Part IntroductionF1

This Schedule contains the methods to measure airborne noise that are to be used to determine the sound power levels of equipment for use outdoors.

Part A of this Schedule lays down the basic noise emission standard and general supplements to the basic noise emission standard to measure the sound pressure level on a measurement surface enveloping the noise source and to calculate the sound power level produced by that source.

Part B of this Schedule lays down the equipment specific noise test code which is presented either as a reference to a specific standard or as a description of the applicable testing and operating conditions, including:

1. (a)

   the test environment;

2. (b)

   the value of the environmental correction (K_2A);

3. (c)

   the shape and dimensions of the measurement surface;

4. (d)

   the number and position of microphones to be used;

5. (e)

   requirements relating to mounting and installation of the equipment;

6. (f)

   a method to calculate the resulting sound power levels in the event that several tests with different operating conditions are to be used.

When testing specific types of equipment, manufacturers or their authorised representatives shall use the basic noise emission standard and the general supplements of Part A of this Schedule, and the equipment-specific noise test code laid down in Part B. Noise test codes in Part B are meant to supplement the specifications laid down in Part A taking into account the characteristics of the different equipment categories. When noise test codes in Part B provide for the possibility to choose between different alternative technical solutions, manufacturers or their authorised representatives shall use those that are in line with the specifications laid down in Part A. In case of conflict between Part A and Part B, Part B provisions shall take precedence.

Where the noise test codes laid down in Part B, or in the standards referred to in Part B, would not be applicable for some models of equipment within the equipment category, manufacturers or their authorised representatives shall determine the guaranteed sound power level in accordance with the basic noise emission standard and the applicable supplements indicated in Part A.