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http://dx.doi.org/10.12673/jant.2019.23.5.444

Protection Design for EMI and Indirect Lightning Effect for RS-170a Video Signal  

Cho, Seong-jin (Avionics R&D Lab, LIG Nex1)
Sim, Yong-gi (Avionics R&D Lab, LIG Nex1)
Kim, Sung-hun (Avionics R&D Lab, LIG Nex1)
Park, Jun-hyun (Avionics R&D Lab, LIG Nex1)
Publication Information
Journal of Advanced Navigation Technology / v.23, no.5, 2019 , pp. 444-451 More about this Journal
Abstract
In this paper, we introduce the design consideration of the EMI and lightning induced transient protection circuit for RS-170a video signal on the avionics equipment. Avionics equipment is subject to the risk of malfunction or physical damage due to indirect lightning effect from lightning strike or electromagnetic interference from external environment. So in order to protect the avionics equipment from these effects, we should analyze the effect of electromagnetic interference and lightning strike on aircraft and apply protection design for each avionics device, but protection circuit may cause signal distortion if signal level is low and frequency is high. In this paper, we introduce common protection design for EMI and indirect lightning effect, and consideration for minimize signal distortion caused by protection circuit for RS-170a. In addition, we show some example of improvements to the actual equipment design using consideration discussed in this paper.
Keywords
EMI filter; MIL-STD-461F; Indirect lightning; RTCA DO-160G section 22; RS-170a;
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