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Listen Technologies Stationary LA-350 User's Manual
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1. stationary IR www listenfech cam Stationary IR System Design Guide and Manual niss a single sound a a ae m m n DearValued Customer Thank you for choosing Listen All of us at Listen are dedicated to provide you with the highest quality products available We take great pride in their outstanding performance because we care that you are completely satisfied That s why we independently certify them to the highest quality standardsand backthem with a limited lifetime guarantee We stand ready to answer any questions you might ha ve during installation or in the operation of our products Should you experience any problems whatsoever with your Listen products we are readyto help you in any way we can with prompt efficient customer care Because at Listen it s all about you And should you have any comments on how we might improve our products or our service we re here to listen Here s how to reach us 1 801 233 8992 1 800 330 0891 North America 1 801 233 8995 Fax support listentech com www listtentech com Thank you and enjoy your listening expenence Best regards Russell Gentnerand the Listen Team In the few instances where repairs were needed 99 of all clients indicated that they were happy with repair tum around times and 85 of the time clients were without their product for less than 10 days Overall client satisfaction of working with Listen wasrated
2. LA 115 RG 58 BNC to 58 50 Ohm Coaxial Cable BNC Coupler RG 58 Connector Preassembled specify length LA 393 LA 71 LA 72 RJ 45 CAT 5 45 2 en 45 to 45 5 Coupler Preassembled specify length Notes 44 Notes 45 Notes 46 Li len Stationary IR www istentech com LA 140 IR Radiator iss a single sound 1 INFRARED TECHNOLOGY LA 140 User s Manual Table of Contents Specifications Quick Reference Page Setup Instructions LED Indications Mounting Your Radiator Accessories for LA 140 LA 140 Package Contents e A 140 Stationary IR Radiator e R Radiator Quick Reference C ard e 25 feet RG 58 Coaxial Cable e 25 feet CAT 5 Power Cable IR Radiator Mounting Hardware e Universal Bracket e Tilt Arm A ilt Arm B e ilt Bolt Corner Mount Bracket e Wall Box Plate Wall Box Plate Mounting Screws Hollow Wall Anchors with Screws e Mounting Hardware Screws e Universal Stand Nut 10 Corner Mount Bracket Mounting Hardware Screws Coaxial RG 58 25 feet CAT 5 25 feet Tilt Bolt A 140 G Y grey e LA 140 WH white Tilt Arm A Tilt Arm B Universal Stand Nut Hollow Wall Anc n Listen Config urations Wall Box Plate en Screws Wall Box Plate Universal Bracket LA 140 Specifications Architectural Specification The radiator emitter shall have a sin
3. Stationary IR Radiator EE M Radiators LA 140 GY LL E Dual Radiator Mounting Bracket IR Radiator Floor Stand Radiator Mounting Options LA 342 LA 337 Bem LL IR System Power Supply Radiator Power Supplies PowerCord Jusa UK ro Required LA 205 01 LA 205 02 LA 205 03 Rem LLL PartNumber LA 391 Cable tf CM 2 COM 24 Cables O 5 0 00024 Cables length in feet Cables Cable 2 Cable10 o CR COM Note Each radiator includes 25 feet 7 6 meters of RG 58 coaxial RF cable and CAT 5 power supply cable Rechargeable Battery Pack Alkaline Batteries Replacement Eartips 20 Stetho LR 42 LA 364 LA 363 LA 151 Receiver Quantity Recharge Stereo Description Lanyard able Battery Alkaline Ear Speaker neat Behind the Single Ear Ear Receiver Batteries Headphones Bud Buds Lanyard Pack phones Receiver Part Number 18 44 LA 364 LA 164 1 165 LA 170 LA 166 LA 161 EUN NIS 8 Unit Charging Storage Station 8 Unit Storage Station E CO Charging Storage Stations Part Number LA 350 01 1 350 02 O TA Receivers ADA Compliance Signage Kit US Only Other Accessories Part Number LA 304 Bem 27 Y 5 G Li len Stationary IR www istentech com LT 82 Stationary IR Transmitter
4. 1 Using the functionality chart on a previous page note that this isthe Stereo On Off Function Press the Select Button five times until the unit displays 2 3 1 n Press the Power Button to reset the unit The unit will lash the four LED s three times and then shut down It will be necessary to manually turn the unit back on after a reset Programming Examples Example 5 I want to tighten the squelch setting to setting 10 O E Enter Program Mode When program mode is entered the first function is active and the LED s will show 1 2 3 Using the functionality chart a previous page note that this isthe Stereo On Off Function Press the Select button three times so the LED s show 2 3 1 Note that this is the Squelch Adjustment Function Pressthe Power button to enterthe Squelch Adjustment Sub Mode Upon entry to the Squelch Adjustment Sub Mode the LED s will show which squelch setting is currently selected if the unit is at default settings the unit will display representing a squelch setting five 2 3 4 Pressthe Select button to scroll through the 16 squelc h settings until the unit displa ys E 2 3 1 Pressthe Power button to sa ve this setting retum to regular program mode Exit Program Mode 109 Programmable Features Detailed Desc nptions Stereo Mode Default is OFF Stereo Mode Function This function must be set to match the type of sig
5. 71 Accessones for LA 140 Accessories LA 205 LA 342 IR Extended Power Supply IR Dual Radiator Mounting Bracket T s powers two LA 140 radiators for mounting two radiators LA 70 Note You will only need the LA 205 if you vertically or horizontally CAT5 Cable are using more than two LA 140 includes RG 58 coaxial cable and CAT5 cable to specify length radiators per LT 82 transmitter or if you interconnect the two radiators wish to remote powerthe radiators B gr LA 112 LA 115 LA 127 RG 58 50 Ohm Coaxial Cable RG 58 BNC to RG 58 BNC Connector specify length BNC Coupler LA 391 LA 71 Am RG 58 50 Ohm CoaxialCable 45 5 Connector preassembled specify length Pkg of 10 RJ 45 to RJ 45 CAT 5 Coupler LA 393 45 CAT 5 preassembled specify length 78 Notes 79 A NN FF ee Notes 80 www stentech com Stationary IR L LR 42 Stethoscope 4 Channel IR Receiver LR 44 Lanyard 4 Channel IR Receiver iss a single sound INFRARED TECHNOLOGY LR 42 44 User s Manual Table of Contents LR 42 LR 44 4 C hannel IR Receivers Specifications 87 LR 42 Quick Reference Page 99 LR 44 Quick Reference Page 90 Setup Instructions 91 Operating Instructions 95 Locking Instructions 101 Programming Instructions 102 Programming Examples 107 Programmable Features Detailed Descriptions 110 Battery Charging Information 11 Acce
6. Angle Angle Length of cable RG 58 Length of cable CAT 5 LA 205 Power 11 LA 205 Power out Power in Powe Length of cable CAT 5 v Power in Q Power in 5 o a pela 2 ht ht peig peig Angle Angle Length of cable RG 58 Length of cable CAT 5 LA 205 Power p LA 205 Pow optional Power out Power in Powe Length of cable CAT 5 Power B Power in Height Height e e ang Length of cable ang RG 58 Length of cable CAT 5 LA 205 Power LA 205 Power out Power in Powe Power in Power in Length of cable CAT 5 Length of cable pelay Angle Angle System Layout Worksheet F1 out Power in Power out Power in 5 out 2 9 55 o 2 o Power in 9 Br Hone 95 O 10 bd b 5 Xo 2 m Height Angle p Power Power out Power in 5 out 2 9 ES EE 2 a Power in 2 5 ES 28 5 5 2 Angle p rd 271 r out Power in Power out 0 5 8 3 out 9 5 55 EE 2 a P
7. a Pull CAT 5 and Coaxial cables through if necessary Pull CAT 5 and Coaxial cables through hole in Wall Box Plate Determine correct angle Determine correct angle setting to use forthe radiator using the design guide see page 13 of design guide Attach Radiator to Wall Box Plate Attach Radiator to Wall Box Plate using Tilt Arm A and Tilt Arm Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm and verify that the comectangle is selected before fully tightening Tilt Bolt Attach Safety Mounting Cable The radiatorhasa safety cable attached to the top of the swing arm This cable must be attached to a secure base to prevent the radiatorfrom falling in the event of a mounting hardware component failing Possible injury to personsand damage to the radiatoris prevented by securely attaching this cable to a base attach to a secure base Connect CAT 5 Coaxial cables Connect CAT 5 and Coaxial cablesto appropriate locations on radiator 60 LA 140 Mounting your Radiator Hollow Wall Mountin A hollow wall installation is not as preferable asa wall box installation but can be done without problems The hollow wall installation still requires the Wall Box Plate to be used Wall Box Plate 2 NT Tilt Bolt Pieces Used e Wall Box Plate Hollow Wall Mounting Screws e Tilt Arm A Hollow Wall Anchors with Screws e Tilt A
8. LA 140 Mounting your Radiator Determine correct angle setting Determine correct angle setting to use forthe radiator using the design guide see page 13 of design guide Attach Radiator to Desk Mic Stand Attach Radiator to Desk Mic Stand using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Am B and verify that the corectangle is selected before fully tightening Tilt Bolt Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cablesto appropriate locationson radiator 74 A LA 140 Mounting your Radiator Tripod Stand Mountin Radiatoris mounted on a tripod stand If Listen part number LA 337 is used the radiatorcan be mounted up to nine feet high L Tilt Bolt Universal Stand Nut Pieces Used e Universal Stand Nut e Universal Bracket e Tilt Arm A e Tilt Arm e Tilt Bolt e Mounting Hardware Screws Universal Bracket gm Installation Steps Tilt Arm A Tilt Mounting Hardware Screws E Attach Universal Bracket to tripod stand Attach Universal Bracket to LA 337 tripod stand using equipment included in LA 337 1 Tnpod Attach Tilt Arm Attach Tilt Arm A to Universal Bracket using included mounting hardware screws 75 LA 140 Mounting your Radiator Attach Tilt Arm Attach Tilt Arm to Swing Arm
9. My radiator is not radiating a signal If there is no audio at the transmitter for 30 minutes the radiator s will stop radiating to conserve the life of the radiator diodes When the audio retums the radiators will retum to normal operation There is not sufficient range in my system It may be necessary to add additional radiators to increase the coverage area Keep in mind that one channel on one radiator will coverup to 10 000 ft 929 m and that this is cut in half for every additional channel used There is interference in my transmission In a multi channel system make sure that the transmitters are on different channels Also windows and sunlight can cause interference and noise on the receiver The audio drops out in areas I don t believe it should Audio drop outs can occur for several reasons including the following The system was set up by trial and emor With degradation of the IR diodes the system now hasdropouts due to this reduction in IR output power from the radiator Make sure to alwaysdesign the system using the footprint specifications found in the design guide Also in a multi radiator application the delay switch settings may be incorrect The radiators could be out of phase and therefore canceling each other out Make sure to set up the delay compensation switch correctly referto page 16 for further information The audio sounds distorted in my receivers The receiver may be approaching the edge of the c
10. iss a single sound INFRARED TECHNOLOGY LT 82 Users Manual Table of Contents Specifications 29 Block Diagram 36 Quick Reference Page 37 Setup Openating Instructions 38 Accessones for LT 82 43 LT 82 Package Contents e 1 82 IR Transmitter e LA 205 Power Supply e LA 89 IR Interconnection Cable e IR System Design Guide and User s Manual LT 82 Quick Reference Card Listen Configurations LT 82 01 North America e LT 82 02 UK LT 82 03 Euro LT 82 Specifications Architectural Specification The Stationary IR Transmitter shall be capable of broadcasting on four mono or stereo carriers 2 3 2 8 3 3 and 3 8 MHz Channel selection shall be capable of being locked Multiple transmitters shall be capable of being daisy chained togetherto transmit up to four channels simulta neously The transmitter shall have a timerthat shuts off the camers after 30 minutes when no audio 15 present at the transmitter The transmitter shall have a SNR of 60 db or better The device shall have an audio frequency response of 63 Hzto 15 kHz It shall have two mixing audio inputs one balanced XLR phone input and one unbalanced RCA input The device shall have the following audio controls input level transmit level contour level and stereo on off control The device shall have an audio processorthat is capable of automatic gain control and limiting The transmitter shall provide powerforup to two radiators ove
11. A Yes In Auto Seek Mode the receiver will automatically find an active channel If the unit squelches orthe select button is pressed the unit will automatically search foran active channel Referto page 102 for more information about Auto Seek Mode O How do check the battery level on my receivers A When the unit is on pressthe power button momentanly The LEDs will display the battery status for three seconds 4 LEDs 75 100 etc See page 99 for more information O How do adjust the squelch setting on my receiver A See page 106 for detailed instructions on adjusting the squelch setting SSS How can ifthe receiver has been fully charged when using the LA 350 A The green LED to the side of charging pocket will illuminate O Can rechargeable batteries in the alkaline battery compartment No You must purchase a Listen LA 364 battery pack if you want to use a charging case My rechargeable batteries don t last very long Why A If your batteries have been through many charging cyclesthey may need to be replaced Compliance Warranty and Contact Information Compliance Information The following compliance information applies to the LT 82 LA 140 G Y LA 140 WH LR 42 LR 44 and LA 350 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause ha rmful interference and 2 this device must accept any interference receiv
