1、STD.AECMA PREN 2591-2LZ-ENGL 2000 LOL23LL UOL887b 540 Edition approved for publication 2000-10-31 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months afler lhe date of publication to Gulledelle 94 C2 Chairman AECMA Mr Peuetta B-1200 BRUXELLES prEN 2591-21 2 Edition P 1 Oc
2、tober 2000 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 i0 - Fax. (+32) 2 775 81 i 1 ICs: Descriptors: ENGLISH VERSION Aerospace series Elements of electrical and optical connection Test methods Part 212: Surface transfe
3、r impedance Srie arospatiale Luft- und Raumfahrt Mthodes dessais Prverfahren Organes de connexlon lectrique et optique Partie 21 2: Impdance de transfert de surface Elektrische und optische Verbindungselemente Teil 212: Oberflchentransferimpedanz This Aerospace Series Prestandard has been drawn up u
4、nder the responsibility of AECMA (The European Association of Aerospace Industries). 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 fo/lowing comment by the Member countries. Subsequent to the publi
5、cation 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 (NPS) and formal agreement of the Offi
6、cial Services of the Member countries it will be submitted as a draft European Standard to CEN (European Commiffee for Standardization) for formal vote. 0 aecma 20( Page 2 prEN 2591 -21 2: 2000 Contents Scope . 3 Normative references 3 Preparation of specimens 3 Apparatus . 3 Procedure . 3 Requireme
7、nts . 3 Details to be specified 3 Page 3 prEN 2591-212: 2000 1 Scope This Standard specifies methods for measuring the surface transfer impedance and shielding effectiveness up to 1 GHz of a connector, or a connector fitted with an accessory and terminated with a cable. The purpose of the test is to
8、 ensure that the complete assembly shall have a continuous 360“ shielding capability throughout its length. This test is based on IEC 6051 2-23-3. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references a
9、re cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest
10、edition of the publication referred to applies. IEC 6051 2-23-3 Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 23: Miscellaneous tests - Section 3: Shielding effectiveness of connectors, and accessories using a line injection method 3 Pr
11、eparation of specimens Specimens shall be prepared in accordance with IEC 60512-23-3. 4 Apparatus The apparatus shall be in accordance with IEC 6051 2-23-3. 5 Procedure The test shall be carried out in accordance with IEC 60512-23-3. 6 Requirements The surface transfer impedance, expressed in ma, or
12、 converted to shielding effectiveness expressed in dB, shall not exceed the values specified in the product standard. 7 Details to be specified The following details shall be specified: - Surface transfer impedance, outside diameter of cable screen and construction of cable, if fitted; - The frequency range over which the measurements were carried out; - Any limitations on the effective frequency range of the test due to resonances.
