NOYAFA's Network Detector

NOYAFA's Network Detector

2021-10-04
NOYAFA
19

On this page, you can find quality content focused on network detector. You can also get the latest products and articles that are related to network detector for free. If you have any questions or want to get more information on network detector, please feel free to contact us.

network detector from SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED is known for combining aesthetics, functionality, and innovation! Our creative design team has done a great job in balancing the appearance and function of the product. The adoption of high-quality materials and the industry-leading advanced technology also contribute to the strong functionality of the product. Besides, through the implementation of the strict quality management system, the product is of zero-defect quality. The product shows a promising application prospect.We make efforts to grow our NOYAFA by international expansion. We have prepared a business plan to set and evaluate our goals before we get started. We move our goods and services to the international market, making sure we package and label them in accordance with regulations in the market we are selling to. Customers can benefit from the shipping service we provide at Best Cable Tester Supplier in China _ Noyafa. We have stable and long-term cooperative shipping agents which provide us the most competitive freight charge and considerate service. Customers are free of the worry of customs clearance and high freight charge. Besides, we have discounts considering product quantities.
more products
recommended articles
Info Center News
Experience and Depth Analysis of Cable Fault Locator
Experience and Depth Analysis of Cable Fault Locator
At present, the cable fault locator mainly adopts the method of acoustic measuring points for various main insulation faults of power cables with medium and high voltage and above voltage levels. Dgz-1827 cable fault locator has this function. Open circuit fault acoustic measurement method wiring diagram. For simple open circuit fault, if acoustic measurement method is adopted, wiring shall be carried out according to the following figure. For various short-circuit faults (so-called metallic grounding faults), it is difficult to judge the fixed point by acoustic measurement method. Audio method or other methods can be used. For sheath failure, the step voltage method is generally adopted for straight tunnel and the clamp current method is generally adopted for trench tunnel. For various faults of low-voltage cables (usually leakage and open circuit faults), acoustic measurement method, step-by-step method and audio method can be used. Fixed point method of fault point in special cases, discharge probe of fault point at the near end of fault cable. For the closed insulation fault, the suspicious part of the cable can be manually and mechanically moved, and the location of the fault point can be determined by monitoring whether the insulation resistance value of the fault phase changes. For the intermediate joint failure, compare the vibration sound waves of the faultless intermediate joint and the faulted intermediate joint to determine the intermediate joint failure (the vibration sound waves generated by the faultless intermediate joint are transmitted far away, there are no * big sound points, and the sound is relatively small). In recent years, due to the extensive use of various rubber and plastic cables, product quality and construction technology quality, it is difficult to locate cable faults. There are usually two cases of high ground wire loop resistance: 1. The copper shielding layer of the cable produced by the manufacturer is discontinuous and has a breakpoint. 2. When the cable construction unit makes the cable joint, the ground wire connection or lead contact at the cable joint is poor. From a technical point of view, improving the principle of fault fixed-point test will produce positive results. However, to fundamentally change the current situation of cable fault test technology, it is mainly an efficiency problem. We should start from two aspects of management and technology, and simply emphasize that on the one hand, it is not very objective.
AI Wire Tester, Data Statistics Correction Software
AI Wire Tester, Data Statistics Correction Software
How can an individual be a successful professionally?As a writer, you should be able to quickly get the necessary information of your content. This can be done using wire testers which are basically software applications that help you get the information you need. You can use them to search and find out the content ideas by using keywords or titles.Wire tester software is a tool used to test any kind of network connection. They are the ones who can test it for security and some other purposes. In IT industry, they also test the performance of servers and client computers.A custom IT project is the perfect way to test-drive a software solution. It's a chance to see if it works on different types of devices and environments. And it's cheap: thanks to automated testing, you can test any kind of software and hardware solution in a matter of minutes.With the help of automated wire testers, IT is able to create software or systems with more flexibility.The goal is to create software that improves productivity and facilitates work flow. These project management tools provide clients with a system for sorting out the tasks they need to perform throughout their workflow, and then tracking exactly how much time they spend on each task or each action, thus making them accountable for their timing and results.Using an automated wire tester, both the author and the client can create custom IT projects with ease. The wire tester is a piece of software developed by a professional computer engineer. It takes as input bytes from an application or text file, populates the variables that are available in it and produces results that are more understandable to the end user.These automated wire testers are used by most of the IT companies for testing their applications and infrastructure in order to ensure maximum uptime of their servers over time.Wire tester is a software that can test the communication between your computer and a web server. The software is used by people who need to keep an eye on their website visitors, or for website developers who need to monitor the traffic of specific pages.Wire Testers are used when an organization needs to test their product. Sometimes these testers are not fully comfortable with their skillsets, or they feel that there is no other way to test their product than by spending money on a professional tester.A wire tester is a person who tests frequently in