1、AECMA STANDARD NORME AECMA AECMA NORM prEN 2591-223 Edition P 1 April 2005 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION Gulledelle 94 - B-1200 Brussels - Tel. + 32 2 775 8110 - Fax. + 32 2 775 8111 - www.aecma-stan.orgICS: 49.060 Descriptors: ENGLISH VERSION Aerosp
2、ace series Elements of electrical and optical connection Test methods Part 223: Measurement of characteristic impedance of a coaxial connector or contact Srie arospatiale Organes de connexion lectrique et optique Mthodes dessais Partie 223 : Mesure de limpdance caractristique dun connecteur ou dun c
3、ontact coaxial Luft- und Raumfahrt Elektrische und optische Verbindungselemente Prfverfahren Teil 223: Messung der Impedanz eines Koaxial-Steckverbinders oder -Kontaktes This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospac
4、e Industries - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an ex
5、tent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for form
6、al vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 30 April 2005 Com
7、ments should be sent within six months after the date of publication to AECMA-STAN Electrical Domain Copyright 2005 by AECMA-STAN Page 2 prEN 2591-223:2005Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANs Electrical Domain. After inquiries and votes carried out i
8、n accordance with the rules of AECMA-STAN defined in AECMA-STANs General Process Manual, this standard has received approval for Publication. Contents Page 1 Scope 3 2 Normative references. 3 3 Preparation of specimens. 3 4 Apparatus 4 5 Requirement . 4 6 Detail to be specified 4 Page 3 prEN 2591-22
9、3:20051 Scope This standard specifies a test method of measuring the characteristic impedance of a couple of connectors, a couple of coaxial contacts. It shall be use together with EN 2591-100. 2 Normative references The following referenced documents are indispensable for the application of this do
10、cument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2591-100, Aerospace series Elements of electrical and optical connection Test methods Part 100: General 1). EN 3155-002, Aerospac
11、e series Electrical contacts used in elements of connection Part 002: List and utilization of contacts 1). EN 4604-002, Aerospace series Cable, electrical, for signal transmission Part 002: General 1). 3 Preparation of specimens 3.1 Connectors The connectors shall be wired with a length of coaxial c
12、able as per EN 4604-002, of which impedance is close to product standard. One end of one connector or contact is connected to a load resistor with same value than the cable. 3.2 Contacts The contacts shall be wired with a shorter as possible length of coaxial cable as per EN 4604-002, of which imped
13、ance is close to product standard. Then the contact shall be fitted in a dedicated connector as per EN 3155-002. One end of one contact is connected to a load resistor with same value than the cable impedance. See Figure 1. 1) Published as AECMA Prestandard at the date of publication of this standar
14、d. Page 4 prEN 2591-223:2005Key 1 Impedance meter reflectometer 2 Coaxial cable 3 Coaxial male connector (or contact) 4 Coaxial female connector (or contact) 5 Load resistor Figure 1 4 Apparatus The measurement shall require the use of an impedance meter reflection meter. The test signal shall be si
15、nusoidal, frequency range in accordance with product standard needs. 5 Requirement The recording value of impedance herein the connecting zone shall comply with the value specified in the product norm. 6 Detail to be specified Coaxial cable type. Impedance meter part number and serial number. Frequency of measurement. 1 2 2 3 4 5
