IEC 60263 Ed. 3.0現行
Scales and sizes for plotting frequency characteristics and polar diagrams
出版：International Electrotechnical Committee
專家解讀視頻
Specifies standard proportions for the scales for plotting frequency characteristics and polar diagrams. Does not apply to audiograms.
SS IEC 263 Ed. 1 (1986) - Identical
UNE 20602:1978 - Identical
BS 6397:1983 - Equivalent
NFC 97 030:1970 - Identical
NBN C 92 210:1981 - Identical
DIN IEC 60263 (1999-08) - Identical
NEN 10263:1983 - Identical
