GSO IEC 60315-1:2014由GSO 发布于 2014-12-25。
GSO IEC 60315-1:2014在国际标准分类中归属于: 33.160.20 无线电接收机。
GSO IEC 60315-1:2014 测量不同类别广播的无线电接收机的方法 第1部分:一般注意事项和测量方法 包括音频测量的最新版本是哪一版?
最新版本是 GSO IEC 60315-1:2014 。
This standard applies to radio receivers of any kind, excluding television receivers, and to the parts of which they are composed or which are used as auxiliaries to such receivers, excluding those dealt with in IEC Publications 94, 98 and 268. This standard deals with the determination of performance, the comparison of equipment and the determination of proper practical applications by listing the characteristics which are useful for specifications and laying down uniform methods of measurement for these characteristics. This standard is confined to a description of the different characteristics and the relevant methods of measurement; it does not in general specify performance requirements. The complete standard consists of the following pa rts, in which the characteristics of various types of receiver and their methods of measurement are specified; some parts include preferred Values: — Part 1: General considerations and methods of measurement, including audio-frequency measurements (IEC Publication 315-1 (1988)). — Part 3: Radio-frequency measurements on receivers for amplitude-modulated emissions (Publication 315-3 (1973)). — Part 4: Radio-frequency measurements on receivers for frequency modulated sound-broadcasting emissions (Publication 315-4 (1982)). — Part 5: Specialized radio-frequency measurements. Measurements on frequency-modulated receivers of the response to impulsive interference (Publication 315-5 (1971)). — Part 8: Radio-frequency measurements on professional receivers for frequency-modulated telegraphy systems (Publication 315-8 (1975)). The standard does not deal with safety, for which reference is required to IEC Publication 65 or other appropriate I EC safety standards, nor with radiation and immunity, for which reference is required to C.I.S:P.R. Publication 13.
不过,电子测量仪器中也有能覆盖很宽量程的情况,如一台完善的频率计数器能测量10~10赫的频率,量程为1:10。一般说来,同类的量在不同频段的测量和计量所用的方法和器具往往不同。但也存在不少频程很宽的测量器具,如从音频直到40吉赫的频谱分析仪和 0~18吉赫的标准衰减器等。...
典型的视频测试包括同步和脉冲幅度、chroma/luma增益、差分增益和差分相位。典型的音频测试包括增益、噪声电平、信噪比和总谐波失真。 该测试方案通过软件修改能够轻松地扩展到数字电视标准。在音频视频信号产生部分,PXI-5671矢量信号发生器有很强的软件定义无线电能力,还有高达2.7GHz的输出频率范围和20MHz实时宽带。...
其中第1天至第5天进行单独分析,第6天至第9天对所有样品基质组进行混合分析,不仅单个测量日的回收率极其稳定,在对所有不同基质类型的回收率进行比较时,回收率同样保持一致,这进一步证明,不同类型的食品和饮料样品基质可以灵活分析,也可以在单一方法中混合,对数据质量或测量可靠性无任何负面影响。通过近两周对1878个不同样品的成功测量,证明了所开发方法的稳健性。...
选择开关 万用表的选择开关是一个多档位的旋转开关。用来选择测量项目和量程。一般的万用表测量项目包括:“mA”;直流电流、“V(-)":直流电压、“V(~)”:交流电压、“Ω”:电阻。每个测量项目又划分为几个不同的量程以供选择。 表笔和表笔插孔 表笔分为红、黑二只。使用时应将红色表笔插入标有“+”号的插孔,黑色表笔插入标有“-”号的插孔。 ...
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