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Manual Listen Technologies LA-351

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    Dear Valued 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 VDWLVÀHG7KDW·VZKZHLQGHSHQGHQWOFHUWLIWKHPWRWKHKLJKHVWTXDOLW standards ...

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    LR-42/44 Design Guide LT-82 LA-140 LR-42/44 LA-350/351 Supplementary Design Guide LT-82 LA-140 Supplementary LR-42/44 LA-350/351 Design Guide Infrared Technology Overview 5 System Overview 6 Designing a System 9 D e s i g n T o o l s 2 1 LT-82 Stationary IR Transmitter 6SHFLÀFDWLRQV   %ORFN? ...

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    Design Guide Design Guide Stationary Infrared Design Guide Table of Contents Infrared Technology Overview 5 S y s t e m O v e r v i e w 6 Designing a System 9 D e s i g n T o o l s 2 1 ...

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    Design Guide Design Guide Design Guide ...

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    5 Design Guide Design Guide Infrared Technology Overview Infrared or “IR” technology uses infrared light to transmit audio without wires. This type of transmission is advantageous to 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 ...

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    6 Design Guide Design Guide Design Guide System Overview 7KHUHDUHWKUHHPDLQFRPSRQHQWVRIDQ6WDWLRQDU,5VVWHPWKHWUDQVPLWWHUUDGLDWRUHPLWWHUDQGUHFHLY - ers. A single channel system consists of one LT-82 transmitter and one or more radiators. The diagram below shows such a system with one radiator ...

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    7 Design Guide Design Guide Design Guide System Overview A multiple channel system consists of two to four LT-82 transmitters and one or more radiators. The diagram EHORZVKRZVVXFKDVVWHPZLWKWZRUDGLDWRUV7KHUDGLDWRUVDUHSRZHUHGIURPWKHSRZHUVXSSOIURPWKHÀUVW transmitter. This power supply can ...

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    8 Design Guide Design Guide Design Guide System Overview Each LT-82 transmitter used can power up to two LA-140 radiators. If you design a system that requires more radiators than the transmitters can power, you need to order additional LA-205 power supplies. Each LA-205 can power up to two LA-140 Radiators. K ey C oncepts of Designing a Stationar ...

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    9 Design Guide Design Guide Design Guide Designing a System You will need to order one LT-82 transmitter for each audio channel. The Listen system can deliver up to four audio channels simultaneously. 1 Determine the number of audio channels <RXVKRXOGHLWKHUPHDVXUHWKHURRPRUXVHWKHDUFKLWHFW·VSODQVWRREWDLQWKLV ...

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    10 Design Guide Design Guide Design Guide Designing a System Horizontal Polar P attern V er tical Polar P attern Single Channel Sy stem Single Channel Sy stem ...

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    11 Design Guide Design Guide Design Guide Designing a System In this example a total of four radiators , one in each corner , ensures good co verage at all loc ations and orientations. Exc ept in small rooms, it is recommended that at least tw o radiators are used to pre vent shading of the IR signal. It is a good idea to provide over-lapping cover ...

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    12 Design Guide Design Guide Design Guide 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 pro vide additional radiator(s) to co ver this area. ...

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    13 Design Guide Design Guide Design Guide Designing a System To double the radiator power, it is possible to vertically or horizontally mount two radiators together using the /$'XDO5DGLDWRU0RXQWLQJ%UDFNHWVROGVHSDUDWHO7KLVLVKLJKOUHFRPPHQGHGLQODUJHUURRPV RAD 1 RAD 2 3B It is critic ...

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    14 Design Guide Design Guide Design Guide Designing a System 'HWHUPLQHWKHQXPEHURIUDGLDWRUVUHTXLUHGEDVHGRQWKHVL]HDQGVKDSHRIWKHURRP%DVHGRQVWHSWZRLW is recommended that you draw the room out indicating the location of each radiator in the room and cable runs from the transmitter(s) ...

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    15 Design Guide Design Guide Design Guide Complete the system layout worksheet for Power and RF cable lengths, delay compensation, required number of power supplies, and height and angle of radiators. Refer to the system layout worksheet example below. 5 Complete the system layout w orksheet Designing a System ...

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    16 Design Guide Design Guide Design Guide Designing a System 5A Cross out the LT-82 transmitters not required in your system. Cross out the L T -82 transmitters 5B Determine how many radiators will be used on each radiator daisy chain by reviewing the room layout work- sheet. Cross out the unused radiators on the system layout worksheet. Determine ...

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    17 Design Guide Design Guide Design Guide Designing a System Complete the system materials worksheet that determines the quantity of each part number required for your VVWHP8VHWKH5RRPDQG6VWHP/DRXW:RUNVKHHWVWRÀOOLQWKLVIRUPIRXQGLQWKHODVWVHFWLRQRIWKLVJXLGH 6 Complete the system mate ...