order to see if the product works as expected and meets the customers’ needs. They usually work with computers and networks which can be either local or remote. They can be paid professionals, self-employed individuals, students or freelancers.Wire testers should have technical skills related to computer programming languages like C# and .NET Framework (Windows/MS). In addition, they must have experience of using automation software like Java and .Automated Wire Tester (AWT) is a program that provides users with the ability to capture and test their IT systems. With it, they can troubleshoot and fix any potential issues on their network.Automated Wire Tester has a long history of providing automated solutions for the IT industry. In this article, I will discuss about why it is good for business.Automated Wire Tester (AWT) consist of several useful features that will help any IT project manager make decisions, including:Automated Wire Tester (AWT) is a tool that allows us to create custom IT projects. It does it by providing an end-to-end management across all the project phases. By integrating the manual and automated processes, it ensures that we are leaving no stone unturned while taking our projects to completion.The following is a list of things to be included in machine learning models:"Wire Tester" is a popular software used to test the functionality of various products. Like other software, it has its benefits and disadvantages.We should not think of these wire testers as a replacement for human testers. They can help with the testing process but they are not actually the product developers or designers themselves. They just provide assistance to the product developers by providing feedback on their designs and coding practices.For years, the primary goal of copywriting was to write a great ad and get the best possible result.However, today there are so many different tools on the market that it is not uncommon to find several different bullet points in various kinds of ads. This presents a huge challenge for copywriters. Especially as marketing budgets have been shrinking rapidly over time and the need for advertising has never been greater.
Operation Precautions of Mine Cable Fault Tester
Operation Precautions of Mine Cable Fault Tester
Coal mines and oil wells are large users of cables. Due to the harsh underground operating environment, the annual damage of various cables is relatively large. In order to save expenses and reduce production costs, each mine and oil well is generally equipped with its own cable maintenance department. However, due to the limitation of testing equipment, the maintenance of cables is often unsatisfactory; The AC / DC cable detection device independently developed and produced takes the high-voltage breakdown method as the principle, so that users can accurately find the cable damage point in the maintenance process. Moreover, the mining cable fault tester also has the function of testing after the old cable is repaired. Therefore, this device is an essential maintenance equipment for cable maintenance companies in coal mines and oil wells. 1. Insulating rubber pad shall be added before the equipment. 2. Operators shall wear insulating rubber shoes and insulating gloves. 3. The tested cable core and high-voltage terminal shall be firmly fixed with nuts to maintain good contact and avoid leakage and current increase caused by * * discharge. 4. Irrelevant personnel shall be prohibited from approaching the work site. 5. After one year of use, the transformer oil shall be subject to withstand voltage inspection in time, and the withstand voltage shall not be less than 30KV / 2.5in. 6. Regularly (depending on the strength of the equipment), carefully polish the surface of the discharge copper ball with zero sandpaper, and keep the surface and surrounding clean and free of dust. 7. The use effect of the equipment depends on the careful maintenance of the user, the continuous accumulation of operation experience, and the mastery of the relationship between the ball gap spacing and the discharge voltage of different cables. 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 high voltage cable fault locator, underground cable fault tester, 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!
Cable Fault Test Procedure
Cable Fault Test Procedure
When using cable fault tester (echo method) to test cable fault, the following procedures shall be followed: â‘´ multimeter, megger or judge the nature of cable fault from the cable pre-test results. (2) select the appropriate test method according to the nature of cable fault: the pulse method is best used for low resistance fault and open circuit fault. Of course, the flashover method can also be used for low resistance fault. Flashover method (impulse l method) is best used for leakage high resistance fault, and direct flashover method can also be used for some leakage high resistance faults, but this is usually not done. Direct flashover method is best used for flashover high resistance fault, or both methods can be used to measure and compare each other to improve the accuracy of judgment. (3) select the working grounding point, and lead out two grounding wires respectively from the selected grounding point, one to the ground of the instrument and the other to the ground of the high-voltage equipment. The selection principle of working ground wire is to ensure that the test phase and it form a closed loop, so that the instrument can obtain the correct test waveform. It should also be noted that the working ground wire must be connected with the system to make the human, instrument ground, high-voltage equipment ground and the tested cable ground in the same position. To ensure personal safety and integrity of instruments and equipment. If the cable is in phase to phase fault, the working ground wire must be one of the phase wires, and the phase wire as the ground wire must be connected with the system ground. For the cable with lead-free bushing, most of the faults are discharged to the earth or space during the high-voltage flashover test. Theoretically, the fault also forms a closed loop relatively to ground or space, but in fact, the equivalent impedance in the loop is quite large, so the correct test waveform can not be obtained on the instrument. In case of this situation during the test, the method of directly fixing the suspicious fault point can be adopted to solve it. No matter what ground wire, its grounding point must be reliable. (4) test the total length of the cable with the pulse method to calibrate the radio wave transmission speed of the tested cable. (5) rough test the fault point according to the selected test method. (6) fix the fault point after rough measurement.
