Guide to Buy Ncv Tester in NOYAFA

Guide to Buy Ncv Tester in NOYAFA

2021-11-03
NOYAFA
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SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED strives to be the recognized manufacturer in providing the high quality ncv tester. We keep trying every new way of improving the capacity of manufacturing. We are continuously reviewing our production process to enhance the quality of the product as much as possible; we are achieving continuous improvement in the effectiveness of the quality management system.NOYAFA is deeply trusted as a responsible manufacturer by customers at home and abroad. We maintain cooperative relationship with international brands and win their praise for delivering high-quality products and all-around services. Customers also hold positive opinions about our products. They would like to repurchase the products for a consecutive user experience. The products have successfully occupied the global market.Customer satisfaction is always the first at Best Cable Tester Supplier in China _ Noyafa. Customers can find superior customizing ncv tester and other products with various styles and professional after-sales service.
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5 Things You Need to Understand About Cable Length Testers
5 Things You Need to Understand About Cable Length Testers
WireMap - WireMap tests to ensure that the cables are connected from pin to pin according to the standard of connection. Testing the wiring of a UTP / Cat 5E / 6 / 6A cable with the full scope of the cable to check its performance is very important.This term is used by manufacturers and testers to mean that the cable is tested to pass one of the CAT 5E, 6 or 6A certifications, and the tester tests the standards set in the performance parameters.These are the standards that the testers use for those who want to check the quality of their cables. Professional network testers are used in commercial environments and are used to certify that professional cable installers are working properly. Certification audits are a way for installers to ensure that the cables that go into the network meet TIA and ISO requirements.These qualification testers meet the needs of network technicians who install new cabling not only but also to troubleshoot network operations. Professional testers have more skills when it comes to troubleshooting cables while maintaining high accuracy. Qualification testers conduct tests to determine whether existing cabling in a connection meets the requirements for fast Ethernet, 100base-TX, VoIP (VoIP) and Gigabit Ethernet.You can test the cable performance of your home network (telephone cable, fiber optic cable, etc.). With the help of a qualification tester. Test your network cables as best you can with a network cable tester to get the job done. By connecting both ends of the cable, the tester takes on the task of making an accurate measurement for you of whether your cable is working or not.If you make your own cables, such as installing our own RJ45 BNC ends, we want to ensure that the cables are properly wired. With patch cables of Cat 6 and 6A, which are more than 20m long, we test according to the 20m standard, because we do not have a program that limits the number of longest cables. If you need a transfer speed of 1 Gbit / s, check that the cable has the properties to support it.If we attach the cables separately, the cable tester will find out where the cables come from and he will show me where pins 1, 2, 3.4 and 5 are so that they are wired correctly. If there is a crossover cable, the pins 4 and 5 are not correctly wired : 1 / 3 is swapped, 2 / 6 is swapped and 2 / 6 is at the other end of swap 1 / 3.The purpose of one of these tests is to find out if the cable is within the ballpark length of the max switch test, and if so, fine. If I carry a full-length cable and the switch says it is 310, it is a stroke of luck and I read 347 as the specification. When I used the original simple tester, I noticed something about it, and it told us that we had a bad cable.Since the LAN's transmit high-speed signals through the cable, the attenuation of the cable is a variable frequency signal, and certification testers must test at multiple frequency lines at multiple frequencies as specified in the specification 568. To do this, the tester must have at least one of them calculated and recorded at the end of the cables (the transmitting and the receiving).The specification limits the return losses not only to the length of the connecting cable, but also to the way in which the same pass / fail limit applies to the length of the cable. If the short distance change is too small a limit to be a stroke of luck, I recommend that we test the limit by setting up a shorter cable to be tested. In the case of longer cables, the limitation to crosstalk is loosened in addition to the different length.Test tools do not provide bandwidth readiness information for high-speed data communication. Verification tools should include additional features such as a time domain reflection (TDR) to determine the length of cable and the distance to interrupt a short circuit. The device should export the test results to a printable format with the required documentation.Ethernet cable testers, whether they call themselves testers or testers, do not need to measure the entire range of ANSI or TIA performance indicators required to accelerate and certify an Ethernet cable. Some failed ones generate quasi-certification reports with test field parameters that require the use of a digital signal to perform the test. They have less insight into the cable length without warning of potential problems, such as edge termination, which can cause problems reaching 10 gigabits.Your cable test reports are generated by our Fluke DTX-1800 cable tester and associated Fluke Linkware software. In order to explain how they are created and the meaning of the values and diagrams shown in them, we need to go into the specifications a little.A cable tester is an electronic device used to check the electrical connection between a signal cable and other wires in a module. The most basic cable testers are through testers that check for the presence of a conductive path between the ends of a cable and check the correct cable connectors on the cable. More advanced cable testers measure cable signal transmission characteristics such as resistance, signal attenuation, noise and interference.A network cable tester is a revolutionary device designed to test cable connections for functionality and reliability. It is a must for network technicians, network testers, cable testers and other related work to this area. A simple wire harness is a battery-powered portable instrument that draws electricity from one or more voltage indicators in a switching / scanning arrangement and checks several conductors simultaneously.Nevertheless, network and cable testers in this industry are essential for homeowners because they can help avoid network problems and maintain home cable connections. A reliable cable and network tester is able to fix problems and help you identify cable problems and connection problems.In this post, Comptia Network Instructor Rick Trader shows some of the most popular cable testers and how to use them in a network configuration. Now that we have covered cable connectors, let's take a look at the tools we can use to test our various cables in our environment.
Fault Location of Power Cable and Fault Location of High Resistance Cable
Fault Location of Power Cable and Fault Location of High Resistance Cable
Power cable fault and high resistance cable fault are common problems of cable fault, and also belong to medium and high frequency problems of cable fault. Below, the author analyzes and writes the methods of cable fault location of these two cables, hoping to have a certain reference for everyone in case of cable fault. Fault location method of power cable: Aiming at the problem that it is more difficult to determine the fault location of buried power cable than overhead line, this paper selects a representative example of fault location process of 10 kV cable in case of high resistance fault, and introduces the method of locating and locating the fault point by using secondary pulse method according to the fault nature. For the high resistance fault during cable operation, first consult the relevant data of the cable and master the detailed information of the cable; Use multimeter and insulation resistance meter to judge the cable fault type, and determine the corresponding test method according to the fault type; Use the fault tester to test the length of the cable, check whether the test results are consistent with the data, and preliminarily determine the distance of the fault point; Finally, the secondary pulse method is used to accurately locate the fault point, find out the fault point, peel off the cable and find out the cause of the cable fault, so as to take corresponding preventive measures. This method is easy to master, especially for short-distance faults, the test waveform is easier to analyze, and the fault distance can be determined quickly, which makes the cable test more efficient and the fixed-point positioning time shorter. Power cable faults are complex and diverse, which can be divided into open faults and closed faults according to fault surface phenomena; According to the grounding phenomenon, it is divided into grounding fault, phase to phase fault and mixed fault; According to the fault location, it is divided into joint fault and cable body fault; According to the nature of resistance, it is divided into broken line fault, mixed line fault and mixed fault. Among them, mixed line fault is divided into low resistance fault, high resistance fault and flashover fault. 1. Fault detection methods for different cable faults, the common detection methods include low voltage pulse method, pulse current method, secondary pulse method, bridge method, pulse voltage method, etc. [3]. This paper only introduces the three commonly used detection methods. 2. Low voltage pulse method low voltage pulse method is suitable for detecting low resistance fault (short circuit fault with fault resistance less than 200 & omega;) and open circuit fault. It can also be used to measure the length of cable and the propagation speed of electromagnetic wave in cable, and distinguish the middle head, T-joint and terminal head of cable. 3. Pulse current method pulse current method generally includes impulse flash method and direct flash method. The linear current coupler is used to collect the current traveling wave signal in the cable and generate the fault test waveform, so as to judge the fault condition and measure the distance between fault points through the waveform. The direct flash method is used to detect flashover breakdown faults, that is, the resistance at the fault point is very high, and flashover breakdown faults will occur when the voltage is raised to a certain value with high-voltage test equipment. The impulse flashover method is also suitable for testing most flashover faults. Because the waveform of the direct flashover method is relatively simple and it is easy to obtain more accurate results, the direct flashover method should be used as much as possible. 4. Secondary pulse method with the cooperation of high voltage signal generator and secondary pulse signal coupler, the secondary pulse method can be used to measure the fault distance of high resistance and flashover faults. The waveform measured by this method is simpler and easy to identify.