12. AN Be sure to plug into LT 82 before connecting to power outlet radiator poweron CAT 5 cable TX powercable 39 LT 82 Setup and Operating Instructions Select Operating Channel 7 44 Select the operating channel Select the operating channel 1 4 For single channel systems any channel can be used In multi channel systems each transmitter must be on a different channel oNITOR p zl Down Button IL INPUT 2 1 TEST TONE Channel select buttons powsR CHANNE Up Button 7 1 RF Off Channel Setting Information This channel does not have a camer present however allows passthrough from RF input to RF output This allowsa channel to be disabled in a daisy chain but allowsthe system to still operate asthe RF signal from the transmitter s before it will still passthrough Note that the power RJ 45 with CAT 5 connectors will passthrough in all conditions unit off channel orchannels 1 4 RF Off Channel Setting yel After channels have been selected the transmitter s can be locked After channels have been selected the transmitter s can be locked on that channel by pressing and holding the Channel Select Up button forthree seconds When locked a padlock icon will be displayed on the LCD see below Icon ind icates channel is locked 40 A LT 82 Setup and Operating Instructions 8 Connect Audio Inputs The LT 82 has two
13. to the radiator We have provided the room layout worksheet for you to do this towards the back of this design guide See example below Room Layout Worksheet TIEREN 120 fT 14 Designing System 5 9 Complete the system layout worksheet Complete the system layout worksheet forPowerand RF cable lengths delay compensation required number of power supplies and height and angle of radiators Referto the system layout worksheet example below ee re jy 15 Designing System 5 9 8 Cross out the LT 82 transmitters Cross out the LT 82 tra nsmitters not required in your system Determine how many radiators will be used Determine how many radiators will be used on each radiator daisy chain by reviewing the room layout work sheet Cross out the unused radiators the system layout worksheet Ed Write in the coaxial RF cable lengths for each radiator Write the coaxial RF cable lengthsforeach radiator used in the spaces provided Review your room layout worksh
14. 2 Tip 3 Ring Y l Sleeve on Phono Phono CO Phono ono Un INPUT 2 OUTPUT Mono Stereo Mono Stereo 36 AA LT 82 Quick Reference Input Level Indicators Shows Input 1 and Input 2 levels Input 1 and 2 n a a lO Input levels o e Input 1 and Listen INPUT Input 2 here za 0 e INPUT LEVEL TEST POWER Test Tone Activates a tone to aid system setup RF Input OUTPUT Input additional RF signal here for multi channel systems OUTPUT RF Outputs Output RF signal to radiator s and oradditional LT 82 Power Input Connect power supply here included MONITOR PROCESS STEREO TRANSMIT LEVEL CONTOUR CD l e Transmit Level Indicator Shows mixed audio level qp Process LED Indicates audio processing mode is active i Stereo LED Indicates stereo mode is active LCD Display See LCD Display quick reference LT 82 IR Transmitter Monitor Jack Plug in a headset to monitor audio 4 CHANNEL SELECT cCnannel Select Up and Down Use to select channel Buttons also used for programming functions contour Equalization adjustment boosts or cuts high frequencies Transmit Level Adjusts mixed audio levels AUDIO Input 1 Balanced input for connection of a line level or microphone accepts eithera XLR phono plug OUTPUT INEUTZ R de as PWR
15. 4 8 out of 5 Please continue with your excellent attitude toward customer satisfaction You guys are great never had such good service from any company Keep up the good work You stand behind your product wonderfully Assistive Listening Language Interpretation Soundfield Tour Group Conferencing Stationary Infrared Table of Contents 5 9 Design Guide Infrared Technology Overview System Overview Designing a System Design Tools LT 82 Stationary IR Transmitter Specifications 39 Block Diagram 36 Quick Reference Page 37 Setup Openating Instructions 38 Accessones for LT 82 43 LA 140 IR Radiator Specifications Quick Reference Page Setup Instructions LED Indications Mounting your Radiator Accessories for LA 140 LR 42 LR 44 4 C hannel IR Receivers Specifications 87 LR 42 Quick Reference Page 99 LR 44 Quick Reference Page 90 Setup Instructions 91 Operating Instructions 95 Locking Instructions 101 Programming Instructions 102 Programming Examples 107 Programmable Features Detailed Descriptions 110 Battery Charging Information 111 Accessories for LR 42 LR 44 115 LA 350 LA 351 8 Unit IR Receiver Storage Charging Cases LA 350 Specifications and Features LA 351 Specifications and Feature LA 350 Charging Requirements Instructions Cord Tidy Rack Supplementary Information Troubleshooting 157 Frequently Asked Questions 139
16. Audio Output Power 20 mW maximum at 32 ohms ontrols Channel Lock Auto Seek Channel Lock Out Squelch Indicators Channel Selection Red LED illuminates on the current channel selection Battery Type Two 2 AAA alkaline batteries or battery pack Battery Life 30 hours alkaline 15 hours NiMH rechargeable pack LA 364 Battery Charging Fully Automatic with NiMH battery pack and LA 350 charger Dimensions x W x D 1 8 x 4 0 x 75 in 46x102x19 mm Stethoscope Arm length 8 in 203 mm Physical Unit Weight without batteries 1 75 oz 49 9 Unit Weight with batteries 2 55 oz 74 g Shipping Weight 8 00 oz 227 grams Temperature Operation 10 C 14 F to 40 104 F Environmental Temperature Storage 20 C 4 F to 50 122 F Specifications are subject to change without notification LR 44 Lanyard Receiver Specifications Architectural Specification The Lanyard IR Receiver shall be capable of receiving on four camers 2 3 2 8 3 3 3 8 MHz and the channel shall be displayed on one of four front panel LEDs The receiver will accept mono or stereo earphones with a 3 5 mm connector The receiver shall be capable of being locked ona channel The receiver shall be capable of receiving a stereo signal on each of the four camers The receiver shall have a SNR of 60 db orgreaterand have built in squelch control The device shall have an audio frequency response of 63 Hz to 15 kHz and shall have
17. Program Mode El Make sure that the unit is off not just in LED sleep mode Press and hold the Power and Select buttons for three seconds When program mode is entered four LEDs will fash once indicating successful entry into program mode Immediately after the LEDs flash the channel one LED will come on This represents the first of the programmable features the Stereo On Off function While in Program Mode The Channels 1 2and 3 LED indicators are used to displa y which programmable feature 5 currently selected The Channel 4 LED indicatorshows whetherthe Stereo On Off and Auto Seek features are enabled ordisabled If the Channel 4 LED ison these features are enabled Press Select button to advance to the next program mode feature Press the Power button fo n mn UN Enable or disable the Stereo On Off and Auto Seek Features or Enter the program sub mode required to adjust the Channel Lock Out and Squelc h features LR 42 44 Programming Instructions Program Mode Functionality Diagram Use thischartto help with navigating through and adjusting the features within the program mode Navigating within the Program Mode Programmable Receiver LED Display Shows Feature Pressing the Pressing the Power Button Select Button Toggles Stereo On Off LED 4 Stereo On Off Advancesto Feature 2 illuminated indicates stereo is ON default off E Enters Channel Lock
18. RF signal to another radiator Termination Switch Set LED Indicator Shutoff Switch SW1 If desired the three LED indicators on the front of the radiatorcan be disabled using this switch Set this switch to the position towards the left side of the rear of the radiator to disable the LED indicators To enable the LED indicators set this switch to the position towards the right side of the rearof the radiator LED Indicator Shutoff Switch SW1 56 ee LA 140 Setup and Operating Instructions 8 Set Compatibility Switch 5 2 If using a Listen 11 82 Transmitter with the Listen LA 140 Radiator lea ve this switch in the OFF position IF you are using the Listen LA 140 Radiator with another manufacturer s transmitter modulator set this switch to the ON position IMPORTANT Ensure this switch is in the OFF position whenever using the radiator with the Listen LF 82 Transmitter Compatibility with Other Manufacturer s Switch SW2 9 Front LED Indicators There are three LEDs located on the bottom center of the front of the radiator These LEDs are very useful for detemining the current status of the radiator See below for possible LED combinations and how to interpret what the combinations mean ATTENTION The LEDs can be disabled using switch 1 located on the rear of the radiator If you believe there is power to the radiator but there are LED indications on the front of the radiator sw
19. Support 800 330 0891 801 233 8992 www listentech com B Place LA 364 battery pack in receiver Place LA 364 battery pack in receiver The unit will now recognize the rechargeable batteries and charge them correctly when unit is placed in a charging case LA 350 C 0682 Model 4 Channel IR Receiver FCC This device complies with Part 15 of the FCC Rules 5 complies with Canadian ICES 003 This devic IC This Class A digital ap Listen Support 800 330 0891 801 233 8992 www listentech com 92 LR 42 44 Setup Instuctions Connect Earphone or Headset LR 44 model only An earphone or headset will connect to the jack on the bottom of the unit Either mono or stereo connectors be used with Listen receivers Make sure to push the connector all the way into the jack 4 Turn Unit On Tum the unit on by pressing either button on the front of the unit ATIENTION 1 The LR 44 model must have a headset connected to the unit to tum on and remain on for longerthan ten seconds ATTENTION 2 If using a new LA 364 NiMH battery pack the batteries may need to be put through one charge cycle before they will tum the unit on 93 LR 42 44 Setup Instuctions Select a Channel and or Program Channel Selection Method The Select button is used to change the channel Pressthe button once to change the channel The unit will either seek or sc roll through the channels depending upon wh
20. anyone other than a factory authorized service technician Warranty does not cover normal wear and tearon the product orany other physical damage unlessthe damage wasthe result of a manufacturing defect Listen is not lia ble for consequential damages due to any failure of equipment to perform asintended Listen shall bearno responsibility or obligation with respect to the manner of use of any equipment sold by it Listen specifically disclaims and negates any warranty of merchantability or fitness of use of such equipment including without limitation any warranty that the use of such equipment for any pe with applicable laws and regulations The terms of the warranty govemed by the laws of the state of Utah In the first ninety days after purchase any defective product will be replaced with a new unit After 90 days Listen will at its own discretion either repairorreplace transmitters and receivers with a new unit ora unit of similartype and condition Product that is not covered under warranty shall be repaired orreplaced with a unit of similartype and condition based on a flat fee Contact Listen for details This limited warranty prices and the specifications of products are subject to change without notice Contacting Listen If technical service is needed please contact Listen Pre authorization is required before retuming Listen products If products were damaged in shipment please contact the camer then contact Listen for repl
21. audio input options Input 1 and Input 2 Input 1 is a balanced connection using either an XLR or 1 4 phono connector Input 2 hastwo unbalanced mixing phono connectors Use Input 1 if you are using a microphone orif you have a balanced connection such as from a professional audio mixer you can also use Input 1 for unbalanced connections Use Input 2 to connectto an unbalanced audio source If using Input 1 onnect the audio source s to one or both audio input connections Input 1 offersa choice of balanced XLR or 1 4 phono connector Plug your microphone into Input Land move the input select switch to Mic fordynamic microphones or Mic PH Power for condenser microphones Plug your balanced or unbalanced audio source into Input 1 Use the following diagram 1 4 Phone Wiring Balanced Unbalanced ee Balanced Unbalanced Audio Audio Balanced Unbalanced Source Source Audio Audio Source Source Top Ring Top Ring Sleeve Audio from 2754 If using Input 2 Plug your unbalanced audio source into Input 2 and select the audio level switch for 10dBu or 10dBu to match the audio level coming from yourequipment ATIENTION When using Input 1 and Input 2 simultaneously the audio signals will mix together Input 1 will mix with both left and right signals of Input 2 Test Tone if necessary To broadcast a test tone pressthe test tone button This helpsto test receivers when no au
22. box using included Mounting Hardware Screws 1B If attaching directly to a hollow ceiling attach Wall Box Plate securely to ceiling using included Hollow Wall Anchors with Screws The Wall Box Plate must be used in this installation to provide a secure base for the radiator to be mounted on 68 LA 140 Mounting your Radiator Attach Tilt Arm A Attach Tilt Arm A to Wall Box Plate Attach Tilt Arm A in such a manner that it 545 across Wall Box Plate using Mounting Hardware Screws not up and down on plate Attach Tilt Arm Attach Tilt Arm to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws It is recomended that the top hole of the radiator swing arm be used using included mounting hardware screws in this install Pull CAT 5 and Coaxial cables through if necessary Pull CAT 5 and Coaxial cables through hole in Wall Box Plate E Determine correct angle Determine correct angle setting to use forthe radiator using the design guide see page 13 of design guide 69 LA 140 Mounting your Radiator Attach Radiator to Wall Box Plate using Tilt Arm A and Arm Attach Radiator to Wall Box Plate using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Am and verify that the comecta
