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dnaSRPS EN 3475-812:2025

Aerospace series - Cables, electrical, aircraft use - Test methods - Part 812: Return loss (VSWR)

General information

50.20     Apr 23, 2026

50.60    Jun 18, 2026

ISS

S020

European Norm

49.060  

English  

Scope

This document specifies methods for measuring return loss and respectively voltage standing wave ratio (VSWR), in the required frequency range of coaxial cables.
The return loss is used for quantifying the level of the reflected signal due to an impedance mismatch between the cable and the reference impedance, and due to structural variations of the impedance along the cable.
It is intended to be used together with EN 3475-100 and EN 50289-1-11:2016.
NOTE In particular, correction procedures detailed in EN 50289-1-11:2016, Annex B are important to minimize negative effects of cable preparation in the purpose of high frequency range measurements.

Life cycle

PREVIOUSLY

PUBLISHED
SRPS EN 3475-812:2012

NOW

PROJECT
dnaSRPS EN 3475-812:2025
50.20 Proof sent to secretariat or FDIS ballot initiated: 8 weeks
Apr 23, 2026

Related project

Adopted from FprEN 3475-812 IDENTICAL

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