1、AECMA STANDARD NORME AECMA AECMA NORM prEN 2591 -G8 Edition P 1 December 1993 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1 1 47.36.98.76 UDC : 621.31 6.5:620.1:629.7 Descriptors : Airc
2、raft industry, aircraft equipment, connecting equipment, test ENGLISH VERSION Aerospace series Elements of electrical and optical connection Test methods Part 68 - Electrical elements Measurement of surface transfer impedance of couplers Srie arospatiale Luft- und Raumfahrt lectrique et optique Verb
3、indungselemente Organes de connexion Elektrische und optische Mthodes dessais Prfverfahren Partie 68 - Organes lectriqu Mesure de limpdance de transfert de surface des coupleurs Teil 68 - Elektrische Elemente Messung der Oberflchenbertragungsimpedanz von Kopplern This “Aerospace Series“ Prestandard
4、has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member cou
5、ntries. Subsequent to the publication of this prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre INPSI a
6、nd formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra ccpies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Roasseau - 921 38 ISSY-LES-
7、MOULINEAUX CEDEX C2 Chairman I Comments should be sent within six months after the date of publication to I Edition approved for publication 1993-1 2-31 AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE M. J. Le Cunff I I aecma 199 Copyright Association Eur
8、opeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- _ CEN PREN*Z59L- G8 93 = 3404589 0054358 8T8 i Page 3 prEN 2591 -G8:1993 1 Scope This standard specifies a method of measuring
9、the surface transfer impedance of couplers. It shall be used together with EN 2591. 2 Normative references EN 2591 Aerospace series - Elements of electrical and optical connection - Test methods - General 1) EN 3475-807 Aerospace series - Cables, electrical, aircraft use - Test methods - Part 807 -
10、Transfer impedance 2) 3 Preparation of specimens 3.1 Specimens shall be wired as shown in figure 1. 3.2 Unless indicated in the technical specification, the following details shall be specified : - surface transfer impedance; - frequency range; - test temperature. Pullover braid Short between test b
11、raid and pullover brald Short between and test brald conductors Coupler under test Shielded Isolated stub i lrn L I 1 Rediofrequency voltmeter Figure 1 4 Method See EN 3475-807. 5 Requirement Transfer impedance shall comply with the value specified in the product standard. Previous page is blank onn
12、ection are covered by a draft amendment which is in preparation to the European Standard EN 2591. 2) In preparation at the date of publication of this standard 1) At the date of publication of this standard, general aspects of elements of opt SI Radiofrequency generator Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
