As we all know, listening to loud volumes for a long time will cause damage to the ears, and EN50332 is to prevent this damage, EN50332 stipulates the sound pressure, output voltage, and audio stability test of portable ** devices. The scope of testing includes all portable audio devices with headphones or headphone sockets and individual headphone products. EN50332 test.
Test classification for EN50332:
EN50332 is divided into two parts, EN5032-1EN50332-2, and EN50332-2 is divided into EN5032-2-1 (** device output voltage) and EN5032-2-2 (earphone broadband characteristic voltage test). The EN5032-1 includes a maximum sound pressure level measurement, and for the performance of both the device and the earphone, the EN5032-2 includes two tests: the maximum output voltage of the two-player amplifier and the wideband characteristic output voltage of the earphone.
According to the standard, the measurement of the maximum sound pressure level needs to be repeated five times, and each time the headphones need to be removed and re-fixed. The average value is the final test result, and the maximum sound pressure level must not exceed 100dB. The maximum output voltage loads the electrical signal of the headphone jack to 32 The average time of the unweighted RMS measured on the load is more than 30s. Wide Band Characteristic Voltage (WBCV) refers to the voltage value of the input electrical signal in the DB when the sound pressure level at the earphone reaches 94. The standard stipulates that the maximum output voltage shall not be greater than 150mV, and the broadband characteristic voltage shall not be less than 75mV.
Mobile phones, **CD, MD, HD**, portable computers, portable TVs, etc., or portable radios, cassette recorders, etc.; en50332-2:2003
Mainly for portable audio** devices that do not come with headphones or headphones sold separately.
1.The product should be tested in an anechoic chamber (anechoic chamber) to avoid interference from ambient noise. The headset is mounted on a standard artificial ear, and the microphone is mounted on the artificial ear to collect the sound of the earphone. Audio**YSER analyzes and records the maximum sound pressure value (LAEQ) for each audio. The standard sound source used in the test was IEC60268-1.
2.The signal strength of the audio product** is 10dB for the Digital Signal (CD, **and -6dB for the Ogue Signal Cassette. FM radios require antennas to transmit passenger signals (-6dB) in order to receive. Adjust the speaker volume to the maximum volume, measure a total of 5 times, and take the average of the 5 times.
CE certification indicates that the headset product has met the safety requirements of the EU directives; It is the company's commitment to consumers, which increases consumers' trust in headphone products; Affixing CE iconic products will reduce the risk of selling in the European market. These risks include:
1.the risk of being detained and investigated by customs;
2.the risk of being investigated and dealt with by market surveillance authorities;
3.The risk of being charged by the same party for the purpose of competition.