IEC 60263:2020 绘制频率特性和极坐标图的尺度和大小
标准编号：IEC 60263:2020
中文名称：绘制频率特性和极坐标图的尺度和大小
英文名称：Scales and sizes for plotting frequency characteristics and polar diagrams
发布日期：2020-06-26
标准范围
IEC 60263:2020规定了以分贝与对数频率轴表示的对数或电平特性的标准纵横比以及电平极坐标图半径的范围。应用包括硬拷贝打印输出、电子文件（例如，PDF文件）、科学出版物、计算机程序和应用程序中的屏幕显示以及标准中的图表。符合本文件要求的图表信息示例见附录A。尽管在本文档的范围之外，具有线性y轴相对于对数频率(例如，相位、群延迟等)的图通常伴随在本文档的规范部分中描述的水平的标准纵横比图。这些在资料性附件B中进行了描述。IEC 60263:2020取消并取代了1982年出版的第三版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)范围扩大到包括电子文件(例如，PDF)、科学出版物、其他标准中的图表以及程序和应用程序中的屏幕显示；b)增加了术语和定义条款；c)已经添加了20dB/十年和0、5、1、1、25和2、5个十年/十年的纵横比；d)对于绝对电平的极坐标图，规定了60 dB或30 dB的范围；为相对电平的极坐标图规定了30 dB范围；e)由于现在大多数图表都是计算机生成的，因此公差和尺寸已被删除；f)所有信息性数字都已用当代实例进行了更新；g)增加了关于线性y轴与对数频率的信息的信息附件。
IEC 60263:2020 specifies standard aspect ratios for logarithmic or level characteristics expressed in decibels versus a logarithmic frequency axis and ranges for the radius of polar diagrams of level. Applications include hard copy printouts, electronic files (e.g., PDF files), scientific publications, screen displays in computer programs and apps, as well as graphs in standards.
Informative examples of graphs that conform to the requirements in this document are found in Annex A.
Although outside the scope of this document, graphs with a linear y-axis versus logarithmic frequency (e.g., phase, group delay, etc.) often accompany the standard aspect ratio graphs of level described in the normative part of this document. These are described in informative Annex B.
IEC 60263:2020 cancels and replaces the third edition published in 1982. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the scope is expanded to include electronic files (e.g., PDF), scientific publications, graphs in other standards, and screen displays in programs and apps;
b) a Terms and Definitions clause has been added;
c) aspect ratios of 20 dB/decade, and 0,5, 1, 1,25, and 2,5 decades/decade have been added;
d) ranges of 60 dB or 30 dB are specified for polar plots of absolute level; a 30 dB range is specified for polar plots of relative level;
e) as most graphs are now computer generated, tolerances and sizes have been removed;
f) all informative figures have been updated with contemporary examples;
g) an informative annex with information about linear y-axis vs. logarithmic frequency has been added.
标准预览图