23. cover this area m oum am nm um A Designing a System To double the radiator power it is possible to vertically or horizontally mount two radiatorstogether using the LA 342 Dual Radiator Mounting Bracket sold separately This is highly recommended in larger rooms Height of Radiators It is critical to mount the radiators at the proper height If the radiator is mounted too low the coverage pattern will be too small to provide sufficient long throw coverage If the radiator is mounted too high the required angle of the radiator will cause the radiation pattem to be compromised The best height of the radiatorisabout 16 ft 5 m from the floor Radiator Mounting Angle The mounting system for Listen LA 140 radiators allow you to mount the radiator in 15 degree increments The best angle dependson the shape of the room and the orientation of the radiatorto the seats within the room In general mounting anglesof 15 and 30 degrees provide the best coverage 5 9 Designing System S 5 8 Determine the number of radiators required Determine the number of radiators required based on the size and shape of the room Based on step two it is recommended that you draw the room out indicating the location of each radiator in the room and cable runs from the transmitters and power supplies if any
24. is present on that channel it will seek fora channel with signal present If none is found it will continue seeking until it finds a signal Note that if the unit has been locked on its channel this lock will override Auto Seek To tum the unit off press and hold the PWR button for 1 5 seconds 97 98 LR 42 44 Operating Instuctions 4 LED Sleep Mode The receiver will shut off the channel indicator LEDs after a period of 10 seconds passes without any buttons being pressed The receiver will still produce audio and the volume can still be adjusted only the LEDs shut down It wil be necessary to wake up the receiverby tapping eitherthe PWR or Select button before doing many of the operating tasks described in the next sections Select Listening Channel Selecting Channel with Auto Seek Disabled Default OFF Pressthe Select button to scroll through the four channels If the channel indicator LED flashes four times when Select 5 pressed and the unit does not change channels it is locked on the current channel See page 101 for channel lock information Also if the unit skips overthe desired channel it is because that channel has been locked out See page 102 for more information about the programmable features Auto Seek Enabled The unit will continuously seek fora signal until one isfound and then it will stay on that channel the signal isnot detected fora short time period orthe user press
25. matter RF being output from the RF Radiator with another manufacturer s in multiple radiator systemsthis Output connection this switch transmitter modulator it is necessary ne be set propeny must be in the ON position to put this switch in the ON position IMPORTANT Always ensure SW2 is in the OFF position when using a Listen LT 82 Transmitter 54 A LA 140 Setup and Operating Instructions EN Unpack the Product Remove outer packaging and plastic cover Verify all components are present and that no physical damage has occurred to the product B Mount Radiator Determining Location Generally a higher location with a clear line of sight to the area the receivers will be used in is recommended Referto the design guide for detailed instructions about determining the location to mount the radiators Mounting Desired Location See Mounting your Radiator section on page 58 fordetailed instructions on mounting your radiator 3 Connect RF Signal Each radiator must be supplied an RF signal on RG 58 coaxial cable The RF cable can originate either from an LT 82 Transmitter or from a different radiator Connect the RF signal to the radiator See design guide for more information on supplying RF signal to the radiators dier 4 Connect Power RF Signal on coaxial cable Each radiator must be supplied DC power via CAT 5 cable One 11 82 Transmitter can power up to two r
26. minimize the impact on the rest of the LEDs Worse case 12 diodes out of 84 stop working O If want to mount two radiators side by side can do thisand what part to need to order A Yes this is possible and often times it is recommended You will need to order Listen part number LA 342 See page 77 for more information about the dual mounting bracket am using Non Listen receivers with Listen 11 82 Tra nsmitters how do know which channel to use A Please see the LT 82 specifications page to determine the operating frequencies on page 35 O am using a non Listen transmitter with a Listen LA 140 radiator what do need to know It isimporta nt that SW2 the rearofthe radiatorisswitched to compatibility mode This will a llo w the radiatorto work with other manufacturers transmitters See page 57 for more information 2 3 0 2 2 Q Q Q Frequently Asked Questions Frequently Asked Questions want to occasionally turn off one or more channels in a multi channel system but don t want to have to rewire the system every time do this Is this possible A Yes The transmitter should be placed on channel This doesnot add a channel to the system in your daisy chain however allows other channels to passthrough See page 40 formore information make my receiver change channels automatically flentera room with a signal present on a different channel
27. of radiator swing arm comes attached to rear of radiator using included mounting hardware screws The bottom hole in Swing Arm must be used for this install Determine correct angle Determine correct angle setting to use forthe radiator using the design guide see page 13 of design guide Attach Radiator to Desk Mic Stand Attach Radiator to Desk Mic Stand using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the arms together ATTENTION Note the angle measurements on Tilt Arm and verify that the comectangle is selected before fully tightening Tilt Bolt a 2 6 Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cablesto appropriate locations on radiator 76 LA 140 Mounting your Radiator Dual Radiator Mounting It is possible to mount two Listen LA 140 Radiators either side by side oron top of each other using the LA 342 Dual Radiator Mounting Bracket sold separately The mounting strategy is very similar to all of the previous scenerios except you will be working with two radiators connected together The instruc tions for connecting two radiatorstogether with the LA 342 bracket are included with the bracket Af terthe two radiators are connected togetherall of the above instructions are the same except when the above instructions say to attach tilt arm B to the radiator you will instead attach tilt arm B to the dual mounting bracket Vertical Horizontal
28. pressing the channel select buttons Pressthe channel select Up button to toggle between Process On and Off Pressthe channel select Down button to toggle between Stereo On and Off If the green LED is displayed on the front panel that feature isenabled Once you have enabled ordisabled the featuresasdesired let the transmitter exit the program mode by waiting five seconds 10 Set Auto Timeout Feature 10 30 minutes passes without audio to transmitter the unit will stop sending signal to the radiators When the icon is illuminated on the LCD and a period of 30 minutes passes without audio being input to the transmitter the unit will stop sending a signal to the radiators Thisis done to help conserve LED life on the radiators e disable or enable Auto Timeout Feature 2 Your transmitter is shipped to you with the Auto Timeout Feature enabled Yourtransmitter is shipped to you with the Auto Timeout Feature enabled To disable the Auto Timeout Feature To disable the Auto Timeout Feature pressand hold the down button while tuming the unit on BE To enable the Auto Timeout Feature To enable the Auto Timeout Feature pressand hold the up button while tuming the unit on 42 Accessones for LT 82 Accessories LA 326 Universal Rack Mounting Kit Will mount up to two LT 82 units LA 112 58 50 Ohm Coaxial Cable LA 70 Specify length CAT5 Cable Specify length D
29. the quantity of each part number required for your system Use the Room and System Layout Worksheets to fill in this form found in the last section of this guide Transmitters Fill in the number of transmitters required Each transmitter includesa short piece 15 inches of RG 58 coaxial RF cable for multiple channel installation interconnections You do not need to orderthis cable Transmitter Rack Mounting Fill in the number of rack mounting kits required One rack mount kit can mount two 1 82 transmitters Ed Radiators Fill in the numberofeach type of radiator required Each radiatorcomes with mounting bracketsfor most types of installation In addition the radiator comes with 25 ft 7 6 of coaxial CAT 5 power cables 17 Designing System 5 9 8 6D Radiator Mounting Options Since the radiatorcomes with most radiator mounting options there are only two additional choices Dual radiator mounting The LA 342 dual radiator mounting bracket allows you to mount two radiators together vertically or horizontally This includes short lengths of coaxial RF and CAT 5 powercables 2 Floor stand The LA 337 is a floor stand for portable applications Li Radiator Power Supplies Fill in the numberand type of LA 205 power supplies required if any Li Cables From the System La yout Worksheet insert the cable lengthsforthe preassembled coaxial RF cables LA 391 and CA
30. the unit seeks for channel four is stops on channel three you would use the Channel Lock Out Mode to eliminate the problem Auto Seek Default is Off Auto Seek function Upon power up with the Auto Seek feature enabled the unit will search fora channel with a signal present If signal is found the unit will stop and stay on that channel If the unit does not find a signal it will continue to seek until one isfound If the unit ison a channel with a signal it will remain on that channel until the signal is not detected fora short time at which point it will automatically seek for another channel with signal If the Select button is pressed when the unit ison a channel it wil seek forthe next channel with a signal When to Enable Auto Seek It is recommended to enable the Auto Seek feature in applications where a user will be moving from one area to anotherand doesnot want to have to manually change the channel on the receiver in each new area Also if it is desired that the Select button act asa seek button instead of a manual scroll to the next channel button Auto Seek should be enabled Priority If the receiverhasbeen locked ona channel the lock will take priority over Auto Seek Squelch Setting Default is 3 Squelch Setting The purpose of squelch isto mute the audio output of the receiver when the signal from the radiators is tumed off oristoo weakto be received Without squelch you would hearradio noise in your earphone T
31. 351 Package Contents e LA 351 Storage Station e Cord Tidy Rack a Listen Configurations LA 350 01 North America e LA 350 02 LA 350 03 Euro 119 120 121 124 LA 350 Specifications e Can charge or store up to eight LR 42 and or LR 44 receivers at one time e Easy to identify charging Green LED fully charged units Red LED charging in progress e Pockets grab and hold receivers so they will not fall out Charging Storage Station can be mounted on a flat surface or wall e Can charge battery packs while they are attached to the receiver or while they are separate from the receiver by use of included conversion tra y e Lanyard cordsare stored without tangling with use of Cord Rack Specifications Compliance RF Safety Compliance FCC Industry Canada CE RoHS Bicolor LED Red when charging Green when charging is complete In line switching mode power supply Listen part number LA 204 Power Supply Dimensions H xW xD 1 50x 13 60 x 5 40 in 38 x 345 x 137 mm Temperature Storage 20 C 4 F to 50 122 F Environmental Temperature Operation 10 C 14 F to 40 104 Specifications are subject to change without notification LA 351 Specifications Can store up to eight LR 42 and or LR 44 receivers at one time e Pockets grab and hold receivers so they will not fall out e Storage Station can be mounted on a flat surface or on a wall e Lanyard cordsare stor
32. 82 Model 4 Channel IR Receive eiver FCC This device complies with Part 15 of the FCC Rules IC This Class A digital apparatus complies with Canadian ICES 003 Listen Support 800 330 0891 801 233 8992 www listentech com E Open battery compartment Open by pulling into two pieces using the gripson the top of the compartment Install batteries Insert two AAA alkaline batteries in compartment noting polarity n Close battery compartment Snap the two compartment piecesback together Return battery compartment to rear of receiver Place battery compartment on rearof receiver 91 LR 42 44 Setup Instuctions Rechargeable NiMH batteries To use rechargable NiMH batteries in the receiver you will need to purchase an NiMH rechargeable battery pack Listen part number LA 364 IMPORTANT Do not install AAA NiMH batteries in included alkaline battery pack because the batteries will not charge in this pack only use a Listen provided sealed battery pack LA 364 for battery charging Install LA 364 battery pack using the following process Remove alkaline battery compartment Remove alkaline battery compartment by pressing down on compartment and pushing towardsthe bottom of unit Store alkaline battery pack for later use if desired T1710 Model 4 Channel IR Receive This er FCC This device complies with Part 15 of the FCC Rules Adigi 5 complies with Canadian ICES 003 Listen