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
Any meter that can check voltage, current and resistance is called a multimeter. To prove that the electrical testing is new to us, we often ask our residents if they can teach an apprentice how to properly use a voltmeter or multimeter. Once you understand how to use a multimeter correctly, you can proceed to troubleshooting and troubleshooting electrical problems, checking sockets, checking continuity and more.Proximity to the voltage detector is a good first test, followed by direct contact with the meter. The voltage is relative to the two points at which it is measured by the meter, so a voltmeter must be connected to two points in the circuit to get a good measurement.As part of the test, the 70E requires a conductor circuit with phase phase phase and phase to ground. Note that this requirement does not apply to medium to high voltage systems, so proximity voltage detectors are the preferred test method.Non-contact voltage testers are the safest way to ensure that the current touches the wire. They light up and make no noise, but they can get very close to hot electric wires, especially those covered with plastic insulation.Select a low or high voltage level to verify the presence of a voltage contact with an energy-rich conductor. If you hear continuous chirping or see a series of flashes, confirm that the tester has detected voltage.Test your battery at every stage and measure your readings to optimum voltage. These tips lead to the use of a test circuit that you can see when working with your RV batteries.Some manufacturers of voltage sniffers recommend holding the tester with bare hands and keeping it close to the body. To use a two-pronged voltage tester, place a cable in a metal box containing the ground wire and a solid copper wire, and the other cable you are testing, but never use a two-pronged multimeter. The measurement of the signal allows calculations without the stress of a CT socket tester or circuit analyzer (practical socket voltage testers are ideal for checking voltages and showing if a socket wire is missing a wire, such as the grounding wire).Like any technology or device, your digital multimeter has a lifetime. A visual inspection can be carried out to check and ensure that your multimeter is working properly. Inspection of light must be carried out with electrical energy Floor inspection facilitates the repair of motor vehicles Inspection of a lamp is simple and inexpensive, especially for 12 volt vehicles.These multimeters have the same properties as a voltmeter and check current, resistance and continuity. At the top of the charts in the best-selling multimeter category, Kaiweets Digital Multimeter will do the work for you. It features accurate measurements of AC and DC voltage, AC / DC current and resistance, continuity, frequency, capacitance, diodes, liquid temperature, battery control and shutdown measures.If you do not have a multimeter, you can use a voltage detector instead of a voltmeter or a continuity test instead of an ohmmeter. User-friendliness has little to do with the multimeter that holds your readings for you, as you cannot see what you are working with on the screen. Use it instead to tell you if the white or black cable is in the inverted socket, or if the underground cable is inserted into the box or plugged into the socket.As soon as you receive a reading from your meter, check if it has a switch called DC. Be sure to follow the instructions to get the maximum amount of current that the meter can handle. To see how this works, let's look at a few examples to show how the meter is used.Use a low-voltage proximity tester to measure the circuit to be tested when the low-impedance voltage tester is connected. Figure 2 illustrates the final reading of the voltage displayed by the proximity testers and the voltage displayed by the tester. The tester measures the voltage (Figure 3) and if it is several volts above or below, it indicates the presence of a voltage, and if there is a voltage in the circuit, a power supply must be found before moving on.If the circuit voltage is lower than normal and the current is high, a harmful spark can occur the moment the last meter probe connection is established. In the multimeter version, the zero ohm resistance is tested with the probe tip (red) and the probe is plugged into the red current measuring socket. When the voltage is measured in this mode (red LED plugged into red V socket) and many mega ohm resistors are tested from the probe tip, the voltmeter is designed to be close to infinite resistance, so that it does not draw any significant current from the circuit's tested circuit.We used the voltage sniffer on a metallic light in a kitchen or sink to check if it was grounded. When the luminaire is not grounded, a hot wire comes into contact with it and the wire will supply the metal with energy, making an electric shock a hazard. The voltage sniffer found no power cables grounded in the metal wire.When using a voltage detector the following checks should be carried out: Check for optical damage, third party labels and indicate the date of the next routine inspection. Check whether the maximum permitted voltage range is can be used depending on the voltage rate of the power supply system (in mV / hV) (Note: 2 test ranges are possible with KP-Test 5 Dual Voltage Detektors as indicated by the number of green LEDs ). The voltage ranges available, the ATEX approval, the choice of tip and antenna shape vary according to the application of the volt stick, but the right product ensures safe work on site.I call it a voltage sniffer but the technical name for it is a capacitive voltage sensor. Inspectors use voltage sniffers for a few different things, so it's important to have one or two spare parts ready. Voltage sniffers use black magic to determine whether wires are alive or not, and they are 100% reliable at all times.
