Cat5 Tester Buying Guide

Cat5 Tester Buying Guide

2021-11-09
NOYAFA
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cat5 tester is the best seller in SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED in the present. There are many reasons to explain its popularity. The first one is that it reflects the fashion and art concept. After years of creative and industrious work, our designers have successfully made the product to be of novel style and fashionable appearance. Secondly, processed by the advanced technology and made of the first-rate materials, it has outstanding properties including durability and stability. Lastly, it enjoys a wide application.Our strategy defines how we aim to position our NOYAFA brand on the market and the path we follow to achieve this goal, without compromising the values of our brand culture. Based on the pillars of teamwork and respect for personal diversity, we have positioned our brand on an international level, while at the same time applying local policies under the umbrella of our global philosophy.At Best Cable Tester Supplier in China _ Noyafa, the promotion of our service principle of integrity for our customers is greatly enhanced for getting cat5 tester.
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Top 5 Best Wire Tracker
Top 5 Best Wire Tracker
With the right software, you can be sure that your content is safe.Data mining and artificial intelligence are the buzzwords of today's business. Salespeople are using these technologies to generate leads and to understand them better. But there is a big gap between the salespeople' needs and what the data mining tools can provide them. Most of these tools are geared towards one specific problem: customer segmentation. An intelligent sales assistant can help you optimize your data mining efforts by generating leads for a specific customer group based on attributes such as gender, age, location or some other criteria.The problem with many wire tracking software is that they are not as highly customisable as you would like them to be. They are also more prone to failure and censorship than other more advanced tools.This article tries to provide a comprehensive guide on what makes the best free wire tracker software for web designers, so that you can choose the one which will suit your needs.The best way to effectively track your content is by writing it on a wire.The best way to ensure that you capture the most important information about your clients is with a wire tracker.Wire trackers are used when you need to know what your customers are talking about on social networks, blogs, forums and so on. These applications can help you get insights into how people use your products. They can also be used for fraud prevention when installing or updating software on computers and smartphones.The best way to keep in touch with customers is through reviews that they leave on relevant websites. All these situations require some form of communication between the service provider and its users, but what if those who use those services are not necessarily in control of their own data? What if they don't have access to theirThe best wire tracker is the one that you are most comfortable with. It should be easy to use, fast and user-friendly.It is essential for salespeople to be able to track their prospects and clients. This has been a challenge for many years. Here we list the best tools available for this purpose.It is a tool to track all the email that you have sent to your clients.If you want to go viral, then you need to reach the right audience. This is where the best trackers come handy; they can use them to create a lot of targeted landing pages for your company's content.A wire tracker is a tool that can be used to track the progress of a project. The main purpose of this tool is to keep clients updated on all the communication between the client and the advertising agency. The Wire Tracker provides clients with an overview of every email, call, meeting and other interaction they have had with its associated team.Free wire tracker software is a useful tool to help you track the number of email messages sent to your inbox.It works by tracking all the emails that you have received in a particular period of time. It helps you to understand the level of engagement that your users have with your websites, apps and products.In-depth guide to the best free wire tracker software, including tips on what to look for, pros and cons of each one.There are a number of different free wire tracker software on the market today. But what makes a good one?Why do we need to know about the best free wire tracker software? How can we determine which is the best for us?What are some of the advantages of using a wire tracker software instead of a paid one? What makes them unique and which ones should you choose? And finally, if you would like to receive more information about this topic, we have put together our in-depth guide.Email to wiretracker is one of the most overlooked features that can help you get your message out in a timely fashion. It’s a great way to curate your list of prospects, track activity on social media, and maximize the efficiency of your marketing campaign.The best wire tracker is a simple and versatile tool that allows you to automate the content creation process.Wire tracker is used by writers to create content for their clients. It takes the text from an email, word processor or other media file and automatically generates a web page, blog post, tweet or any other type of content. Unlike Google Docs, it does not require any extra software on your computer. You can use it in one click without any technical knowledge. With Wire Tracker you can create all kinds of content with just a few clicks.