33. Attach Safety Mounting Cable The radiatorhasa safety cable attached to the top of the swing arm This cable must be attached to a secure base to prevent the radiator from falling in the event of a mounting hardware component failing Possible injury to persons and damage to the radiator is prevented by securely attaching this cable to a base attach to a secure base Connect 5 Coaxial cables Connect 5 and Coaxial cablesto appropriate locations on radiator LA 140 Mounting your Radiator Corner Mountin The radiatoris mounted in the comerofa room with or without a wall box available for this use A wall box must be at least four inches from the comer if using for this install Pieces Used e Wall Box Plate e Mounting Hardware Screws if attaching to wall box Hollow Wall Anchors with Screws if attaching to hollow wall e Corner Mount Bracket e Mounting Hardware Screws Tilt Arm A P Wall Box Plate e Tilt Arm B Tilt Bolt e Tilt Bolt Tilt Arm A Tilt Arm B Mounting Hardware Screws Wall Box Plate Mounting Screws Hollow Wall Anchors with Screws Corner Mount Bracket Installation Steps E Fasten Wall Box Plate to wall Attach Wall Box Plate securely to wall IMPORTANT Wall Box Plate must be at least four inches from corner to ensure corner bracket will fit in corner using a wall box wall box must be fourinches from comen attach Wall Box Plate
34. Instructions e Place LA 364 battery packs in converted charging slots Place LA 364 battery packs in converted charging slots 4 Verify batteries are charging Verify batteries are charging When units begin to charge a red LED will on nearthe charging slot This LED will sta y lit until the receivers are fully charged Verify full charge Verify full charge When the units are fully charged a green LED will come on near the charging slot 22 2 Red LED Charging in Process Green LED C ha rging Complete LA 350 351 Cord Rack The Cord Tidy Rack The Cord Tidy Rackcan be used if desired to help with organizing the lanyard cordsofthe LR 44 receiver during charging or storage Insert the tidy rack into the holes on top of the station to use Cord Rack 4 Notes LA 350 351 129 Notes TSE 0 1 130 Li len Stationary IR www istentech com SUPPLEMENTARY INFORMATION iss a single sound E un INFRARED TECHNOLOGY Supplementary Information Table of Contents Troubleshooting Frequently Asked Questions Compliance Information Warranty Contacting Listen 133 135 137 137 137 4 9 2 3 0 3 lt Troubleshooting Troubleshooting believe my radiator has power but none of the LEDs on the front are on SW1 has been turned OFF Turn this switch to the ON position for verification of power and carrier
35. LINE MIC Minput 1 Level Switch Set switch for line or mic level Phantom power available in Mic PH Power position Input 2 Level Switch Set switch to match the level of your Input 2 source Input 2 Audio inputs stereo ormono i Audio Outputs Input 1 and Input 2 mixed audio outputs Power Outputs Can be used to powerup to two radiators Channel Display Displays what channel the LT 82 is currently on RF output indicator Indicates tra nsmitter is outp utting RF Program Mode Indicates the unit Lock Icon Indicates the unit is locked on current channel 37 LT 82 Setup and Operating Instructions ES Unpack the Product Remove outer packaging and plastic cover Verify all components are present and no physical damage hasoccurred to the product 2 Mount LT 82 s in Rack if desired If rack mounting the tra nsmitter s install the optional rack mount kit part LA 326 according to the instructions included with the kit 3 Interconnect Multiple LT 82s if necessary If insta lling more than one transmitter for multi channel applications it will be necessary to daisy chain the transmitters Connect output on first transmitter to RF input on second transmitter Continue daisy c ha ining up to four transmitters four channels 3 4 Connect LT 82 RF Signal to Radiator s Connect RF output on transmitterto RF input on radiator In multi channel systems connectthe last trans
36. Out Channel Lock Out Advancesto Feature 3 Sub Mode See next page for instructions TogglesAuto Seek On Off LED 4 Auto Seek Advancesto Feature 4 illuminated indicates Auto Seek is ON default off Enters Squelch Adjustment Advancesto Feature 5 Sub Mode See page 105 Advancesto Feature 6 No Function Unit flashes all LED s 3 times Reset to Defaults Advancesto Feature 7 indicating reset and then the unit shuts off Exits Program Mode and retumsto Retumsto Feature 1 standard operating mode LR 42 44 Programming Instructions Channel Lock Out Sub Mode Instructions While in Channel Lock Out Sub Mode The channelsthat would be available are represented by the corresponding channel indicator LED being on and the channelsthat would be locked out are represented by the channel indicator LED being off 2 Pressthe Select button to advance to the next channel s active combination Pressthe Power button to save the selected channel s active combination and retum to regular mode the Auto Seek function willbe the selected feature Channel Lock Out Sub Mode Functionality Diagram Use this chart to help with navigating through and adjusting the channels active within the Channel Lock Out Sub Mode Channels Navigating within the Channel Lock Out Sub Mode Receiver LED Display Shows Active Pressing the Select Button Pressing the Power Button Advancesto the next Savesth
37. Referto page 102 for more information about channel programming The batteries are not charging in my receivers Make sure that you have an LA 364 NiMH battery pack installed on the receiverand that the chargeris plugged in Frequently Asked Questions Frequently Asked Questions How many radiatorscan 1 82 power A Up to two radiatorscan be powered using an LT 82 You must use an extemal power supply LA 205 for more radiators O How many radiatorscan an LA 205 power A Up to two radiatorscan be powered using an LA 205 extemal power supply O What do the LEDs on the front of my radiator tell me A Referto page 57 for detailed information about the LED indicators the front of the LA 140 Radiator Can Itum off the LEDs on the front of my radiator and stil have it function normally A Yes you can disable the LED indicators if you desire to do so SW1 on the rear of the radiator to the OFF position See page 56 for more information O What isthe life span of the Listen LA 140 Radiator A The radiators will be degraded to 50 efficiency at approximately 10 000 operating hours The footprint specification provided by Listen has accounted for 40 of this degradation which occurs at approximately 8 000 hours This is equivalent to three years of operating at eight hours per day If one of the LEDs on radiator fails how many LEDs will stop working If a diode goes out the radiatorhasbeen designed to
38. T 5 powercables LA 393 Li Receivers There are two types of receiversto choose from You may wantto choose a combination of both typesof receivers The stetho type receiver makes it simple to dispense the units and prevents cord tangling However the stetho style for some guests is uncomfortable especially for prolonged time periods The advantage of the lanyard receiveristhat you can use many types of different earphones Howeverthis can make it more complicated for distributing and the cords can become tangled Each receiver comes with an alkaline battery compartment no batteries You will need to decide whetherto use alkaline AAA batteries LA 363 ora rechargeable battery pack LA 364 Alkaline batteries will la st about 30 hours while the rechargeable batteries will last about 15 hours If you orderthe rechargeable battery packs you will need to orderthe 8 Unit Charging Storage Station LA 350 au Stetho Receiver Fill in the number of LR 42 Stetho receivers required and the appropriate battery options You can also order extra replacement tips LA 151 qty 20 2 Lanyard Receiver Fill in the number of LR 44 lanyard receivers required and the appropriate battery options You ll also need to choose the quantity and type of earphones Listen highly recommends the Ear Speaker LA 164 Stereo Headphones LA 165 and the Behind the Head Headphones LA 170 Also itisa good idea to ordera quantity of Neck Loops LA 166 for customers with T
39. acement or repair requirements payable by the camer Listen s corporate headquarters are located in Bluffdale Utah U S A and are open Monday through Friday 8am to 5pm Mountain Time 14912 Heritagecrest way Bluffdale Utah 84065 4818 1 801 233 8992 1 800 330 0891 North America 1 801 233 8995 Fax support listentech com www listentech com Meyuauajddns i ten www listentech com Listen Technologies Corporation 14912 Heritagecrest Wa y Bluffdale Utah 84065 4818 U S A 1 801 233 8992 1 800 330 0891 North America 1 801 233 8995 fax www listtentech com Printed the United States of Amenca 2008 Listen Technologies Corporation All Rights Reserved 2008115
40. adiators also up to two radiators can be powered using an IR Extended Power Supply Listen part number LA 205 Connect DC powerto the radiator See design guide for more information on supplying DC powerto the radiator s i radiator poweron CAT 5 cable RF Signal coaxial cable D We s OF 55 LA 140 Setup and Operating Instuctions 5 Set Delay Compensation Switch Single Radiator Systems The position of the delay compensation switch does not matter in single radiator systems Multiple Radiator Systems Itis necessary to select the correct dela y compensation switch setting foreach radiatorto ensure that each radiator tra nsmits the same signal at exactly the same time in an overlapping multiple radiator system Not setting the delay compensation switch correctly will result in reduced coverage area forthe system See design guide page 16 fordetermining the correct delay compensation switch setting foreach radiatorin a multiple radiator system Delay Compensation Switch 6 Set Termination Switch Single Radiator Systems Always set the termination switch to the ON position in single radiator systems Multiple Radiator Systems Set the termination switch to the OFF position on radiators that are outputting an RF signal to another radiator Set the termination switch to the ON position on the radiators that are not outputting an
41. coil equipped hearing aids Ed Charging Storage Options you chose rechargeable battery packs for receivers you need to orderthe appropriate quantity and type of 8 Unit Charging Storage Stations LA 350 If not it s a good idea to order the 8 Unit Storage Station LA 351 This simplifies the dispensing and storage of receivers Both the LA 350 and LA 351 can be permanently mounted on a table oron a wall vertically or horizontally 6H Other Accessories For US customers Listen offers the ADA Compliance Signage Kit LA 304 This aids in complying with US ADA regulations 18 A Design Guide Notes 19 1399usHoM One Channel mittel y RIZ RF out 2 Two Channel out 2 Three Channel y IR station RF out 2 Four Channel RF out 2 LjPower out 1 Power out 2 LjPower out 1 LiPower out 2 LiPower out 1 L Power out 2 LiPower out 1 Power out 2 Length of cable CAT 5 Length of cable RG 58 Length of cable CAT 5 Length of cable RG 58 Length of cable CAT 5 Length of cable RG 58 Length of cable CAT 5 Length of cable RG 58 LA 205 Power TY LA 205 Power out Power in Powe adit Length of cable CAT 5 Power in Power D a pel x 5 t 5 t peig peig
42. d to keep the receiver on the charging station The charging station provides a maintanence charge that will keep the battery level at 100 If the receiver is not kept on the charger it can lose 20 of its charge per month Accessones for LR 42 44 Accessories LA 152 LA 364 LA 150 IR Alkaline battery compartment NIMH Rechargeable Battery Pack Replacement Lanyard for LR 44 included with receiver requires LA 350 Charging Station 11 Seod LA 350 LA 351 LA 161 LA 151 8 Unit IR Receiver 8 0 IR Receiver Storage Station Single Ear Bud Replacement Ear Tips Charging Storage Station Pkg of 20 LA 364 required LA 162 LA 164 LA 165 LA 166 Stereo Ear Bud Farspeaker Stereo Headphones Neck Loop LA 170 Behind the Head Headphones 115 Notes 116 listen stationary IR www listentech com LA 350 8 Unit IR Receiver Charging Storage Station LA 351 8 Unit IR Receiver Storage Station iss a single sound INFRAF ri rz 5 xa XR n e IF R m kar id f P ea wt prs k LA 350 351 User s Manual Table of Contents LA 350 Specifications and Features LA 351 Specifications and Features LA 350 Charging Require mentg Instructions Cord Tidy Rack LA 350 Package Contents e LA 350 Charm ing Storage Station e LA 204 Power Supply e Battery Pack Conversion Trays 8 e Cord Tidy Rack LA 350 Quick Reference Card gt Battery Pack Conversion Trays LA
43. diators The diagram below shows such a system with one radiator The radiatoris powered from the powersupply atthe transmitter This power supply can supply enough powerforthe LT 82 and up to two LA 140 radiators If you need more than two radiators you will need more power supplies This is discussed later in this document Power is supplied from standard CAT 5 cable while RF from the transmitter is delivered using 50 ohm RG 58 coaxial cable The radiator is supplied with 25 feet 7 6 meters of 5 and RG 58 coaxial cable LT 82 Stationary IR Transmitter LA 140 IR Radiator LR 42 IR Stetho Receiver 3 IR Power CAT 5 Cable RG 58 50 ohm Cable Mounting hardware for radiator included with radiator LR 44 IR Lanyard Receiver System Overview 5 9 Multiple Channel System A multiple channel system consists of two to four LT 82 transmitters and one or more radiators The diagram below shows such a system with two radiators The radiators are powered from the power supply from the first transmitter This power supply can supply enough powerforthe LT 82 and two LA 140 radiators If you need more than two radiators you can use the powerfrom the othertransmitters In this example the four transmitter power supplies can supply enough powerforup to eight LA 140 radiators This is discussed later in this document Power issupplied from standard CAT 5 cable while RF from