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    18 Design Guide Design Guide Design Guide Designing a System 6D Since the radiator comes with most radiator mounting options, there are only two additional choices. Radiator Mounting Options The LA-342 dual radiator mounting bracket allows you to mount two radiators together (vertically or horizontally). This includes short lengths of coaxial RF an ...

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    19 Design Guide Design Guide Design Guide Notes ...

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    21 LA-140 LT-82 Design Guide Design Guide Design Guide KEY L T-82 LA-140 RG-58 CA T-5 Room Layout Worksheet ...

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    Design Guide Design Guide System Layout Worksheet 23 ...

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    25 LA-140 LT-82 Design Guide Design Guide Design Guide ...

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    27 Design Guide Design Guide Design Guide System Materials Worksheet T ransmitters Description Stationary IR T ransmitter Pow er Cord USA UK Euro Part Number L T -82-01 L T -82-02 L T -82-03 Quantity T ransmitter Rack Mounting Description Universal Rack Mount Kit (Mounts two L T -82 units) Part Number LA-326 Quantity Radiators Description Stationar ...

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    33 LT-82 Design Guide Design Guide LT-82 LT-82 Package Contents • LT-82 IR Transmitter • LA-205 Power Supply • LA-89 IR Interconnection Cable ,56VWHP'HVLJQ*XLGHDQG8VHU·V0DQXDO • LT-82 Quick Reference Card /LVWHQ&RQÀJXUDWLRQV • LT-82-01 (North America) /78. • LT-82-0 ...

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    35 LT-82 Design Guide Design Guide LT-82 /76SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 7KH6WDWLRQDU,57UDQVPLWWHUVKDOOEHFDSDEOHRIEURDGFDVWLQJRQIRXUPRQRRUVWHUHRFDUULHUVDQG0+]&KDQQHO selection shall be capable of being lo ...

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    36 LT-82 LT-82 Design Guide Design Guide LT-82 LT-82 Block Diagram Universal Power Supply LA-205 (provided) 115/230V AC 50/60hz Power Supply CPU Module 30VDC, 1.5A Red LED On Up Off Down Vo l u m e POWER CHANNEL SELECT HEADPHONE Listen LCD Display Backlit Input 1 VU Meter Input 2 VU Meter Transmitter RF Board Stereo Generator Pre-emphasis Processin ...

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    37 LT-82 Design Guide Design Guide LT-82 LT-82 Quick Reference 3RZHU212)) 7HVW7RQH$FWLYDWHVD tone to aid system setup ,QSXWDQG Adjust audio input levels of Input 1 and Input 2 here ,QSXW/HYHO,QGLFDWRUV6KRZV,QSXW and Input 2 levels. 7UDQVPLW/HYHO,QGLFDWRU6KRZVPL[HG? ...

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    38 LT-82 LT-82 Design Guide Design Guide LT-82 LT-82 Setup and Operating Instructions 1 Unpack the Product Remove outer packaging and plastic cover. Verify all components are present and no physical damage has occurred to the product. 2 If rack mounting the transmitter(s), install the optional rack mount kit (part LA-326) according to the instructi ...

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    39 LT-82 Design Guide Design Guide LT-82 LT-82 Setup and Operating Instructions 5 The radiator(s) can be powered by either the transmitter Power Output or remotely with a power supply (LA-205) near the radiator. If powering the radiator(s) with the transmitter, connect the transmitter Power Output to the radiator Power Input with CAT-5 cable. NOTE: ...

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    40 LT-82 LT-82 Design Guide Design Guide LT-82 LT-82 Setup and Operating Instructions 7 Select Operating Channel 7A 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. Select the operating channel 7C After channels have been selected, the t ...

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    41 LT-82 Design Guide Design Guide LT-82 8 Connect Audio Inputs 7KH/7KDVWZRDXGLRLQSXWRSWLRQV,QSXWDQG,QSXW,QSXWLVD balanced connection using either an XLR or 1/4” phono connector. Input 2 has two unbalanced mixing phono connectors. Use Input 1 if you are using a microphone or ...

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    42 LT-82 LT-82 Design Guide Design Guide LT-82 10 Set Auto- Timeout F eature 10A If 30 minutes passes without audio to transmitter the unit will stop sending a signal to the r adiators 10B T o disable or enable Auto- Timeout Feature Y our transmitter is shipped to y ou with the Auto- T imeout Feature enabled Your transmitter is shipped to you with ...