Basic Knowledge of Cable Installation
Basic Knowledge of Cable Installation
Whether the cable is installed correctly or not is directly related to our personal safety, so it is very important to learn the correct cable installation method. First of all, we need to understand the precautions for cable installation: first, when the mining cable is placed in parallel with the heating pipeline, it shall be connected with a distance of 2m, and when interleaved, it shall be connected with a distance of 0.5m. Second, when the cable is placed in parallel or interleaved with other pipelines, it shall be connected with a distance of 0.5m. 3、 When the cable is directly buried, the direct burial depth of 1-35kV cable shall not be less than 0.7m. IV. when the cables of 10kV and below are placed in parallel, the clear distance between each other shall not be less than 0.1M, 10-35kV shall not be less than 0.25m, and the distance during interleaving shall not be less than 0.5m. V. the minimum bending radius of the cable shall not be less than 15d for multi-core cable and 20d for single core cable (D is the outer diameter of the cable). 6、 Discussion on 6kV and above cables. A. When placing the cable terminal, the semi-conductive barrier layer must be stripped off. The insulation shall not be damaged during operation. Knife marks and the environment with high and low resistance shall be prevented. If necessary, it shall be polished with sandpaper; The end of the barrier shall be flat, and the graphite layer (carbon particles) shall be broken and cleaned. B. The copper barrier and steel armor at the end of plastic insulated cable must be well grounded, and this criterion should also be observed for short routes to prevent electromotive force at the end of steel armor during three-phase unbalanced operation, even ignition and burning of sheath. Tinned braided copper wire shall be adopted for grounding outgoing line. Soldering iron shall be used for soldering when it is adjacent to cable copper strip, and blowtorch shall not be used for sealing welding to avoid burning insulation. C. The three-phase copper barrier shall be connected with the ground wire respectively. The detailed barrier ground wire and steel armor ground wire shall be led out separately and insulated from each other. The position of the welding ground wire shall be as low as possible. 7、 Fundamental requirements for cable terminal and center discussion: A. excellent conductor connection; b. The insulation is reliable. It is recommended to adopt radiation crosslinked heat shrinkable silicone rubber insulation material; c. Excellent sealing; d. Sufficient machine strength can comply with various operation conditions. 8、 The cable end must be waterproof and corroded by other corrosive materials to prevent breakdown caused by aging of insulation layer caused by water tree. 9、 Crane or forklift must be used for cable loading and unloading to prevent horizontal transportation and placement. Cable car must be used for large cable placement to avoid external force damage to the cable or scratch the insulation layer due to manual drag. 10、 If the cable cannot be laid in real time for some reason, it shall be stored in a dry place to prevent sunlight exposure, water inflow at the cable end, etc. Secondly, it is also a link that can not be underestimated, that is, it is necessary to conduct acceptance inspection on the installed cables to see if there are omissions. 1、 First, the user shall check and accept the cable to see if it is damaged, and the construction personnel shall test the resistance and insulation resistance of each cable with a multimeter to confirm whether the cable resistance and insulation are normal, and record it. 2、 The supervision personnel of the user are invited to accept the whole laying. The main acceptance items are: a) whether the insulation layer is laid smoothly; B) If reflective film is installed, check whether the laying of reflective film is smooth; C) Whether the barbed wire mesh is installed smoothly and fixed. D) After the heating cable is energized, check whether the surface temperature of the cable has increased significantly, and sign on the acceptance sheet for confirmation.
