Illustrations and functional depict

Box content

• 1 x Active speaker(with cable)

• 1 x Passive speaker(with cable)

• 1 x User's manual

1. Passive speaker 5. Volume down

2. Active speaker 6. Mute key

3. In line control pad 7. Power indicator

4. Volume up 8. USB plug

Operational guidance

1 .Connect the USB connecting cable attached to the back panel of the active speaker to your PC/laptop.

If you connect the system to your PC / laptop for the first time, all required USB device drivers would be

installed automatically, and this may take some time, 2. Adjust the volume to a comfortable level, and then you're ready to enjoy the music loaded in your computer.

Note: R18 USB can only work perfectly with Windows 2000 / XP / Vista / Mac OS X and more advance operating systems.

Specification RMS

Power output: 1.2W x 2

Satellite: (THD = 10%, f0= 1 kHz)

Signal to noise ratio: >80 dBA

Distortion: <2%

Input type: USB

Input sensitivity: 1000±50 mV

Adjustment: Master volume control keys on the in-line control pad

Speaker unit: 50 x 90 mm, magnetically shielded, 4ohm

Dimension: 85 * 166 x 110 mm (W x H x D)

Net weight: Approx 1 kg

Gross weight: Approx 1.3 kg

Warnings:

•Refer to qualified personnel for servicing.

•Please remove the USB plug from your PC /laptop if the system is unused for long period of time.

•Please do not expose the system to rain or moisture.

If you have any further questions or concerns regarding Edifier Products

Please visit our website at: www.edifier.com,

or email Edifier Support for further assistance at: [e-mail],

If you prefer, you may contact us by phone, Toll Free: 1-877-EDIFIER (334-3437).

Питання для самоконтролю:

1 .Is it necessary to remove the plug from the mains supply before cleaning the machine?

2. Should the device be used, if there is damage of any kind?

3. Can we use device with wet or moist hand?

Рекомендована література:

Полякова Т.Ю Английский язык для инженеров.Учебник .М.: Bысшая школа, 2003.- 243 с

Дидактичне забезпечення : інструкції з використання електроприладів , словники.

7 Самостійна робота №7

Тема: Технічний переклад та переказ тексту за фахом: «Ураження електричним струмом»

Завдання до самостійної роботи:

1. Скласти словник незнайомих слів.

Наприклад:

Слово	Транскрипція	Переклад
frequency	[`frikwənsi]	частота

2. Вивчити слова на пам'ять

3. Перекласти текст письмово українською мовою

4. Скласти анотацію англійською мовою (письмово)

5. Переказати текст згідно анотації.

“Electric shock”

The strength of current depends on both the voltage and on the resistance in a circuit. A current of 50 mA is dangerous for a man and a current of 100 mA and higher is lethal.

Earthing system serves to protect attending personnel from electric shocks when voltage appears on parts that are normally dead.

The risk of an electric shock decreases with decreasing voltage. In wet and hot atmosphere the risk of electric shock increases. Safe voltage for circuits used in dry atmosphere is under 36 V. When the power is on contacts with live conductors fiame. Thus measures are taken to protect attending personnel from contacts with live parts of installations under voltage.

The danger of electric shock disappears provided the metal parts of installations under voltage are connected with ground by means of safety earthing.

Connecting to ground is made by means of earthing electrodes which are connected directly with ground.

The insulation resistance of any installation should be regularly checked by means of measuring devices. The faulty parts should be detected, eliminated, and replaced by new ones.