ANSI/SCTE 144 2017

Test Procedure for Measuring Transmission and Reflection

The purpose of this test procedure is to determine the reflection at any port, or the transmission between any two ports of a properly terminated device, as measured across a frequency range of interest. Depending on use of the data, return loss, insertion gain or loss, isolation, response variation or bandwidth can be derived. This specification is applicable to the testing of 75 Ω devices.