IEEE C63.4-1981
voltage electrical and electronic equipment in the range of 10 kHz to 1 GHz
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About This Item
C63.4-1981 is a technical standard for voltage electrical and electronic equipment in the range of 10 kHz to 1 GHz, addressing how emissions-related measurements are approached across that frequency span. It is a Superseded document, but it remains relevant for understanding older compliance methods and historical design expectations in fields, waves and electromagnetics. For engineers working with signal processing and analysis, C63.4-1981 provides a useful reference point for evaluating test practice and equipment behavior.
About C63.4-1981
This standard focuses on measurement conditions and technical requirements associated with electrical and electronic equipment operating or being evaluated from 10 kHz to 1 GHz. In practical terms, C63.4-1981 is concerned with how voltage-related tests are handled in the context of electromagnetic emissions and related analysis. Because it is superseded, it is most often used as a reference for legacy documentation, historical comparison, or when reviewing older compliance files and design records.
Where is C63.4-1981 used?
C63.4-1981 is typically used where electrical or electronic products must be assessed for behavior across a wide frequency range, especially in laboratory and pre-compliance testing environments. It may apply to measurement setups for control equipment, communications hardware, industrial electronics, and other systems where emissions or voltage behavior must be characterized consistently. The standard is also useful in document review, test planning, and interpreting legacy engineering data tied to older product generations.
Importance in practice
In practice, the value of C63.4-1981 lies in consistency. A defined measurement approach helps reduce ambiguity in compliance testing, supports repeatable results, and makes it easier to compare data across projects or facilities. For procurement and engineering teams, it can clarify which historical test basis was used and lower the risk of misreading older reports. As a superseded standard, C63.4-1981 is especially important when maintaining traceability for legacy products or archived technical documentation.
- Voltage-related measurement context
- 10 kHz to 1 GHz frequency range
- Legacy compliance and documentation reference
- Electromagnetic test and analysis focus
- Publication Date: 1981
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Fields, Waves and Electromagnetics; Signal Processing and Analysis
- Official IEEE: Doi link
- New Version Available: C63.4 (2017)
- Previous Version: C63.4 (2014)
- Previous Version: C63.4 (2009)
- Previous Version: C63.4 (2004)
- Previous Version: C63.4 (2001)
- Previous Version: C63.4 (1992)
- Previous Version: C63.4 (1991)
- Previous Version: C63.4 (1989)
- This Version: C63.4 (1981)
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