44. dio source is available 41 LT 82 Setup and Operating Instructions 9 Set Stereo and Process Features Stereo Process Mode Descriptions a Stereo Mode A stereo signal can be transmitted to the receivers Input 2 must be used if a stereo signal is desired and the stereo mode must be enabled on the transmitter ATTENTION If the transmitter is in stereo mode the receivers will need to be put into stereo mode Referto page 102 for more information Bl Process Mode Processmode isused forAudio Gain Control AGC With the processmode enabled the LT 82 will automatically adjust for inconsistent signal input levels by raising orlowering the signallevelaccordingly to provide a consistent sound output level This feature should be used in applications where a consistent sound level isimportant and the input levels va ry substantially Typically you would not want to engage the Process Mode when a speaker s emphasis is critical to the message they are conveying To Disable or Enable Stereo and Process Features a Transmitter is shipped to you with Stereo and Process disabled Yourtransmitter is shipped to you with Stereo and Process disabled B With the unit on press and hold the channel select Down button With the unit on pressand hold the channel select Down button for eight seconds The program PGM icon will appearon the LCD Once in the program mode the Stereo and Processfeatures can be tumed on and off by
45. distortion of lessthan 2 The device shall operate for 30 hours with two AAA alkaline batteries and 15 hours with two AAA NiMH rechargeable batteries The receiver shall be covered by a limited litetime warranty The LR 44 is specified Specifications LR 44 All system specifications are wireless end to end weighted ontrols Indicators Channel Selection Red LED illuminates on the current channel selection Battery Type Two 2 AAA alkaline batteries or NIMH battery pack Battery Life 30 hours alkaline 15 hours NiMH rechargeable pack LA 364 Battery Charging Fully Automatic with NiMH battery pack and LA 350 charger Dimensions H xW x D 1 80 x 4 00 x 0 75 in 46 x 102 x 19 mm Physical Temperature Operation 10 C 14 F to 40 104 F Environmental Temperature Storage 20 C 4 F to 450 122 F 0 to 9596 relative humidity non condensing Specifications are subject to change without notification 88 A LR 42 Quick Reference Stetho Arms LR 42 model only Speakers located in ends of stetho arms place in earsto listen to audio Channel Indicator LEDs Displa ys which channel the unit is currently tuned to Also can display battery level etc IR Receiver Lens Lens covers the IR receiving components ensure entire lens is visible during use Volume Control Dial Use to adjust volume levelin speaker s Power Button Pressto tum unit on press amp B Select But
46. e selected channel s active channel s active combination and retumsto regular combination program mode OIR v vl 1 2 4 3 4 NES MESZ MES S 1 3 4 104 LR 42 44 Programming Instructions Squelch Adjustment Sub Mode Instructions While in Squelch Adjustment Sub Mode There are 16 available squelch settings The 16 settings are represented by binary code refer to the chart below E Pressthe Select button to advance to the next possible squelch setting 3 Press the Power button to save the selected squelch setting and retum to regular program mode Squelch Adjustment Sub Mode Functionality Diagram Use this chart to help with navigating through and adjusting the channels active within the Squelch Adjustment Sub Mode Squelch Navigating within the Squelch Adjustment Sub Mode Receiver LED Display Shows setting 24 Pressing the Select Button Pressing the Power Button Ydjanbs default Bon u enbs 35007 Savesthe selected squel ch setting and retumsto regularprogram mode Advancesto the next squelch setting Y 4 352 y n bs E MES gt 105 LR 42 44 Programming Instructions Resetting to Defaults It is possible to reset the unit to factory default settings and the unit must be in the program mode to be res
47. ed including interference that may cause undesired operation This Class digital apparatus complies with Canadian ES 003 These devicesare RoHScompliant Listen Technologies Corporation Listen warrants its transmitters and receivers LT 82 LT 700 LT 800 LR 100 LR 42 LR 44 LR 300 LR 400 LR 500 LR 600 to be free from defects in workmanship and material under normal use and conditions for the useful lifetime of the product from date of purchase Listen warrants its Stationary IR Radiators LA 140 to be free from defects in workmanship and material under normal use and conditionsforthree yearsfrom the date of purchase Listen warrants its Noise Canceling Microphone LA 270 to be free from defects in workmanship and material under nomal use and conditionsforone yearfrom date of purchase Listen warrants its Charging Carmying Cases LA 306 LA 311 LA 313 LA 317 LA 318 LA 319 LA 320 LA 321 LA 322 LA 323 LA 324 LA 325 to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase All other products and accessories are warranted for 90 da ys from date of purchase This warranty is only available to the original end purchaser of the product and cannot be transfered Warranty is only valid if warranty card hasbeen retumed within 90 da ys of purchase This warranty is void if damage occurred because of misuse or if the product has been repaired or modified by
48. ed the receiver will have very poor range 95 LR 42 44 Operating Instuctions Eu Position the receiver so the stethoscope arm tips rest in the earholding the unit below the chin of the user ES e Position the lanyard around the neck holding the unit below the chin of the user If desired pull on the lanyard adjustment ball to decrease the size of the lanyard loop bringing the unit closer to the user s chin To increase the size of the lanyard loop pull on the lanyard cord above the point it passesthrough the receiver 96 ZZ 3 c i X CQ X NYI Gai G X LR 42 44 Operating Instuctions 3 Turn the Unit On on the unit by pressing either button on the front of the receiver ATTENTION 1 The LR 44 model must have a headset connected to the unit to tum on and remain on for longerthan ten seconds ATTENTION 2 If using a new LA 364 NiMH battery pack the batteries may need to be putthrough one charge cycle before they will tum the unit on EY Auto Seek Disabled Default OFF The unit will powerup to the same channel that it was on when it was last tumed off Auto Seek Enabled The unit will power up to the same channel that it was on when it was las tumed off If no signal
49. ed without tangling with use of Cord Rack Specifications LA 351 Safety Compliance FCC Industry Canada CE RoHS Temperature Storage 20 C 4 F to 50 122 F Environmental 95 relative humidity non condensing Specifications are subject to change without notification LA 350 Charging Requirements Instructions Requirements to Charge Receivers Requirements to Charge Receivers To charge Listen LA 42 or LR 44 IR Receiver batteries you must have an LA 364 Rechargeable Battery Pack for each receiver The LA 350 will not charge AAA NiMH batteries placed inside the alkaline battery pack that comes with the receiver The LA 364 battery packscan be charged while attached to the receiverorthey can be charged separate from the receiver Charging Instructions Plug power supply into power source 7 Plug power supply into power source E Plug power into charging storage station Plug powerinto charging storage station 125 LA 350 Charging Requirements Instructions 3 Charging Scheme EY To Charge Batteries while in Receivers s Place receivers in charging slots Place receivers charging slots It may be necessary to press down on the units to ensure that they are touching the charging contacts To Charge Batteries separate from Receivers E Install conversion tray Install conversion tray in 5015 LA 350 Charging Requirements
50. eet forthis information EJ Draw a connecting line from the power supply output Draw a connecting line from the power supply output of the LT 82 tra nsmitter s and the LA 205 power supplies to each of the radiators Keep in mind that each transmitter and power supply can power up to two LA 140 radiators Cross out the unused power supplies Cross out the unused power supplies Write the 5 power supply cable lengths Write in the CAT 5 power supply cable lengths for each radiator used in the spaces provided Review your room la yout worksheet forthis information EJ Determine the delay compensation for each radiator Now determine the delay compensation for each radiator using the Delay Compensation Calculator located in the back of this design guide The correct setting of the delay compensation is necessary only in systems where there isoverlap in coverage between two or more radiators Write the delay setting on the System Layout Worksheet The delay setting for each radiator is determined using the calculator and as follows 1 Distance of Furthest Radiator DFR Determine which radiator is the furthest from the transmitter on one of the two daisy chains Calculate the distance from the furthest radiatorto the transmitter and record it in the first column of the delay compensation calculator See example below B Radiator Distance from Transmitter RDT Foreach radiator determine the overall distance from the transmitter
51. es the SEL but ton the unit will seek for another signal and will keep seeking until a signal is detected If however the unit is locked on the current channel this lock will override Auto Seek and the unit will not change channels when the signal is lost Also if there are channelsthat have been locked out in the Channel Lock Out mode the Auto Seek will not stop on these channels See page 102 for more information LR 42 44 Operating Instuctions 6 Adjust Volume Level Use the control dial on the top of the unit to adjust the volume to a comfortable level Checking Battery Level and Current Channel 7 Checking Battery Level Tapping the power button will display the battery level on the channel indicator LEDs When a battery check is initiated all four LEDs will tum on Then the LEDs will ra mp down to the current battery level If all four LEDs tum on and remain on the batteries are full H The battery level will then display on the channel indicator LEDs fortwo seconds unlessbattery level is less than about 576 in which first LED will flash for five seconds Each lit channel indicator represents approximately 2576 of the battery s capacity see chart below Do 76 1007 E E LED off 2 51 75 2 26 50 4 g _ A NA 99 100 LR 42 44 Operating Instuctions 1 3 Checking Current Channel The channel the unit is currently on is represented by the co
52. et e While in program mode select the Reset to Defaults function and pressthe power button E The unit will lash the channel indicator LED s three times and then shut down when reset Exiting Program Mode There are two ways to exit the program mode a Wait 10 seconds without pressing a button any changes made are saved Use the Select button to scroll through the program mode functions until the Exit Program Mode function is selected and then pressthe Powerbutton Programming Examples Example 1 I want to turn on off the Stereo Mode function and then exit program mode EN Enter Program Mode see page 102 B When program mode is entered the first function is active and the LED s will show 2 3 1 Using the functionality chart on a previous page note that this isthe Stereo On Off Function E Note thatthe channel 4 LED indicates whether or not this function is on off n Press the power button to tum Stereo Mode on off E Exit Program Mode Example 2 I want to turn on off the Stereo Mode function and the Auto Seek Function and then exit program mode 1 Enter Program Mode B When program mode is entered the first function is active and the LED s will show 2 3 Using the functionality chart a previous page note that this isthe Stereo On Off Function 5 E Note that the channel 4 LED indicator represents whether or not this function is on off R n Press power button to tum Stereo Mode on of
53. ey LO WHO Unit Weight 2 1 lbs 95 kg Unit Weight with Wall Ceiling 2 35 16 1 05 kg Mounting hardware Shipping Weight 4 0 Ibs 1 8 kg Temperature Operation 10 14 F to 40 104 F Environmental Temperature Storage 20 C 4 F to 50 122 F Humidity 0 to 95 relative humidity non condensing Output Physical Specifications are subject to change without notification LA 140 Quick Reference No Connection Yellow This yellow LED is lit when the radiator isnot connected toa transmitter or radiator Carrier Present Green This green LED is lit when there 5 signal present to the radiator During nomal operation the red and green LEDs will be continuously lit Power Red This red LED is lit when there ispowerto the radiator RF Input Input RF signal from a transmitter or radiator here RF Output Output RF signal to an additional radiatorhere amp Power Output Output power here Power Input Connect power here LED Indicator Shutoff Switch SW1 Controls LED indicators on front of radiator If switch is set to the OFF position LEDs will not light up on front of radiator Delay Compensation Switch Adjust the amount of signal delay Y from the radiator here In single radiatorsystemsthe position Compatibility with Other Manufacturer s Switch SW2 If using a Listen LA 140 Termination Switch If there is no ofthis switch does not
