![]() ![]() These analysers have a bandwidth of 2.1 and 3.2 GHz respectively and are standard delivered with Tracking Generator. Siglent's SSA3021X and SSA3032X are currently the most popular spectrum analysers due to their exceptional price/quality ratio. This way you can see for yourself whether the device will (probably) comply with the guidelines or whether the design will have to be changed.Įleshop sells various spectrum analysers of the brands Rigol, Owon, Siglent and Rohde & Schwarz. When making measurements from your Device Under Test, you can compare the measured quasi-peak values with the quasi-peak limits in the EMC guidelines. This means that when a peak occurs more often, this component gets a higher weight in the measurement. Quasi-peak detection weighs each component on the basis of how frequently it occurs. Normal peak detection keeps the peak value of a signal, this indicates the worst case scenario. In EMC pre-compliance testing, it is important that the spectrum analyser is equipped with Quasi-peak detection. Spectrum analyser (with Quasi-peak detection) But how do you do such a test? And what equipment do you need for it?īelow you will find a brief explanation of which devices Eleshop sells and how they can be used to perform pre-compliance tests. This way EMC problems in a design can be detected early and a lot of money can be saved. In order to gain insight in advance whether there is a good chance of success of such a full-compliant test, you can carry out a pre-compliant test yourself, in your own lab. Such a test is not only very expensive, it is also quite an operation because the test setup has to be transported with the Device Under Test (DUT) and has to be rebuilt. In the Netherlands there are several labs, such as In order to get a product certified for EMC, it is necessary to have tests carried out in an accredited compliance laboratory. ![]() How is an EMC (pre-)compliance test performed and what equipment do I need for it? ![]() With this test it is possible to see how immune the device to be tested is to EM-energy. In immunity tests, EM energy is deliberately sent to a device to see how the device reacts to this energy. This EM-emission can be emitted by the device but can also be conducted by a power line.ĭuring an emission test, the exact EM emission of the device to be tested is examined and whether it does not exceed the set limits. The compliance tests consist of two parts, which will be described below.Īs described above, an electrical or electronic device can generate interference signals. The so-called EMC compliance tests are carried out to determine whether a device complies with these guidelines. In addition to the safety and reliability of the equipment, the EMC guidelines have also been drawn up to prevent interference from equipment with nearby television/radio receivers. These guidelines offer the users of the devices all over the world better reliability and safety. EMS is also referred to as the immunity of electrical equipment.Īll electrical and electronic products that are made, designed or imported must comply with the EMC guidelines. As described earlier, this is also referred to as Radio Frequency Interference (RFI).ĮMS, or Electromagnetic susceptibility, is the extent to which electronic equipment is insensitive to disturbing fields or external voltages. These electrical interference fields are called Electromagnetic Interference (EMI). These interference signals can interfere, for example through induction, with components or circuits within a device which can cause a device to malfunction or fail to function at all. These limits are intended to ensure that a device always operates correctly in an environment where other electrical devices or EMI sources are used.Īll electrical or electronic components and devices generate electromagnetic fields. Guidelines have been drawn up stating that all electrical equipment must comply with certain emission and immunity limits. It is also possible that these interference signals cause physical damage to a device. This electromagnetic energy can cause a device to suffer from Electromagnetic Interference (EMI), also known as Radio Frequency Interference (RFI). When a device reprocesses, propagates or receives electromagnetic energy, this can have very negative consequences. EMC, EMI and EMS What is Electromagnetic Compatibility (EMC)? ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |