General specification for the wireless hearing system equipment for the deaf children
1 Scope
This standard specifies the technical conditions, measurement methods, inspection rules, marking, packaging, transport and storage of the wireless hearing system equipment for the deaf children.
This standard is applicable to wireless (frequency modulation transmitting and receiving, i.e. FM type, audio frequency induction, and the hybrid of the two, excluding infrared transmission type) hearing and speech training equipment for the deaf children.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 2423.1 Environmental testing for electric and electronic products - Part 2: Test methods- Tests A: Cold
GB/T 2423.2 Environmental testing for electric and electronic products - Part 2: Test methods - Test B: Dry heat
GB/T 2423.3 Environmental testing for electric and electronic products - Part 2: Testing method - Test Cab: Damp heat, steady state
GB/T 2423.8 Environmental testing for electric and electronic products - Part 2: Test methods - Test Ed: Free fall
GB/T 2423.10 Environmental testing for electric and electronic products - Part 2: Tests methods - Test Fc: Vibration (sinusoidal)
GB/T 6657 Measurement of electroacoustic characteristics of hearing aids
GB 8898-2001 Audio, video and similar electronic apparatus - Safety requirements
GB/T 9001-1988 Method of measurement on audio amplifier
GB/T 9388 Methods of measurement for wireless microphone systems
GB/T 9401 Methods of measurement for microphones
GB/T 11454 Magnetic field strength of audio-frequency induction loops for hearing aid purposes
GB 12641 Safety requirements for handling and operation of audiovisual teaching equipment and systems
IEC 118-12 Hearing aids - Part 12: Dimensions of electrical connector systems
3 Terms and definitions
For the purpose of this standard, the following terms and definitions apply.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, transport and storage
