ASD-STAN PREN 2591-B13-1992 Aerospace Series Elements of Electrical and Optical Connection Test Methods Part B13 - Shielding Effectiveness from 100 MHz to 1 GHz (Issue P 1)《航空航天系列 .pdf

上传人:orderah291 文档编号:451223 上传时间:2018-11-23 格式:PDF 页数:5 大小:221.90KB
下载 相关 举报
ASD-STAN PREN 2591-B13-1992 Aerospace Series Elements of Electrical and Optical Connection Test Methods Part B13 - Shielding Effectiveness from 100 MHz to 1 GHz (Issue P 1)《航空航天系列 .pdf_第1页
第1页 / 共5页
ASD-STAN PREN 2591-B13-1992 Aerospace Series Elements of Electrical and Optical Connection Test Methods Part B13 - Shielding Effectiveness from 100 MHz to 1 GHz (Issue P 1)《航空航天系列 .pdf_第2页
第2页 / 共5页
ASD-STAN PREN 2591-B13-1992 Aerospace Series Elements of Electrical and Optical Connection Test Methods Part B13 - Shielding Effectiveness from 100 MHz to 1 GHz (Issue P 1)《航空航天系列 .pdf_第3页
第3页 / 共5页
ASD-STAN PREN 2591-B13-1992 Aerospace Series Elements of Electrical and Optical Connection Test Methods Part B13 - Shielding Effectiveness from 100 MHz to 1 GHz (Issue P 1)《航空航天系列 .pdf_第4页
第4页 / 共5页
ASD-STAN PREN 2591-B13-1992 Aerospace Series Elements of Electrical and Optical Connection Test Methods Part B13 - Shielding Effectiveness from 100 MHz to 1 GHz (Issue P 1)《航空航天系列 .pdf_第5页
第5页 / 共5页
亲,该文档总共5页,全部预览完了,如果喜欢就下载吧!
资源描述

1、f I , CEN PRENw2591 (PART*B13) 92 m 3404589 O026875 T = A.E.C,M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 2591 Patt EI 3 Issue P 1 June 1992 DITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cde

2、x -Tl. (1 ) 47.36.98.76 UDC Key words : ENGLISH VERSION Aerospace series Elements of electrical and optical connection Test methods Part BI 3 - Shielding effectiveness from I O0 MHz to I GHz Srie arospatiale Luft- und Raumfahrt Mthodes dessais Prfwerfahren von 100 MHz bis 1 GHz Organes de connexion

3、lectrique et optique Elektrische und optische Verbindungselemente Teil BI 3 - Schirmwirkung . Partie BI 3 - fficacit du blindage de 100 MHz I GHz This .Aerospace Series) pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial).

4、It is published on green paper for the needs ofAECMA-Members. It has been technically approvedby the experts of the concerned Commission following comment by the Member countries. Subseqzent to the publication of this pre-standard, the technical content shallnot be changed to an extent that intercha

5、ngeability is affected, physically or functionally, without re-identificaion of the standard. After examination and signature of the AECMA Standard Checking Centre (NPSJ and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (Eu

6、ropean Committee for Standardization) for final vote. Nota - Extra copies can lie supplied hy 6.N.A.E.- Technopolis 54 199, rue Jean-Jacques Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication Comments should be sent within six months C2 Chairman after the date of publication

7、 decision Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cdex - FRANCE 1992-06-05 A.E.C.M.A. M. J. LE CUNFF 0 aecma 1992 CEN PREN*K259L (PART*BL3) 92 m 3484589 002b8b L W prEN 2591-813 Page 3 1 Scope and field of application . This standard specifies a method of measuring th

8、e Shieiding effectiveness of an element of connection fitted with highfrequency screen clamping backshells. It shall be used together with EN 2591. 2 References EN 2591 Aerospace series - Elements of electrical and optical connection methods - General Test 3 Preparation of specimens 3.1 Two alternat

9、ives : - the insert shall be removed, or, - the insert shall be installed without contacts and a hole shall be drilled through its centre. Aconductor of suitable geometry to match with the inside diameter of the elements of connection and high frequency screen clamping backshells shall be installed

10、inside these elements to provide a 50Q impedance coaxial line. Taped accessories may be used to provide a means of changing diameters to centre the conductor inside the elements of connection provided it does not introduce any significant discontinuity in the coaxial line. The voltage standing wave

