Council Directive of 20 May 1975 on the suppression of radio interference produced by agricultural or forestry tractors (electromagnetic compatibility) (75/322/EEC) (repealed)

[F1 5. Antenna type, position and orientation U.K.

5.1. Antenna type U.K.

Any antenna may be used provided that it can be normalized to the reference antenna. The method described in the CISPR 12 publication, Edition 3, Appendix A, may be used to calibrate the antenna.

5.2. Height and distance of measurement U.K.

5.2.1. Height U.K.

5.2.1.1. 10 m test U.K.

The phase centre of the antenna shall be 3,00 ± 0,05 m above the plane on which the vehicle rests.

5.2.1.2. 3 m test U.K.

The phase centre of the antenna shall be 1,80 ± 0,05 m above the plane on which the vehicle rests.

5.2.1.3. No part of any antenna's receiving elements shall be closer than 0,25 m to the plane on which the vehicle rests. U.K.

5.2.2. Distance of measurement U.K.

5.2.2.1. 10 m test U.K.

The horizontal distance from the tip or other appropriate point of the antenna defined during the normalization procedure described in paragraph 5.1 to this Annex to the outer body surface of the vehicle shall be 10,0 ± 0,2 m.

5.2.2.2. 3 m test U.K.

The horizontal distance from the tip or other appropriate point of the antenna defined during the normalization procedure described in paragraph 5.1 to this Annex to the outer body surface of the vehicle shall be 3,00 ± 0,05 m.

5.2.2.3. If the test is carried out in a facility enclosed for radio frequency electromagnetic screening purposes, the antenna's receiving elements shall be no closer than 1,0 m to any radio absorbent material and no closer than 1,5 m to the wall of the enclosed facility. There must be no absorbent material between the receiving antenna and vehicle under test. U.K.

5.3. Antenna location relative to vehicle U.K.

The antenna shall be located successively on the left and right-hand sides of the vehicle with the antenna parallel to the plane of longitudinal symmetry of the vehicle and in line with the engine mid-point (see Figure 2 in Appendix 1 to Annex IV).

5.4. Antenna position U.K.

At each of the measuring points, readings shall be taken both with the antenna in a horizontal and in a vertical polarization (see Figure 2 in Appendix 1 to Annex IV).

5.5. Readings U.K.

The maximum of the four readings taken in accordance with paragraphs 5.3 and 5.4 at each spot frequency shall be taken as the characteristic reading at the frequency at which the measurements are made.]

Textual Amendments

F1 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).