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As the rules change or new procedures are developed, please note that these interpretation and/or guidance may not apply; you should always refer to the latest rules and guidance documents to determine what equipment authorization procedures should be followed. For the latest guidance on specific topics or you don't know where to start, please feel free to contact GTG experts.

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How can GTG assist you with the tests on stereo system?

As GTG Group’s strategy updates, some of the below listed test items may no longer be available, please contact us for the latest information.

(1) Electrical safety test

  • Grounding test: this test checks to ensure that the stereo system is properly grounded. Grounding is essential as it helps prevent electric shock in case of a short circuit or electrical fault.
  • Insulation test: the test is conducted to check if the electrical components of the stereo system are properly insulated. Insulation is crucial as it prevents electric shock and ensures that the system is safe to use.
  • Leakage current test: the test is conducted to check if any current is leaking from the stereo system. Current leakage can be dangerous as it can cause electric shock.
  • Dielectric strength test: the test checks the ability of the stereo system to withstand a high voltage without breaking down. This test ensures that the system is safe to use and can withstand any electrical surges.
  • Earth continuity test: the test checks if the earth connection of the stereo system is properly connected. This test is essential as it ensures that any electrical faults or surges are safely grounded.
  • Power cord strain relief test: the test checks if the power cord is securely attached to the stereo system. This test is important as it prevents the cord from getting disconnected accidentally, which can cause a safety hazard.
  • Power consumption test: the test checks how much power the stereo system consumes. This test ensures that the system is not consuming more power than it is designed to handle, which can cause overheating and other safety hazards.

(2) EMC test

  • Radiated emissions test: this test is designed to measure the amount of electromagnetic radiation emitted by the stereo system. The test is conducted by placing the stereo system in a shielded chamber and measuring the electromagnetic radiation emitted by the system.
  • Conducted emissions test: the test is designed to measure the amount of electromagnetic radiation emitted by the power supply and other internal components of the stereo system. The test is performed by connecting the stereo system to a spectrum analyzer, which measures the electromagnetic radiation emitted by the system.
  • Electrostatic discharge (ESD) test: the test is designed to simulate the effect of static electricity on the stereo system. The test is performed by applying a high voltage discharge to the stereo system and measuring its response to the discharge.
  • Radiated immunity test: the test is designed to measure the stereo system’s ability to withstand electromagnetic interference from other sources. The test is performed by exposing the stereo system to a high level of electromagnetic radiation and measuring its response to the radiation.
  • Conducted immunity test: the test is designed to measure the stereo system’s ability to withstand electromagnetic interference from the power supply and other internal components. The test is performed by injecting a high level of electromagnetic radiation into the power supply and measuring its response to the radiation.
  • Magnetic field immunity test: the test is designed to measure the stereo system’s ability to withstand magnetic fields. The test is performed by exposing the stereo system to a strong magnetic field and measuring its response to the field.
  • Voltage dip and interruption test: the test is designed to measure the stereo system’s ability to withstand voltage dips and interruptions in the power supply. The test is performed by simulating voltage dips and interruptions in the power supply and measuring the stereo system’s response to the dips and interruptions.
  • Harmonic current emissions test: the test is designed to measure the amount of harmonic current emitted by the stereo system. The test is performed by connecting the stereo system to a power analyzer, which measures the harmonic current emitted by the system.
  • Flicker test: the test is designed to measure the amount of flicker emitted by the stereo system. The test is performed by connecting the stereo system to a power analyzer, which measures the flicker emitted by the system.
  • Surge test: the test is designed to measure the stereo system’s ability to withstand power surges. The test is performed by applying a high voltage surge to the stereo system and measuring its response to the surge.
  • Voltage variation test: the test is designed to measure the stereo system’s ability to withstand voltage variations in the power supply. The test is performed by simulating voltage variations in the power supply and measuring the stereo system’s response to the variations.
  • Power frequency magnetic field test: the test is designed to measure the stereo system’s ability to withstand power frequency magnetic fields. The test is performed by exposing the stereo system to a power frequency magnetic field and measuring its response to the field.

(3) Energy efficiency test

  • Energy consumption: this test measures the amount of power the stereo consumes when in use. The power consumption is measured in watts and is usually indicated on the product label. The lower the watts consumption, the more energy-efficient the stereo is.
  • Standby mode: when not in use, stereos go into standby mode. In this mode, they use minimal power, but it is still important to ensure that the power consumption is as low as possible. This is because stereos spend most of their time in standby mode.
  • Power saving mode: power-saving mode is also tested for energy efficiency. This mode is designed to reduce the power consumption of the stereo when it is not in use for an extended period. The power-saving mode activates after a specific period of inactivity, and it reduces the power consumption to a minimum.

