cable fault locator is a comprehensive cable fault detection instrument, which can test the high resistance flashover fault, high and low resistance grounding, short circuit, cable disconnection, poor contact and other faults of the cable. The cable fault locator is equipped with an acoustic pointing instrument, which can be used to accurately determine the accurate position of the fault point. It is especially suitable for testing power cables and communication cables of various models and different levels of voltage. The high voltage cable fault locator consists of three main parts: power cable fault tester host, cable fault locator and cable path tester. The host of the cable fault tester is used to measure the nature and total length of the cable fault and the approximate position between the cable fault point and the test end. The cable fault locator determines the exact location of the cable fault point based on the approximate location of the cable fault point determined by the host of the cable fault tester. For buried cables with unknown direction, a pathfinder shall be used to determine the underground direction of the cable. The basic method of power cable fault test is to apply high-voltage pulse to the fault power cable to produce breakdown at the cable fault point. When the cable fault breakdown point discharges, it generates electromagnetic wave and sound at the same time. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The main products are street lamp cable fault tester, underground pipeline detector, cable identification instrument, etc. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Best Cable Tester& Cable Tester Software
Best Cable Tester& Cable Tester Software
This article will help you find the best cable tester for your needs.A good cable tester is more than just a cable tester. It should be able to give a sufficient overview of the cable connections and be able to identify any problems with the connection.There are many different types of cable testers and they all do the same thing.In the cable industry, there is a need to test different cables, both for the purpose of quality assurance and in order to make sure that a certain product is compatible with different types of equipment.There are several software products available for testing cable, especially as they become more common in homes and businesses. Some of them have been designed specifically for testing cables. But the problem is that most of them require you to install it on your own computer or laptop first before you can use it. Some are hard to use and require too many settings so that you have to go through many options before finding an appropriate setting.This article will guide you through some tips on installing any cable tester properly so that you can quickly get your cable tested without having to do much research. It will also point out someWe have a cable tester, a type of cable plug that is used to ensure the quality of cables. The cable tester has four prongs and is connected to the main power supply by one wire. These wires are also connected in pairs: one goes to the positive terminal and another goes to the negative terminal. When you want to connect two wires together, you need to connect them first in pairs (with positive and negative terminals) and then separately in pairs (with positive and negative terminals) as shown below:In order for you to test whether or not two cables are connected properly, you will need a cable tester socket adapter. This device looks like an ordinary socket with only one wire on it. The connection between these two wires is made with an adapter. You can find theseIn order to make sure you get the best deals on TVs, Blu-ray players, etc., you need to do some research. You might have heard about a TV review site named "BestBuy" or a "Best Buy". You might also have found yourself going there to check out the latest offers only to be disappointed when your search didn't turn up anything interesting.As you've probably come to realize, there are a lot of possibilities when it comes to finding the best deals on TVs, Blu-ray players and other gadgets. But even if it is easier than ever before, there is still so much information that you need in order for these tradesmen and women to be able to offer quality recommendations.Best cable tester ensures that cables are properly connected to all the devices.With accurate, fast and reliable cable testers, you can easily save your business money.The cable tester software is an essential tool for any cable equipment buyer. It helps to assess the quality of a cable, measuring it's resistance and voltage.Cable testers have been in use since the 50's. The need for them is now less, but they are still widely used in the market.The best cable testers can help you to test Ethernet cables, power cables, phone wires and other wired connections. They also include various other inputs and outputs from home appliances like refrigerators, washing machines and dishwashers.The best cable testers can also be used in different situations to find out whether your device is working properly or not. If your computer isn't functioning properly, you should check the cable of it first before taking any action on it immediately to make sure that there are no faulty connections or miswired devices present in the system because of which your computer won't work properly at all. On the other hand if something goes wrong with a certain deviceToday's cable tester software/hardware is very sophisticated and works in a particular niche. This makes it a perfect fit for cable testers who are looking for precise information such as the channel number, the length of the cable and the condition of the cable.While there may be other software that can do these tasks, this software provides them quite well. This is why you should consider purchasing this software to get some competitive edge in your field.