11、ratio (VSWR) shall not exceed 1,s. 3.2 Unless indicated in the technical specification the following details shall be specified : - test frequency, - number of specimens, - type of element of connection and electromagnetic interference backshells, - attenuation. 4 Apparatus The electromagnetic radia

12、tion detector (see figure 1) consists of an outer shell so constructed as to provide a good 500 impedance match with the outside part of the mated shells of the element of connection, the coupling ring and screen clamping backshells. The voltage standing wave ratio shall not exceed 1,5. Previous pag

13、e f&. is blank CEN PREN*259L (PART*BL3) 92 I 3404589 O026877 3 E prEN 2591-i313 Page 4 A sliding circumferential short shall be positioned between the element of connection and the signal input end of the fixture for tuning the outer coaxial line for maximum output at each test frequency. The allowa

14、ble travel of this short shall be greater than a half wave length at the lowest test frequency, ie approximately 1,6 m for a 100 MHz frequency. The inner coaxial line shall be terminated in a high frequency fixed 500 load impedance behind the connector at the output end of the fixture. connector fro

15、in Radio frequency connector to detector 50 R load termination for inner coaxial line under test Travel of shori A must exceed 2 Figure 1 - Radiation detecting equipment 5 Method 5.1 Test fixture The test fixture shall comply with figure 2. The signal input shall be fed through a 10 dB isolation pad

16、 to a parallel circuit consisting of a coaxial switch so connect.ed that the signal can be fed alternatively to the radiation detecting equipment and to a variable 1 O0 dB reference attenuator. The attenuator shall be adjustable in 1 dB steps and calibrated to & 3 dB. The level of detected signal po

17、wer shall be indicated by a tunable high frequency field intensity meter isolated from the test circuit by a 3 dB to 10 dB filter. Care shall be taken to ensure that the signal is a result of high frequency leakage from within the element of connection and not due to a faulty termination inside the

18、fixture. CEN PREN*257L (PART*B13) 72 m 3404587 002b878 5 m prEN 2591 -BI 3 Page 5 (- The connectors used to couple together the various elements of the test circuit shall be of a low-leakage type which have a nominal impedance of 509, a voltage standing wave ratio of less than 1,5 and a minimum leak

19、age attenuation of 1 O0 dB. The output impedance of the signal source and the input impedance of the detector shall be nominally 509 with voltage standing wave ratio of I ,5. The input and output voltage standing wave ratio of the standard attenuator shall be less than 1,5 in the 20 dB to 100 dB ran

20、ge. All terminations inside the fixture, whether to the high frequency backshells of the test element of connection or t the backshells of the connectors used to couple the measuring instruments or between internal conductors shall have a leakage at least 1 O dB less than the test requirements. c Ra

21、dio frequency -.- Coaxialswitches Standard at tenua tor Figure 2 - Test assembly 5.2 Procedure The shielding effectiveness of an element of connection with high frequency backshells is measured in an electromagnetic interference detector. The electromagnetic interference leakage from the conductor i

22、nside the test element of connection into the outer coaxial line shall be measured at the frequencies specified by the technical specification within an accuracy of 2 5 %. Tune the outer coaxial line to obtain the maximum signal output by sliding the short. The level of detected signal power shall b

23、e read on a tunable radio frequency field intensity meter. The standard attenuator is switched to the power output and then to the field intensity meter input. The standard attenuator output signal level shall be adjusted to equal the signal level read before. The signal loss in the leakage detector

24、 can then be read directly from the setting on the variable attenuator. Check that the signal is really the result of electromagnetic interference leakage from within the mated element of connection and not of faulty terminations inside the fixture. CEN PREN*259L (PART*BL3) 92 I 3Li04587 002b879 7 I prEN 2591-BI3 Page 6 5.3 Requirement The attenuation shall not be less than that specified by the technical specification.