What Is the Difference Between a Live Cable Identifier and an Uncharged One
What Is the Difference Between a Live Cable Identifier and an Uncharged One
Cable identification instrument can accurately find out the characteristics of cables in a bundle of cables, which is a common equipment. Its wide range of applications can be used not only in cable fault handling, but also in cable erection or migration. There are two kinds of cable identification instrument, one is live cable identification instrument, and the other is not live. So what's the difference between them? Next, let's have a look. How to find a specific cable in a bundle of cables? How to accurately identify cables? Many power maintenance companies most commonly use the live cable identification instrument in power cable erection, migration, maintenance and fault treatment. However, in the face of complex cable and environmental differences, it has become very difficult to identify the running cable. What is the difference between a live cable identifier and a dead cable Identifier? How to distinguish quickly? 1. Working principle of the cable identification instrument the main working principle of the live cable identification instrument is to transmit the phase coded signal with an average value of 0 on the transmitting caliper, receive the single chip microcomputer in the caliper, filter the received signal through hardware and software, and then carry out phase identification. When the receiving clamp clamps 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. The working principle of the dead cable identification instrument is to add a special signal to the identified cable, which should be received by a special receiver. The periodic unipolar voltage pulse is fed into the cable to be identified. The direction of the pulse current fed into the cable can be used as an obvious identification standard, and the outgoing current only passes through this cable. 2. Basic parameters of the cable identifier: insert the red and black wiring plugs of the transmitting caliper a into the two red and black wiring posts corresponding to the transmitting source, and clamp the transmitting caliper a on the identified cable. The arrow on the transmitting caliper a points to the cable terminal. On the identified cable two meters away from the transmitting caliper, clamp the receiving caliper B to the cable, and the arrow on the caliper must point to the cable terminal. Then check the current direction and test connection direction. At the identification point, identify each cable with receiving caliper B. During identification, the arrow on the receiving caliper must always point to the terminal direction of the cable, and the cable shall be clamped one by one. On the identified cable, the current meter pointer of the receiver must deflect to the right, and the audible and visual alarm prompts 3. Precautions for the use of the cable identification instrument (1) if the operating cable has voltage and no load, there will be no current flowing on the cable. At this time, the magnetic field cannot be detected. It is considered to be an uncharged cable, which is very easy to misjudge. (2) If the cable is not running, but if this cable is parallel to other running cables, there will be induced current and magnetic field. At this time, the instrument will also have indication, and misjudgment will occur. (3) If there are multiple cables in the cable trench, these multiple cables will generate a magnetic field. At this time, there will be a magnetic field generated by 50Hz current in the whole area. At this time, there will be a magnetic field in the whole area, which makes the discrimination impossible. It is easy to misjudge.
How to Use the Wire and Cable Fault Tester to Quickly Find the Fault Point
How to Use the Wire and Cable Fault Tester to Quickly Find the Fault Point
In case of cable fault, power workers usually need to use cable fault tester to determine the location of fault point, so as to facilitate power workers to maintain cables. What problems should be paid attention to when using wire and cable fault tester to test fault points? Xiaobian summarized the following points on this issue. I hope you can solve your doubts and answer questions. Interested friends can have a look. 1. The gap between the discharge balls should not be increased. After using the cable fault comprehensive tester to roughly test the position of the fault point, if the gap between the discharge balls is adjusted too large, the impulse voltage will become higher, the high-voltage impulse time is too long, the fault point will be short circuited, the fault point will not discharge, and the fault point is difficult to find. Therefore, it should be noted that the gap between the discharge balls should not be adjusted too large. 2. In special cases, two fault testers can be used. If the soil layer is too thick, the surrounding environment has great interference, or the cable itself is damaged, resulting in weak vibration signal transmitted to the ground when the fault point is discharged, which makes it difficult to locate the fault point, two wire and cable fault testers can be used by taking advantage of the simultaneous occurrence of vibration wave and electromagnetic wave generated during fault click discharge. Use the probe and the probe to work at the fixed point at the same time. When two instruments hear a bang at the same time, and then find the sound point, we can accurately find the location of the fault point. 3. How to find the loudest point at the fixed point: after hearing the regular discharge sound, move the tester back and forth along the direction of the cable to find the position with large discharge sound. At this time, pay attention to reducing the output volume of the tester, and then slowly find the place with a loud sound. 