Application of new digital multimeter in industry
As one of the indispensable products in the field of electronic testing, the digital multimeter has the widest range of applications. A digital multimeter is a measuring instrument that uses the principle of analog/digital conversion to convert the measured data into digital quantities and display the measurement results in digital form. Compared with the pointer multimeter, the new generation of digital multimeter has the advantages of high precision, fast speed, large input impedance, digital display, accurate reading, strong anti-interference ability, and high degree of measurement automation, so it is widely used and favored by engineers.
Troubleshooting helps engineers solve problems
The data sampling rate of the multimeter up to 50k/s is currently the highest index in the industry. Utilizing this feature, continuous processes that were previously difficult to capture with slower readout digital multimeters can be fully captured.
In the field of electronic production, sudden failures often occur in the product line. It is very important for engineers to find out the cause of the failure and solve the problem in time. For example, DVD designers often have the problem of power supply burnout in the process of debugging products, which causes a lot of inconvenience to product production. Using the new A/D technology, the multimeter can achieve a readout speed of 50,000 readings/second, and can continuously send the readings directly to the PC at the same speed, and the non-volatile storage can reach a storage depth of 1M bytes. Its Data Log start trigger conditions have multiple setting methods, which are precise and flexible. The use of true effective value conversion technology can also significantly improve the accuracy of AC voltage measurement, and has an AC bandwidth of 3Hz-300kHz.
Using a multimeter, you can use the Data Log function to collect the overcharge phenomenon during the power-on process, and then download it to the PC with USB, and then use the analysis software to display and analyze the collected points, and finally find out the cause of the failure, helping engineers to solve problems in production. practical problems. In the acquisition and analysis of rapidly changing audio waveform data, seismic wave data, etc., the multimeter can also achieve comprehensive and accurate measurement and analysis.
Automatic measurement, unattended to complete the measurement task
The high-end desktop digital multimeter can be used not only as a single instrument, but also can form a complete application system with other equipment to complete various testing and measurement tasks. In addition, the automatic measurement function of the multimeter also helps engineers to complete product testing.
The automatic measurement function of the multimeter is not available in other similar products. Its internal inspection expansion interface can be connected with different matrix switching modules, and each module can be set with a different ID to facilitate the automatic configuration of the system. It supports a variety of host computer software and drivers, and can easily integrate the multimeter with the system; standard RS-232 and GPIB interfaces and SCPI programming language increase the convenience of integration.
Taking the product aging process in the production process as an example, the user can use the 12-way voltage differential input inspection module, program the test program of the multimeter in advance, and then test 12 independent products under test at the set time. Automatically record point data and automatically generate electronic data reports for production operators to check and analyze product quality and defects to eliminate unqualified products. Most importantly, the automatic measurement system configured with a multimeter does not require personnel to be on duty, and can realize long-term automatic monitoring and data collection of the measured object.
Digital Multimeter Detects Car Faults
When troubleshooting the electrical parts of a car, the most important thing is the reasoning process of the cause of the failure. This process is very important. This is because you can't see what's inside and it's impossible to disassemble a large number of components like mechanical parts. Problems can be found quickly by using logic and reasonable steps. And the key tool in this process is the multimeter.
A multimeter is one of the most commonly used automotive electrical repair tools to test voltage, current and resistance. However, the input impedance of the analog (pointer) multimeter used in the early stage was too low, which had a great influence on the electronic circuit during measurement. This kind of meter mostly uses 9V voltage when testing resistance, so it is easy to damage those sensitive electronic components. But the RIGOL digital multimeter multimeter completely avoids this situation.
Its input impedance is high, and its accuracy and safety are superior to analog watches. The voltage during resistance measurement is also low, so it will not damage the components of each sense. But there is also a problem with the general digital table. It cannot display the change information of the increase or decrease of the measurement reading. In the exhaust emission test and engine analysis, it will be found that the pure digital meter cannot give a stable change value. The multimeter overcomes the deficiency of the digital meter and replaces it with an analog/digital combination meter. It not only has the advantages of digital meters but also has the advantages of dynamic measurement of analog watches.
Monitoring of base station electrical signals
As a large set of equipment, the base station needs to monitor a lot of signals. Especially the monitoring of power supply and environment of the base station. The power supply is the basic condition for the operation of the equipment. The difference in environmental factors such as temperature and humidity will affect the operation and life of the equipment. Monitoring the parameter values in these aspects helps to prevent and solve problems. Long-term monitoring and statistics and analysis of saved data can provide more references for future use and subsequent development.
In the whole base station system, the power supply module supplies power to each module. Among them, there are four kinds of power supply to the board card in the RF module, which are 7.2V, 5.5V, 3.3V and 2.5V, and the required accuracy is +1%. The ambient temperature of the computer room of the base station is normal between 15 and 30°C, otherwise it is abnormal, and the humidity of the computer room is normal between 40% and 65%, otherwise it is abnormal. These routine data can be monitored through the inspection function of the high-end digital multimeter.
