Lenovo A680 Руководство пользователя - Страница 13

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Lenovo Phone has a headphone connector. Always

use the headphone connector for headphones (also

called a headset) or earphones.

CAUTION

Excessive sound pressure from earphones and headphones can cause

hearing loss. Adjustment of the equalizer to maximum increases the

earphone and headphone output voltage and the sound pressure level.

Therefore, to protect your hearing, adjust the equalizer to an appropriate

level.

Excessive use of headphones or earphones for a long

period of time at high volume can be dangerous if the

output of the headphone or earphone connectors do

not comply with specifications of EN 50332-2.

The headphone output connector of Lenovo Phone

complies with EN 50332-2 Sub clause 7. This

specification limits Lenovo Phone's maximum wide

band true RMS output voltage to 150 mV. To help

protect against hearing loss, ensure that the

headphones or earphones you use also comply with

EN 50332-2 (Clause 7 limits) for a wide band

characteristic voltage of 75 mV. Using headphones that

do not comply with EN 50332-2 can be dangerous due

to excessive sound pressure levels.

If Lenovo Phone came with headphones or earphones

in the package, as a set, the combination of the

headphones or earphones and Lenovo Phone already

complies with the specifications of EN 50332-1. If

different headphones or earphones are used, ensure

that they comply with EN 50332-1 (Clause 6.5