ClearOne VE402061 Auditory Assistance Tranmsmitter User Manual v excover p65

ClearOne, Inc. Auditory Assistance Tranmsmitter v excover p65

Contents

Full Users Manual

Venture-Express TransmitterUser’s GuideAssistive Listening Systems
Page ii Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760© Copyright 1998 by Gentner Communications Corporation. All rightsreserved. No part of this manual may be reproduced in any form or byany means without written permission from Gentner CommunicationsCorporation. Printed in the United States of America. Original version,1/96. Gentner Communications Corporation reserves specificationprivileges. Information in this manual is subject to change without notice.Venture-Express User’s Guide, September 1998Interference Problems 8Specifications 9Notice 10Warranty 12ContentsCopyright InformationIntroduction 1Features and Controls 1Audio Processing 1Controls 3Setup 3Antenna/Microphone 4Install Batteries 5Select Audio Input 6Operation 6Powering the Venture-Express 6Selecting a Channel 6Setting Memory Channels 6Frequency Chart 7Check the System 8Using the Mix Function 8Low-Battery Indication 8
For Technical Assistance Dial: 800-283-5936 or 801-974-3760Venture-Express User’s Guide Page 1The Venture-Express portable transmitter results from years ofsurveying audiologists, sound contractors, consultants andend users. It is designed to provide every feature andfunction with the highest possible audio/RF performance andreliable operation while remaining affordable and easy to use.The Venture-Express has audio inputs for both microphoneand line (i.e. tape or CD player). The two sources can also bemixed. An audio processor shapes the input audio dynamicsand frequency response to produce a signal with maximumintelligibility and minimal operator adjustment.The RF section is crystal-controlled for stability. Its digitalfrequency-synthesizer circuitry sets the transmitter to 19 ofthe FCC-approved Assistive Listening Band’s channels. Sixmemory channels can recall frequent-use channels.Audio ProcessingTo make transmitted sound intelligible to the hearing impaired,making it louder is not enough. The needs of the hearingimpaired differ greatly from those with normal hearing. Themost common impairments are reduced sensitivity and dynamicIntroductionFeatures andControls
Page 2 Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760range, and loss of high frequencies.The Venture-Express uses a system of program-dependentAGC with a proprietary frequency-shaping system to controldynamics and maximize voice intelligibility. This results in aclear, loud sound, and eliminates the need to constantly raiseand lower receiver volume.Figure 1. Venture-Express front panel
For Technical Assistance Dial: 800-283-5936 or 801-974-3760Venture-Express User’s Guide Page 3ControlsPower: Turns on/off the power to the Venture-ExpresstransmitterChannel Select: Allow the user to scroll up or down throughthe 19 preprogrammed channelsMemory Recall Buttons: May be programmed to any of the19 channels for instant recallDisplay: LCD display shows the channel the Venture-Expressis currently using. If tuned manually, the channel will beprefixed by a C (example: C-07). If tuned using a memorizedchannel, the channel will be prefixed by the memory-buttonnumber (example: 4-07).Input Selector: Allows the user to broadcast the audio inputfrom a microphone, a line source or a mix of bothLine Input Jack: A standard 1/8-inch/3.5mm jack for anoutside audio source (i.e. tape or CD player)Mic Mute Switch: Allows the user to mute the mic audio input,not the auxiliary audio inputMic Input Jack: A mini XLR-type professional connector witha locking action to prevent the mic plug from beingFigure 2. Venture-Express top view
Page 4 Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760Figure 3. Venture-Express back viewaccidentally pulled outBelt Clip: Securely attaches the Venture-Express to the user’sbelt for portable operationBattery Door: Venture-Express uses two AA batteries(alkaline or rechargeable Ni-Cad)Antenna/MicrophoneThe Venture-Express antenna is 2/3 internal to the PTX unit,1/3 in the microphone cord. With this in mind, it isrecommended, although not required, that the microphone beattached before use and that the cord is as fully extended aspossible during use.Setup