Composition of Buried Cable Fault Detector
Composition of Buried Cable Fault Detector
The buried cable fault detector consists of rt-2133 cable fault tester host, rt-2132j cable fault locator and rt-2132f cable Pathfinder. The host of rt-2133 cable fault tester is used to measure the nature of cable fault, the total length of the tested cable and the approximate position between the cable fault point and the test end. Rt-2132j cable fault pointing instrument determines the exact location of cable fault point based on the approximate location of cable fault point determined by the host of cable fault tester. For buried cables with unknown trend, cable Pathfinder shall be used to determine the trend of underground cables. If the specific direction of underground cables is known, cable Pathfinder may not be used. The host of rt-2133 cable fault tester can be directly connected with the notebook computer for easy management and operation. The rt-213x complete set of cable fault test instruments can quickly and accurately find the fault points of various cables. It is suitable for factories and mining enterprises, metallurgy, petrochemical systems, power plants, airports, railways, power supply and other departments. Rt-213x cable fault comprehensive tester is widely used to detect low resistance, short circuit, open circuit and various high resistance faults of aluminum core, copper core power cables, high-frequency coaxial cables and local telephone cables with different sections below 35KV. It is a necessary equipment to ensure safe power supply and a powerful assistant for cable production and maintenance workers. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The main products are cable fault locator, cable identifier, live cable identifier, etc. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Hybrid Circuit Fault Diagnosis Based on Current Test
Hybrid Circuit Fault Diagnosis Based on Current Test
Abstract: in the process of hybrid circuit fault diagnosis using wavelet neural network, the selection of test parameters is very important. A fault diagnosis method based on current test is studied. Through the static and dynamic current information of PSPICE analog circuit and the combination of wavelet neural network, this method proves the feasibility of this method in hybrid circuit fault diagnosis, and provides a new method to improve the fault diagnosis rate of hybrid circuit.Keywords: wavelet neural network; Hybrid circuit; Current test; fault diagnosis0 IntroductionWith the rapid development of electronic technology and the continuous improvement of manufacturing technology, the complexity of the circuit is increasing and the chip size is decreasing. More and more mixed signal circuits are integrated on the system level chip, not just digital circuits or analog circuits. Because of the different testing methods of two circuits, traditional testing can no longer meet the development needs. This brings hitherto unknown challenges to designers, users and maintainers of the instrument and equipment, and also makes the detection of mixed mode signal circuits more and more seriously. The hybrid circuit fault diagnosis based on current test proposed in this paper is proposed under this background.1. Theoretical knowledge of current testCurrent test is to detect and locate the circuit fault by measuring the power supply current and effectively extracting the circuit fault information. It includes static current test technology IDDQ and dynamic current test technology IDDT.When the circuit works normally, the quiescent current is very small, but the quiescent current of the defective circuit is very large. Therefore, when the quiescent current in the circuit is detected to be abnormal, it can be determined that the circuit has failed. This is also the principle of IDDQ test. However, some faults in CMOS circuits, such as open circuit fault, do not cause abnormal quiescent current. Therefore, it is necessary to introduce dynamic current test here. Based on this, this paper considers the combination of quiescent current and dynamic current test, rather than simple quiescent current test. IDDT is a short conduction current, that is, during the state transition of CMOS circuit, PMOS transistor and NMOS transistor are turned on at the same time, so that a conduction circuit is formed between power supply and ground, as shown in Figure 1. Since IDDT is the change of current in the process of dynamic conversion, the size of IDDQ does not affect its result. Therefore, it also avoids the influence of the increasing static leakage current of deep submicron circuits on the test. This paper studies the significance of the combination of the two in hybrid circuit fault diagnosis.2 wavelet neural network for hybrid circuit fault diagnosisWavelet neural network is a combination of wavelet analysis theory and artificial neural network ANN theory. At present, there are two ways to combine the two:(1) Loose combination. That is, wavelet analysis, as a preprocessing means of neural network, provides input eigenvectors for neural network.(2) Compact combination. Wavelet and neural network are fused directly, that is, wavelet function and scale function form neurons.This paper adopts the combination of loose wavelet and neural network. Firstly, the modeling and Simulation of normal circuit and fault circuit are carried out through PSpice, and the static current IDDQ and dynamic current IDDT parameters are extracted. The characteristics of the obtained current are extracted by wavelet analysis in MATLAB, and analyzed in combination with neural network. The steps are as follows:(1) Parameter extraction. The current information of normal circuit and various fault circuits with bridge fault, open circuit fault and so on are extracted in PSPICE.(2) Wavelet analysis. The current information obtained in (1) is decomposed by wavelet in MATLAB, the wavelet coefficients are extracted, and the RMS is further calculated.(3) Fault location. Wavelet analysis and BP neural network are combined to analyze and judge the positioning effect. The specific steps are shown in Figure 2.