展开阅读全文
相关资源
  • ASD-STAN PREN 4022-1994 Aerospace Series Pipe Coupling 8 Degrees 30 in Titanium Alloy Elbows 90 Degrees Bulkhead Welded (Edition P1)《航空航天系列 钛合金制830管接头 90焊接穿壁弯头 第P1版[替代 ASD-STAN.pdfASD-STAN PREN 4022-1994 Aerospace Series Pipe Coupling 8 Degrees 30 in Titanium Alloy Elbows 90 Degrees Bulkhead Welded (Edition P1)《航空航天系列 钛合金制830管接头 90焊接穿壁弯头 第P1版[替代 ASD-STAN.pdf
  • ASD-STAN PREN 4021-1994 Aerospace Series Pipe Coupling 8 Degrees 30 in Titanium Alloy Elbows 90 Degrees Bulkhead (Edition P1)《航空航天系列 钛合金制830管接头 90穿壁弯头 第P1版[替代 ASD-STAN PREN 325.pdfASD-STAN PREN 4021-1994 Aerospace Series Pipe Coupling 8 Degrees 30 in Titanium Alloy Elbows 90 Degrees Bulkhead (Edition P1)《航空航天系列 钛合金制830管接头 90穿壁弯头 第P1版[替代 ASD-STAN PREN 325.pdf
  • ASD-STAN PREN 4018-2007 Aerospace series Pipe coupling 8 degree 30 in titanium alloy Elbows 90 degree with thrust wire nut (Edition P2)《航空航天系列 钛合金制830管接头 旋转螺母、带止推金属丝帽的90弯头 第P2版.pdfASD-STAN PREN 4018-2007 Aerospace series Pipe coupling 8 degree 30 in titanium alloy Elbows 90 degree with thrust wire nut (Edition P2)《航空航天系列 钛合金制830管接头 旋转螺母、带止推金属丝帽的90弯头 第P2版.pdf
  • ASD-STAN PREN 3256-1994 Aerospace Series Pipe Coupling 8 Degree 30 in Titanium Alloy Elbow 45 Degree Swivel Nut Welded (Edition P 2 )《航空航天系列 钛合金制830管接头 旋转螺母、焊接式45弯头 第P2版[替代为 AS.pdfASD-STAN PREN 3256-1994 Aerospace Series Pipe Coupling 8 Degree 30 in Titanium Alloy Elbow 45 Degree Swivel Nut Welded (Edition P 2 )《航空航天系列 钛合金制830管接头 旋转螺母、焊接式45弯头 第P2版[替代为 AS.pdf
  • ASD-STAN PREN 3254-1994 Aerospace Series Pipe Coupling 8 Degree 30 in Titanium Alloy Elbow 90 Degree Bulkhead Welded (Edition P 2)《航空航天系列 钛合金制830管接头 焊接式穿壁90弯头 第P2版[替代为 ASD-STAN.pdfASD-STAN PREN 3254-1994 Aerospace Series Pipe Coupling 8 Degree 30 in Titanium Alloy Elbow 90 Degree Bulkhead Welded (Edition P 2)《航空航天系列 钛合金制830管接头 焊接式穿壁90弯头 第P2版[替代为 ASD-STAN.pdf
  • ASD-STAN PREN 3253-1994 Aerospace Series Pipe Coupling 8 Degree 30 in Titanium Alloy Elbow 90 Degree Bulkhead (Edition P 2 )《航空航天系列 钛合金制830管接头 穿壁90弯头 第P2版[替代为 ASD-STAN PREN 402.pdfASD-STAN PREN 3253-1994 Aerospace Series Pipe Coupling 8 Degree 30 in Titanium Alloy Elbow 90 Degree Bulkhead (Edition P 2 )《航空航天系列 钛合金制830管接头 穿壁90弯头 第P2版[替代为 ASD-STAN PREN 402.pdf
  • ASD-STAN TR AMS2750-2009 《航空航天系列 航空航天材料规范 高温测定法》.pdfASD-STAN TR AMS2750-2009 《航空航天系列 航空航天材料规范 高温测定法》.pdf
  • ASD-STAN TR AMS2750 FRENCH-2009 《航空航天系列 航空航天材料规范 高温测定法》.pdfASD-STAN TR AMS2750 FRENCH-2009 《航空航天系列 航空航天材料规范 高温测定法》.pdf
  • ASD-STAN TR 9536-2008 Aerospace series Declarable Substances Recommended Practice《航空航天系列 需申报物质 建议做法》.pdfASD-STAN TR 9536-2008 Aerospace series Declarable Substances Recommended Practice《航空航天系列 需申报物质 建议做法》.pdf
  • ASD-STAN TR 9535-2008 Aerospace series Substance declaration (Edition 1)《航空航天系列 物质声明 第1版》.pdfASD-STAN TR 9535-2008 Aerospace series Substance declaration (Edition 1)《航空航天系列 物质声明 第1版》.pdf
  • 猜你喜欢
    相关搜索

    当前位置:首页 > 标准规范 > 国际标准 > ASD

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1