For Technical Assistance Dial: 800-283-5936 or 801-974-3760Venture-Express User’s Guide Page 5Also, ensure that you maintain line-of-sight contact with thereceivers, so walls with large amounts of wiring, metal studs orconcrete do not block or reduce the signal.Please Note: Any RF system is susceptible to “dropouts,” wherereduced RF energy caused by reflections and cancellations resultsin a noisy signal. If this happens, try moving the transmitter orreceiver around until the signal clears. Sometimes, even a fewinches can cause a dramatic difference in performance.Install BatteriesThe Venture-Express uses two AA batteries. For best results,we recommend alkaline types with a minimum of 600 mAHrseach of power. To install the batteries, slide the battery doordown and place the two batteries as indicated in the batterycompartment.The Venture-Express can also use the Gentner BC-10Arecharging system and Ni-Cad rechargeable batteries.Caution: Never use standard Alkaline batteries in a recharger.The batteries can explode or leak, severely damaging thetransmitter and charger.
Page 6 Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760Select Audio InputIf a microphone will be used (normal operation), select the MICposition on the input selector. To feed audio from an outsidesource, select the LINE position and insert the audio cable fromthe external source into the line jack.For proper microphone operation, ensure the MUTE switch ispositioned in the MIC on position.Powering the Venture-ExpressPress the POWER button. The LCD display will come on,indicating which of the 19 channels is tuned in.Selecting a ChannelThe transmission channel is selected in two ways: 1) directlyusing the up and down-arrow push-buttons on the front panel;2) using one of the six memory buttons.Setting Memory ChannelsTo set a memory channel, first use the up/down-arrow tuningbuttons to select the desired channel. Next, push and hold thedesired memory button until the display blinks (three seconds).Let off the button and the channel is set.Operation
For Technical Assistance Dial: 800-283-5936 or 801-974-3760Venture-Express User’s Guide Page 7FREQUENCY CHARTFrequency*Frequencies are in MHzChannel *Frequency01 216.02502 216.07503 216.12504 216.17505 216.22506 216.27507 216.32508 216.37509 216.42510 216.52511 216.57512 216.62513 216.67514 216.72515 216.77516 216.82517 216.87518 216.92519 216.975
Page 8 Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760Check the SystemWalk around with the receiver while an audio source is playingand check reception in all parts of the seating area. If there aremore than a few dropouts, change broadcast frequency and tryagain.Using the Mix FunctionTo use the mic and line inputs together, set the input selector inthe MIX position. The relative levels can be controlled byvarying the level into the line input (i.e. adjusting the tape-recorder volume) until the mix of mic and line is satisfactory.Low-Battery IndicationThe Venture-Express operation period is based on the type ofbatteries used. Typical duration is 4–5 hours. When thebatteries are close to depletion, the LCD display will flash“LO.” When the display begins flashing, the Venture-Expresswill continue to operate for about 15 minutes.Interference ProblemsWith any type of RF device, other RF sources can interferewith reception. Interference can take the form of intermittentrising-and-falling audio. To verify on-channel interference,
For Technical Assistance Dial: 800-283-5936 or 801-974-3760Venture-Express User’s Guide Page 9take the receiver to a place where the signal should be stronger.Since the Venture-Express is frequency-agile, you can set it toanother channel and retune the receivers away from theinterference.For multiple Venture-Express's operating in the same location,adjust the channel as far from the other unit(s) as possible.Transmitters should never be set to the same frequency in thesame location.Venture-ExpressDimensions: 4 5/8"H x 3"W x 1 1/8"DWeight: 4 oz. (dry)Mic Inputs: >10kOhms (high impedance, varieswith frequency), -55dB mic inputlevel, mini XLR connectorAux Inputs: >3kOhms (high impedance), -10dBinput level, mini jack connectorAGC Range: 40dBSignal-to-Noise Ratio: 52dBSpecifications
Page 10 Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760Transmission Type: FM modulationMax. Radiated Power: 11,310uV/m at 30 MFrequency Control: Digitally synthesized CrystalcontrolledFrequency Stability: .005%Frequency Selection: 19 channels, 216MHzPower Requirements: 2xAA batteriesCurrent Consumption: Transmitting 150mAStandby 0.5mAThis transmitter is authorized by rule under the Low PowerRadio Service (47 C.F.R. Part 95) and must not cause harmfulinterference to TV reception or United States Navy SPASURinstallations. You do not need an FCC license to operate thistransmitter. This transmitter may only be used to provide:auditory assistance to persons with disabilities, persons whorequire language translation, or persons in educationalsettings; health care services tothe ill; law enforcementtracking services under agreement with a law enforcementagency; or automated maritime telecommunications systemNotice