54. f Press the Select button two times until the LED s show 2 3 1 Using the chart on a previous page note that this isthe Auto Seek Function HB Again note that the channel 4 LED indicates whetherthis function is on off Press the power button to tum Auto Seek on off Exit Program Mode 107 Programming Examples Example 3 I want to lock out channels 2 and 3 using the Channel Lock Out Function E Enter Program Mode When program mode is entered the first function is active and the LED s will show 2 3 1 Using the functionality chart on a previous page note that this isthe Stereo On Off Function Press the Select button once so the LED s show 2 1 Note that this isthe Channel Loc k O ut function 4 Pressthe Power button to enterthe Channel Lock Out Sub Mode Upon entry to the Channel Lock Out Sub Mode the LED s will show which channels are currently active if the unit is at default settings all four LED s will be on indicating that all channels are active Pressthe Select button to scroll through the 15 possible combinations of active locked out channels until the unit displa ys 8 4 1 2 3 Press the Power button to sa ve this setting and retum to regular program mode Exit Program Mode Example 4 want to reset the unit to factory defaults ja Enter Program Mode When program mode is entered the first function is active and the LED s will show
55. g station IMPORTANT When not using your LR 42 LR 44 Receiver it is recommended to keep the receiver on the charging station The charging station provides a maintenance charge that will keep the battery level at 100 If the receiver is not kept on the charger it can lose 20 of its charge per month LR 42 44 Battery Charging Information 2a Charging LA 364 Battery Pack Separate from the Receiver E Install Battery Pack Conversion Plates to charging tray Install Battery Pack Conversion Plate to charging tray of LA 350 conversion plates included with LA 350 Place LA 364 battery pack into converted tray Place LA 364 battery pack converted tra y of LA 350 Ensure that the LA 350 charging station has power to it E When the battery pack is seated correctly a red LED will light When the battery pack is seated correctly red LED will light up on the LA 350 charging station adjacentto the charging slot indicating charging hasbegun EA A Red LED Charging in Process Green LED Charging Complete 113 LR 42 44 Battery Charging Information n When the battery pack is fully charged the red LED will turn off When the battery pack is fully charged the red LED will tum off and a green LED will light up to indicate battery pack is fully charged The green LED will sta y lit until the battery pack is removed from the charging station IMPORTANT When not using your LR 42 LR 44 Receiver it is recommende
56. gle camer transmitting area of no lessthan 10 000 ft 929 m or greater for each radiator specified when used with specified receiver The radiator shall be powered CAT 5 cabling and the RF from the transmitter shall be camed by 50 ohm coaxial cable The radiator shall have three indicating LEDs for power no carrier present and carrier present The radiator LEDs shall be deactivated after 30 minutes if there is no audio signal present from the transmitter The radiator shall come in a white or grey colorand shall include all of the mounting hardware capable of mounting the radiator on a wall on a ceiling in a comer on a desk on a mic stand oron a tripod The Listen LA 140 is specified Specifications LA 140 10 000 ft 929 m when used with Listen Receivers Termination Switch Delay Compensation Switch Indicator LEDs on off Controls User Controls MARE compatibility switch Yellow LED Indicates no connection to transmitter or radiator Red LED Indicates power is present Indicators Green LED Indicates carrier and power are present and radiator is emitting IR signal RJ 45 connector 30VDC powered from transmitter via CAT 5 cable or op Input tional LA 205 power supply RJ 45 connector 30VDC powers up to one additional radiator Maximum two 2 radiators powered from each LT 82 transmitter or LA 205 power sup ply Emitter Power 3 Watts Dimensions H xW x D 5 50 x 8 00 x 2 60 in 140 x 203 x 66 mm LAO GY Gr
57. gle setting to use forthe radiator using the design guide see page 13 of design guide 4 Attach Radiator to Desk Mic Stand Attach Radiator to Desk Mic Stand using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm and verify that the comectangle is selected before fully tightening Tilt Bolt JA Connect CAT 5 and Coaxial cables Connect CAT 5 and Coaxial cablesto appropriate locationson radiator 72 A LA 140 Mounting your Radiator Microphone Stand Mounting Radiatoris mounted on a standard microphone stand Pieces Used e Universal Bracket e Universal Stand Nut e Tilt Am A e Tilt Arm B e Tilt Bolt Installation Steps Fr Universal Bracket Tilt Bolt Universal Stand Nut gm Tilt Arm A Tilt Arm B Mounting Hardware Screws E Attach Universal Bracket to Mic Stand Attach Universal Bracket to Mic Stand using Universal Stand Nut 8 Microphone stand Attach Tilt Arm Attach Tilt Arm A to Universal Bracket using included Mounting Hardware Screws Tilt Arm can be attached to either side of the Universal Barcket or Attach Tilt Arm Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws The bottom hole in Swing Arm must be used forthis install 73
58. hargeable NiMH Battery Packs within the receiver and separate from the receiver Within the receiveristhe easiest method however charging the battery packs while they are separate from the receiverallowsforthe receiverto be used continuously while another set of batteries are being charged for it 2a Charging Batteries within the Receiver Install LA 364 rechargeable NiMH Battery Pack Install LA 364 rechargeable NiMH Battery Pack to rear of receiver CE 0682 Model 4 Channel IR Receiver FCC This device complies with Part 15 of the FCC Rules IC This Class A digital apparatus complies with Canadian ICES 003 Listen Support 800 330 0891 801 233 8992 www listentech com 111 112 LR 42 44 Battery Charging Information Place LR 42 LR 44 Receiver into slot Place LR 42 LR 44 Receiver into a slot on the LA 350 case Ensure that the LA 350 charging station haspowerto it When the unit is seated correctly red LED will light When the unit is seated correctly a red LED will light up on the LA 350 charging station adjacent to the charging sot indicating charging hasbegun 22 A Red LED Charging in Process Green LED Charging Complete El When the receiver is fully charged the green LED will light When the receiveris fully charged the red LED will tum off and a green LED will light up to indicate unit 5 fully charged The green LED will sta y lit until unit isremoved from the chargin
59. he squelch on yourreceivercan be adjusted so that it will mute at varying levels of signal strength There are 16 settingsthat the squelch setting can be set to The lowest squelch setting no squelch is 0 and the tightest squelch setting is 15 The default setting is 3 When to Adjust Squelch Setting For maximum range the squelch setting should be set to a low level 0 1 or 2 However when setting the squelch level low the reliability of the squelch setting is compromised and will lead to radio noise being heard in the earphone when signal strength is low If no radio noise is desired to be heard the squelch setting should be setto a tighter position However when setting the squelch level high the receiver will have reduced range due to the audio being cut off when signal islow See Programming Unit section for instructions on how to adjust squelch setting LR 42 44 Battery Charging Information EN Requirements EY NiMH Battery Pack LA 364 It is not possible to charge battenes in the alkaline battery pack that comes with the unit The LA 364 rechargeable battery pack must be used IR 8 Unit Charging Storage Station The only way to charge the LA 364 battery packs is by inserting them into the LA 350 Charging Station The battery packscan be charged while installed on the receiver orthey can be charged while separate from the receiver EI How to Charge Batteries There are two ways to charge the LA 364 Rec
60. ich channel selection method you have enabled See below for description of possible channel selection methods EY Upon Power up When set to factory defaults the unit will tum on to the last channel is was tuned to upon power up However the unit can be programmed to continuously seek fora channel with signal upon powerup until one isfound Auto Seek See page 102 for more programming information Single Channel Systems you know what channel the unit will be used on and you know that there isonly one channel that the unit will need to be used on you can lock it onto that channel now See page 101 for channel lock information Multiple Channel Systems In systems that require the receiversto be able to access more than one channel you must decide which type of channel selection method you want enabled The default setting isthat each time you press the Select button the unit will scroll to the next channel you want the receiverto automatically begin seeking for another channel when the signal islost such as walking from room to room in a museum the Auto Seek function must be enabled See page 102 for more information Select Stereo Mono Mode If the receiver will be receiving a mono signal stereo mode isnot enabled on LT 82 no action is required as Mono Mode isthe default setting However if the receiver will be receiving a stereo signal the receiver must be set to Stereo Mode to function properly Setup Additional Pr
61. interconnected to create up to a four channel system Up to four LT 82 tra nsmitters can be interconnected to create up to a four channel system Forthe system there are two RF outputs provided for connection to the radiators Each of these two outputs is referred to as the Radiator Daisy Chain RG 58 coaxial cable is used to interconnect the RF in the radiator daisy chain You can connect asmany radiators in the daisy chain as you need NOTE Adding additional transmitters will decrease radiator coverage Each radiator requires one RF RG 58 coax connection and one power CAT 5 connection Each radiator requires one RF RG 58 coax connection and one power CAT 5 connection The connection can come from a transmitter or from another radiator The powerconnection can come from either a transmitter a radiator or from a power supply as long as you don t exceed the capacity Listen has provided mounting hardware for most LA 140 mounting situations To make it easy for you to design specify and install a system Listen has provided mounting hardware for most mounting situations including wall ceiling comer desk tripod and mic stands To double the radiation power you can vertically or horizontally mount two radiators together using the LA 342 dual radiator mounting brackets This includes coaxial RF and CAT 5 power cables It is possible that the RF signal arrives to different radiators at different times Due to the higher modula
62. itch 1 has likely been setto the position Make sure switch 1 is in the position before attempting to check the status of the radiator rearen The red LED isthe PowerOn LED If the Red LED is lit the radiator has power E3 Yellow LED The yellow LED isthe no connection LED If lit the radiatoris not connected to a transmitter oranother radiator When properly connected the yellow LED will be extinguished Green LED The green LED isthe Signal Present LED If the green LED islit the radiatorisoutputting an IR signal into the room During normal operation the red and green LEDs will be on simultaneously unless defeated by SWI Red LED Yellow LED Green LED LA 140 Mounting your Radiator Overview There are several different configurations that the radiator can be mounted in All of them except for the Dual Radiator Mounting Configurations can be accomplished using the mounting hardware included with the LA 140 IR Radiator Kit the LA 342 Dual Mounting Bracket is not included with the kit but is required for mounting two radiators side by side Read through the following mounting strategies to determine which works best for your application and then follow the instructions for mounting NOTE The parts in this section are not shown to scale Mounting Hardware Pieces Wall Box Plate Universal Bracket Tilt Arm A Tilt Arm B Tilt Bolt Corner Mount Bracket Universa
63. l Line Mic Mic Phantom Power Input 2 Level 10 10 dBu Internal Adjustments Compression ratio for audio processor Stereo on off Processing on off Indicated by a green LED when on front panel Indicators Red LED illuminates when test tone enabled front panel Dimensions x Wx D Physical Rack Mo ntin One rack space height 1 2 rack space wide One or two transmitters can be mounted 9 one rack space Optional rack mount LA 326 not included End Temperature Operation 10 C 14 F to 40 104 F 2 Temperature Storage 20 C 4 F to 50 122 F 0 to 95 relative humidity non condensing Specifications are subject to change without notification 82 Block Diagram POWER 3 5MM Stereo On Off Red LED CHANNEL SELECT HEADPHO NE Universal Q up 115 230VAC Pow Sp PI i C Volume Power Supply CPU Module Terminal Automatic Overload Listen LCD Displa y CATS Protection Bac Kit Compression Ratio intemal adjustment Transmitter RF Board Stereo Generator Pre empha sis Processing Input Level POT DE WERT INN Q e INNEN Send Input 1 Level Select Line M Mic Mic phantom Pwr amp Mic Mic Line le i O 10d Bu 10 dr on Ui Front Pa nel ccn A ne T D 1 D Off Y 10 10 MA V V AE AA rine Female XLR 1 4 OO Combo Connector
64. l Stand Nut Wall Box Plate Mounting Screws 2 Hollow Wall Anchors with Screws 3 of each Mounting Hardware Screws 10 Security Cable attached to radiator Universal Bracket ad Corner Mount Bracket Tilt Arm A Tilt Arm B Universal Stand Nut Mounting Hardware Screws Wall Box Plate 58 A LA 140 Mounting your Radiator Wall Box Mounting The wall box mount isa prefered mounting option for the LA 140 IR Radiator The wall box mount al lows secure mounting of the radiatoras well asfor allowing the necessary cablesto be placed inside the wall Pieces Used e Wall Box Plate e Mounting Hardware Screws e Tilt Arm A e Tilt Arm B Tilt Bolt e Mounting Hardware Screws Installation Steps Tilt Arm Tilt Arm Mounting Hardware Screws E Screw Wall Box Plate to wall Screw Wall Box Plate to wall box using included Mounting Hardware Screws Wall Box Plate Tilt Bolt Wall Box Plate Mounting Screws E Attach Tilt Arm A Attach Tilt Arm A to Wall Box Plate using included Mounting Hardware Screws Attach Tilt Arm A in such a manner that it sits across Wall Box Plate not up and down on plate E Attach Tilt Arm B Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws Any of the seven holesin Swing Arm can be used forthis 59 LA 140 Mounting your Radiator