Three Common Methods for OTDR Optical Fiber Testing
Three Common Methods for OTDR Optical Fiber Testing
Optical fiber communication is a communication mode with optical wave as carrier and optical fiber as transmission medium. Optical fiber communication has become the main means of information transmission and the cornerstone of "information highway" because of its long transmission distance, large information capacity and high communication quality. Optical fiber testing technology is the most extensive and basic special technology in the field of optical fiber applications. OTDR is the main instrument in the field of optical fiber testing technology. It is widely used in the maintenance and construction of optical fiber lines. It can measure the length of optical fiber, transmission attenuation of optical fiber, joint attenuation and fault location. OTDR has the advantages of short test time, fast test speed and high test accuracy.1. Two basic formulas supporting OTDR TechnologyOTDR (optical time domain reflectometer) is a high-tech and high-precision photoelectric integrated instrument made by using Rayleigh scattering and Fresnel reflection when optical pulse is transmitted in optical fiber. The semiconductor light source (LED or LD) outputs light pulses modulated by the driving circuit, which are injected into the tested optical cable line through the directional optical coupler and movable connector to become incident light pulses.When the incident light pulse is transmitted in the line, Rayleigh scattered light and Fresnel reflected light will be generated along the way. Most of the Rayleigh scattered light will be refracted into the cladding and attenuated. The back Rayleigh scattered light opposite to the propagation direction of the light pulse will be transmitted to the light inlet port of the line along the optical fiber, and will be transmitted to the photodetector through directional coupling shunt and converted into electrical signals, After low-noise amplification and digital averaging, the processed electrical signal is scanned synchronously with the trigger signal emitted from the back of the light source and becomes a reflected light pulse on the oscilloscope.The returned useful information is measured by the OTDR detector, and they are regarded as time or curve segments at different positions in the measured optical fiber. According to the time from transmitting signal to returning signal, and then determine the speed of light in quartz material, the distance (fiber length) l (unit: m) can be calculated, as shown in formula (1).In formula (1), n is the average refractive index and â–³ t is the transmission delay. The attenuation a (unit: dB / km) can be calculated by using the power level corresponding to the incident light pulse and the reflected light pulse and the length of the measured optical fiber, as shown in formula (2):2. Five parameter settings to ensure OTDR accuracy2.1 test wavelength selectionSince OTDR serves optical fiber communication, the test wavelength shall be selected before optical fiber test, and only 1310 nm or 1550 nm shall be selected for single-mode optical fiber. Since the influence of 1550 nm wavelength on the bending loss of optical fiber is much more sensitive than 1310 nm wavelength, 1550 nm wavelength is generally used to test the whole process optical fiber backscattering signal curve of an optical cable or an optical fiber transmission link, whether it is optical cable line construction, optical cable line maintenance or experiment and teaching.The shapes of the test curves at 1310nm and 1550nm are the same, and the measured fiber connector loss values are basically the same. If no problem is found in the 1550 nm wavelength test, the 1310 nm wavelength test is certainly no problem.If the 1550 nm wavelength is selected for testing, it is easy to find out whether there is excessive bending in the whole process of the optical fiber. If a large loss step is found somewhere on the curve, retest with 1310 nm wavelength. If the loss step disappears at 1310 nm wavelength, it indicates that there is excessive bending at this place, which needs to be further found and eliminated. If the loss step is also large at 1310 nm wavelength, there may be other problems in the optical fiber, which need to be found and eliminated. In the test of single-mode optical fiber line, 1550 nm wavelength should be selected as far as possible, so the test effect will be better.2.2 optical fiber refractive index selectionThe refractive index of the single-mode optical fiber used now is basically in the range of 1.4600 1.4800, which should be accurately selected according to the actual value provided by the optical cable or optical fiber manufacturer. For G.652 single-mode fiber, if 1310 nm wavelength is used in actual test, the refractive index is generally 1.4680; If 1550 nm wavelength is used, the refractive index is generally 1.468 5. Incorrect selection of refractive index will affect the test length.In equation (1), if the refractive index error is 0.001, an error of about 35 m will be generated in the relay section of 50000 M. Small mistakes in optical cable maintenance and troubleshooting will bring obvious errors, which must be paid enough