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The EMC standard of EN 55022:1998/A1:2000 /A2:2003 and EN 55022:2006 under 1999/5/EC R&TTE directive, specifies Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement, will be withdrawn on 01 October, 2011. After this date, the superseded standard of EN55022:2006/A1:2007 must be complied in order to presume of conformity.
Have regard to the latest version of EN 55022:2006/ A1:2007, the test frequency range and test limit of Radiated Emission are amended:
The new conditional testing procedure is stated as below :
- If the highest frequency of the internal sources of the EUT is less than 108MHz, the measurement shall only be made up to 1GHz.
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If the highest frequency of the internal sources of the EUT is between 108MHz and 500MHz, the measurement shall only be made up to 2GHz.
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If the highest frequency of the internal sources of the EUT is between 500MHz and 1GHz, the measurement shall only be made up to 5GHz.
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If the highest frequency of the internal sources of the EUT is above 1GHz, the measurement shall be made up to 5 times the highest frequency or 6GHz, whichever is less.
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Limits for Radiated Disturbance of Class A ITE at a measurement distance of 3m.
| Frequency Range GHz |
Average Limit dB(µV/m) |
Peak Limit dB(µV/m) |
| 1 to 3 |
56 |
76 |
| 3 to 6 |
60 |
80 |
| NOTE: The lower limit applies at the transition frequency. |
Limits for Radiated Disturbance of Class B ITE at a measurement distance of 3m.
| Frequency Range GHz |
Average Limit dB(µV/m) |
Peak Limit dB(µV/m) |
| 1 to 3 |
50 |
70 |
| 3 to 6 |
54 |
74 |
| NOTE: The lower limit applies at the transition frequency. |
If the conflicting standards are still applied, please kindly proceed the standard upgrade to EN55022:2006/ A1:2007 right now to show compliance of article 3.1(b) of R&TTE directive.
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Shenzhen 深圳 |
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Mr. Star Zuo |
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Email:star.zuo@tuv-sud.cn |
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Tel:+86 (0) 755 88286998 (Ext.409) |
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Mobile:+86 (0) 13510527744 |
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Established in Germany 140 years ago, TÜV SÜD is one of the world's leading technical services providers, offering knowledge services, inspections, testing, expert opinions, certification and training. Approximately 16,000 employees at over 600 locations worldwide provide technology, system and know-how optimization.
TÜV SÜD has been doing business in China for nearly 20 years and has provided service for more than 10,000 clients.
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