For Technical Assistance Dial: 800-283-5936 or 801-974-3760Venture-Express User’s Guide Page 11(AMTS) network control communications. Two-way voicecommunications and all other types of uses not mentionedabove are expressly prohibited.This devise may not interfere with TV reception or federalgovernment radar, and must accept any interface received,including interference that may cause undesired operation.The Venture-Express Assistive Listening Transmitter complieswith Part 95 of the FCC rules. Operation is subject to thefollowing two conditions:1) this device may not cause harmful interference;2) this device must accept any interferencereceived, including interference that may causeany undesired operation.This device also complies with the requirements of theDepartment of Communications (DOC of Canada), as specifiedin document RSS-210. The device is permitted only on a no-interference basis, that is, it must cease operation if it is causingharmful interference of services authorized by DOC, as listedin the Canadian Table of Frequency Allocations. Also, theoperator must accept any radio interference received, includingthat which causes undesired operation of the device.
Page 12 Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760Gentner Communications Corporation (Manufacturer) warrantsthat this Assistive Listening System (ALS) product is free ofdefects in both materials and workmanship. Should any part ofthis equipment be defective, Manufacturer agrees, at its option,to:A. Repair or replace any defective ALS product, free ofcharge (except transportation charges), for a period of oneyear from the date of the original purchase, provided theowner returns the equipment to the Manufacturer at theaddress set forth below. No charge will be made for parts orlabor during this period;B. Furnish replacement for any defective ALS product parts inthe equipment for a period of one year from the date oforiginal purchase. Replacement parts shall be furnishedwithout charge, except labor and transportation;C. Repair or replace any defective ALS accessory, free ofcharge (except transportation charges), for a period of 60 daysfrom the date of the original purchase, provided the ownerreturns the equipment to the Manufacturer at the address setforth below. No charge will be made for parts or labor duringthis period.This Warranty excludes assembled products not manufacturedby Manufacturer whether or not they are incorporated in aManufacturer product or sold under a Manufacturer part ormodel number.Warranty
For Technical Assistance Dial: 800-283-5936 or 801-974-3760Venture-Express User’s Guide Page 13THIS WARRANTY IS VOID IF:A. The equipment has been damaged by negligence, accident,act of God or mishandling, or has not been operated inaccordance with the procedures described in the operating andtechnical instructions; or,B. The equipment has been altered or repaired by other thanManufacturer or an authorized service representative ofManufacturer; or,C. Adaptations or accessories other than those manufactured orprovided by Manufacturer have been made or attached to theequipment which, in the determination of Manufacturer, shallhave affected the performance, safety or reliability of theequipment; or,D. The equipment’s original serial number has been modifiedor removed.NO OTHER WARRANTY, EXPRESS OR IMPLIED,INCLUDING WARRANTY OF MERCHANTABILITY ORFITNESS FOR ANY PARTICULAR USE, APPLIES TO THEEQUIPMENT, nor is any person or company authorized toassume any warranty for Manufacturer or any other liability inconnection with the sale of Manufacturer’s products.Manufacturer does not assume any responsibility for1) consequential damages, 2) expenses or loss of revenue orproperty, 3) inconvenience or interruption in operationexperienced by the customer due to a malfunction in thepurchased equipment. No warranty service performed on anyproduct shall extend the applicable warranty period.
Page 14 Venture-Express User’s GuideFor Technical Assistance Dial: 800-283-5936 or 801-974-3760In case of unsatisfactory operation, the purchaser shall promptlynotify Manufacturer at the address set forth below in writing,giving full particulars as to the defects or unsatisfactoryoperation. Upon receipt of such notice, Manufacturer will giveinstructions respecting the shipment of the equipment, or suchother matters as it elects to honor this warranty as aboveprovided. This warranty does not cover damage to theequipment during shipment and Manufacturer assumes noresponsibility for such damage. All shipping costs shall be paidby customer.This warranty extends only to the original purchaser and isnot assignable or transferable.Gentner Communications Corporation1825 Research Way, Salt Lake City, UT, 84119

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