RWT-ER80Companion Bluetooth Mics

ETYMOTIC RESEAR CH, INC. Companion Mics ™ User Guide Listener Unit Talker Units Etymotic Research High fidelity, Noise- isolating Earphones Charging Unit On/Off Volume Control Earphone Jack On/Off Volume control (enabled only for special applications) 3 DESCRIPTION The Companion Mics TM system was developed for persons who have significant difficulty understanding conversation in background noise such as restaurants and public places. This system enables one, two or three talkers (four on special order) to speak to a single listener. The microphones in this system give a ten-to-one decrease in the relative noise level that is heard by the listener, which should make it possible to carry on a normal conversation, even for a listener with severe-to-profound loss of ability to hear in noise. Battery life is 8-10 hours between charges, which gives ample time for most applications. A complete charge takes 2-3 hours. INSTRUCTIONS STARTUP • Place units next to each other. • Turn on all units that will be used. - Talker Units:Press and hold the On/Off button until the green light blinks (approximately 1 second). - Listener Unit:Press and hold On/Off button until the green light blinks (approximately 1 second). • Wait until all lights glow steadily, indicating proper communication with each other. USE Instructions for the Listener: • Plug the earphone into the earphone jack on the Listener Unit (identified by a clear clasp on neck cord). • Adjust the volume control for a comfortable level. • Place the unit around the neck. • Adjust the neck cord so the unit rests comfortably under the chin. 4 • Adjust the volume control after all Talker Units are on. The Listener should be able to hear each Talker clearly, as if the Talkers were speaking into the Listener’s ear. Instructions for Talkers: • Place Talker Units (identified by a black clasp on neck cord) around the neck and adjust the cord so the unit rests comfortably just under the chin. VOLUME CONTROL (Up/Down Switch) The overall volume is adjusted on the Listener Unit only. For ease of identification, the top of the button (Up) has a ridge, the bottom part of the button (Down) has a groove. Holding the Up/Down button continuously increases or decreases the volume by four steps per second. TEMPORARY DISCONNECT Talkers can temporarily disconnect their units by pressing the On/Off button on the Talker Unit until the green light blinks (approximately one second). A tone in the earphone of the Listener Unit announces the disconnect.(If a disconnect occurs accidentally, the light on that Talker Unit will blink to signal the disconnect.) Reconnect To reconnect a Talker Unit, the Listener should press the On/Off button on the Listener Unit for 1-2 seconds. Interference If there is severe RF interference,complete recovery from the inter- ference can be obtained by the following three steps: 1. Turn on any Talker Units whose green lights are not already steady or blinking. 2. Turn off the Listener Unit by pressing the On/Off button for 1-2 seconds. 5 3. Turn the Listener Unit back on by pressing the button for 1-2 seconds. The units should reconnect in 8 seconds or less. OPERATING DISTANCE Under line-of-sight conditions out in the open, the units may operate over a distance of 150 feet or more. Indoors, where there are reflections, the units should maintain communication over a distance of 15 to 20 feet even if the Listener and Talkers occasionally turn their backs to each other. 5 BATTERY CHARGING To recharge, place units in the Charging Case. Note that a yellow light will illuminate on each unit. A complete charge takes 2-3 hours. It is not possible to overcharge the units.They can be left in the charger indefinitely without damaging the system.Battery life between full charges is 8-10 hours or longer. HOW DOES THE COMPANION MICS SYSTEM WORK? The Companion Mics system establishes a direct communication line between the Talkers’ microphones and the Listener’s receiver, which essentially bypasses the noise and reverberation of the local acoustic environment. Circuits in the Companion Mics system operate in the 2.4 GHz band,the same frequency used by today’s cordless phones.Rather than using a single frequency,where a competing signal might interfere, a frequency-hopping technique is used. By jumping quickly from frequency to frequency in a pseudo-random manner among 79 frequencies,the chance of interference from microwave ovens, other Companion Mics systems or Bluetooth is minimized, so that 10 or more sets can operate with little audible interference even if they are all in the same room.When the units are first turned on, the Listener Unit starts its repeating sequence of frequency hops while each Talker Unit waits for one or another of those frequencies until it receives a transmission containing the identification code from the Listener Unit. The units then lock together jumping from frequency to frequency. This process is repeated until all Talker Units lock on. Once all units are in communication with each other, the LED lights stop blinking and the Talkers are heard by the Listener. From then on, each Talker Unit is in constant communication with the Listener Unit. Volume control adjustments on the Listener Unit are sent to the Talker Units to set their microphone gain for optimum performance. The “lock up” sequence normally takes less than 8 seconds, but—rarely—may take as long as a minute if heavy interference is present. SPECIFICATIONS Operating Voltage:3.4 to 4.2 Volts Power Consumption:Approximately 80 mA Battery Life:8-10 hours or more (three Talker units) 14-16 hours with single Talker unit Charging Time:Typically 2-3 hours from “empty” Environmental Performance:Operating -10 to +45 oC Charging 0 to +35 oC Storage -10 to +45 oC Radio Performance:20 meters (66 feet) min in free space Audio Performance: Frequency Bandwidth: 8 kHz (7 kHz for two-way system) Acoustic Gain (relative to speech at 40 inches):16 dB default +/- 25 dB VC range Acoustic…

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TEM Consulting LP 140 River Rd. Georgetown, Tx. 78628 November 2, 2005 Subject: Type Acceptance Application: FCC ID RWT-ER80 To Whom It May Concern: DELEGATION OF AUTHORITY Etymotic Research by its agent TEM Consulting hereby authorizes PCTest Inc. of Columbia, MD to operate on its behalf in the matter of FCC approval for the following: Companion Microphone (FCC ID RWT-ER80) PCTest is authorized to file the necessary forms, exhibits and fees required to facilitate this application. If you have any further questions, please contact me: Stephen Berger 140 River Rd. Georgetown, TX 78628 [email protected] 512-864-3365 140 River Rd. (512) 864-3365 Phone Georgetown, Tx. 78628 (512) 869-8709 FAX www.temconsulting.com [email protected] E-MAIL

1 Etymotic Research, Inc. 61 Martin Lane Elk Grove Village, IL 60007 USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 November 17, 2005 TO WHOM IT MAY CONCERN Etymotic Research request confidentiality for portions of this application. Pursuant to Paragraph §0.475(d) of the Commission's Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, Etymotic Research requests confidentiality for the following products: FCC ID Number Product Title/Model RWT-ER80 Companion Mics System We request that the following information be held confidential: 1) Electrical Schematics & Layout of the Circuitry 2) Bill of Materials 3) Operational Description 4) Block Diagram No other items submitted as part of the equipment authorization filing process are deemed confidential. The above exhibits contain Etymotic Research’s trade secrets and proprietary information that could be of benefit to our competitors regarding the design of our product. This material is not customarily available to the general public and we request that it be withheld from public inspection. If you have any questions, please feel free to contact me at the address shown below. Sincerely,

ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0 ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0 ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0

    
  
       
   

   
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ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0 ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0 ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0 ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0 ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0 ETYMOTIC RESEARCH FCC ID: RWT-ER80 EUT Photographs © 2005 PCTEST Lab. Companion Microphone Model: ER80 NVLAP Lab Code: 100431-0