Changes are made based on real world feedbackĮarly EMC testing can save money by reducing over-engineering, so ensuring that a product can pass compliance tests easily. Pre-compliance testing makes certification an overall less stressful experience.ĥ. As well as EMC, a chamber can be used to measure comparative signal strength for low power radios to check performance over time, or the effect of modifications. Reduced risk of failing certificationĮarly EMC testing can de-risk a project by determining non-compliance issues prior to submitting for formal testing. For instance, testing during development with evaluation or strip boards will provide the designer with the opportunity to add in preventative measures in the form of additional circuitry, such as signal bead filters, to prevent potential issues.Ĥ. However, when testing is integrated into development, a testing chamber and expert advice is available during the entire project lifecycle.ĭesign engineers that offer EMC pre-compliance testing as part of their services will be continuously on the lookout for areas of risk during product development. Stand-alone pre-compliance testing can be expensive especially if a product doesn’t pass first time, as subsequent rounds of testing will be required after design alterations. More agile projects where testing is integrated in development This could be for example testing the front end of a data acquisition system, or the processor module on its own in a mechanical enclosure that runs data processing algorithms.ģ. Setting pre-compliance as a milestone can help keep a project healthy by focusing the team on ensuring that the software, electronics and mechanics will be in at a certain standard for the test. The ability to test to EN55022, EN61000 and EN6, as well as MIL-STD-461 for emissions provides confidence in your design. Using an anechoic testing chamber before formal testing can determine whether a design will meet relevant compliance standards. Testing is already done to compliance standards EMC is not just about electronics, it’s about the system and mechanical changes may be required, such as adding EMI shields, coating boxes or adding EMC foam to fill any leaks/gaps in an enclosure.Ģ. The risk to a design failing is usually relative to how long you delay testing, so designers that leave testing to the project end are completely reliant on the design team’s skill and experience.Īn analogy I like to use is the process of baking a cake without checking the taste at different phases of the process, but instead of making and baking the cake and then finding out you forgot to add enough sugar.Įarly analysis of the electronics can also drive system decisions. Pre-compliance testing can focus on the areas that you have identified as potential causes for concern and find solutions for them early. Fixing problems after compliance testing is much more expensive and time consuming than fixing them during the design stage. The earlier product deficiencies are identified in the development process, the easier it is to rectify any shortcomings. Early error detection speeds up project lifecycle There are a number of advantages of pre-compliance testing:ġ. ![]() Likewise, this thinking is moving to the electronics industry – investigating emissions from your device during each major development stage is the best way to avoid costly re-testing and high failure rates. ![]() In the software testing industry, there is a move to shift testing left and introduce it earlier in the product development lifecycle.
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