Follow the Cable Fault Tester Supplier to Deeply Understand the Cable
Follow the Cable Fault Tester Supplier to Deeply Understand the Cable
The lead of the motor is not only related to the rated voltage of the motor and the open circuit voltage of the rotor of the wound rotor motor, but also directly related to the current carried by the motor winding and the actual service condition of the motor. The selection of lead specifications should first be determined according to the withstand voltage value. The cable has a withstand voltage range. This rule must be followed when selecting. Below, the supplier of cable fault tester will take you to have an in-depth understanding of cables. Select the lead of corresponding voltage level according to the voltage requirements of the motor. The voltage level of the lead shall not be lower than the rated voltage of the motor winding. For example, for 10kV and 380V motors of high-voltage motors, the voltage value of the cable is very different. In addition, besides the voltage and current requirements, the insulation grade of the cable of the motor lead is also very important. According to the insulation grades of class B and h, the insulation heat resistance of the motor is different, and the material of the insulation material is also different. It must be noted that if the class B lead is used in the class H insulated motor, the possibility of lead damage and ground fault is very high. The cable fault tester supplier interprets the provisions of motor lead in the national standard: 1. Determine its necessity according to needs. According to the standard, if the motor has a power cord, or in order to facilitate connection with other equipment, provide a guide cord extending out of the motor base and a plug connecting the power supply line if necessary, the cord and plug shall comply with the provisions of the relevant standards of the product or the relevant standards of such equipment. Especially for small motors, winding wires can be used to connect with equipment or terminal blocks, but for motors that must undergo relevant insulation treatment, soft wiring must be adopted, and the provisions of terminal blocks must be added. Unless grounding is not required, these flexible wire bundles must have grounding conductors. Leads (including ends) require different colors and markings. Most motor manufacturers use three-color leads for three-phase motors, and some motor manufacturers use labels to distinguish them. However, for grounding wires, they are adopted according to standards. 2. Voltage and current requirements. The standard stipulates that the rated voltage of the guide flexible cable must be under the maximum working voltage of the motor, and its load flow must be at least equal to the load current of the service factor or 125% of the full load rated current, whichever is the larger. The flexible cord insulation shall withstand the working frequency withstand voltage test of the circuit. 3. Protection requirements for leads. In addition, there are measures to eliminate the possible tension, or guide the flexible cable (power cord) not to expose the motor. An insulating protective layer and clamping device are set at the outgoing part of the flexible cable to prevent the external tension from being transmitted to the internal wiring and prevent accidents caused by the rotation and displacement of the flexible cable. 4. Limitations and insulation requirements. In addition to other protective measures, the introduction of flexible cables into the motor shall be prevented. The clamping device for clamping and fixing flexible cables is made of insulating material, made of metal material and requires insulating lining.
The 5 Best Reasons Why You Should Use a Laser Light Power Meter
The 5 Best Reasons Why You Should Use a Laser Light Power Meter
The PM100A power meters console is the analog counterpart to the digital power and energy meters PM100D. It is ideal for use as a pulse laser power meter CW, incoherent optical source power meter (general light power meter), fiber power meter and more. You can also consider one of the laser power meters such as our Pronto series, which gives you power readings of up to 10 kW every 5 seconds with 3% uncertainty.With this information in hand, you might think that you could opt for a laser power meter. The biggest problem is selecting the appropriate sensor for measuring laser light, as most other types of broadband light measure. We recommend that you select your electricity meter so that you can determine which detector meets your needs, not the other way round.This depends on the output current source and the sensitivity of the meter. You need to know how much power and energy density you have to select a sensor that is not damaged. Finding the best sensor for a particular application is not trivial, so we recommend using our Sensor Finder on our website to calculate the best sensors for the measurement conditions you have entered.For example, one of our leading sources has a maximum power of 625 x 125 fibers at 15 dBm. If your instrument uses a power level that is 10 dB higher, it is below the minimum requirement. We propose an optomechanical power meter that counts the number of photons by measuring the displacement of mirrors that push the laser beam and modulate it.After our demonstrations, calculations and analyses, we have come to the conclusion that it is possible for our novel type of power meter to measure laser power with an uncertainty of one percent (1s). This work demonstrates a novel method for measuring laser power with optomechanical systems. The prototype was tested by hanging a 25 mg mirror with an optomechanically coupled oscillator and measured the displacement of the mirror pushed by a modulated laser beam with a Michelson interferometer.The number of photons falling on the continuous wave of the laser can be measured by measuring the mirror shift caused by reflection amplitude modulated by the laser beam. In this area of equilibrium between optical power measurement and small mass measurement, metrological exchange of SI masses is enabled to calibrate optical power and SI of the optical power to calibrate the small mass measurements. Laser power measurements with an uncertainty of less than one percent (1%) are possible.In order to select one, one must know the beam point size and energy distribution; for example, a Gaussian beam has a high density, but is also flatter than other modal beams. Weaponable lasers tend to have large openings or openings that cause the laser beam to propagate, which improves its ability to maintain its intensity over long distances. With a large aperture, a rocket-killer laser beam can be