SN EN 60268-3 : 2000

1 Scope
2 Normative references
3 Conditions
   3.1 Rated conditions and standard measuring conditions
   3.2 Other conditions
4 Classes of operation
5 Interchangeable parts
6 Automatic controls
7 Power supply
8 Position of the volume controls
9 Pre-conditioning for measurements
10 Series of measurements
11 Variable consumption apparatus
12 Marking
13 Operating environment
14 Characteristics to be specified, and their methods
   of measurement
   14.1 Power supply characteristics
   14.2 Tolerance of (long-term) power supply voltage
         variations
   14.3 Tolerance of power supply frequency variations
   14.4 Tolerance of power supply harmonics and ripple
   14.5 Input characteristics
   14.6 Output characteristics
   14.7 Limiting characteristics
   14.8 Characteristics of protection circuits
   14.9 Sustaining-time for rated output voltage or power
   14.10 Gain
   14.11 Response
   14.12 Amplitude non-linearity
   14.13 Noise
   14.14 Hum
   14.15 Balanced inputs and outputs
   14.16 Cross-talk and separation in multi-channel amplifiers
   14.17 Gain and phase differences between channels in
         multi-channel amplifiers
   14.18 Dimensions and mass, characteristics to be specified
Annex A (informative) Balanced interfaces
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Applies to analogue amplifiers and the analogue parts of digital/analogue amplifiers that form part of a sound system for professional or household applications. Specifies the characteristics to be included in specifications of amplifiers and the corresponding methods of measurement.