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    43 LT-82 Design Guide Design Guide LT-82 Accessories for LT-82 LA-326 Universal 5DFN0RXQWLQJ.LW Will mount up to two LT-82 units LA-112 RG-58 50 Ohm Coaxial Cable Specify length LA-70 CAT-5 Cable Specify length LA-72 RJ-45 to RJ-45 CAT-5 Coupler LA-115 5*%1&WR %1&&RXSOHU LA-71 RJ-45 CAT-5 Connector (Pkg. of ...

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    44 LT-82 LT-82 Design Guide Design Guide LT-82 Notes ...

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    45 LT-82 Design Guide Design Guide LT-82 Notes ...

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    46 LT-82 LT-82 Design Guide Design Guide LT-82 Notes ...

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    LT-82 Design Guide Design Guide LA-140 LA-140 Package Contents • LA-140 Stationary IR Radiator • IR Radiator Quick Reference Card • 25 feet RG-58 Coaxial Cable • 25 feet CAT-5 Power Cable /LVWHQ&RQÀJXUDWLRQV • LA-140-GY (grey) • LA-140-WH (white) LA-140 User’s Manual Table of Contents 6SHFLÀFDWLRQV  ...

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    53 LA-140 LT-82 Design Guide Design Guide LA-140 /$6SHFLÀFDWLRQV Specications LA-140 RF Fr equency R ange 1 MHz - 5 Mhz Input BNC C onnection. -25dbm to -5dbm input nominal Output BNC Connection. -15 dbm nominal Compliance FCC P art 15, I ndustry Canada, CE, RoHS Coverage Ar ea 10,000 ft 2 (929 m 2 ) when used with Listen Receive ...

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    54 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 Quick Reference 3RZHU5HG This red LED is lit when there is power to the radiator. 1R&RQQHFWLRQ<HOORZ This yellow LED is lit when the radiator is not connected to a transmitter or radiator. 5),QSXW Input RF signal from a transmitter or radiator here. 5 ...

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    55 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 Setup and Operating Instructions 1 Unpack the Product Remove outer packaging and plastic cover. Verify all components are present and that no physical damage has occurred to the product. 2 Mount Radiator 2A Generally a higher location with a clear line of sight to the area the receivers will b ...

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    56 LA-140 LT-82 Design Guide Design Guide LA-140 6 Set T ermination S witch 6A Always set the termination switch to the “ON” position in single radiator systems. Single Radiator S ystems 7 If desired, the three LED indicators on the front of the radiator can be disabled using this switch. Set this switch to the position towards the left side of ...

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    57 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 Setup and Operating Instructions 8 If using a Listen LT-82 Transmitter with the Listen LA-140 Radiator leave this switch in the “OFF” position. ,IRXDUHXVLQJWKH/LVWHQ/$5DGLDWRUZLWKDQRWKHUPDQXIDFWXUHU·VWUDQVPLWWHUPRGXODWRUVHWWKLV swi ...

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    58 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator Over view 7KHUHDUHVHYHUDOGLIIHUHQWFRQÀJXUDWLRQVWKDWWKHUDGLDWRUFDQEHPRXQWHGLQ$OORIWKHPH[FHSWIRU WKH´'XDO5DGLDWRU0RXQWLQJ&RQÀJXUDWLRQVµFDQEHDFFRPSOLVKHGXVLQJWKHPRXQWLQJK ...

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    59 LA-140 LT-82 Design Guide Design Guide LA-140 W all Box Mounting The wall box mount is a preferred mounting option for the LA-140 IR Radiator. The wall box mount al- lows secure mounting of the radiator as well as for allowing the necessary cables to be placed inside the wall. 3LHFHV8VHG :DOO%R[3ODWH • Mounting Hardware Screw ...

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    60 LA-140 LT-82 Design Guide Design Guide LA-140 4 3XOO&$7DQG&RD[LDOFDEOHVWKURXJKKROHLQ:DOO%R[3ODWH Pull CA T -5 and Coaxial c ables through (if necessary) 5 Determine correct angle setting to use for the radiator using the design guide, see page 13 of design guide. Determine correct angle 6 $WWDFK5DGL ...

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    61 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator Hollow W all Mounting A hollow wall installation is not as preferrable as a wall box installation but can be done without problems. 7KHKROORZZDOOLQVWDOODWLRQVWLOOUHTXLUHVWKH:DOO%R[3ODWHWREHXVHG 3LHFHV8VHG :DOO%R[? ...

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    62 LA-140 LT-82 Design Guide Design Guide LA-140 3 $WWDFK7LOW$UP´%µWR6ZLQJ$UPRIUDGLDWRUVZLQJDUPFRPHVDWWDFKHGWRUHDURIUDGLDWRUXVLQJLQFOXGHG0RXQWLQJ Hardware Screws. Any of the seven holes in Swing Arm can be used for this. Attach Tilt Arm “B” 4 3XOO&$7DQG&R ...

