实施 中华人民共和国国家质量监督检验检疫总局 发 布 中 国 国家 标 准 化 管 理 委 员 会 GB/T 1 目 次 前言 ·························，·，，，，，，························，·····。·····。·············，·····························…… 皿 1 范围 ··························，·····‘···················································，，，····。····················一 1 2 规范性引用文件 ···························································‘···························，························一· 2 4 性能特性的表示 ···········，，··········································································……，二2 5 性能 ·····················，································，·····‘·················，·，，··，···‘····‘·············，·，·… 4 6 保护装置要求 ········，，·····，·，·····················，，··，，，，··。‘··············，，，··，，，，，，。···············……，.，10 7 音频噪声要求 ·········································································，·························…… 10 S 附加要求 ·····················································，···························，，，·····················…… 10 9 试验要求 ·······································································································…… n 10 标志和说明 ·11 附录A (规范性附录) 周期性和随机性偏差的试验方法 ·12 附录B (规范性附录) 输出过电压保护 ········，，，，····‘··4‘········，······，，·····