(4) Mechanical tests

  • Drop test: the test is conducted to check the durability of the stereo. The stereo is dropped from a certain height, and the impact is evaluated. This test is conducted to ensure that the stereo can withstand accidental drops and impacts.
  • Vibration test: the test is conducted to evaluate the ability of the stereo to withstand vibrations. The stereo is subjected to different frequencies and amplitudes of vibrations. This test is conducted to ensure that the stereo can withstand vibrations from different sources such as vehicles and loud music.
  • Tensile test: the test is conducted to evaluate the ability of the stereo to withstand tension. The stereo is subjected to different levels of tension to ensure that it can function correctly in environments with high tension.
  • Compression test: the test is conducted to evaluate the ability of the stereo to withstand compression. The stereo is subjected to different levels of compression to ensure that it can function correctly in environments with high compression.
  • Fatigue test: the test is conducted to evaluate the ability of the stereo to withstand repeated stress cycles. The stereo is subjected to different stress cycles to ensure that it can function correctly over an extended period.

(5) Environmental tests

Temperature test: the test is conducted to evaluate the ability of the stereo to withstand extreme temperatures. The stereo is subjected to high and low temperatures to ensure that it can function correctly in different temperature conditions.

  • Humidity test: the test is conducted to evaluate the ability of the stereo to withstand high humidity levels. The stereo is subjected to high humidity levels to ensure that it can function correctly in different humidity conditions.
  • Salt spray test: the test is conducted to evaluate the ability of the stereo to withstand corrosion caused by saltwater. The stereo is subjected to saltwater spray to ensure that it can function correctly in marine environments.
  • Dust test: the test is conducted to evaluate the ability of the stereo to withstand dust and dirt. The stereo is subjected to different levels of dust and dirt to ensure that it can function correctly in dusty environments.
  • Water resistance test: the test is conducted to evaluate the ability of the stereo to withstand water. The stereo is subjected to different levels of water to ensure that it can function correctly in wet environments.
  • Impact test: the test is conducted to evaluate the ability of the stereo to withstand impacts. The stereo is subjected to different levels of impact to ensure that it can function correctly in impact-prone environments.
Got questions on stereo system tests? We are always here to help, just ask!

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How can GTG assist you with the certifications or markings for stereo system?

As GTG Group’s strategy updates, some of the below listed certifications or markings may no longer be available, please contact us for the latest information.

(1) CE marking

The CE marking is a mandatory certification that indicates that the stereo meets the health, safety, and environmental protection standards set by the European Union. This certification is crucial because it ensures that the stereo is safe to use and does not pose any health risks to users.

(2) FCC certification

The Federal Communications Commission (FCC) certification indicates that the stereo meets the electromagnetic compatibility (EMC) requirements set by the FCC. This means that the stereo does not emit harmful levels of electromagnetic radiation that can interfere with other electronic devices.

(3) UL marking

The Underwriters Laboratories (UL) marking is a safety certification that indicates that the stereo has undergone rigorous safety testing and meets specific safety standards. This certification is essential because it ensures that the stereo is safe to use and does not pose any fire or electrical hazards.

(4) RoHS Compliant

The Restriction of Hazardous Substances (RoHS) certification ensures that the product does not contain any hazardous substances such as lead, mercury, cadmium, and other harmful materials. If your stereo is RoHS compliant, it means that it meets the environmental standards set by the EU and other countries.

(5) Energy Star certification

The Energy Star certification is an energy efficiency certification that indicates that the stereo meets specific energy efficiency requirements. This certification is important because it ensures that the stereo is energy-efficient and does not consume too much power.

Got questions on stereo system certification? We are always here to help, just ask!

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Why the biggest brands trust GTG Group?

GTG Group (Global Testing Group) is a certification company that offers testing and certification services to different industries. Our expertise in stereo system testing and certification has made us a trusted name in the industry.

(1) Independent and impartial testing

GTG Group is a third-party testing company, which means we are not affiliated with any specific manufacturer. This impartiality can provide camera manufacturers and consumers with confidence in the accuracy and reliability of the testing process, and ensure that the camera meets the required standards.

(2) Confidentiality and security

GTG Group understands the importance of confidentiality and security when it comes to testing and certification. We ensure that our clients’ data and information are kept confidential and secure at all times. This ensures that our clients’ intellectual property and trade secrets are protected.

Contact GTG Group today for stereo system testing and certification to avoid any legal issues that may arise from using a faulty adapter.

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