aimed at the moon, and infrared spots of it can be detected from up to 15 miles away on the surface.A typical red laser pointer is about 5 milliwatts, but a good one has such a narrow beam that it hits the moon that it spreads a large part of the surface when it gets there. Observed from an airplane that is 40,000 feet in the air (assuming there are no clouds or smog), the red laser points would be brighter than a quarter of the moon. From the International Space Station it would fade to the brightest star in the night sky, Sirius.A laser pointer (or pen) is a small handheld device that emits a narrow, coherent, powerful, visible light laser beam that is used to highlight something of interest by illuminating it with a small bright spot of colored light (usually a battery or a laser diode). The small width of the laser beam and the low power of a typical laser pointer make it invisible in a clean atmosphere and only show the point where the light hits an opaque surface. In Starman, a dummy launched into space by a Tesla car from Elon Musk's company Tesla Space, the red laser pointer dimmed without anyone noticing.Green laser pointers [5] are more complex than conventional red laser pointers because laser diodes are not available in all wavelength ranges. A powerful green laser visible by scattering radiation from air molecules is visible at night and this type of pointer is used by astronomers to point out stars and constellations. Laser pointers can be purchased online, and powerful high-performance pointers are also commercially available.A second concern arose in 2010, when four researchers from the National Institute of Standards and Technology (NIST) found that commercially manufactured green laser pointers emit harmful infrared radiation. Laser pointers generate a colliding infrared beam, which is converted into green light by a special crystal. Laser intensity and distance are higher than that of an energy-rich ordinary light source, which propagates its emissions at a wide angle.We present a small power meter to measure the radiation pressure of a high-power laser. A beam of light of 5 arcminutes width from the surface of the moon has a beam of lux (compared to 130,000 lux from the sun). In comparison, the Moon illuminates the Earth's surface with lux illumination, which means that our laser is too weak to be seen from Earth, but when you are on the Moon, the laser light is weaker than the moonlight above us on Earth.The incident laser power is determined by interferometric measurements with displacement of a mirror with a high reflectivity of 20 mm diameter mounted in the middle of a two-element spiral bend. Because the small power meter that detects radiation pressure of the incident high-powered laser interacts with the laser small, packaged and non-destructive, it is well suited to perform robust real-time power measurements with high precision in laser-based manufacturing environments.
This Paper Briefly Introduces the Fault Detection Method of High Voltage Cable
This Paper Briefly Introduces the Fault Detection Method of High Voltage Cable
The discovery and fixed-point work of cable faults has always been a big problem in the electrical measurement industry, mainly because most cables are deeply buried underground, the laying distance ranges from a few meters to a few kilometers, and the on-site environment is complex. In addition to the high quality requirements for cable fault test equipment, the comprehensive quality of technicians is also very strict. There are three common types of cable faults: low resistance fault, high resistance short circuit grounding fault and flashover fault. For different types of cable faults, the fault point detection methods are also very different. The following is a brief introduction to the fault detection method of high-voltage cable. There are two kinds of traditional fault detection methods for high voltage cables: bridge method and pulse method. 1、 Electric bridge method is a classical method for ranging power cables. This method is relatively simple, but it needs to know the data such as cable length in advance, and it is only suitable for low resistance and short circuit faults. However, in actual operation, faults are often high resistance and flashover faults. Due to the high fault resistance, the bridge current is very small, so it is difficult for general sensitivity instruments to detect. 2、 Pulse method 1. Pulse current method this method is safe, reliable and simple. The method is to break down the cable fault point with high voltage, collect and record the current traveling wave signal generated by the fault click through with the instrument, and calculate the fault distance according to the round trip time between the current traveling wave signal at the measuring end and the fault point. In this method, the pulse current is coupled with a transformer, and the waveform is simple and safe. This method also includes direct flash method and impulse flash method. Different from the pulse voltage method, which uses resistance and capacitor voltage dividers for voltage sampling, the pulse current method uses linear current couplers placed parallel to the low-voltage geodesic and has no direct electrical connection with the high-voltage circuit. It is particularly safe and convenient for recording instruments and operators. So people usually use this method. 2. Pulse voltage method this method can be used to measure high resistance 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. An important advantage of pulse voltage method is that it does not have to burn through high resistance and flashover faults. It directly uses the instantaneous pulse signal generated by fault breakdown. The test speed is fast and the measurement process is simplified. 3. For low resistance and open circuit faults, the pulse echo method uses the low-voltage pulse reflection method to measure cable faults. Compared with the above bridge method, it is simple and direct. It only needs to observe the time difference between the reflection and transmission pulses at the fault point to locate the fault. During the test, a low-voltage pulse is injected into the cable. When the pulse propagates to the fault point, it will be reflected, and the pulse is reflected and sent back to the measuring point. The time difference between the transmitted and reflected pulses is recorded by the instrument, and the distance of the fault point can be calculated only by knowing the pulse propagation speed. This method is simple and intuitive. It does not need to know the original data such as cable length. It can also identify the position of cable joint and branch point according to the reflected waveform.
