IEC 63137-1:20 19定义了标准测试射频（RF）连接器（0级）的一般要求，包括术语和定义、额定值和特性、一般要求、测试方法、质量评估程序等。 标准测试射频（RF）连接器（0级）旨在测量1级和2级RF连接器的电气性能。通常，标准测试射频（RF）连接器（0级）是一种适配器，其一端（通常是精密连接器接口）可以与测量设备连接，另一端（通常是标准测试连接器接口）可以与1级或2级连接器连接。 本规范适用于0级标准试验连接器（以下称为连接器）。

IEC 63137-1:2019 defines general requirements for standard test radio frequency (RF) connectors (grade 0), including terms and definitions, ratings and characteristics, general requirements, test methods, quality assessment procedures, and etc.
Standard test radio frequency (RF) connectors (grade 0) are intended to measure grade 1 and grade 2 RF connectors for electrical performances. Typically, a standard test radio frequency (RF) connector (grade 0) is an adapter with one end (normally a precision connector interface) which can be connected with measurement equipment and the other end (normally a standard test connector interface) which can be connected with grade 1 or grade 2 connectors.
This specification applies to grade 0 standard test connectors (called connector, hereinafter).