Communication cables. Specifications for test methods - Electrical test methods. Characteristic impedance, input impedance, return loss Ingestion-build-264231 c) forgings: hardened and tempered

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Normative references to international publications with their corresponding European

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2 states that A test portion taken from the coke above 20 mm particle size and of known size distribution is subjected to mechanical stresses in a rotating drum for 100 revolutions (Micum test) or 500 revolutions (Irsid test)

Communication cables. Specifications for test methods - Electrical test methods. Characteristic impedance, input impedance, return loss Ingestion-build-264231 c) forgings: hardened and tempered1 Scope This part of EN 50289 details the test methods to determine characteristic impedance, input impedance and return loss of cables used in analogue and digital communication systems. It is to be read in conjunction with EN 5028911, which contains essential provisions for its application.