attention during testing.2.3 selection of test pulse widthIf the set light pulse width is too wide, strong Fresnel reflection will be generated, which will increase the blind area. Although the narrow test light pulse has a small blind area, the test light pulse is too narrow, the power must be too weak, the corresponding backscattering signal is also weak, the backscattering signal curve will fluctuate, and the test error is large. The set optical pulse width shall not only ensure that there is no strong blind spot effect, but also ensure that the backscattering signal curve has sufficient resolution and can see each point along the optical fiber.Generally, an appropriate test pulse width is selected according to the length of the measured optical fiber, and an optimal value is determined after one or two trials. When the distance of the measured optical fiber is short (less than 5000 m), the blind area can be less than 10 m; When the distance of the measured optical fiber is long (less than 50000 m), the blind area can be less than 200 m; When the distance of the measured optical fiber is very long (less than 2500 000 m), the blind area can be up to more than 2000 m.In the single disk test, the blind area can be less than 10 m by properly selecting the optical pulse width (50 nm). If the average value is obtained through two-way test or multiple tests, the impact of blind area will be less.2.4 selection of test rangeThe range of OTDR refers to the maximum distance that the abscissa of OTDR can reach. During the test, the measuring range shall be selected according to the length of the measured optical fiber, and it is better that the measuring range is 1.5 times the length of the measured optical fiber. If the range selection is too small, it can not be seen comprehensively on the display screen of the optical time domain reflectometer; When the range selection is too large, the abscissa compression on the display screen of the optical time domain reflectometer can not be seen clearly.According to the practical experience of engineers and technicians, the selection of test range can make the backscatter curve account for about 70% of the OTDR display screen, whether it is length test or loss test, better direct viewing effect and accurate test results can be obtained.In the test of optical fiber communication system, the link length is hundreds to thousands of kilometers, the relay section length is 40 60 km, and the single optical cable length is 2 4km. Good test results can be obtained by selecting the range of OTDR.2.5 selection of averaging timeBecause the backscattered light signal is extremely weak, the method of multiple statistical average is generally used to improve the signal-to-noise ratio. OTDR test curve samples the reflected signal after each output pulse, and averages the multiple samples to eliminate random events. The longer the averaging time is, the closer the noise level is to the minimum value, and the larger the dynamic range is. The dynamic range obtained with an average time of 3 min is 0.8 dB higher than that obtained with an average time of 1 min.Generally speaking, the longer the averaging time, the higher the test accuracy. In order to improve the test speed and shorten the overall test time, the test time can be selected within 0.5 3 min.In the connection test of optical fiber communication, satisfactory results can be obtained by selecting 1.5 min (90 s).3 three common methods of OTDR testingWhen OTDR tests optical cables and optical fibers, the test occasions include factory test of optical cables and optical fibers, construction test of optical cables and optical fibers, maintenance test and regular test of optical cables and optical fibers. The test connection of OTDR is shown in Figure 1.The test connection method is: OTDR - optical fiber connector - the first optical cable - the second optical cable - the nth optical cable, and the terminal is not connected to any equipment. According to the actual test work, there are three main methods:3.1 OTDR backward test methodThis method is mainly used to monitor the optical cable connection. The optical cable connection must be equipped with a special optical fiber fusion machine and optical time domain reflectometer (OTDR). After welding a fiber core, the welding machine will generally give the estimated attenuation value of this contact. This method of testing has three advantages:(1) OTDR is fixed, omitting the vehicles and a lot of manpower and material resources required for instrument transfer;(2) The test point is selected in the place where there is mains power without gasoline generator;(3) The test points are fixed to reduce the stripping of optical cables.At the same time, this method also has two disadvantages:(1) Due to distance and terrain constraints, it is sometimes impossible to ensure smooth communication;(2) With the continuous increase of connection distance, the test range and accuracy of OTDR are limited.At present, there are generally three methods to solve these problems:â‘ The use of mobile phones in the city and suburbs can keep the testers and successors in touch at any time, facilitate organization and coordination, and improve work efficiency.