4. Pay attention to replacing the battery. When the instrument is not in use, the power supply needs to be turned off in time. If the battery is low, the sensitivity of the instrument during test may be reduced, resulting in increased noise. Consider changing the battery at this time. 5. Check the wiring. If the shielding layer of the input line of the instrument is in poor contact, resulting in the sound of the radio station from the headset, you can check whether the wiring is correct. Precautions for cable laying: I. when using drainage pipes, the following provisions shall be observed: 1. The number of pipe holes shall be properly reserved according to the development needs. 2. For cables with large difference in conductor working temperature, different pipe banks should be set at appropriate spacing. C. the covering thickness of pipe top soil shall not be less than 0.5m. 3. The pipeline shall be placed on the leveled and compacted soil layer, and sufficient cushion blocks shall be provided to keep it continuous and straight; The longitudinal drainage gradient shall not be less than 0.2%. II. Requirements for cable wells. 1. Cable wells shall be set in the following parts of long cable ducts: (1) the limited distance of traction force between cables. (2) Cable branches and joints. (3) The direction of the pipeline changes greatly, or the cable goes directly underground through the drainage pipe. (4) The slope of the pipeline is large, and the fixation must be strengthened to prevent the cable from sliding. 2. Cable trench in power distribution room cable trench in power distribution room is generally used for incoming and outgoing lines of power distribution equipment, which is basically divided into under cabinet trench and double line trench. The cable trench wall is mu10 autoclaved lime brick, M5 cement sand, 1:2 cement mortar plastering of the trench wall, C20 concrete for coping and foundation, and channel steel shall be embedded under the equipment.
State of the Industry Report: Cable TV Tracker
State of the Industry Report: Cable TV Tracker
The introduction of cable tracker is one of the most significant developments in the television industry. The introduction of cable tracker every month to track and manage all cable channels was a step forward in the digitalization of TV. Now you can directly track your favorite shows, find out which shows are trending and which ones are on their way down, take action on new shows that will be available to watch later, see what is happening with your favorite channel and more.Cable providers have become the center of a new world, and there are many companies that are trying their best to be in the leadership. But it's not easy, because there is a lot of competition and they have to adapt quickly. In this article we will take a quick look at some of the most interesting products.Cable providers have long been in the business of delivering content to their customers. With the increasing speed of data availability and the rise in internet usage, they need to determine who is using their services and how much they are paying for it.With the rise of cable companies, most of us have been exposed to cable television. Since we are the ones that pay for these services, we should be able to get information about them as well.1. This section is dedicated to all cable providers, whether it is a local TV channel or a national cable company. What are the best ways to use your online customer database? What are the different methods of collecting information from your customers? Which data should you collect and how do you determine what kind of information to collect?2. This section is dedicated to all cable providers that want to improve their customer service by using data analytics and analytics software. How can they use this data in order to increase the overall efficiency for their customers? How can they improve their tracking abilities so that they will be able to better understand their customers' needs and wants? How can they identify trends in their customer's behavior and work towards improving it with actual data instead of guessing at what people want and need?Cable providers have a lot of cable channels that they have to pay for, and instead of spending too much money on them, they would like to find some alternatives.Unfortunately, they are not allowed to stream the content on their own servers anymore, since copyright infringement is punishable by law. Someone else has to be responsible for it, and that someone is the Cable Tracker.The Cable Tracker allows people who own a cable provider account or a satellite provider account (as long as they can see the satellite channel) to browse every single cable channel in their area and tell them what has been streamed on it. The user can easily create an alert if there is something that he thinks he should be aware about: when a movie is being played or if someone has accessed his account without his permission. After allWhat is Cable Tracker?Cable Tracker is a web based tool that allows cable providers to track viewer’s viewing habits across all of their channels. It provides them with a dashboard where they can view and analyze their subscriber’s viewing history.It seems like cable providers are focused on providing quality TV service to their customers. However, they are not the only ones to provide this service. Comcast, Aereo etc have faced similar issues of poor quality content that is being provided by their competitors even after paying for the content.There are 2 essential benefits of using these units:1. No need to spend money on continuous deployment and roll out of new technologies as there will always be a market for cable operators to offer their services. The same model can be replicated for any other industry or business sector because it doesn't require any investments in software development and deployment which can cost millions of dollars in order to implement new technology successfully. This also means that the overall investment required by an organization for new technology is minimal compared with other products or services thatThe idea is that a cable company will pay for the services of a cable picker who will go to different locations and collect the cables that are likely to go through a specific area.
