F1ANNEX VIIMETHOD OF MEASUREMENT OF RADIATED BROADBAND ELECTROMAGNETIC EMISSIONS FROM ELECTRICAL/ELECTRONIC SUB-ASSEMBLIES
6.Frequencies
6.1.
Measurements
Measurements shall be made throughout the 30 to 1 000 MHz frequency range. An ESA is considered as very likely to satisfy the required limits over the whole frequency range if it satisfies them at the following 13 frequencies in the range, e.g.: 45, 65, 90, 120, 150, 190, 230, 280, 380, 450, 600, 750 and 900 MHz.
In the event that the limit is exceeded during the test, investigations shall be made to ensure that this is due to the ESA and not to background radiation.
6.1.1.
The limits apply thorughout the frequency range 30 to 1 000 MHz.
6.1.2.
Measurements can be performed with either quasi-peak or peak detectors. The limits given in paragraphs 6.2 and 6.5 are for quasi-peak. If peak is used, add 38 dB for 1 MHz band width or subtract 22 dB for 1 kHz band width.
6.2.
Tolerances
Spot frequency(MHz) | Tolerance(MHz) |
|---|---|
45, 65, 90, 120, 150, 190 and 230 | ± 5 |
280, 380, 450, 600, 750 and 900 | ± 20 |
The tolerances apply to frequencies quoted and are intended to avoid interference from transmissions operating on or near the nominal spot frequencies during the time of measurement.
Substituted by Commission Directive 2000/2/EC of 14 January 2000 adapting to technical progress Council Directive 75/322/EEC relating to the suppression of radio interference produced by spark-ignition engines fitted to wheeled agricultural or forestry tractors and Council Directive 74/150/EEC relating to the type-approval of wheeled agricultural or forestry tractors (Text with EEA relevance).