â‘¡ Contact by telephone. Make sure to connect one optical fiber (such as blue optical fiber unit and red optical fiber) to the optical telephone as the connecting line. Of course, the last optical fiber used for communication cannot be monitored because it cannot be contacted during fusion and fiber winding. Even so, the possibility of problems will be greatly reduced (if it is a 24 core optical cable, the probability of problems will be reduced to less than 1 / 24 of the original).â‘¢ When the optical cable connection reaches a relay distance, the OTDR moves forward.The test practice shows that these monitoring methods are effective to ensure quality and reduce rework.3.2 OTDR forward one-way test methodOTDR is tested at the first joint point in the optical fiber connection direction, and construction vehicles are used to transfer the test instruments and testers in advance. Using this method for monitoring, the test point and connection point always have only one disc of optical cable length, the attenuation accuracy of the test joint is high, and it is convenient for communication. At present, the length of one optical cable is about 2 3 km. In general terrain, communication can be ensured by using walkie talkie. If the optical cable has a corrugated steel strip protective layer, you can also use the magnet telephone to contact.The disadvantages of this test method are also obvious. Moving OTDR to each test point is labor-consuming and time-consuming, which is not conducive to the protection of instruments; The test points are also limited by the terrain, especially when the line is far away from the highway and the terrain is complex. Portable OTDR is selected for monitoring. The short-range test does not require high dynamic range of the instrument, and the small 0tdr has small volume, light weight and convenient movement, which can greatly reduce the workload of testers and improve the test speed and work efficiency.3.3 OTDR forward two-way test methodThe OTDR position is still the same as the "forward one-way" monitoring, but two optical fibers are respectively short circuited at the beginning of the connection direction to form a loop. This method can not only meet the optical fiber test of relay section, but also monitor the optical fiber connection. When testing the optical fiber in the relay section, the incident light pulse, reflected light pulse, joint point, fracture point, fault point and attenuation distribution curve can be clearly seen on the display screen of the optical time domain reflectometer. The OTDR test event type and display are shown in Figure 2, which can provide convenience for optical cable maintenance.When monitoring optical fiber connection, due to the increase of loopback point, the bidirectional value of connection loss can be measured on OTDR. The advantage of this method is that it can accurately evaluate the quality of the joint.Due to the test principle and optical fiber structure, there will be false gain and false large attenuation in one-way monitoring with OTDR. For an optical fiber connector, the mathematical average of attenuation values in two directions can accurately reflect its real attenuation value. For example, the attenuation of a connector measured from a to B is 0.16 dB, and that measured from B to a is -0.12 dB. In fact, the attenuation of this connector is [0.16 (- 0.12)] / 2 = 0.02 dB.4 ConclusionAs the main instrument of optical fiber communication,
Tips to Clean Stainless Fiber Optical Tester
Tips to Clean Stainless Fiber Optical Tester
Dry plug cleaners (also known as click cartridges) can be cleaned by slight contamination. However, connectors can be charged during drying, and this method can attract additional impurities.Laboratory tests have shown the attraction of metal powders to optical connectors that are electrically charged after being wiped with the dry tissue of a typical fiberglass cleaner cassette style (Berdinskikh, Fisenko, Daniel, Bragg & Phillips, 2003 ). Dry wiping creates a static charge which can attract contaminants onto the plug after cleaning (IEC TR 62627-01, 2010, p. Similar contamination can also occur in the practice of front surfaces on non-cleaned surfaces that are cleaned during the dry cleaning process.The static charge of dry cleaning can be reduced by exposing cleaned connectors and the end face during the cleaning process to deionized air for 5-10 seconds. Dry cleaning, however, hardens the contamination and requires additional pressure from the operator, which can lead to surface scratches that can cause permanent damage to the end face.The only way you can guarantee that your connectors will do their job is to thoroughly inspect and clean them. Once the fiber optic connectors are cleaned, it is best to reconnect them and cover them with a cap to ensure that they are not dirty.Owners of fiber networks should explore their options for cleaning fiber connections and choose the method that best suits their business. It is essential to inspect and, if necessary, clean the fiber optic connections before mating.Choose from cleaners for many types of appliances such as SC, ST, FC, LC, and Mu (clinking cloths) designed for multiple applications. This one-put-cleaner is designed to clean male connectors, female