Introduction to the Use of Cable Fault Finder
Introduction to the Use of Cable Fault Finder
Due to the cable fault caused by cable laying, the location of cable fault varies with the cable laying mode, and the location increases gradually. Among them, the laying side in bridges, tunnels and trenches is relatively simple, and the direct burial method is difficult to locate. When the nature of the fault is simple, a special cable fault finder is used, and it takes 4-5 days or even longer to locate the equipment within dozens of minutes. When using echo method to locate cable fault, sometimes by transferring fault phase and wiring mode, complex fault will often be transformed into simple fault to quickly determine fault location. It is of great significance for the power supply user department to win time for the emergency repair of on-site lines. Low voltage power cables are generally multi-core cables. When faults occur in continuous use after laying, they generally show two core and multi-core phase to phase or phase to ground short circuit faults. Sometimes when it is detected that the fault waveform collected by one core is not ideal, it can be considered to convert the wiring to other fault cores for fault waveform detection, which often has unexpected effects, The collected and detected waveforms will become more typical and regular, so the specific location of cable fault point can be determined quickly. During the long-term on-site measurement of cable customers, it is found that the fault of small section copper core directly buried power cable (35mm2 and below) and aluminum core cable may be accompanied by short circuit and wire breakage at the same time. During on-site detection, converting short-circuit fault into broken line fault measurement according to the different fault nature of each fault core will often double everything with half the effort. For the medium voltage direct buried power cable with extruded armor as the inner lining, the fault is mostly caused by external mechanical damage. When the insulation core fails, the inner lining may have been damaged. When the cable insulation fault is special and it is difficult to collect the waveform with a professional cable fault tester, the acoustic method can be considered, When the high voltage pulse is directly applied between the steel strip and copper shielding layer of the cable, it will often be fixed quickly. Using the cable fault finder in the field measurement process, we also found that when using the acoustic method to locate the fault of low-voltage cable. When the high-voltage line and ground wire are connected between the bad phase and the metal shield or armor, due to the low resistance metal connection state of the insulation resistance of the two, the sound is very small, so the probe can not be used to listen to the fixed point, and the effect is not ideal. Through the actual listening side on the site for many times, it is found that the distance between the discharge ball gaps is appropriately increased. At the same time, if the high voltage and grounding wire are connected between the two faulty phases, the discharge sound will become louder and the fault point will be determined quickly.
