Listen Technologies LT-82 User's Manual
Contents
1. CAT 5 and coaxial maximum cable length 1 000 ft 305 m e One LT 82 Transmitter or one LA 205 Power Supply can power up to two LA 140 radiators Configurations e LA 140 GY Grey e LA 140 WH White with LA 205 01 North America LA 205 02 Asia UK LA 205 03 Europe Accessories Accessories for the LA 140 can be found on the Stationary IR Accessories page 6 LR 42 44 Infrared Receivers Users will love the comfortable easy to use Listen LR 42 and LR 44 Receivers that feature the ability to receive up to four channels in mono or stereo They use standard AAA alkaline batteries for more than 30 hours of operation or a NiMH rechargeable battery pack that delivers 15 hours of use per charge The unit features auto shut off after 30 minutes of no audio carrier further extending battery life The LR 42 44 boasts high performance audio specs in a small package and is compatible with other manufacturers products The LR 42 44 Highlights Easy to use with outstanding audio performance Users have the option of either the LR 42 stetho receiver or the LR 44 lanyard receiver which is compatible with a variety of earphones Auto shut off extends battery life Outstanding battery life up to 30 hours Uses standard AAA alkaline non proprietary batteries or rechargeable battery pack e LA 350 and LA 351 charging storage platforms make it simple and easy to charge batteries store and distribute units Program2. Mounting Options Power Storage Options Earphones A SAA ens e LA 152 IR Receiver Battery Compartment Non Charging LA 164 LA 204 7 5 VDC Replacement Power Supply for Charging e LA 161 Single Ear Bud LA 326 Universal Rack Mounting Kit Systems gt Tez Saas Sar ick I e LA 205 30 VDC Extension Replacement Power Supply for e LA 164 Earspeaker e LA 337 IR Radiator Floor Stand LA 165 S Headoh e LA 342 Stationary IR Dual Radiator LA 140 LT 82 a sion cup none Mounting Bracket e LA 363 High Capacity AAA Alkaline Batteries 2 e LA 166 Neck Loop e LA 364 NiMH Rechargeable Battery Pack for IR Receivers e LA 170 Behind the Head e LA 320 Configurable Carrying Case Stereo Earphones e LA 350 8 Unit IR Charging Storage Station e LA 351 8 Unit IR Storage Station Stationary IR Systems Listen s Stationary IR Systems meet the needs of the novice to the advanced user offering a range of options for both budget and applications The Basic Stationary IR System is ideal for venues wishing to comply with regulated assistive listening requirements The Performance Stationary IR System is designed for installations that require mounting of the transmitter and the radiator Use the Advanced Installed IR System for frequent applications needing great signal coverage Product Description System Part Number LS 80 LS 81 LS 82 LS 83 LS 84 LS 85 For power cords add the following designators for selected region configuration North America 01 Asia U
3. Don E maist A atapi sound Listen wwWw listentech com Listen Technologies Corporation believes in experiencing every sound whether it s the carefully chosen words of a presiding judge or the subtleties of expression emanating from an orchestra s string section It s all a part of the experience and Listen is dedicated to making sure every individual hears every sound ne is e Listen s line of stationary infrared IR products deliver on this promise by providing a carefully tuned system of products Listen makes the process of specifying ordering installing and using the system simple and straight forward A Listen IR system fills the room with non visible infrared light Each receiver detects the IR light and turns it into sound ensuring every individual can be part of the total experience Because it s light the IR signal never leaves the room and it cannot be received out of the room thereby creating a secure environment with no concern of eavesdropping Imagine going to a theater performance and not being able f to understand all that is being said A Listen system delivers Don t miss a single sound Listen high quality sound to every listener in the theater while ensuring the performance is not recorded outside of the main hall Members of a congregation come to their places of worship looking for words of encouragement and enlightenment A Listen system ensures that each individual can fully enjoy this exp
4. K 02 Europe 03 e To designate white or grey colors for the radiators add designators WH or GY Example System Designator Color Each Stationary IR System delivers Listen s commitment to providing you with a customizable solution that is simple to Listen System L 82 0 1 GY specify install and use You will enjoy outstanding performance with exceptional support from the Listen team Configuration Don t miss a single sound Listen 6