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    63 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator 8 Connect CAT-5 and Coaxial cables to appropriate locations on radiator. Connect CA T -5 and Coaxial cables 7 The radiator has a 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 th ...

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    64 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator Corner Mounting The radiator is mounted in the corner of a room with or without a wall box available for this use. A wall box must be at least four inches from the corner if using for this install. 3LHFHV8VHG :DOO%R[3ODWH • Mounting Hardware Screw ...

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    65 LA-140 LT-82 Design Guide Design Guide LA-140 2 $WWDFK&RUQHU0RXQW%UDFNHWWR:DOO%R[3ODWHXVLQJLQFOXGHG Mounting Harware Screws. Use all four available holes to ensure a secure attachment. Attach Corner Mount Brack et 3 $WWDFK7LOW$UP´$µWR&RUQHU0RXQW%UDFNHW'HWHUPLQHFRUUHFWS ...

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    66 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator 5 3XOO&$7DQG&RD[LDOFDEOHVWKURXJKKROHLQ:DOO%R[3ODWHLIQHFHVVDU Pull CA T -5 and Coaxial c ables through 6 Determine correct angle setting to use for the radiator using the design guide, see page 13 of design g ...

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    67 LA-140 LT-82 Design Guide Design Guide LA-140 9 Connect CAT-5 and Coaxial cables to appropriate locations on radiator. Connect CA T -5 and Coaxial cables LA-140 – Mounting your Radiator 8 The radiator has a 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 th ...

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    68 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator Ceiling Mounting 'HVFULSWLRQ5DGLDWRULVPRXQWHGRQWKHFHLOLQJZLWKRUZLWKRXWDZDOOER[DYDLODEOHIRUWKLVXVH 3LHFHV8VHG :DOO%R[3ODWH • Hollow Wall Mounting Screws (if attaching to wall box) or Hollow ...

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    69 LA-140 LT-82 Design Guide Design Guide LA-140 2 3 $WWDFK7LOW$UP´%µWR6ZLQJ$UPRIUDGLDWRUVZLQJDUPFRPHVDWWDFKHGWRUHDURIUDGLDWRUXVLQJLQFOXGHG Mounting Hardware Screws. It is recomended that the top hole of the radiator swing arm be used using included mounting hardware screws in this in ...

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    70 LA-140 LT-82 Design Guide Design Guide LA-140 6 8 $WWDFK5DGLDWRUWR:DOO%R[3ODWHXVLQJ7LOW$UP´$µDQG7LOW$UP´%µ8VHWKH7LOW%ROWWRIDVWHQWKHWLOWDUPVWRJHWKHU ATTENTION: Note the angle measurements on Tilt Arm “B” and verify that the correct angle is selected before fully ...

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    71 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator Desk/T able Mounting 5DGLDWRULVPRXQWHGWRDVXSSRUWEUDFNHWWKDWFDQEHVHWRQDQÁDWVXUIDFH7KLVLVDÁH[LEOHDQG non-permanent mounting strategy. 3LHFHV8VHG 8QLYHUVDO%UDFNHW • Tilt Arm “A” ? ...

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    72 LA-140 LT-82 Design Guide Design Guide LA-140 3 Determine correct angle setting to use for the radiator using the design guide, see page 13 of design guide. Determine correct angle 4 $WWDFK5DGLDWRUWR'HVN0LF6WDQGXVLQJ7LOW$UP´$µDQG7LOW$UP´%µ8VHWKH7LOW%ROWWRIDVWHQWKHWLOWD ...

  • Listen Technologies LA-351 - page 79

    73 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator Microphone Stand Mounting Radiator is mounted on a standard microphone stand. 3LHFHV8VHG 8QLYHUVDO%UDFNHW • Universal Stand Nut • Tilt Arm “A” 7LOW$UP´%µ 7LOW%ROW Installation Steps 1 $WWDFK8QLYHUVDO%UDFNHWWR0 ...

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    74 LA-140 LT-82 Design Guide Design Guide LA-140 4 Determine correct angle setting to use for the radiator using the design guide, see page 13 of design guide. Determine correct angle setting 5 $WWDFK5DGLDWRUWR'HVN0LF6WDQGXVLQJ7LOW$UP´$µDQG7LOW$UP´%µ8VHWKH7LOW%ROWWRIDVWHQWKH ...

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    75 LA-140 LT-82 Design Guide Design Guide LA-140 LA-140 – Mounting your Radiator T ripod Stand Mounting Radiator is mounted on a tripod stand. If Listen part number LA-337 is used the radiator can be mounted up to nine feet high. 3LHFHV8VHG • Universal Stand Nut 8QLYHUVDO%UDFNHW • Tilt Arm “A” 7LOW$UP´%µ ? ...

