T/AI 120-2022 RF performance measurement method for ground digital TV evolution system receiver

Scope

Scope: This document establishes the measurement conditions, electrical performance measurement items, and measurement methods for the radio frequency performance of receivers of terrestrial digital television evolution systems (hereinafter referred to as "receivers") in accordance with the requirements specified in T/AI 119-2022. This document is applicable to standard compliance testing of the radio frequency performance of receivers of terrestrial digital television evolution systems. Main technical content: This document covers the definition of terms, working conditions, test sites, measurement environment conditions, test signals, measurement systems and instruments, standard test conditions, etc. related to the measurement methods of the radio frequency performance of receivers of terrestrial digital television evolution systems, as well as test items such as frequency capture range, reflection loss, Gaussian carrier-to-noise ratio threshold, static multipath carrier-to-noise ratio threshold, reception level range, ability to suppress interference from analog neighboring channels and digital neighboring channels, ability to suppress 0dB echo, and dynamic multipath performance testing, and corresponding test methods. The standard lists other referenced standard documents. The technical content of this document was determined after a thorough study of the current technical status of products. This document will play an important role in standardizing and improving product quality and protecting consumers' interests.

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