ANSI/SCTE 45 2022

Test Method for Group Delay

Executive Summary
This document describes the test methodology for measuring group delay and group delay variation of devices used in an HFC network.

The purpose of this test is to measure the group delay and group delay variation of a properly terminated device. This procedure is applicable to testing of 75 Ω components.

This document provides an industry-standard method for the measurement of group delay variation on RF products. Implementation of this standard method will allow for direct comparison of results performed in disparate locations and by different testers. This allows the broadband industry to have a standard measurement technique by which all products are measured for this specific parameter.

Intended Audience
This document is intended for use by RF hardware development engineers or MSO engineers who wish to validate RF specifications.