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    76 LA-140 LT-82 Design Guide Design Guide LA-140 3 $WWDFK7LOW$UP´%µWR6ZLQJ$UPRIUDGLDWRUVZLQJDUPFRPHVDWWDFKHGWRUHDURIUDGLDWRUXVLQJLQFOXGHGPRXQWLQJ hardware screws. The bottom hole in Swing Arm must be used for this install. Attach Tilt Arm “B” 4 Determine correct angle setting t ...

  • Listen Technologies LA-351 - page 83

    77 LA-140 LT-82 Design Guide Design Guide LA-140 Dual R adiator Mounting It is possible to mount two Listen LA-140 Radiators either side by side or on top of each other using the /$'XDO5DGLDWRU0RXQWLQJ%UDFNHWVROGVHSDUDWHO7KHPRXQWLQJVWUDWHJLVYHUVLPLODUWRDOORI the previous s ...

  • Listen Technologies LA-351 - page 84

    78 LA-140 LT-82 Design Guide Design Guide LA-140 Accessories for LA-140 LA-112 RG-58 50 Ohm Coaxial Cable specify length LA-205 IR Extended Power Supply (powers two LA-140 radiators) 1RWH<RXZLOORQOQHHGWKH/$LIRX are using more than two LA-140 radiators per LT-82 transmitter or if you wish to remote powe ...

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    79 LA-140 LT-82 Design Guide Design Guide LA-140 Notes ...

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    80 LA-140 LT-82 Design Guide Design Guide LA-140 Notes ...

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    LA-140 LT-82 Design Guide Design Guide LR-42/44 Listen Part Number • LR-42 • LR-44 LR-42/44 User’s Manual Table of Contents LR-42/LR-44 4-Channel IR Receivers 6SHFLÀFDWLRQV   LR-42 Quick Reference Page 89 LR-44 Quick Reference Page 90 Setup Instructions 91 Operating Instructions 95 Locking Instruc ...

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    87 LA-140 LT-82 Design Guide Design Guide LR-42/44 /5,56WHWKRVFRSH5HFHLYHU6SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 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 loc ...

  • Listen Technologies LA-351 - page 94

    88 LA-140 LT-82 Design Guide Design Guide LR-42/44 /5/DQDUG,55HFHLYHU6SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ The Lanyard IR 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 will accept mono or stereo earphones ...

  • Listen Technologies LA-351 - page 95

    89 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42 Quick Reference 1 23 4 ,55HFHLYHU/HQV/HQVFRYHUVWKH IR receiving components, ensure entire lens is visible during use 3RZHU%XWWRQ Press to turn unit on, press and hold to turn unit off 6HOHFW%XWWRQ Press to change the channel, also used with programming f ...

  • Listen Technologies LA-351 - page 96

    90 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-44 Quick Reference 1 23 4 ,55HFHLYHU/HQV/HQVFRYHUVWKH IR receiving components, ensure entire lens is visible during use 3RZHU%XWWRQ Press to turn unit on, press and hold to turn unit off 6HOHFW%XWWRQ Press to change the channel, also used with programming f ...

  • Listen Technologies LA-351 - page 97

    91 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Setup Instructions 1 Unpack the Product Remove outer packaging and plastic cover. Verify all components are present and that no physical damage has occurred to the product. 2 $ONDOLQH%DWWHULHV,IXVLQJDONDOLQHEDWWHULHVLQVWDOOWKHPLQDONDOLQHEDWWHUFRPSDUWPHQ ...

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    92 LA-140 LT-82 Design Guide Design Guide LR-42/44 5HFKDUJHDEOH1L0+EDWWHULHV7RXVHUHFKDUJDEOH1L0+EDWWHULHVLQWKHUHFHLYHURXZLOOQHHGWRSXUFKDVH DQ1L0+UHFKDUJHDEOHEDWWHUSDFN/LVWHQSDUWQXPEHU/$ IMPORTANT: Do not install AAA NiMH batteries in included alkaline bat ...

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    93 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Setup Instructions 3 Connect an 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 may be used with Listen receivers. Make sure to push the connector all the way into the jack. 4 T urn Unit On T ...

  • Listen Technologies LA-351 - page 100

    94 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Setup Instructions 5 The Select button is used to change the channel. Press the button once to change the channel. The unit will either seek or scroll through the channels depending upon which channel selection method you have enabled. See below for description of possible channel selectio ...

  • Listen Technologies LA-351 - page 101

    95 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Operating Instructions 127( 7KHIROORZLQJRSHUDWLQJLQVWUXFWLRQVEULHÁGHVFULEHKRZDXQLWRSHUDWHVEDVHGRQZKLFKSURJUDPPLQJIHDWXUHV have been enabled/disabled, with the factory default settings highlighted. See page 102 for detailed information ...