What Are the Fault Finding Methods for Rural Buried Cables
What Are the Fault Finding Methods for Rural Buried Cables
After a fault occurs in an underground cable, it is generally necessary to make a preliminary judgment on the nature of the fault. Then, according to the fault type, the appropriate fault location method is adopted to preliminarily locate the fault point; Finally, along the direction of the buried cable, carefully detect the fixed point before and after the position until the accurate position of the fault point is found, so as to realize the fault maintenance of the buried cable. Today, let's learn about the fault finding method of buried cables in rural areas. 1、 Analysis and judgment method before finding the fault of rural buried cable, it is generally necessary to understand the relevant situation of the fault, then conduct comprehensive analysis, find out the cause of the fault, and then find and eliminate it pertinently. For example, finding informed parties such as constructors, wire users and other relevant personnel to understand the situation in detail may often eliminate the fault in the shortest time at a small cost. The advantages of analysis and judgment are simple and easy, no complex instruments are required, and some faults can be eliminated in time. Therefore, it is difficult to eliminate it quickly by this method. For buried wires with a length of more than 100 meters, the fault can be found by human analysis and judgment without instruments. Sometimes, it takes more than a dozen times to excavate, and it is difficult to find the fault point in more than ten days. Sometimes, it will damage other wires in the same trench and cause new faults. This method is generally not used alone, but in combination with other instrument detection methods. The failure of buried wires is caused by the following reasons: 1. External force damage: it is the main cause of the failure. For example, repeated construction above buried lines, laying water pipes, building canals, planting trees, building buildings, etc. are often very easy to damage the buried wire insulation layer, resulting in wire breaking fault or grounding fault. 2. Joint failure: due to the nonstandard joint process during construction, it is very easy to cause mechanical damage at the joint. Or there are problems such as large contact resistance and poor insulation at the joint. After the wire runs under load for a period of time, the hidden danger at the joint often causes wire breakage or grounding fault 3. Nonstandard laying: there shall be strict process requirements when laying buried wires. However, due to the large workload, wide range and shortage of personnel in rural power network transformation, there are often some non-standard construction behaviors in some areas in the construction of buried lines. For example, when the trench is backfilled, the spinning soil is not used, and the soil block containing gravel is directly backfilled, which is very easy to damage the insulating layer. 2、 The simple ground fault tester is used to test faults. At present, many brands of ground fault testers on the market have similar working principles and test methods. Its working principle is: a fixed voltage signal is applied to the grounding wire, and an electric field is formed on the ground around the grounding point. The closer it is to the fault point, the greater the potential difference between the same distance, and vice versa. According to this principle, the ground fault point can be found. The market price of this kind of test instrument is hundreds to thousands of yuan. The buried wire fault with very small grounding resistance can achieve the test purpose. The fault finding method of rural buried cable is introduced here. I hope you can use it in your work.
