TP-108 Impedance@ Reflection Coefficient@ Return Loss@ and VSWR Measured in the Time and Frequency Domain Test Procedure for Electrical Connectors@ Cable assemblies or Interconnection Systems
This procedure applies to interconnect assemblies@ such as electrical connectors@ and cable assemblies. Object This standard describes test methods to measure impedance@ reflection coefficient@ return loss@ and voltage standing wave ratio (VSWR) in the time and frequency domains. NOTE ?? These test methods are written for test professionals who are knowledgeable in the electronics field and are trained to use the referenced equipment. Because the measurement values are heavily influenced by the fixturing and equipment this method cannot describe all of the possible combinations. The major equipment manufacturers provide Application Notes for more in-depth technical description of how to optimize the use of their equipment. It is imperative that the referencing document include the necessary description and sketches for the test professional to understand how to setup and perform the requested measurements.