EN 60512-25-7:2005

1 Scope and object
2 Terms and definitions
3 Test resources
  3.1 Equipment
  3.2 Fixture
4 Test specimen
  4.1 Description
5 Test procedure
  5.1 Time domain
  5.2 Frequency domain
6 Details to be specified
7 Test documentation
Annex A (normative) Measurement system rise time
Annex B (informative) Determination of the near end and far
                      end of the specimen
Annex C (informative) Calibration standards and test board
                      reference traces
Annex D (informative) Interpreting TDR impedance graphs
Annex E (informative) Terminations - Electrical
Annex F (informative) Practical guidance - variable rise time
Annex G (informative) Printed circuit board design considerations
                      for electronics measurements
Annex H (informative) Test signal launch hardware
Figures
Table

Describes test methods to measure impedance, reflection coefficient, and voltage standing wave ratio in the time and frequency domains. Applies to interconnect assemblies, such as electrical connectors and cable assemblies, within the scope of IEC technical committee 48.