background image

1

ABOuT COmpANiON miCS

®

The Companion Mics project began in 1992. Before it was introduced  

in 2006, it went through five developmental phases: 1) ultra low-power 

digital transmission; 2) low-cost FM systems; 3) high-cost FM systems;  

4) low-power digital security-alarm systems; and 5) the 2006 version,  

a 2.4 GHz spread-spectrum (digital frequency hopping) system. None  

of the first four systems provided adequate bandwidth and/or sufficient  

signal-to-noise ratio.The present Companion Mics system has both. 

The Companion Mics system was developed to help those who have 

significant difficulty understanding conversation in background noise, 

such as encountered in restaurants and other noisy places. Our quality 

of life depends to a great extent on our ability to communicate with 

family and friends. When this ability is compromised, there is a tendency 

to withdraw. With the Companion Mics system, those who have been 

excluded from conversation in noisy places can enjoy social situations 

and fully participate again. 

The CM•4 Companion Mics system establishes a direct communication 

among all active units and bypasses the noise and reverberation of 

the local acoustic environment. The wireless technology used in the  

Companion Mics system is similar to that used by digital cordless 

phones and other wireless devices using the 2.4 GHz band.

BENEFiTS

The Companion Mics system enables up to four persons to listen and  

speak to each other. The microphones in this system give up to a 

ten-to-one decrease in the relative noise level that is heard by each 

listener, which makes it possible to carry on a normal conversation 

even in high levels of background noise. The units use lithium polymer 

rechargeable batteries. Battery life is 6-10 hours, which gives ample 

use time for most applications. A complete charge takes 2-3 hours. 

To conserve battery life, the system automatically times out and turns 

off after a period of inactivity. 

impOrTANT privACy NOTiCE TO ALL uSErS

It is easy to forget that you are wearing Companion Mics. If you leave 

the conversation, or want to have a private conversation with someone, 

be sure to disconnect from the system. The operating range of 

this system can be 150 feet or more, so even if you are across 

a room or away from the conversation, others may be able to 

hear you! 

Содержание Companion Mics CM-4

Страница 1: ...CM 4 Multi Talker Noise Reduction System Companion Mics User Guide ...

Страница 2: ... All Users 1 System Configurations 2 Identification of Controls 3 Listening Options 4 Operation 4 Interference 5 Operating Distance 5 Charging 6 Specifications 7 About Etymotic Research 8 Warranty 8 FCC and Other Information 9 FCC Health and Safety Information 9 Industry Canada 9 ...

Страница 3: ...shes a direct communication among all active units and bypasses the noise and reverberation of the local acoustic environment The wireless technology used in the Companion Mics system is similar to that used by digital cordless phones and other wireless devices using the 2 4 GHz band Benefits The Companion Mics system enables up to four persons to listen and speak to each other The microphones in ...

Страница 4: ... ER 6i earphones as specified by purchaser 1 4 Neckloop s as specified by purchaser AC adapter 4 unit charging cable Carrying Case User Guide Carrying case CM4 AC adapter Neckloop 2 Charging cable Shown with units attached ER 6i high fidelity Noise isolating Earphones ...

Страница 5: ...5 Identification of controls Shirt Clip ON and Volume Up OFF and Volume Down Earphone Neckloop Jack 3 ...

Страница 6: ...ch to be paired The units turn on independently but the Master Unit Unit 0 must be on at all times when the system is in use Once a unit forms an RF connection to at least one other unit both units will show a solid green light indicating that the system is functional Controls To turn ON Press and hold key for at least 2 seconds To turn OFF Press and hold key for at least 2 seconds VOLUME UP Press...

Страница 7: ...fier so that only the units in that system will connect with each other There can be many systems operating in the same area without interfering with each other RF Interference If there is significant RF interference complete recovery from the interference can be obtained by the following three steps Make sure the LED on the Master Unit is still green If not turn it back on Check all units Turn on...

Страница 8: ... not possible to overcharge the units They can be plugged in indefinitely without damaging the system Battery Life Battery life is 6 10 hours depending on use Auto Shut Off If the units maintain a connection the system automatically turns off after 4 hours CHARGING Step 1 Insert the 3 5 mm plug from the charging cable into the earphone jack on the CM4 Step 2 Plug the USB end of the charging cable ...

Страница 9: ...e Charging Connector 3 5mm jack to USB Charge Time About one hour to 80 full 2 hours to full Low Battery Time Amber light flutters when the battery capacity is about or less than 10 Audio Connector 3 5 mm stereo jack Output At least 120 to 6900 Hz audio bandwidth Separate stereo drivers mono signal 40 mW output into 16 ohms 1 V rms 5 output signal ...

Страница 10: ...Etymotic Research has an extensive sound laboratory that includes three anechoic chambers and a reverberation room Etymotic et im oh tik means true to the ear WARRANTY Etymotic Research Inc warrants this product against defects in material or workmanship for a period of one year from the date of original purchase from an authorized Etymotic distributor or reseller Etymotic will repair or replace t...

Страница 11: ...h Industry Canada licence exempt RSS standard s Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operation Le présent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autori...

Страница 12: ...etymotic research inc 61 Martin Lane Elk Grove Village IL 60007 www etymotic com 888 389 6684 2014 Companion Mics is a registered trademark of Etymotic Research Inc ER083115 A ...

Отзывы:

Похожие инструкции для Companion Mics CM-4