Brief Introduction of Cable Identification Instrument
Brief Introduction of Cable Identification Instrument
The working principle of the cable identification instrument needs to add a special signal to the identified cable, which should be received by a special receiver. Using this characteristic, the cable to be found can be identified. The cable identification instrument works according to the following principles: the cable identification instrument consists of a signal generator, a receiving clamp signal detector and an indicator. The signal generator mainly generates special pulse modulation signals, which are added to the stopped tested cable through the output line. The receiving clamp is used to find the tested cable on site. When the receiving clamp detector detects the special signal applied to the cable, The electric meter pointer on the signal detector swings synchronously with the frequency of the applied signal, while the signals detected on other cable lines are much smaller and in the opposite direction. It is easy to determine the tested cable by indicating the amplitude and direction of the electric meter. When the receiving clamp signal detector is used in combination with the signal generator, it can be used to distinguish the charged state of the cable, or assist in finding the short circuit position of the cable. When receiving clamp signal detector is used, clamp the cable with clamp. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Specifications for Cable Fault Tester
Specifications for Cable Fault Tester
1. Long test distance: 32km2. Detection blind area: 1m3. Reading resolution: 1m4. Power consumption: 5va5. Service conditions of cable fault detector: ambient temperature 0 ℃ 40 ℃ (limit temperature - 10 ℃ 50 ℃), relative humidity 40 ℃ (20 90)% RH atmospheric pressure (86 106) kpa6. Volume: 225 × one hundred and sixty-five × 125mm38. Weight: 2kg1 traditional cable fault detection method 1.1 measuring resistance bridge method this method has hardly changed for decades. For short circuit fault and low resistance fault, this method is very convenient. The bridge method is based on the principle that when the bridge is balanced, the product of the corresponding bridge arm resistance is equal, and the length of the cable is directly proportional to the resistance. 1.2 low voltage pulse reflection method low voltage pulse method, also known as time domain reflection method (TDR), means that the pulse reflector independently measures the low resistance and open circuit faults of the cable without passing through the high voltage impactor. 1.3 pulse voltage sampling method pulse voltage sampling method, also known as impulse high voltage flashover method, is a test method for measuring high resistance leakage and flashover faults. Firstly, the cable fault is broken down under the DC or pulse high voltage signal, and then the distance is measured by recording the time required for the discharge pulse to go back and forth between the measuring point and the fault point. Pulse voltage method mainly includes DC high voltage flashover (direct flashover method) and impulse high voltage flashover (impulse flashover method). 1.4 traditional method of cable fault location ①acoustic measurement method this method uses the breakdown and discharge sound of the fault point during high voltage impact to accurately locate the fault point. ② Dear customers: Hello, our company is a high-quality development group with strong technical force, providing high-quality products, complete solutions and superior technical services for the majority of users. The main products are high voltage cable fault tester, cable fault locator, intelligent cable fault tester, etc. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
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During 15 years development, Noyafa has become the most famous brand in cable testing industry in China. With excellent production capability, reliable quality, good after-sales service, we get good reputation from customers all over the world.
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