Abstract
In the modern electronic landscape, electromagnetic compatibility (EMC) has emerged as a critical factor ensuring the reliable operation of electronic devices in diverse electromagnetic environments. Damped oscillatory magnetic field immunity testing, guided by the IEC 61000-4-10 standard, plays a vital role in evaluating a device’s ability to withstand damped oscillatory magnetic field disturbances. This paper focuses on the LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester, a specialized equipment designed for conducting IEC 61000-4-10 Oscillatory Immunity Testing. It provides a detailed examination of the tester’s design, specifications, working principle, and application scenarios. By analyzing the key parameters and performance indicators of the DOMF61000-10, this paper aims to demonstrate its significance in meeting the requirements of IEC 61000-4-10 Oscillatory Immunity Testing and ensuring the EMC performance of electronic products.
1. Introduction
With the rapid development of electronic technology, the number of electronic devices in use has increased exponentially, leading to a more complex electromagnetic environment. Electromagnetic disturbances can adversely affect the performance and functionality of electronic devices, potentially causing malfunctions, data loss, or even permanent damage. To address this issue, various EMC standards have been established worldwide, among which the IEC 61000 series is widely recognized and adopted.
IEC 61000-4-10 specifically focuses on damped oscillatory magnetic field immunity testing, defining the testing and measurement techniques for evaluating a device’s immunity to damped oscillatory magnetic fields. This type of disturbance is commonly encountered in real-world scenarios, such as those generated by switching operations in power systems, electrostatic discharges, and other electrical equipment. Therefore, conducting IEC 61000-4-10 Oscillatory Immunity Testing is essential for manufacturers to ensure their products can operate normally in the presence of such disturbances.
The LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester is a state-of-the-art testing equipment developed to meet the requirements of IEC 61000-4-10 Oscillatory Immunity Testing. It integrates advanced technologies to generate accurate and stable damped oscillatory magnetic fields, enabling comprehensive and reliable testing of electronic devices. This paper will delve into the various aspects of the DOMF61000-10, highlighting its role in facilitating IEC 61000-4-10 Oscillatory Immunity Testing.
The primary purpose of IEC 61000-4-10 Oscillatory Immunity Testing is to assess the ability of electrical and electronic equipment to withstand damped oscillatory magnetic field disturbances. These disturbances can originate from a variety of sources, including but not limited to:
Switching of inductive loads in power systems, such as transformers and motors.
Electrostatic discharges (ESD) occurring near electronic devices.
Operation of high-frequency electrical equipment, such as radio transmitters and microwave ovens.
The standard applies to a wide range of electrical and electronic equipment, including household appliances, industrial control systems, medical devices, and automotive electronics. By conducting IEC 61000-4-10 Oscillatory Immunity Testing, manufacturers can identify potential vulnerabilities in their products and take appropriate measures to enhance their immunity, thereby improving the overall reliability and safety of the devices.
IEC 61000-4-10 Oscillatory Immunity Testing involves exposing the device under test (DUT) to a damped oscillatory magnetic field of specified characteristics. The damped oscillatory magnetic field is generated by a test generator and a coupling device, typically a single ring coil. The key parameters of the damped oscillatory magnetic field defined by the standard include:
Magnetic Field Strength: The maximum amplitude of the magnetic field, which determines the severity of the disturbance.
Oscillation Frequency: The frequency of the oscillatory component of the magnetic field, which affects the way the disturbance interacts with the DUT.
Rise Time: The time taken for the magnetic field to rise from a specified lower value to its maximum amplitude, influencing the transient response of the DUT.
Attenuation: The rate at which the amplitude of the oscillatory magnetic field decreases over time, ensuring that the disturbance is a damped oscillation rather than a continuous wave.
During the test, the DUT is placed in the vicinity of the coupling coil, and the damped oscillatory magnetic field is applied. The performance of the DUT is monitored under the influence of the disturbance to determine if it meets the specified immunity criteria. The criteria may include no degradation in performance, no functional failure, or no permanent damage to the DUT.
The LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester is a comprehensive testing system specifically designed to perform IEC 61000-4-10 Oscillatory Immunity Testing. Its design is based on the requirements of the standard, ensuring accurate and repeatable test results. The main components of the DOMF61000-10 include:
The damped oscillating wave generator is the core component of the tester, responsible for generating the damped oscillatory electrical signal that drives the coupling coil to produce the desired magnetic field. It incorporates advanced electronic circuits to precisely control the parameters of the damped oscillatory signal, such as frequency, amplitude, rise time, and attenuation. The generator is capable of producing signals with oscillation frequencies of 100kHz and 1MHz, which are the two key frequencies specified in IEC 61000-4-10 for damped oscillatory magnetic field immunity testing.
