CM•4 Companion Mics ® Multi-Talker Noise Reduction System User Guide
TABLE OF CONTENTS About Companion Mics..................................................................1 Benefits...........................................................................................1 Important Privacy Notice to All Users............................................1 System Configurations...................................................................2 Identification of Controls................................................................3 Listening Options .....................
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.
SYSTEM CONFIGURATIONS • • • • • • • 2, 3 or 4 individual CM4 units 1-4 pairs of 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 CM4 Carrying case AC adapter ER-6i high-fidelity Noise-isolating Earphones Charging cable Shown with units attached 4 2 Neckloop
Identification of controls OFF and Volume Down ON and Volume Up Earphone/Neckloop Jack Shirt Clip 5 3
LISTENING OPTIONS • ER-6i noise-isolating earphones • Neckloop with hearing aid or cochlear implant on t-coil mode • Direct audio input (DAI) on hearing aids and cochlear implants Neckloop OPERATION • Each unit has two buttons: ON/Volume Up and OFF/Volume Down • Each unit has two LEDs ° Green: ON (off when unit is off) ° Amber: Charging (off when unit is fully charged) • Units are charged through the earphone jacks Pairing Pairing is done at factory and is not required by the user.
Disconnecting and Reconnecting • Any unit (except the Master Unit) can be disconnected from the system and reconnected by simply pressing the ON and OFF buttons. When the green LED is off, the unit is off. • If the LED is blinking green, check the Master Unit. It needs to be on during use. • If any unit will not turn on, it may need to be recharged.
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 into the AC adapter. Step 3. Plug the AC adapter into a wall socket. • While charging, an amber light will illuminate on each unit. The light on the units will remain amber until the units are fully charged. • When the units are charged the amber lights will go out. • A complete charge (from “empty”) takes about 2-3 hours.
SPECIFICATIONS Size: 2" x 1" (52 x 26 mm) 1/2" thick (12.7 mm) without clip Weight: About one-half ounce Talk Time: About six to ten hours depending on use 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: Output: 3.
ABOUT ETYMOTIC RESEARCH Etymotic Research is an engineering-driven company. Its mission, to develop products to measure, improve and protect hearing, has not changed in over 30 years. New product development reflects our commitment to improve the lives of those with hearing loss and to enhance the listening experience of musicians and music lovers everywhere. Scientists, engineers, and audiologists working together have generated more than 100 patents issued or pending.
FCC AND OTHER INFORMATION This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. 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. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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.