On the Debugging Method of Cable Fault Tester
On the Debugging Method of Cable Fault Tester
The cable fault tester can debug low resistance, short circuit, open circuit, high resistance leakage and high resistance flashover faults of various power cables below 35KV. It can debug the open circuit and short circuit faults of communication cable, control cable, signal cable, street lamp cable and local telephone cable. The length of various cables can be debugged and calibrated. It can adjust the propagation speed of radio waves in the cable. Cable fault tester debugging cable fault type: â—Ž it can debug low resistance, short circuit, open circuit, high resistance leakage and high resistance flashover faults of various power cables below 35KV. â—Ž open circuit and short circuit faults of communication cable, control cable, signal cable, street lamp cable and local telephone cable can be debugged. â—Ž the length of various cables can be tested and calibrated. â—Ž debugging method of cable fault tester capable of testing the propagation speed of radio wave in cable: â—Ž pulse method (debugging the full length of open circuit, short circuit, low resistance and open circuit fault distance of cable); â—Ž flashover method (debug high resistance leakage fault and high resistance flashover fault of cable); Characteristics of cable fault tester: â—Ž it has traditional pulse method and flashover method. â—Ž adopt 14.1 "Large screen LCD touch screen is used as the display terminal. The waveform is clear, the simulated touch key operation on the interface, the key definition is simple and clear, and the operation is very simple and fast. â—Ž the fault can be judged by debugging waveform to ensure the correctness and readability of debugging waveform. â—Ž the instrument works on WIN2000 platform. It has user-friendly software and full Chinese menu, very friendly man-machine dialogue and powerful data processing function. The dedicated database can store any number of debugging results. â—Ž with extremely safe sampling high voltage protection and isolation measures, the commissioning instrument will not crash and damage in the rated impact high voltage environment. â—Ž the success rate of fault detection, debugging accuracy and debugging convenience are better than any domestic detection equipment of the same kind. â—Ž it has a standard USB interface, which can easily connect the printer, standard keyboard, USB flash disk and upgrade the equipment software. â—Ž because there is no mechanical keyboard, it has simple operation and high reliability. â—Ž single end commissioning distance is 16km, and there is no commissioning blind area.
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!
Analyze the Problems That May Be Encountered in the Fault Detection of Pipeline Detector
Analyze the Problems That May Be Encountered in the Fault Detection of Pipeline Detector
Pipeline detector is one of the important equipment for underground pipeline survey. It can accurately and quickly detect the direction and location of various underground facilities under the condition of ensuring the integrity of ground covering soil. What we want to know today is the purchase method of the detector and some problems that may be encountered in the fault detection of the pipeline detector. You can study it carefully. The pipeline detector can quickly and accurately detect the position, direction and depth of underground water pipeline, metal pipeline and cable, as well as the position and size of the damage point of the anti-corrosion coating of steel pipeline without damaging the ground covering soil. It is one of the necessary instruments for water supply companies, gas companies, railway communications, municipal construction, industrial and mining, capital construction units to transform, maintain and survey underground pipelines. How to choose a pipeline detector? Here, I share my views with you, hoping to be helpful to you. 1. According to your own needs: many pipeline instruments are only suitable for some detection requirements. When selecting, you should understand the application scope of pipeline instruments. 2. Understand the test method of the pipeline instrument, whether the operation is simpler and the interface is more intuitive. 3. Understand the function of the pipeline instrument and whether the sounding capacity meets your needs. 4. Whether the configuration of accessories is complete, such as clamp (generally used for cable detection in dense areas), rechargeable battery (saving detection cost), etc. 5. The sustainable development of the instrument and the ever-changing technology are also a test standard of the instrument. 6. The compatibility of the instrument, whether the reception and transmission frequencies are wide, which is conducive to detection and expansion of use. In urban construction, urban underground pipeline data is very important. Pipeline detector manufacturers understand that many underground pipelines are troubled by aging and drawing changes during construction. At present, the detection work has been carried out in an all-round way. With the help of pipeline detector, supervise the whole process of project quality, project progress, operation safety and achievement archiving of underground pipeline detection. After the general survey, the results table will be prepared, the data function of the pipeline detector will be used, and the database and underground pipeline information management system will be established. It is a common situation for us to carry out detection in the completed area, which is a common problem in the fault detection of pipeline detector. For example, the general urban exploration work will encounter the interference of many urban buildings. At this time, it is necessary to rely on the sensing function of the pipeline detector for underground exploration. In the completed area, the operation procedure of the pipeline detector is: first, use the geophysical method to detect the category pipe diameter of each pipeline or the items of the inner bottom, upper pipe and outer top of the cross-section pipe (ditch) on the spot, and mark each characteristic point on the spot, then use the total station or RTK to measure the three-dimensional coordinates of each characteristic point, and then use the mapping software to draw the collected data on the topographic map for editing.
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