The single ring coil serves as the coupling device, converting the electrical signal from the generator into a damped oscillatory magnetic field. The design of the coil is optimized to ensure uniform magnetic field distribution in the test area where the DUT is placed. The coil’s dimensions and number of turns are carefully selected to achieve the required magnetic field strength within the specified frequency range. The DOMF61000-10 is equipped with a high-quality single ring coil that can generate a magnetic field strength ranging from 0 to 100A/m, covering the test levels specified in IEC 61000-4-10.
The DOMF61000-10 features a user-friendly control and monitoring system, which includes a big LCD touch screen. The touch screen provides an intuitive interface for operators to set up test parameters, start and stop the test, and monitor the test process in real-time. The system also has built-in IEC standard test levels, allowing operators to quickly select the appropriate test configuration without the need for manual parameter adjustment. Additionally, the control system supports step voltage adjustment, enabling precise control of the magnetic field strength during the test.
The technical specifications of the LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester are carefully designed to meet the requirements of IEC 61000-4-10 Oscillatory Immunity Testing. The following table provides a detailed list of the key specifications:
| Specification Parameter | Value | Description |
| Magnetic Field Strength | 0~100A/m | The range of magnetic field strength that can be generated, covering the test levels required by IEC 61000-4-10. |
| Oscillation Frequency | 100kHz, 1MHz | The two specified oscillation frequencies for damped oscillatory magnetic field immunity testing in IEC 61000-4-10. |
| Pulse Polarity | Positive, Negative or Positive/Negative automatic | Allows selection of different pulse polarities to simulate various real-world disturbance scenarios. |
| Rise Time | 75ns±20% | The time taken for the magnetic field to rise to its maximum amplitude, meeting the transient response requirements of the standard. |
| Attenuation | Attenuation to half value of first peak within fifth peak to tenth peak | Ensures that the magnetic field is a damped oscillation, as specified in IEC 61000-4-10. |
| Repeat Frequency | 1~80Hz (100kHz oscillation frequency); 1~500Hz (1MHz oscillation frequency) | Adjustable repeat frequency to control the number of disturbances applied to the DUT per unit time. |
| Burst Width | 1～9999s (Adjustable) | The duration of each burst of damped oscillatory magnetic field, allowing flexibility in test configuration. |
| Pulse Interval | 1～9999s (Adjustable) | The time interval between consecutive pulses, enabling simulation of different disturbance occurrence patterns. |
| Test Function | Built-in IEC standard test levels; Step voltage; Big LCD touch screen | Facilitates easy test setup and operation, ensuring compliance with IEC 61000-4-10. |
These specifications demonstrate that the DOMF61000-10 is capable of generating damped oscillatory magnetic fields with the precise characteristics required for IEC 61000-4-10 Oscillatory Immunity Testing. The adjustable parameters allow operators to customize the test conditions to meet the specific requirements of different DUTs, ensuring comprehensive and accurate testing.
DOMF61000-10__Damped Oscillatory Magnetic Field Immunity Tester
The working principle of the LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester in conducting IEC 61000-4-10 Oscillatory Immunity Testing can be divided into the following key steps:
• DUT Placement: The device under test (DUT) is placed in the specified test position within the magnetic field generated by the single ring coil. The distance between the DUT and the coil is determined based on the requirements of IEC 61000-4-10 to ensure that the DUT is exposed to the correct magnetic field strength.
• Parameter Configuration: Using the big LCD touch screen of the DOMF61000-10, the operator selects the appropriate test parameters, including oscillation frequency (100kHz or 1MHz), magnetic field strength, pulse polarity, repeat frequency, burst width, and pulse interval. The built-in IEC standard test levels can be directly selected to simplify the setup process.
• System Calibration: Before starting the test, the tester may undergo a calibration process to ensure the accuracy of the generated magnetic field. This involves measuring the magnetic field strength at the test position using a calibrated magnetic field probe and adjusting the generator parameters if necessary.
Once the test setup is complete, the damped oscillating wave generator of the DOMF61000-10 produces an electrical signal with the specified characteristics. This signal is sent to the single ring coil, which converts the electrical energy into a magnetic field. The coil’s design ensures that the magnetic field is uniform in the test area and has the correct oscillation frequency, rise time, and attenuation as required by IEC 61000-4-10.
The damped oscillatory nature of the magnetic field is achieved by the generator’s internal circuitry, which causes the amplitude of the electrical signal (and thus the magnetic field) to decrease over time. The attenuation is controlled to ensure that the amplitude of the magnetic field drops to half of its first peak within the range of the fifth to tenth peak, as specified in the standard.