How to Quickly Locate Cable Faults
How to Quickly Locate Cable Faults
With the different cable laying methods, the difficulty of cable fault location is gradually increasing. Among them, the positioning and search of bridge, tunnel and open laying in ditch is relatively simple, and the positioning and search of direct burial is the most difficult. When the fault nature is simple, the special cable fault location equipment can be used to locate the fault within dozens of minutes. When the fault is special, it often takes 4-5 days or even longer to locate the fault. How to quickly locate cable faults? When using echo method for cable fault location, sometimes by transferring the fault phase and wiring mode, complex faults are often transformed into simple faults, and the fault location is quickly determined to win time for the emergency repair of on-site lines, which is of great significance to the power supply user department. Low voltage power cables are generally multi-core cables. After laying and continuous use, they generally show two core and multi-core phase to phase or phase to ground short circuit faults. Sometimes, when it is detected that the fault waveform collected by a core is not ideal, it can be considered to convert the wiring to other fault cores for fault waveform detection, which often has unexpected effects. The collected and detected waveforms will become more typical and regular, so the specific location of cable fault point can be determined quickly. During the long-term on-site measurement of cable customers, it is found that the fault of small cross-section copper core directly buried power cable (35mm2 and below) and aluminum core cable may be accompanied by short-circuit and wire breaking fault at the same time. During on-site detection, changing the short-circuit fault to wire breaking fault measurement according to the different fault nature of each fault core will often double everything with half the effort. For the medium voltage direct buried power cable with extruded armor as the inner lining, the fault is mostly caused by external mechanical damage. When the insulating core fails, the inner lining may have been damaged. In case of special cable insulation fault, it is difficult to collect waveform with professional cable fault instrument. It can be considered to use the acoustic method to apply the high-voltage pulse directly between the steel strip and copper shielding layer of the cable, which will often be fixed quickly. In the field measurement process, we also found that when using the acoustic measurement method to locate the fault point of low-voltage cable, when the high-voltage line and ground wire are connected between the bad phase and the metal shield or armor, the sound is very small, so the probe can not be used to listen to the fixed point, and the effect is not ideal. Through the actual listening side on site for many times, it is found that if the distance between the discharge ball gap is appropriately increased, and the high voltage and grounding wire are connected between the two phases of the fault, the discharge sound will become larger and the fault point will be determined quickly.
Model Prototyping and OXO Electric Screwdriver
Model Prototyping and OXO Electric Screwdriver
This project is part of a UX Prototyping class that involves weekly prototyping challenge.ChallengeCreate a two model prototypes of an electric screw driver for OXO. First create a quick and rough cardboard model to visualize the placement of controls and functionality. The second prototype will be higher fidelity with a strong focus on ergonomics.The electric screw drivers must have the following variable speed control mechanism/interaction for changing between speeds screw-driver selection mechanism allows you to automatically select and switch between either Phillips or flathead shape and five different sizes of each shape. direction selection mechanism (non-digital) to either screw in or unscrew digital readout (monochromatic, non-touch sensitive) Displays number of screws screwed and screws unscrewed for tracking your progress as a handyman/handywoman. can be used right or left-handed product dimensions are a minimum of 6 inches long 2.5 inch x 2.5 inch battery with charge port attached product weight is between 11.5 poundsResearchBefore ideating, I researched the OXO company brand and their products. OXO is known for their signature non-slip and comfortable handles. They are advocates for universal and easy to use products for everyone.Looking closely at the product handles they have similar round rubber handles that are sized appropriately to the average grip. The paddle and plow handles in Figure 1 are good example of OXOs comfortable handles. The plow has curves that leverage a persons thrust. I took inspirations from these designs into the model prototypes handles. Design: 1st ModelThe priority of the screwdriver was the comfort of the grip, so I focused on the handle first and then designed the rest of the screw driver around it. I used a similar angled handle on the screw driver like the plow above. This angled handle fit the natural angle of the human hand. In this position users could comfortably hold the screw head level and apply weight without straining the wrist. Influenced by the OXOs ease of use I placed the majority of the functionality near the handle. I placed scroll wheels to change the speed and direction of the drill within comfortable reach of the thumb. The digital read out is also close the grip. I added a reset button for the read out right below the screen. Lastly, I used a screw-driver selection mechanism that can be changed by first pulling out the head of the screw driver and the twisting it to a different size and shape. Feedback: 1st ModelAfter completing the first model I received critique from two peers. I specifically asked for feedback on three criterions: comfort, ease of use, and ease of access to controls. The table below summarizes their feedback. This feedback guided redesigns for the second model.Design: 2nd ModelTo address the negative feedback I focused on fixing three things- Longer handle with added weight and better grip- Curved elbow between handle and base- Clear instructions for changing screw driver size and shapeBefore I drafted these changes, I visited the art store