5. are adjusted by the INPUT control and are indicated on the first two VU meters Final transmit level is adjusted with the TRANSMIT LEVEL control The CONTOUR control boosts or cuts audio above 5 kHz The PROCESS indicator is illuminated when the internal audio processor is activated The STEREO indicator is illuminated when the stereo encoder is activated A test tone is available to aid in set up Transmit Section Use the UP and DOWN buttons to select the transmission channel The LCD conveniently shows the selected channel radiation status on or off lock and programming status Monitor Section You can listen to the transmitted audio using the monitor jack and volume control RF Section FF is delivered to the radiators using the two RF OUTPUT BNC connectors If more than one channel is required daisy chain multiple LT 82 units together Power Section Connect the universal power supply included to the unit with the POWER INPUT RJ 45 connector The POWER OUTPUT connectors are used to power up to two LA 140 radiators Audio Output Section The stereo line level phono connectors provide an output consisting of a mix of inputs 1 and 2 Audio Input Section Connect your audio source to inputs 1 and or 2 Input 1 accepts a mono 3 pin XLR or phone connector with balanced selectable mic phantom mic or line level audio Input 2 accepts stereo phono connectors and is unbalanced with selectable input levels of 10 and 10dBu Key Spec
6. ditory description LEE 1 LED Indicators The three colored LEDs provide visual indication of power connectivity and the presence of a signal These LEDs can be deactivated in light sensitive rooms 2 Mounting Hardware and Cable Installation is quick and easy with the included mounting hardware for wall ceiling desk shown mic stand or tripod Listen also includes 25 feet 7 6 m of CAT 5 and coaxial cables including connectors 3 RF Section RF from the LT 82 or another radiator is accepted at the RF INPUT BNC The RF OUTPUT jack feeds RF to additional LA 140 radiator s The delay compensation adjustment ensures that all RF signals are transmitted by the radiator at the same time thereby eliminating receiver drop outs created when signals are out of phase The TERMINATION switch terminates the coaxial cable on the last radiator in the daisy chain 4 Power Section The CAT 5 POWER INPUT connector accepts power from the LT 82 transmitter from an optional LA 205 power supply or from another LA 140 radiator The POWER OUTPUT connector provides power for up to one additional radiator The dip switches are for setting options e Delay compensation adjustments built in 25 feet 7 6 m of CAT 5 and coaxial cable are included with the radiator Key Specifications 10 000 ft 929 m coverage one channel when used with Listen receivers half coverage per radiator with two channels quarter coverage with four channels
7. erience Using IR technology ensures that only those within the sanctuary receive the signal A gt dl f Studies prove that students learn more when they can hear gt well A Listen system delivers the voice of the instructor i directly to their ears Because IR signals are isolated to each E room the same receiver can be used for every classroom with the same settings With a radio RF signal the receiver must be tuned to different channels for each room Fu ef The key witness in a case isa student from Brazil and only speaks Portuguese A Listen system delivers an interpreter s English version of the testimony to each of the jurors Since the IR light will not leave the courtroom the judge is not concerned about the testimony being heard outside of the courtroom The radiator transforms the RF audio signal from the LT 82 transmitters into an IR signal This is essentially a headlight that illuminates the room with non visible IR light The size and shape of the room will determine how many radiators or headlights you ll need to fill the room for adequate signal coverage It s powered by either the LT 82 transmitter or an LA 205 extension replacement power supply Hardware for most types of mounting configurations comes standard with each radiator and the radiator is available in two colors grey or white The IR light from the radiators is detected by the receivers and turned in
8. ers radiator s CAT 5 cable is used for power and coaxial Limited lifetime warranty radiator 3 years and accessories 90 days cable is used for the signal When more than one radiator is needed they can be daisy chained using the same type of cable One LT 82 can power up to two radiators LT 82 Stationary IR Transmitter md 2 3 4 5 6 7 The Listen LT 82 is the heart of the stationary IR listening system It takes the desired audio signal and sends it via coaxial Highlights cable to one or more IR radiator s LA 140 The LT 82 can be Use up to four LT 82 units to create a 1 to 4 operated in mono or stereo on one of four different carriers mono or stereo channel system up to four LT 82 units may be connected to provide up to four The LT 82 will power up to two LA 140 radiators mono or stereo carriers to the radiator s The LT 82 generates e Several audio input configurations to fit most DC power to power up to two LA 140 radiators Two LT 82 units installations can be rack mounted in one rack space using the universal rack e Audio processing can be activated as desired mount kit LA 326 The LT 82 is used for government compliance such as ADA assistive listening language interpretation live theatre houses of worship courtrooms secure rooms and auditory description FEAT UPATE EHAA AiL LAZ IM Tranemmelar AL _5__ 6 Audio Section The input level of inputs 1 and 2