bulkheads, adapters, fiber optic patches, cables and testing equipment. It also cleans the end faces of the ferrule to remove dust, oil and other impurities from scratches on the end faces.The F offers several types of slide-in cleaners including a push-in cleaner for LC and Mu (1.25 mm ferrule), a push-in cleaner for SC, ST, FC and LSH (2.5 mm ferrule) and a push-in cleaner for MTP and MPO connectors.The easiest way to clean your test port is to use Quick Clean (tm) Cleaner. A handheld connector removes dirt, dust, oil, grease and dirt from the front of the connector.The CKF Fiber Optic Cleaning Kit includes our TravelSafe Fiber Connector Cleaner (FCS3), Plug Cleaning Pen (MCC25), Lint-Free Wipe (LFW90) and Hand Connector Cleaner (FCC 7020) and Replacement Roll (FCC 7021). Many products use the procedures shown in the Fiber Cleaning Techniques tab. The following hints are helpful to pay attention when cleaning connectors.IPA alcohol can be used to clean fiber optic connectors, but is not the best solution to clean them. An optical cleaning fluid to clean the fiber optic connection is the better choice. It will help to clean the connectors without the risk of damage.Calculating a force of 2.2lbs per 200mm will bring you to 45,000 psi, so contaminated migration in dusty environments should not be a problem. You do not have to worry about dust residues contaminating migration, as there is no physical contact with the plug and it is cleaned during the mating process. The best way to avoid the risk of contaminated migration is to clean the uncovered plug and cable assembly with a wipe and then glue the cleaner to the plug that is in the adapter.Several fibers are installed in its own sheath to separate from the buffer tube, and these fibers are surrounded by a common sheath. Scattering light causes a change in the refractive index of the fiber used, and the Bragg grid distributes the Bragg reflector. Coherent fibers are bundles of fibres arranged in the same way at the end of the transmitted images and are used to protect the fiber optic cable from physical damage by mechanical insulation. See macro bends for a small radius around the fiber optic cable so that it can be bent without excessive attenuation or breakage. This type of fiber optic connector consists of two tapered, ferrule-shaped receptacles that work in both directions.Please contact me if you need additional photos or information about this high-end upgrade. Silver Bird Bangle Bracelet sterling silver square hammer bangle with cute market of things that do not fit into your handbag, spare shoes or your tablet. Archive quality dry ink, inch cut surface, stainless steel cheese tool with rubber wood handle including fork tip, cheese knife, VFL visual troubleshooting, 20MW fiber optic cable tester, 650nm CatV, custom longboard, croozerboard, etc.Contamination of the fibre-optic end surfaces remains the main cause of problems with the fibre-optic network. Look at your face and follow the golden rule of inspecting, cleaning and re-inspecting. After cleaning, do not forget to inspect the front face. It only takes one second for a network to have Fi-7000 FiberInspector Pro certified front face according to IEC 61300 3: 35 standard.A digital microscope is a normal hand-held microscope to which a camera is added. The usual magnification range is 100x to 800x, but the most popular magnifications are 400x and 200x for this task. The latter is a better choice because you can see more of the area being inspected.
Cable Tracker to Find the Best Deals
Cable Tracker to Find the Best Deals
The introduction of cable trackerThis is a long introduction that answers most of the questions people may have when they read this article.Tips for cable trackerWhen you want to keep track of your cable channel preferences, here are some tips for you.How to use cable tracker?When looking for a new cable company you need to know how to choose the right one. You could search for cable suppliers in the market or take a survey that is offered by companies that offer this service. But if you want to be sure that you are getting the best results, then it is better to use a cable tracker.The specifications of cable trackerIn the past, the cable industry used to have a lot of different types of cables. Each type needed to be individually certified and each one had its specific use. Today, there are just a few basic standards that cover most of them. Computer programmers are able to create new cable types that are compatible with existing ones, but they cannot do so for all those standards. This is because different standards have different constraints and the programmers need to be aware of these if they want to create something useful for their clients.The product instructions of cable trackerThe content of cable trackers is filled with instructions and warnings. These instructions are confusing and some people may not know what they should do when using the product. The greatest challenge in writing for a cable tracker is to simplify the instructions or even remove them altogether.The application of cable trackerThe application of TV/cable tracker is an important tool to help marketers understand their audience, target them, and then convert them.
