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  • BSI Flex 1903 v2:2024-06 community preview

    This is an interactive version 2 of BSI Flex 1903. The aim of the standard is to create a lexicon of standard terms and acronyms used in this sector. Please note, content is still undergoing internal review and there may be minor changes at full publication.

    We welcome your engagement and comments on this version to help inform the development of the standard. We would also welcome general feedback including what terms could be considered for future versions and these can be made through our dedicated feedback page .

electromagnetic interference (EMI)

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  • Definition

    degradation in the performance of equipment or transmission channel or a system caused by an electromagnetic disturbance

     

    NOTE 1 EMI sources can be either manmade (intentional or unintentional) or naturally occurring phenomena such as lightning or solar flares.

    NOTE 2 The three main types of EMI are radiated EMI, conducted EMI and coupled EMI.

    NOTE 3 On an uncrewed aircraft (UA) (3.1.134), undesirable EMI effects include, but are not limited to, collision avoidance (3.1.40).

    NOTE 4 UA payloads should be designed and tested to avoid the inadvertent transmission of any EMI that affects the control of the UA.

     

    [SOURCE: IEC. IEC 60050-161, International Electrotechnical Vocabulary] [23]

     

    Previous Version: 1.0 Release date: September 2023 

    degradation in the performance of equipment or transmission channel or a system caused by an electromagnetic disturbance

    NOTE 1 EMI sources can be either manmade (intentional or unintentional) sources of naturally occurring phenomena such as lightning or solar flares.

    NOTE 2 The three main types of EMI are radiated EMI, conducted EMI and coupled EMI

    NOTE 3 On an  “uncrewed aircraft (UA)” (3.1.134), undesirable EMI effects may include but are not limited to: the command and control (C2) link (3.1.22) , the flight controller, navigation controller, power distribution board, electronic speed controllers and autopilot flight control inputs

    NOTE 4 UA payloads are designed and tested to avoid the inadvertent transmission of any “electromagnetic interference (EMI)” (3.1.41)  that affects the control of the UA.

    [SOURCE: International Electrotechnical Commission (IEC) 60050 - International Electrotechnical Vocabulary] ) [16]
     

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