The generated damped oscillatory magnetic field is applied to the DUT for the specified burst width and at the selected repeat frequency. During the test, the performance of the DUT is closely monitored using appropriate measurement equipment. The monitoring may include checking the DUT’s output signals, functional status, and any indicators of malfunction or damage.
If the DUT operates normally without any degradation in performance, functional failure, or permanent damage during the test, it is considered to have passed the IEC 61000-4-10 Oscillatory Immunity Testing. If any issues are detected, the test parameters may be adjusted, or the DUT may need to be modified to improve its immunity before re-testing.
The LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester finds wide application in various industries where IEC 61000-4-10 Oscillatory Immunity Testing is required. Some of the key application scenarios include:
In the consumer electronics industry, products such as smartphones, tablets, televisions, and household appliances need to undergo EMC testing to ensure they can operate reliably in domestic electromagnetic environments. The DOMF61000-10 is used to test the immunity of these products to damped oscillatory magnetic fields, which may be generated by other household devices or power system switching operations. By passing IEC 61000-4-10 Oscillatory Immunity Testing, consumer electronics products can avoid performance issues such as screen flicker, audio distortion, or unexpected shutdowns.
Industrial control systems, including programmable logic controllers (PLCs), sensors, and motor drives, are critical components in industrial production processes. These systems are often exposed to harsh electromagnetic environments, including damped oscillatory magnetic fields generated by industrial machinery and power equipment. The DOMF61000-10 is employed to test the immunity of industrial automation products to such disturbances, ensuring their stable operation and preventing production downtime due to electromagnetic interference.
Medical devices, such as diagnostic equipment, monitoring devices, and surgical instruments, require high levels of reliability and safety. Electromagnetic disturbances can have serious consequences for medical devices, potentially affecting their accuracy and functionality, which may compromise patient safety. The DOMF61000-10 is used to conduct IEC 61000-4-10 Oscillatory Immunity Testing on medical devices, ensuring they can withstand damped oscillatory magnetic fields and maintain their performance in clinical environments.
Modern automobiles are equipped with a large number of electronic systems, including engine control units (ECUs), infotainment systems, and safety systems. These electronic systems are exposed to various electromagnetic disturbances during vehicle operation, such as those generated by the ignition system, power steering, and other electrical components. The DOMF61000-10 is utilized to test the immunity of automotive electronics to damped oscillatory magnetic fields, ensuring the safe and reliable operation of the vehicle’s electronic systems.
The LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester offers several advantages and benefits that make it an ideal choice for conducting IEC 61000-4-10 Oscillatory Immunity Testing:
The DOMF61000-10 is specifically designed to meet the requirements of IEC 61000-4-10 Oscillatory Immunity Testing. Its technical specifications, including magnetic field strength, oscillation frequency, rise time, and attenuation, are all in line with the standard, ensuring that test results are accurate and valid. This compliance allows manufacturers to obtain test reports that are recognized by regulatory authorities and customers worldwide.
The tester incorporates advanced electronic components and control algorithms to ensure high precision and stability in generating the damped oscillatory magnetic field. The magnetic field strength can be adjusted with high accuracy, and the oscillation frequency and rise time are tightly controlled within the specified tolerances. This high level of precision ensures that the test conditions are consistent and repeatable, enabling reliable comparison of test results between different DUTs or during different test sessions.
The DOMF61000-10 features a big LCD touch screen and an intuitive user interface, making it easy for operators to set up and conduct tests. The built-in IEC standard test levels eliminate the need for manual calculation and parameter adjustment, saving time and reducing the risk of human error. Additionally, the tester provides real-time monitoring of test parameters and DUT performance, allowing operators to quickly identify and address any issues during the test.
The adjustable parameters of the DOMF61000-10, such as magnetic field strength, repeat frequency, burst width, and pulse interval, make it suitable for testing a wide range of DUTs with different immunity requirements. Whether testing small consumer electronics or large industrial equipment, the tester can be customized to meet the specific needs of the test. This versatility and flexibility make the DOMF61000-10 a valuable tool for manufacturers in various industries.
8. Conclusion
IEC 61000-4-10 Oscillatory Immunity Testing is a crucial aspect of EMC testing, ensuring that electronic devices can withstand damped oscillatory magnetic field disturbances in real-world environments. The LISUN DOMF61000-10 Damped Oscillatory Magnetic Field Immunity Tester provides a reliable and efficient solution for conducting this type of testing. With its compliance with the IEC 61000-4-10 standard, high precision and stability, user-friendly operation, and versatility, the DOMF61000-10 is well-suited for applications
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