標準號：IEC 60512-23-3-2000
中文標準名稱：電子設備用電機元件.基本試驗程序和測量方法.第23-3部分:試驗23c.連接件和附屬件的屏蔽效應
英文標準名稱：Electromechanical components for electronic equipment - Basic testing procedures and measuring methods - Part 23-3: Test 23c: Shielding effectiveness of connectors and accessories
標準類型：L10
發(fā)布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：L10
國際標準分類號：31.220.10
適用范圍：This part of IEC 60512 defines a standard test method for measuring the shielding effec-tiveness of a connector, or a connector fitted with an accessory and terminated with a cable. The complete assembly has a continuous 360°shielding capability throughout its length.This test method utilizes the principle that the intrinsic shielding property of the connector/accessory/cable assembly is its surface transfer impedance which can be expressed as the longitudinal voltage inside the shield, relative to the current flow on the outside shell.The test method is based on two impedance matched circuits. See figure 1 for the measurement principle. The connector under test is integrated into the secondary circuit 02. The impedance matched injection line of the primary circuit 01, which activates the electromagnetic field, runs parallel to the surface of the test sample under test.This test is suitable for measuring the shielding effectiveness of a connector fitted with triaxial contacts terminated with shielded, twisted pair cables as used in data bus systems.NOTE This standard has been adopted by AECMA as EN 2591-212 and, as such, should not be amended without direct consultation and liaison with the AECMA organization.