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Alarm systems for fire, intrusion and hold-up - Part 4-1: Active loudspeakers
参考页数：58P.;A4
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声系统设备. 第4部分: 传声器
Sound system equipment - Part 4: Microphones
参考页数：54P.;A4
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无线话筒. 3 GHz以下音频PMSE. 第4部分：辅助听力设备，包括3 GHz以下的个人声音放大器和感应系统. 协调标准，涵盖指令2014 / 53 / EU第3.2条的基本要求( EN 300 422 - 4 v2.1.1 ( 2017 - 05 )英文版作为德国标准的认可)
Wireless Microphones - Audio PMSE up to 3 GHz - Part 4: Assistive Listening Devices including personal sound amplifiers and inductive systems up to 3 GHz - Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU (Endorsement of the English version EN 300 422-4 V2.1.1 (2017-05) as German standard)
参考页数：2P.;A4
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音响系统设备: 便携式音频播放设备用头戴式受话器和耳机.最大声压级测量方法.第3部分:音量管理测量方法;德文版本EN 50332-3-2017
Sound system equipment: headphones and earphones associated with personal music players - maximum sound pressure level measurement methodology - Part 3: measurement method for sound dose management; German version EN 50332-3:2017
参考页数：15P.;A4
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音响系统设备: 便携式音频播放设备用头戴式受话器和耳机.最大声压级测量方法.第3部分:音量管理测量方法;德文版本EN 50332-3-2017
Sound system equipment: headphones and earphones associated with personal music players - maximum sound pressure level measurement methodology - Part 3: measurement method for sound dose management; German version EN 50332-3:2017
参考页数：15P.;A4
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微显投影机用交流超高压汞灯通用规范
General specification for micro-display Projector AC ultra pressure mercury lamp
参考页数：18P.;A4
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数字电视背投影显示器光学引擎技术要求及测量方法
Technical requirements and methods of measurement for optical engine of rear projection displays of digital television
参考页数：13P.;A4
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前投影机光学引擎技术要求及测量方法
Technical requirements and methods measurement for optical engine of front projection
参考页数：12P.;A4
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广播电视接收机用电子调谐器通用规范
General specification for electronic tuner of television broadcasting receivers
参考页数：40P.;A4
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声系统设备.第4部分:麦克风
Sound system equipment. Microphones
参考页数：58P.;A4
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