9. ifications e Input voltage 100 240VAC 47 63Hz e System audio performance 63 15KHz frequency response gt 60dB signal to noise ratio SNR and lt 2 total harmonic distortion THD Configurations e LT 82 01 North America e LT 82 02 Asia UK e LT 82 03 Europe Accessories Accessories for the LT 82 can be found on the Stationary IR Accessories page 6 The LA 140 IR radiator emitter packs high infrared power in a small and attractive design in your choice of grey or white colors Designed for easy installation using standard components the LA 140 is powered via CAT 5 cabling while the RF modulated carriers are delivered via standard coaxial LA 140 Stationary IR Radiator Emitter Highlights e Architecturally friendly design with white or grey color options e Simple to install using CAT 5 and coax cables e Mounting hardware included makes every installation simple cable Mounting brackets are included for wall ceiling desk mic Rouble radiator mounting options for twice the power stand and tripod mounting Power can be supplied by the LT 82 transmitter or from a separate power supply LA 205 Built in delay compensation prevents signal cancellation multi path problems and eliminates the piled up cabling that is required with other systems The LA 140 is used for government compliance such as ADA assistive listening language interpretation live theatre houses of worship courtrooms secure rooms and au
10. mable options expand applications and simplify channel selection for users is used for government compliance such as ADA assistive listening language interpretation live theatre houses of worship courtrooms secure rooms and auditory description Key Specifications e 30 15 hours battery life AAA alkaline rechargeable batteries e 63 15kHz frequency response 60dB SNR lt 2 total harmonic distortion THD 1 User Buttons Press the POWER button to turn the unit on or to check battery status after power up The SEL button changes the channel 2 LED Indicators When the SEL is pressed the LED indicators indicate which of the four channels is selected If the POWER is pressed the battery status is indicated 3 Volume Control The user adjusts this to set the volume on the earphones 4 Battery A removable battery compartment houses two AAA alkaline batteries or a sealed NiMH rechargeable battery pack Configurations e LR 42 IR Stethoscope 4 Channel Receiver e LR 44 IR Lanyard 4 Channel Receiver Accessories Accessories for the Listen Receivers can be found on the Stationary IR Accessories page 6 Stationary IR Accessories and Systems Accessories Listen provides a variety of accessories to meet your Stationary IR needs Choose from Connectors Cables Batteries Power Supplies Charging Storage Cases Earphones Mounting Options and Microphones all providing outstanding performance for crisp clear sound
11. to sound Listen offers the LR 42 stethoscope and LR 44 lanyard style receivers The stethoscope is an all in one unit making it easy to keep track of checked out equipment The lanyard receiver accepts any style of 3 5 mm earphone giving users more choices The LT 82 Stationary IR Transmitter accepts audio from an audio mixing console or other sources It then turns this audio signal into an RF signal and delivers it to an LA 140 radiator via coaxial cable The LT 82 also provides DC power for up to two LA 140 radiators via standard CAT 5 cabling For a single channel system mono or stereo use one LT 82 Add more channels e Simple to specify install maintain and use up to 4 total by adding more LT 82 units e Secure the signal will not leave the room Up to four simultaneous mono or stereo channels allows for expanded applications e Uses higher modulation 2 3 to 3 8MHz frequencies thereby decreasing the risk of light interference from fluorescent lights and other sources Installation is simple using CAT 5 cables for power distribution e The radiator mounting hardware is included with each radiator Users will enjoy the simple but refined look and feel of both the stetho and lanyard receivers Advanced battery management ensures long battery life e Uses standard AAA alkaline batteries or an optional rechargeable pack LA 364 Two cables connect the LT 82 Transmitter to the Compatible with other manufactur
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