CISPR TR 29:2020
(Main)Television broadcast receivers and associated equipment - Immunity characteristics - Methods of objective picture assessment
Television broadcast receivers and associated equipment - Immunity characteristics - Methods of objective picture assessment
CISPR TR 29:2020 is available as CISPR TR 29:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
CISPR TR 29:2020, which is a technical report, describes the algorithms used for objective picture assessment in immunity tests of analogue and digital TV broadcast receivers and associated equipment. The algorithms used were developed on the basis of the specifications originally included in Annex K of CISPR 20:2002/AMD2:2004, the later edition of which has been replaced by CISPR 35:2016. The method of objective picture assessment described in that annex employs the same interference mechanism and is based on the same wanted signal definition as specified in CISPR 35 for subjective picture assessment. Objective picture assessment, therefore, constitutes an alternative to the subjective method and offers the advantage of direct correlation to the subjective method. This second edition cancels and replaces the first edition published in 2004. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- update of the references, and
- editorial improvements.
General Information
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- to establish requirements which provide an adequate level of intrinsic immunity so that the MME will operate as intended in its environment in the frequency range 0 kHz to 400 GHz; and
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- testing using multiple test signals has been described;
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- household appliances or similar equipment;
- electric tools;
- similar equipment;
- Refer to the Scope of the document for examples of equipment.
Included in the scope of this document are also microwave ovens for domestic use or catering.
Equipment which incorporate radio transmit/receive functions are included in the scope of this document. NOTE: For handling cases where equipment under the scope of this document is combined with transmit and/or receive radio functions, see Clause 8.
Excluded from the scope of this document are:
- equipment for which all electromagnetic immunity requirements are explicitly formulated in other CISPR or IEC standards;
- equipment intended to be part of the fixed electrical installation of buildings (e.g. fuses, circuit breakers, cables and switches);
- medical electrical equipment, including those in the scope of CISPR 14-1;
- equipment used only in industrial environment;
- equipment intended to be used exclusively in locations where special electromagnetic conditions exist (e.g. high electromagnetic fields nearby broadcast transmitting stations or high energy pulses nearby power generation stations);
- equipment intended to be used exclusively on a vehicle, ship, boat or aircraft;
- the effects of electromagnetic phenomena relating to the safety of apparatus (see IEC 60335 series);
Also excluded from the scope of this document is AC single-phase equipment with a rated voltage higher than 250 V between phase and neutral and AC multi-phase equipment with rated voltage higher than 480 V. Abnormal operation of the equipment, such as simulated faults in the electric circuitry for testing purposes, is not taken into consideration.
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b) an advanced categorisation of equipment;
c) revision of general test conditions and addition of new specific test conditions (e.g. for robotic equipment);
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The requirements of this publication apply at all frequencies and for all levels of radiated disturbances within the CISPR indicating range of the measuring equipment.
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Keywords: radiated disturbances, frequency range 9 kHz to 18 GHz
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