  • Listen Technologies LA-351 - page 102

    96 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Operating Instructions 2B 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 XQLWFORVHUWRWKHXVHU·VFKLQ7RLQFUHDVHWKHVL]H ...

  • Listen Technologies LA-351 - page 103

    97 LA-140 LT-82 Design Guide Design Guide LR-42/44 3 Turn on the unit by pressing either button on the front of the receiver. T urn the Unit On 3A The unit will power up to the same channel that it was on when it was last turned off. Auto-Seek Disabled (Default OFF) 3B The unit will power up to the same channel that it was on when it was last turne ...

  • Listen Technologies LA-351 - page 104

    98 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Operating Instructions 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 will be necessary to ...

  • Listen Technologies LA-351 - page 105

    99 LA-140 LT-82 Design Guide Design Guide LR-42/44 7 Checking Batter y L evel and Current Channel 7A Checking Battery Level LR-42/44 Operating Instructions Adjust V olume Level Use the control dial on the top of the unit to adjust the volume to a comfortable level. 6 1 23 4 1 Tapping the power button will display the battery level on the channel in ...

  • Listen Technologies LA-351 - page 106

    100 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Operating Instructions 7B The channel the unit is currently on is represented by the corresponding LED in the channel indicator LEDs being lit (unless unit is in LED sleep mode). To check which channel the unit is on without changing the current channel while the unit is in LED sleep mode ...

  • Listen Technologies LA-351 - page 107

    101 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Locking Instructions The unit can be electronically locked on one channel so that it will not change channel even if the Select button is pressed. It is recommended to lock the receivers on the channel that is being used in systems that do not require the user to change channels (single c ...

  • Listen Technologies LA-351 - page 108

    102 LA-140 LT-82 Design Guide Design Guide LR-42/44 Program Mode Overview LR-42/44 Programming Instructions 7KHIROORZLQJIHDWXUHVFDQEHSURJUDPPHGZLWKLQWKHSURJUDPPRGH6WHUHR2Q2II&KDQQHO/RFN2XW Auto Seek and Squelch. The following sections outline the procedures required to enter the program m ...

  • Listen Technologies LA-351 - page 109

    103 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Programming Instructions Program Mode F unctionalit y Diagram Use this chart to help with navigating through, and adjusting the features within, the program mode. 3URJUDPPDEOH Feature 5HFHLYHU/(''LVSOD6KRZV 1DYLJDWLQJZLWKLQWKH3URJUDP0RGH Pressing the 6HO ...

  • Listen Technologies LA-351 - page 110

    104 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Programming Instructions Channel Lock-Out “Sub -Mode ” Instruc tions While in Channel Lock-Out “Sub -Mode ” The channels that would be available are represented by the corresponding channel indicator LED being on and the channels that would be “locked out” are represented by t ...

  • Listen Technologies LA-351 - page 111

    105 LA-140 LT-82 Design Guide Design Guide LR-42/44 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). 1 Press the Select button to advance to the next possible ...

  • Listen Technologies LA-351 - page 112

    106 LA-140 LT-82 Design Guide Design Guide LR-42/44 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 reset. 1 While in program mode, select the “Reset to Defaults” function and press the power button. 2 7KHXQLWZLOOÁDVK ...

  • Listen Technologies LA-351 - page 113

    107 LA-140 LT-82 Design Guide Design Guide LR-42/44 Programming Examples Example #1 Enter Program Mode (see page 102) 1 :KHQSURJUDPPRGHLVHQWHUHGWKHÀUVWIXQFWLRQLVDFWLYHDQGWKH/('·VZLOOVKRZ Using the functionality chart on a previous page note that this is the Stereo On/Off Function. 2 I w ant to tur ...

  • Listen Technologies LA-351 - page 114

    108 LA-140 LT-82 Design Guide Design Guide LR-42/44 Programming Examples Example #3 Enter Program Mode. 1 :KHQSURJUDPPRGHLVHQWHUHGWKHÀUVWIXQFWLRQLVDFWLYHDQGWKH/('·VZLOOVKRZ Using the functionality chart on a previous page note that this is the Stereo On/Off Function. 2 I w ant to lock- out channel ...

  • Listen Technologies LA-351 - page 115

    109 LA-140 LT-82 Design Guide Design Guide LR-42/44 Programming Examples Example #5 Enter Program Mode. 1 :KHQSURJUDPPRGHLVHQWHUHGWKHÀUVWIXQFWLRQLVDFWLYHDQGWKH/('·VZLOOVKRZ Using the functionality chart on a previous page note that this is the Stereo On/Off Function. 2 I w ant to tighten the squel ...

