The F-203I-A-DCN-23mm is a decoupling ferrite tube for use with the F-203I-A-23mm EM Injection Clamp. The F-203I-A-DCN-23mm is inserted on the test cables, between the Equipment under test and the Auxiliary equipment except for the line under test. The F-203I-A-DCN-23mm fully complies with the IEC 61000-4-6 Edition 4.0.