Location Method of High Resistance Damage in Power Cable Line
Location Method of High Resistance Damage in Power Cable Line
In order to preliminarily determine the high resistance damage in power cable lines, the combination method of high voltage reflection method is usually used: pulse arc method and vibration discharge method. In this paper, we will consider the main ideas embedded in these methods and how they work. In addition, we will discuss the equipment to implement these two methods. 1、 Pulse arc method (ARM) is used to determine high resistance damage. The main idea of pulse arc method is to use a special high-voltage pulse generator. For example, in the arc cable generator of power cable, oil first creates conditions for the generation of high resistance defects and causes short-term arc (breakdown). According to the magnitude of the leakage current and the power of the current source, use one of two ways for the generator to act on the cable line: 1. Smoothly charge KL's own capacity (cable) from the generator current source until breakdown occurs. This method can be used if the leakage is so small that the power supply of the high voltage pulse generator is sufficient to charge before breakdown. For defects with serious leakage, this method is not applicable. 2. Charge the built-in capacitor of the generator to the required voltage (not exceeding the test standard), and then discharge the cable instantaneously. In this case, the high-voltage pulse propagates in the cable, which will lead to failure when it reaches the location of the defect. This method can be used to search for defects on cable lines with serious leakage. In both cases, the use of inductors integrated in the generator will delay the arc combustion time. The current pulse from the breakdown (propagating from the defect to the input of the generator) triggers a synchronous circuit that starts the low-voltage sounding through the cable fault locator (also known as the cable fault tester). The physical characteristics of the arc have low resistance, and the detection pulse of the cable fault locator is also reflected from medium and low impedance defects (short circuit). Advantages of pulsed arc method the pulsed arc method (ARM) for determining high resistance damage has several advantages. This is a non-destructive method, because unlike combustion, the impact of high voltage on the cable is short. Unlike combustion, this method will not reduce the cable parameters as a whole, and will not cause new damage where the insulation resistance is still within the normal range. Arm is actually a high-precision method, because the measurement is actually carried out by pulse method. 2、 The vibration discharge method (ice / attenuation) should deal with high resistance damage. The vibration discharge method is used to find damage on a long cable line, or when the pulse damping of the underground cable fault locator is too large for some reason to apply the pulse arc method. The vibratory discharge method allows you to locate most faults that can be detected using the pulsed arc method, but usually reduces accuracy. It should be noted here that the function of the cable is not displayed when operating by the vibration discharge method. Current oscillation discharge method (current fluctuation method, ice) when the wave current method is used, the oscillation circuit is formed by the system: capacitor on the source side - Cable - low transition resistance (or arc) at the defective part. When the method of vibration discharge through current is used, according to the leakage current value and the power of the current source, here, as with the pulse arc method, one of the two methods of exposing the cable to the generator is used: 1. Smoothly charge the CL capacitor from the generator current source until breakdown occurs. This method can be used if the leakage is so small that the power of the current source is sufficient to charge before breakdown. For defects with serious leakage, this method is not applicable. 2. Charge the built-in capacitor of the generator to the required voltage (not exceeding the test standard), and then discharge the cable instantaneously. In this case, the high-voltage pulse propagates in the and reaches the defective part, resulting in breakdown or large discharge current. This method can be used to search for serious defects. The discharge current pulse returned to the source will charge its capacitor, which in turn. The wave reaching the defect may cause a discharge in it again (in this case, its polarity will change), or if a second discharge does not occur, it will reflect with the same polarity and repeat the process again until all the energy of the initial pulse disappears. These vibrations are displayed on the screen of the cable fault locator connected to the cable through the inductive sensor.
Basic Principle of Live Cable Identification Instrument
Basic Principle of Live Cable Identification Instrument
As the running live cable is not allowed to damage any grounding wire and other connecting wires, nor is it allowed to directly add the output signal of the live cable identifier transmitter to the cable phase line with high voltage. Two difficult problems need to be solved for live cable identification. One is how to couple the cable identification signal to the cable; Second, the coupled signal is generally small, and the operating cable may have 50Hz power frequency electromagnetic interference composed of 50Hz unbalanced current, induced 50Hz interference current, cable distributed capacitance current, etc. the high-sensitivity receiving caliper has the problem of how to resist 50Hz power frequency interference. The charged cable identification instrument developed by US adopts single chip microcomputer coding and decoding technology and PSK technology widely used in the field of communication. The phase coded signal with an average value of 0 is transmitted on the transmitting caliper, and the single chip microcomputer in the receiving caliper performs phase identification after filtering the received signal by hardware and software. When the receiving caliper cards the cable according to the current direction, the identified cable ammeter deviates to the right, accompanied by audible and visual indication. The current direction of other cables is opposite to that of the identified cable, and the ammeter pointer deviates to the left. No audible and visual indication. This reflects the uniqueness of the identified target cable. It is easy to distinguish the identified cable from multiple cables. In addition, since the signal current strength on the identified cable is the same throughout the line, the electromagnetic signal strength received by the receiving caliper along the cable is the same. In principle, the identified cable is not limited by the length of the identified cable. 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 high voltage cable fault tester, cable fault tester, underground 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!
no data
no data
Contact Us
Leave a message
We welcome custom designs and ideas and is able to cater to the specific requirements. for more information, please visit the website or contact us directly with questions or inquiries.
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.
no data
Contact Person:Lory Liu
Contact Us

+86-0755-27530990

If you have any question, please contact Lorry via

wire@noyafa.com

Add:Wanjing Business Center, #2506 Xinyu Road, Xinqiao, Baoan District, Shenzhen, China

Copyright © 2021 NOYAFA | Sitemap 

chat online
Please message us and we ensure to respond ASAP, what product you intrested in?