to look for materials that would give me freedom to form the grip well. I then drafted a redesigned screwdriver that addressed the feedback. I spent most of the time forming the foam that made up the grip and controls on the elbow. I then added clay to give the grip better shape and add weight to it. I used foam stickers and markings to emphasize buttons and functions of the screwdriver. ModelPrototype. mp4Edit descriptiondrive. google. comFeedback: 1st ModelAn in class critique session helped evaluate the usability and comfort of the screwdriver. I got good reviews from most of my class mates with suggestions on small design choices.IN/OUT for digital read out isnt as clear as Screwed/UnscrewedThe screw-driver selection mechanism is confusing. The large red arrow misleading because it is on the part of the screwdriver that doesnt moveThe prototype is balanced but too light to get a good sense of how it would be usedLessons LearnedI enjoyed the challenge making these two models out of random materials and learning a few lessons in process.Iterating and testing provides valuable feedback and a better product.Weight is important for testing how the real prototype would feelEveryone has different bodies so it is important to test ergonomics with many people. RELATED QUESTION Why are courier packaging bags so popular? Courier packaging bags also known as tamper proof courier bags or security bags are the packaging material of choice for a variety of reasons. A few of the most important reasons for their popularity is : Versatility - These bags work for almost every kind of industry, since they can be fabricated to any size required - big or small. Environment Proof - These bags are made of plastic and hence are protected from environmental factors such as dirt , moisture , dust, water etc. Easy to Use - All you have to do is place the item inside and close the bag, no advance machinery required :) Tamper proof features - These bags have mechanisms in built into the bag that help detect any kind of tampering or pilferage during transit. Easy to brand - These bags can be branded in low quantities and customised courier bags have become the staple for every eCommerce startup looking to scale quickly. Budget Friendly - Probable the biggest reason for their popularity. These bags are available for a very budget friendly price, that is a big lure for companies looking to improve their bottom line. I hope this quick list helps :)
Instructions for Power Cable Fault Tester
Instructions for Power Cable Fault Tester
The power cable fault tester is a special cable testing equipment used to test the open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the open circuit and short circuit faults of coaxial communication cables and local telephone cables. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. â—† free on-site guidance, training and testing until the user is skilled and satisfied, and there are actual faults, which can be solved on site. â—† battery powered, truly portable; The test distance is greater than 40km. The host test error is less than 0.2m. â—† the host adopts industrial embedded computer system and 12.1-inch large screen LCD touch screen. â—† automatically select the sampling frequency, with a low of 6.25mhz and a high of 100MHz. â—† any double wave comparison function, test waveform can be stored, called, compressed and expanded arbitrarily. â—† the fault distance is automatically displayed, and the double cursor can move * * to 0.18m, which improves the test accuracy. â—† built in various field waveforms and field physical wiring diagrams for reference and learning. â—† cable data management software can establish perfect cable file management information. â—† high precision digital display fixed-point instrument, direct indication of the distance between the test end and the fault point, pioneered in China. â—† it can support wireless network card and carry out technical communication with our company anytime and anywhere. â—† the whole machine is guaranteed for three years, free training, free tracking service and free software upgrade. 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, buried cable fault detector, 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!
What Standards Are Followed During Non Contact Voltage Tester Pen Production?
What Standards Are Followed During Non Contact Voltage Tester Pen Production?
As is widely known to us that China is a manufacturing power. As our country develops, there arises a large number of manufacturing enterprises of non contact voltage tester pen, and some of them are on the top-ranked list by virtue of their modern technologies especially R&D capability while others are lack of their own technology, and are still struggling in this competitive society. For those companies who stand out in the industry, what they have in common is that they invest heavily in technological innovation and keep enhancing their R&D strength. You may search those suppliers on Alibaba.com, Made in China.com, or other websites frequently used by foreign suppliers.We’re a leader in the non contact voltage tester pen industry, serving hundreds of the world’s most recognized brands. SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED pays meticulous attention to material of non contact voltage tester pen and produce good quality products. Superior non contact voltage tester pen and remarkable non contact voltage tester pen creates NOYAFA.NOYAFA non contact voltage tester pen are available at unbeatable price. Get price!· Related Questions:1. What companies are developing non contact voltage tester pen independently in China?As the global demand for non contact voltage tester pen continues to increase, you will find more and more Chinese manufacturers emerging. In order to remain competitive in this evolving society, many suppliers are beginning to focus more on the ability to create their own independent production projects. NOYAFA is one of them. The ability to develop independently is very important and demanding, which may lead to excellence in commercial enterprises. As a professional supplier, it has always been committed to creating research and development skills to better enhance its competitiveness and create more innovative and modern products.
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