65. mitter in the daisy chain to the radiator s RF input See design guide for more information on connecting multi channel systems o P y a 8 wud C o a ES RF Signal on coaxial cable DOS 38 LT 82 Setup and Operating Instructions 5 Connect LT 82 Power to Radiator s if desired The radiator s can be powered by either the transmitter Power Output or remotely with a power supply LA 205 nearthe radiator If powering the radiator s with the transmitter connect the transmitter Power Output to the radiator Power Input with CAT 5 cable NOTE A maximum of two radiators can be powered by each LT 82 It is important not to exceed powering more than two radiators per tra nsmitter or extemal power supply RF Signal coaxial cable 6 Powering the LT 82 Plug the included power supply into the Power Input connection Plug the included power supply into the Power Input connection on the rear panel of the transmitter and then plug the power supply into an outlet ATIENTION Do notconnectthe LF82 power supply to an outlet until all other power connections within the system have been made This helps to prevent power connection degradation Press the Power button Pressthe Power button on the front panel of tra nsmitter s to tum the unit s on radiator poweron CAT 5 cable RF Signal on Coaxial cable MTS c al oi
66. n Compliance Information 141 E Warranty 141 Contacting Listen 141 0 B 2 len Stationary IR www istentech com DESIGN GUIDE iss a single sound E A pn INFRARED TECHNOLOGY Stationary Infrared Design Guide Table of Contents Infrared Technology Overview System Overview Designing a System Design Tools 5 G NJ O OY UI E Infrared Technology Overview 5 9 Infrared or IR technology uses infra red light to transmit audio without wires This type of transmission is advantageousto RF transmission because it is secure it is not susceptible to RF interference and one receiver can be used for multiple rooms within a facility The transmitter acceptsan audio signal and then frequency modulates an RF carrier at 2 3 2 8 3 3 and or 3 8MHz This ca mer along with DC power to powerthe radiator is supplied to the radiator via cables The carriers are then radiated into the room using IR emitter diodes This is the same technology used by the remote control of your IV set A receiver then receives the IR light and demodulatesthe carrier Radiator Audio Source s Receiver s IR Transmitter When designing an IR system it is important to keep the following in mind In open space when there are no reflective surfaces IR is line of sight If the receiver cannot see light f
67. nal that the receiver is receiving If the receiveris receiving a mono signal this function must be OFF If the receiver is receiving a stereo signal this function must be When to enable Stereo Mode Stereo Mode must be enabled if the receiver is receiving a stereo signal from the transmitter Channel Lock Out Default is All Channels Available Channel Lock Out function This function is used to lock out channelsfrom being accessible to the user when the Select button is pressed or when the unit is seeking fora channel in Auto Seek Mode This function is different from the Channel Lock function in that this function removes channels from being selectable whereas the Channel Lock function holds the unit on the current channel By using this program mode you can lock out any combination of channels When to Lock Out Channels If you have Auto Seek disabled default setting the unit scrollsto the next channel with each pressof the Select button If for example you have a two channel system you can use thisfeature to lock out the other two unused channels so that the user will not have to scroll through them to get to the channels with a signal If you have Auto Seek enabled and are using lessthan four channels you can use the Channel Lock Out mode to ensure the receiver will not stop on a channel without a signal If for example you are using Auto Seek Mode and have two channels active channels one and four and find that often times when
68. ngle is selected before fully tightening Tilt Bolt Attach Safety Mounting Cable The radiatorhasa safety cable attached to the top of the swing arm This cable must be attached to a secure base to prevent the radiator from falling in the event of a mounting hardware component failing Possible injury to persons and damage to the radiatorisprevented by securely attaching this cable to a base Connect CAT 5 Coaxial cables Connect CAT 5 and Coaxial cablesto appropriate locations on radiator 70 A LA 140 Mounting your Radiator Desk Table Mounting Radiator is mounted to a support bracket that can be set on any flat surface This is a flexible and non permanent mounting strategy Pieces Used A Universal Bracket Universal Bracket Tilt Arm A Tilt Bolt e Tilt Arm B Sw e Tilt Bolt e Mounting Hardware Screws Mounting Hardware Screws Installation Steps Tilt Arm A Tilt Arm B E Attach Tilt Arm A Attach Tilt Arm A to Universal Bracket using included Mounting Hardware Screws Tilt Arm A can be attached to either side of the Universal Barcket Attach Tilt Arm Attach Tilt Arm B to Swing Arm of radiator swing arm comes attached to rear of radiator using Mounting Harware Screws The bottom hole in Swing Arm must be used forthis install 71 LA 140 Mounting your Radiator Determine correct angle Determine correct an
69. oaxial RF cable Coaxial RF signal cable should never exceed 1000 feet from the source transmitter Designing a System 5 G Determine the number of audio channels You will need to order one LT 82 transmitter for each audio channel The Listen system can deliver up to four audio channels simulta neously Determine the room size and shape You should either measure the room or use the architect s plans to obtain this information Complete the room layout worksheet Complete the room layout worksheet found in the final section of this guide placing the location of the transmitters power supplies and radiators using the worksheet key The following factors will determine the coverage of the room EY Number of radiators and location Except in small roomsit is recommended that at least two radiators be used to ensure good coverage and minimal shading Listen radiators when used with Listen receivers will cover approximately 10 000 ft 929 m forone channel asindicated in the diagram below note the coverage decreasesasthe number of channels goes up Fortwo channels one radiator will cover 5 000 ft 465 m and forfour channels one radiator will cover 2 500 ft 232 m Horizontal Plane Footprint Pattern feet 50 40 30 20 Coverage pattern shown in feet 205 9 o mom omo mom mI 20 You should use the above coverage pattem to determine coverage of each radiator in y
70. ogramming if desired Additional programming options in addition to the Auto Seek and Stereo Mono Mode functions described above are the Channel Lock out and Squelch setting See page 102 fora complete explanation of the programming functions forthe receiver 94 ee _ B SF e essa ee ee A X Ga e uezc C m i X LR 42 44 Operating Instuctions NOTE The following operating instructions briefly describe how a unit operates based on which programming features have been enabled disabled with the factory default settings highlighted See page 102 for detailed information about programming and operating units using non default settings m Connect an Earphone or Headset LR 44 Model Only earphone or headset will connect to the jack on the bottom of the unit Either mono or stereo connectors may be used with Listen receivers Make sure to push the connectorall the way into the jack gt EI Position the Unit on User s Body ATTENTION If desired this step can be done after tuming the unit on and selecting a channel as long as the front of the receiver is not obstructed during the channel selection process IMPORTANT Always wear the receiver in such a way thatthere is nothing covering the front lens of the receiver If the front lens is covered or obstruct
71. ou want to lockthe unit on 2 Wait until the unit enters LED sleep mode LED mode begins when the unit exting uishes the channel indicator LED which will happen 10 seconds after the last button is pressed E Once in LED sleep mode pressand hold both the Select and Power buttons for three seconds After holding for three seconds the channel indicator LED will flash once indicating that the unit has been successfully locked Once the channel indicator LED flashes you can release the Power and Select buttons Channel Unlock Procedure The procedure for unloc king the unit isthe same aslocking the unit Lock Indicators If you press the Select button to change the channel when the unit is locked the channel indicator LED will flash four times and the unit will not change channels Follow the lock unlock procedure shown above to be able to change the channel LR 42 44 Programming Instructions Program Mode Overview The following features can be programmed within the program mode Stereo On Off Channel Lock Out Auto Seek and Squelc h The following sections outline the procedures required to enterthe program mode modify the programmable features and exit the program mode There are also several examples of how to use the program mode to change the settings of the receiver Lastly the end of this programming section providesa detailed description about each programmable feature and when they can or should be used Entering
72. our system not by trial and emor The radiator will be stronger when new and therefore isunder rated by 40 percent and the coverage pattem above accounts for this 40 percent degradation will oc cur after approximately 8 000 operating hours TERN TERN 54455 5555 e Designing System izontal Polar Pattern Vertical Polar Pattern ubiseg Designing System tisa good idea to provide over lapping coverage like in a sprinkling system of the signal whenever possible to ensure that the signal does not have drop outs In addition you should provide special radiator coverage forshaded areassuch asunder a balcony or in the front of a room where the front mounted radiators do not provide enough coverage The following dia gra ms illustrate these concepts 5 9 X 4 AA 7 OOZNO Lj UI N N LL DIJO DU OUUU 2230 OO 00000 000 07 LL GOOEY QUUNUO LU 0000 00008 Except small rooms it is recommended that at least two radiators are used to prevent shading of the IR signal 11 Design Guide 12 Designing a System If there is an area within a room such as under a balcony that is shielded from the main radiation pattern you will need to provide additional radiator s to
73. overage pattem where the distortion and noise can be higher Also if the receiveris within 10 feet of the radiatorit can cause the receiver to be saturated with IR It isa good idea to have a minimum distance of 10 feet from any radiator tum up the volume wheel all the way on my receiver but the audio level is still too low Make sure that the Input level and Transmit Level isadjusted appropriately on the transmitter Low batteriesin the receiver will also cause low output volume There is a tone in the audio Make sure the test tone button on the transmitter is OFF Also make sure that two transmitters are not on the same channel in a multi channel system I cannot change the channel on my receiver If when you attempt to change the channel the channel indicator LED only flashes but does not change channel the receiver islocked on the current channel See page 101 for information on unlocking the unit 22 D 3 D lt Supplementary Troubleshooting Troubleshooting I cannot get my receiverto scroll to the channel wantto use There are two reasons why the receiver would not scroll to the channel want the unit to be on The first is that the unit is in Auto Seek mode and is not finding a signal on the channel you are trying to tune the unit to See page 102 for more information about Auto Seek mode The second isthat the unit is programmed to not tune to the channel you are trying to tune it to
74. ower in D Bowen 5 5 2 Height Angle esoo list Power in Power out Power 5 o E 8 out 9 ES o o Power in 9 D sewer 9g O 5 O hd 5 E lt 2 mal Height Angle LA 205 Power swev 4 optional Power out Length of cable CAT 5 Length of cable Height Angle LA 205 Power swev 4 optional Power out Length of cable CAT 5 Length of cable Height Angle LA 205 Power optional Power out Power in Length of cable CAT 5 Length of cable Angle LA 205 Power swev 4 optional Power out Power in Length of cable CAT 5 Length of cable Power in Power in 23 Y 5 9 i Design Guide ELIT ER Ten 60 5 M vu 9971 1534V3N Ol dIANNON 51 31184 N31511 T 9 2 40181083 A 8 O o e y 318 2 JO 14 j1nsay JOLVIOVY TR ELELEE zum IIWAN 3OLVIOVH 9018103183 00118513903 AH 25 System Matenals Worksheet Stationary IR Transmitter Power Cord USA UK Ja 00 024 Transmitters LT 82 01 LT 82 02 LT 82 03 amy OC Universal Rack Mount Kit Mounts two LT 82 units Transmitter Rack Mounting Part Number LA 326 mm
75. r CAT 5 cable The LT 82 5 specified Specification LT 82 Output Two 2 BNC connectors for connection to radiator s and or additional transmitter s 50 mV 50 ohm 15 dBm RF Input One 1 BNC connector for connection from additional transmitter s 2 50 mV 50 ohm 15 dBm FCC Part 15 Industry Canada CE RoHS A system specifications are wireless end to end System Frequency Response 63Hz 15kHz 3dB System Signal to Noise Ratio A weighted MOROSAGUSB m Sign i i wei LA IEEE udis Stereo gt 52dB System Distortion 296 total harmonic distortion THD tomes Mono Input Rear Panel Female XLR and 1 4 in combo connector balanced 0 Audio Input 1 55dBu line mic nominal input level adjustable 30 21dBu mic line maximum input level impedance 20k 1k ohms line mic phantom power 12VDC Stereo or Mono Input Rear Panel Two Phono connectors unbalanced 10 10dBu nominal input level adjustable 30dBu maximum impedance 100k ohms Input 1 and Input 2 Mixed Output Rear panel Two 2 Phono connectors unbal Some anced 10dBu nominal output level 19dBu maximum impedance 10 ohms Front panel One 3 5mm connector unbalanced adjustable output level 7dBu Heaaphone Qutpun Moniten maximum impedance 10 ohms 100mW 32 ohms 3 5mm stereo Power Test Tone on off Channel up down Input Level Transmit Level Contour Front Panel Headset Level Controls Input 1 Leve
