March 2011 EMC Examiner Newsletter
Correcting for Duty Cycle in Pulsed Operation Transmitters
The LS Research Compliance Department frequently answers questions regarding application of a “relaxation factor” to a measurement for demonstrating compliance to FCC regulations. This article explains how a duty cycle correction factor provides an effective means of representing a true average emission in a pulsed operation transmitter. It explains how to recognize what a duty cycle correction factor is, when it can be applied, and how to calculate it correctly.
Published and Released Standards
CISPR 16-SER edition 1.0 (2010-12)
Specification for radio disturbance and immunity measuring apparatus and methods - ALL PARTS
CISPR 16-1-4 edition 3.0 (2010-12)
Corrigendum 1 – Specification for radio disturbance and immunity measuring apparatus and methods- Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements.
CISPR 16-2-1 edition 2.1 (2010-12)
Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-1: Methods of measurement of disturbances and immunity - Conducted disturbance measurements
IEC 61000-6-3 amendment 1 edition 2.0
Amendment 1- Electromagnetic (EMC) - Part 6-3: Generic Standards-Emission Standard for residential, commercial and light-industrial environments.
IEC 61000-6-4 amendment 1 edition 2.0
Amendment 1- Electromagnetic (EMC) - Part 6-4: Generic Standards-Emission Standard for industrial environments.