  • Listen Technologies LA-351 - page 116

    110 LA-140 LT-82 Design Guide Design Guide LR-42/44 If you have Auto-Seek disabled (default setting) the unit scrolls to the next channel with each press of the Select button. If, for example, you have a two channel system you can use this feature to “lock out” the other two unused channels so that the user will not have to scroll through them ...

  • Listen Technologies LA-351 - page 117

    111 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Battery Charging Information The only way to charge the LA-364 battery packs is by inserting them into the LA-350 Charging Station. The battery packs can be charged while installed on the receiver or they can be charged while separate from the receiver. 1B IR 8-Unit Charging/Storage Stati ...

  • Listen Technologies LA-351 - page 118

    112 LA-140 LT-82 Design Guide Design Guide LR-42/44 Place LR-42/LR-44 Receiver into a slot on the LA-350 case. Ensure that the LA-350 charging station has power to it. Place LR-42/LR-44 Rec eiver into a slot When the unit is seated correctly a red LED will light up on the LA-350 charging station adjacent to the charging slot indicating charging has ...

  • Listen Technologies LA-351 - page 119

    113 LA-140 LT-82 Design Guide Design Guide LR-42/44 LR-42/44 Battery Charging Information Place LA-364 battery pack into converted tray of LA-350. Ensure that the LA-350 charging station has power to it. Place LA-364 batter y pack into con verted tray Install Battery Pack Conversion Plates to charging tr ay ,QVWDOO%DWWHU3DFN&RQYHUVLRQ ...

  • Listen Technologies LA-351 - page 120

    114 LA-140 LT-82 Design Guide Design Guide LR-42/44 When the battery pack is fully charged the red LED will turn off and a green LED will light up to indicate battery pack is fully charged. The green LED will stay lit until the battery pack is removed from the charging station. When the battery pack is fully charged the red LED will turn o IMPOR ...

  • Listen Technologies LA-351 - page 121

    115 LA-140 LT-82 Design Guide Design Guide LR-42/44 Accessories for LR-42/44 LA-152 IR Alkaline battery compartment included with receiver LA-364 1,0+5HFKDUJHDEOH%DWWHU3DFN requires LA-350 Charging Station LA-351 8-Unit IR Receiver Storage Station LA-350 8-Unit IR Receiver Charging/Storage Station LA-364 required LA-150 Replacement Lanyar ...

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    116 LA-140 LT-82 Design Guide Design Guide LR-42/44 Notes ...

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    LA-140 LT-82 Design Guide Design Guide LA-350/351 LA-350 Package Contents • LA-350 Charging/Storage Station • LA-204 Power Supply %DWWHU3DFN&RQYHUVLRQ7UDV • Cord Tidy Rack • LA-350 Quick Reference Card /LVWHQ&RQÀJXUDWLRQV • LA-350-01 (North America) /$8. • LA-3 ...

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    123 LA-140 LT-82 Design Guide Design Guide LA-350/351 /$6SHFLÀFDWLRQV Features • Can charge or store up to eight LR-42 and/or LR-44 receivers at one time. (DVWRLGHQWLIFKDUJLQJ*UHHQ/(' IXOOFKDUJHGXQLWV5HG/(' FKDUJLQJLQSURJUHVV • Pockets grab and hold receivers so they will ...

  • Listen Technologies LA-351 - page 130

    124 LA-140 LT-82 Design Guide Design Guide LA-350/351 /$6SHFLÀFDWLRQV • Can store up to eight LR-42 and/or LR-44 receivers at one time. • Pockets grab and hold receivers so they will not fall out. 6WRUDJH6WDWLRQFDQEHPRXQWHGRQDÁDWVXUIDFHRURQDZDOO • Lanyard cords are stored without t ...

  • Listen Technologies LA-351 - page 131

    125 LA-140 LT-82 Design Guide Design Guide LA-350/351 LA-350 Charging Requirements/Instructions 1 Plug po wer supply into pow er source Plug power supply into power source. 2 Plug power into charging/storage station. Plug pow er into charging/storage station Requirements to Charge R eceivers To charge Listen LA-42 or LR-44 IR Receiver batteries you ...

  • Listen Technologies LA-351 - page 132

    126 LA-140 LT-82 Design Guide Design Guide LA-350/351 3A 3 T o Charge Batteries while in R eceivers Charging Scheme 1 Place receivers in charging slots. It may be necessary to press down on the units to ensure that they are touching the charging contacts. Place receiv ers in charging slots 1 23 4 LA-350 Charging Requirements/Instructions T o Charge ...

  • Listen Technologies LA-351 - page 133

    127 LA-140 LT-82 Design Guide Design Guide LA-350/351 Place LA-364 battery packs in converted charging slots. Place LA-364 batter y packs in con verted charging slots 4 Verify batteries are charging. When units begin to charge a red LED will come on near the charging slot. This LED will stay lit until the receivers are fully charged. V erify batter ...

