Display EMC testing is an important test for the electromagnetic compatibility (EMC) of electronic products.
The purpose of this test is to verify the product's immunity to interference in the electromagnetic environment to ensure that the product will not interfere with other electronic devices during normal use, and can also work normally.
1.Test content:
EMC testing of display screens mainly includes two aspects: radiation and conduction.
Radiation testing is used to detect whether a product will produce electromagnetic radiation in a working state, while conduction testing is used to detect whether a product is too sensitive to external electromagnetic interference and causes abnormal operation.
2.Radiation Testing:
Radiation testing is mainly to evaluate the radiation level of a product by measuring the intensity and frequency of the electromagnetic waves emitted by it in a working state.
These electromagnetic waves may travel through space and cause interference to other electronic devices.
Radiation testing is generally divided into two aspects: radiated emission test and radiated immunity test.
Radiated emission test refers to the measurement of the intensity of electromagnetic waves radiated into the outside space by a product in a working state.
During the test, the product is placed on a specific test bench and then tested and documented by a specialized instrument.
The test results will be compared with the electromagnetic radiation standards stipulated by the state to determine whether the product meets the relevant regulations.
Radiated immunity test refers to placing the product in an electromagnetic radiation environment, and observing whether the working state of the product will be interfered with and recording the results by providing interference sources of different power and frequency.
This test is to verify that the product is sufficiently resistant to interference.
3.Conduction test:
The conduction test is mainly by connecting the product to a set of professional test instruments to simulate the situation that the product is subject to external electromagnetic interference, and detect whether the product will work abnormally or data transmission errors as a result.
Conducted tests are generally divided into two aspects: conducted emission tests and conducted immunity tests.
Conducted emission test refers to the measurement of the intensity of electromagnetic waves propagated to the outside through transmission channels such as power lines and data lines in the working state of the product.
This test can determine whether the product will interfere with surrounding equipment.
Conducted immunity test refers to simulating the situation of electromagnetic interference on external transmission lines or power lines under the normal working state of the product, and observing whether the working state of the product will be affected.
This test is to verify that the product is sufficiently resistant to interference.
EMC testing of display screens is an important part of ensuring the safety and reliability of electronic products.
It reduces potential electromagnetic interference issues by evaluating the product's compatibility in an electromagnetic environment.
This test is to protect the interests of users and other devices, and to ensure that electronic products are legally sold in the market.
Therefore, manufacturers should attach great importance to display EMC testing in the product design and production process, and strictly abide by relevant standards and regulations.
Display EMC testing is an important test to ensure that a product can work properly in an electromagnetic environment and will not interfere with other equipment.
Through both radiation and conduction tests, the immunity of the product to interference can be evaluated.
This test is of great significance for the legality and reliability of the product, and should be fully valued and performed during the production of the product.