76. rm B Use the Tilt Bolt to fasten the tilt arms together ATTENTION Note the angle measurements on Tilt Arm and verify that the correctangle is selected before fully tightening Tilt Bolt 66 A LA 140 Mounting your Radiator Attach Safety Mounting Cable The radiatorhasa safety cable attached to the top of the swing am This cable must be attached to a secure base to prevent the radiator from falling in the event of a mounting hardware component failing Possible injury to persons and damage to the radiatoris prevented by securely attaching this cable to a base Connect 5 and Coaxial cables Connect 5 and Coaxial cablesto appropriate locations on radiator 67 LA 140 Mounting your Radiator Ceiling Mountin Description Radiator is mounted on the ceiling with or without a wall box available for this use Pieces Used Wall Box Plate e Hollow Wall Mounting Screws if attaching to wall box or Hollow Wall Anchors with Screws if attached to hollow wall e Tilt Arm A e Tilt Arm e Tilt Bolt e Mounting Hardware Screws u Anchors with Wall Box Plate U Tilt Bolt DI Hollow Wall Anchors with Screws Wall Box Plate Mounting Screws wg 55 Tilt Arm A Tilt Arm B Mounting Hardware Screws Installation Steps E Attach Wall Box Plate securely to ceiling Attach Wall Box Plate securely to ceiling If using wall box attach Wall Box Plate to
77. rm B e Tilt Bolt e Mounting Hardware Screws Installation Steps Tilt Arm Tilt Arm B Mounting Hardware Screws E Fasten Wall Box Plate to wall Fasten Wall Box Plate securely to wall using Hollow Wall Mounting Screws ATTENTION The Wall Box Plate must be used in this installation to provide a secure base for the radiator to be mounted on E Attach Tilt Arm A Attach Tilt Arm A to Wall Box Plate using included Mounting Hardware Screws Attach Tilt Arm A in such a manner that it sits across Wall Box Plate not up and down on plate 61 LA 140 Mounting your Radiator ES Attach Tilt Arm B Attach Tilt Arm to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws Any of the seven holes in Swing Arm can be used for this Pull CAT 5 and Coaxial cables through necessary Pull CAT 5 and Coaxial cables through hole in Wall Box Plate Determine correct angle Determine correct angle setting to use forthe radiator using the design guide see page 13 of design guide 6 Attach Radiator to Wall Box Plate Attach Radiator to Wall Box Plate using Tilt Arm A and Tilt Arm B Use the Tilt Bolt to fasten the arms together ATTENTION Note the angle measurements on Tilt Arm and verify that the comectangle is selected before fully tightening Tilt Bolt 62 LA 140 Mounting your Radiator
78. rom the radiator it will not receive the audio signal It is important to provide sufficient IR coverage within a facility so users will not have drop outsof the IR signal This design guide will help you do this e In facilities that have reflective and lighter colored surfaces the IR light will be reflected and you can achieve greater coverage For example when emitting in a very large room like an exhibit hall you will notice that you need to point the receiverdirectly at the radiatorto pick up the signal However when the radiator is placed in a smaller room for example 50 ft 14 6 m square with white walls you will experience much better coverage This is because the IR signal is being reflected in many different directions increasing coverage e Listen systems use higher modulation frequencies that make the system less susceptible to light interference from fluorescent lights and other sources However the system is not immune from interference from sourcesthat create IR light such assunlight and plasma displa ys e Listen products are compatible with other manufacturers who use the same modulation frequencies 2 3 2 8 3 3 3 8 MHZ Design Guide System Overview There are three main components of any Stationary IR system the transmitter radiator emitter and receiv ers LT 82 Transmitter LA 140 Radiator Single Channel System A single channel system consists of one LT 82 transmitter and one or more ra
79. rresponding LED in the channel indicator LEDs being lit unless unit is in LED sleep mode To check which channel the unit ison without changing the current channel while the unit is LED sleep mode press either the PWR or Select button once This will tum the channel indicator LEDs back on for 10 seconds 8 Auto Shut Off Feature The receiver will automatically turn off in the two following situations E After 10 seconds After 10 seconds if there is no headset plugged into the headset jack LR 44 model only This allowsfora quick battery status check without having to plug in a headset This function is also disabled while in Program Mode EI After 30 minutes After 30 minutes if no signal isdetected by the receiver both models 9 Powering down the unit To power down the unit pressand hold the PWR button for 1 5 seconds All of the LEDs will light up momentarily and then tum off signaling power has been shut off LR 42 44 Loc king Instructions Locking the Receiver on One Channel The unit can be electronically locked on one channel so that it will not change channel even if the Select button is pressed lt is recommended to lock the receivers on the channel that is being used in systemsthat do not require the user to change channels single channel systems Channel Lock Procedure The unit can be electronically locked on the channel it is currently on using the following process Select the channel that y
80. ssories for LR 42 LR 44 115 LR 42 44 Package Contents e 42 IR Stethoscope 4 Channel Receiver or LR 44 IR Lanyard 4 Channel Receiver e Quick Reference Card LR 42 LR 44 Listen Part Number LR 42 LR 44 LR 42 IR Stethoscope Receiver Specifications Architectural Specification The IR stethoscope receiver shall be capable of receiving on four carriers 2 3 2 8 3 3 3 8 MHz and the channel shall be displayed on one of four front panel LEDs The receiver shall be capable of being locked on a channel The receiver shall be capable of receiving a stereo signal on each of the four ca mers The receiver shall have a SNR of 60 db or greater and have built in squelch control The device shall have an audio frequency response of 63 Hzto 15 kHz 47 and shall have distortion of less than 2 The device shall operate for 30 hours with two AAA alkaline batteries and 15 hours with two AAA NiMH rechargeable batteries The receiver shall be covered by a limited lifetime warranty The LR 42 is specified Specifications LR 42 Selectable 23 MHz 28 MHz 3 3 MHz 3 8 MHz Number of Channels Four 4 selectable channels A system specifications are wireless end to end System Frequency Response 0 0 Frequency Response System Frequency Response 63Hz2 15kHz 3dB System Signal to Noise Ratio gt 60dB A weighted Stereo Stereo Bl Audio Output Jacks 3 5 mm connector EE mono or stereo headphones
81. the transmitter is delivered using 50 ohm RG 58 coaxial cable Each radiator is supplied with 25 feet 7 6 meters of CAT 5 and RG 58 coaxial cable Up to 100 LA 140 radiators can be daisy chained together using RG 58 cable to provide sufficient IR power for most applications Up to four LT 82 transmitters can p pp be daisy chained together using RG 58 cable to create a LA 140 IR Radiator multi channel system lt RG 58 50 ohm Cable op ms Power CAT 5 Cable et 4 IR LR 42 IR Stetho Receiver RF RG 58 50 ohm Cable 4 Power CAT 5 Cable LA 89 RG 58 Multi carrier gt 2 IR Interconnection Cable included LR 44 IR Lanyard Receiver LA 140 IR Radiator Radiator Power Radiators can be powered from the LT 82 up to two radiators or an additional power supply LA 205 can power up to two radiators Radiator RF RF from the last LT 82 must be daisy chained from radiator to radiator LT 82 Stationary IR Transmitter e 5 9 5 8 System Overview Key Concepts of Designing Stationary IR System Each LT 82 transmitter used can power two LA 140 radiators Each 11 82 transmitter used can powerup to two LA 140 radiators If you design a system that requires more radiatorsthan the transmitters can power you need to orderadditional LA 205 power supplies Each LA 205 can powerup to two LA 140 Radiators Up to four LT 82 transmitters can be
82. tion frequencies it is possible that the RF signal arrivesto different radiators at different times This delay can cause the IR carriersto add out of phase and cause the signalto drop out To solve this problem Listen has provided a delay compensation adjustment on each radiator This design guide will help you calculate the setting forthis adjustment As the number of channels increases the effective radiated coverage declines Asthe numberof channels increases the effective radiated coverage declines For example a two channel system will have half the coverage of a single channel system If isimportant to increase the number of radiatorsfor multiple channel systems A The coverage patterns provide coverage of the system assuming no reflection The coverage patterns provided by Listen provide coverage of the system assuming no reflection In addition the radiatorhasbeen underrated to account for system degradation asthe IR emitting LEDs age overtime It isimportant to design the system based on these coverage pattemsand not by trial and error The reason forthisisthat the coverage pattem will be stronger when the radiator is new A system that hasadequate coverage today may not have adequate coverage in the future if not designed according to the specified coverage patterns of the radiator The maximum length of CAT 5 power cable CAT 5 powercable should never exceed 1000 feet from the source power supply The maximum length of c
83. to the radiator Record the value of each radiatorin the RDTcolumn See example below 3 Cable Delay CD Determine and record the propagation delay of the coaxial cable being used For Listen coaxial cable the delay is 1 54 ns ft or 5 05 nym This information can be obtained from the specification sheets supplied by the cable manufacturer 4 Calculate the delay setting for each radiator Now calculate the dela y setting for each radiator using the Dela y Compensation Calculator The calculator uses the following formula to determine the delay setting of each radiator Delay Setting DFR CD 25 NOTE If your calculations suggest a delay setting greater than nine please contact Listen Technologies tech support for more information 16 ZZ 3 c i X CQ X NYI Gai G X Designing System 5 COMPENSATION CALCULATOR PROPAGATION RADIATOR DFR RESULT DELAY OF CABLE DELAY SETTING 20 OM zoo u la LISTEN CABLE 15 ROUNDED TO 1 5 dl 5 05 Fn NEAREST ad SEM WHOLE HUMBER Complete the system materials worksheet Complete the system materials worksheet that determines
84. to wall box using included Mounting Hardware Screws En If attaching directly to a hollow wall Wall Box Plate must be installed four inches from corner attach Wall Box Plate securely to wall using included Hollow Wall Mounting Screws ATTENTION The Wall Box Plate must be used in this installation to provide a secure base for the radiatorto be mounted on 64 LA 140 Mounting your Radiator Attach Corner Mount Bracket Attach Corner Mount Bracket to Wall Box Plate using included Mounting Harware Screws Use all four available holesto ensure a secure attachment Attach Tilt Arm A Attach Tilt Arm A to Corner Mount Bracket Determine correct placement of Tilt Arm A by holding Radiator up to Corner Mount Bracket and determining desired position in corner y a Attach Tilt Arm Attach Tilt Arm to Swing Arm of radiator swing arm comes attached to rear of radiator using included Mounting Hardware Screws Any ofthe seven holesin Swing Arm can be used forthisconnection 65 LA 140 Mounting your Radiator Pull 5 and Coaxial cables through Pull CAT 5 and Coaxial cables through hole in Wall Box Plate if necessary Determine correct angle Determine correct angle setting to use forthe radiator using the design guide see page 13 of design guide Attach Radiator to Corner Mount Bracket Attach Radiator to Corner Mount Bracket using Tilt Arm A and Tilt A
85. ton and hold to tum unit off Pressto change the channel also used with programming function 89 90 LR 44 Quick Reference Lanyard LR 44 model only Holds receiver in place below chin of wearer Channel Indicator LEDs Displays which channel the unit is currently tuned to Also can display battery e level etc Receiver Lens Lens covers the IR receiving components ensure entire lens is visible during use Volume Control Dial Use to adjust volume levelin speaker s Power Button Press to tum unit on press Select Button and hold to tum unit off Pressto change the channel also used with rogramming function Lanyard Adjustment Ball amp prog g LR 44 model only Adjust the loop size of the lanyard by pulling on this Headset Jack LR 44 model only ball usually done after Acceptsany earpiece with a unit is on user s body 3 5 mm TRSconnector LR 42 44 Setup Instuctions the Product Remove outer packaging and plastic cover Verify all components are present and that no physical damage has occurred to the product Determine Battery Type to Used Alkaline Batteries If using alkaline batteries install them in alkaline battery compartment attached to rear of unit using the following process purc hase Listen part number LA 363 E Remove alkaline battery compartment Press down on compartment and push towardsthe bottom of unit 06
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