  • Listen Technologies LA-351 - page 134

    128 LA-140 LT-82 Design Guide Design Guide LA-350/351 LA-350/351 Cord Tidy Rack The Cord T idy Rack The Cord Tidy Rack can be used, if desired, to help with organizing the lanyard cords of the LR-44 receiver during charging or storage. Insert the tidy rack into the holes on top of the station to use. 1 23 4 Cord Tidy Rack ...

  • Listen Technologies LA-351 - page 135

    129 LA-140 LT-82 Design Guide Design Guide LA-350/351 Notes ...

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    130 LA-140 LT-82 Design Guide Design Guide LA-350/351 Notes ...

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    LA-140 LT-82 Design Guide Des i gn Gu i de Supplementary Supplementary Information Table of Contents Troubleshooting 133 Frequently Asked Questions 135 C o m p l i a n c e I n f o r m a t i o n 1 3 7 W a r r a n t y 1 3 7 Contacting Listen 137 ...

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    137 LA-140 LT-82 Design Guide Des i gn Gu i de Supplementary Troubleshooting 7URXEOHVKRRWLQJ I believe my radiator has power but none of the LEDs on the front are on.  6:KDVEHHQWXUQHG2))7XUQWKLVVZLWFKWRWKH21SRVLWLRQIRUYHULÀFDWLRQRISRZHUDQGFDUULHU My radiator is not radiating a signa ...

  • Listen Technologies LA-351 - page 144

    138 LA-140 LT-82 Design Guide D es i gn G u id e Supplementary Troubleshooting 7URXEOHVKRRWLQJ I cannot get my receiver to scroll to the channel I want to use. There are two reasons why the receiver would not scroll to the channel you want the unit to be on. 7KHÀUVWLVWKDWWKHXQLWLVLQ´$XWR6HHNµPRGHDQGLVQRW ...

  • Listen Technologies LA-351 - page 145

    139 LA-140 LT-82 Design Guide Des i gn Gu i de Supplementary Frequently Asked Questions Q How many radiators can an LT-82 power? A Up to two radiators can be powered using an LT-82. You must use an external power supply (LA-205) for more radiators. )UHTXHQWO$VNHG4XHVWLRQV Q How many radiators can an LA-205 power? A Up to two radiators can be ...

  • Listen Technologies LA-351 - page 146

    140 LA-140 LT-82 Design Guide D es i gn G u id e Supplementary Frequently Asked Questions Q  ,ZDQWWRRFFDVLRQDOOWXUQRIIRQHRUPRUHFKDQQHOVLQDPXOWLFKDQQHOVVWHPEXW,GRQ·WZDQWWRKDYH to rewire the system every time I do this. Is this possible? A Yes. The transmitter should be placed on ch ...

  • Listen Technologies LA-351 - page 147

    141 LA-140 LT-82 Design Guide Des i gn Gu i de Supplementary Compliance, Warranty and Contact Information &RPSOLDQFH,QIRUPDWLRQ The following compliance information applies to the LT-82, LA-140-GY, LA-140-WH, LR-42, LR-44 and LA-350. 7KLVGHYLFHFRPSOLHVZLWK3DUWRIWKH)&&5XOHV2SHUDWLRQLVVXEMHF ...

  • Listen Technologies LA-351 - page 148

    Listen Technologies Corporation 14912 Heritagecrest Way %OXIIGDOH8WDK86$ +1.801.233.8992 +1.800.330.0891 North America +1.801.233.8995 fax www.listentech.com Printed in the United States of America © 2008 Listen Technologies Corporation ® All Rights Reserved 2008115 ...

Manufacturer Listen Technologies Category Stereo Receiver

Documents that we receive from a manufacturer of a Listen Technologies LA-351 can be divided into several groups. They are, among others:
- Listen Technologies technical drawings
- LA-351 manuals
- Listen Technologies product data sheets
- information booklets
- or energy labels Listen Technologies LA-351
All of them are important, but the most important information from the point of view of use of the device are in the user manual Listen Technologies LA-351.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Listen Technologies LA-351, service manual, brief instructions and user manuals Listen Technologies LA-351. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Listen Technologies LA-351.

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A complete manual for the device Listen Technologies LA-351, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Listen Technologies LA-351 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Listen Technologies LA-351.

A complete Listen Technologies manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Listen Technologies LA-351 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Listen Technologies LA-351, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Listen Technologies LA-351, that we can find in the current document
3. Tips how to use the basic functions of the device Listen Technologies LA-351 - which should help us in our first steps of using Listen Technologies LA-351
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Listen Technologies LA-351
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Listen Technologies LA-351 in a specific country, if it was not possible to solve the problem on our own.

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