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The radiator-emitter shall have a single carrier transmitting area of no less than 10,000 ft2 (929

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The radiator shall be powered via CAT-5 cabling and the RF from the transmitter shall be carried 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 color and shall include all of the mounting hardware capable of mounting the radiator on a wall, on a ceiling, in a corner, on a desk, on a mic stand, or on a tripod. The Listen

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		Specifications			LA-140


	Frequency Range				1 MHz - 5 Mhz

	Input				BNC Connection. -25dbm to -5dbm input nominal
RF	Output				BNC Connection. -15 dbm nominal

	Compliance				FCC Part 15, Industry Canada, CE, RoHS
	Coverage Area				10,000 ft2 (929 m2) when used with Listen Receivers

Controls	User Controls				Termination Switch, Delay Compensation Switch, Indicator LEDs on/off,
Controls	User Controls				compatibility switch.
					compatibility switch.


	Red LED				Indicates power is present
Indicators	Yellow LED				Indicates no connection to transmitter or radiator

	Green LED				Indicates carrier and power are present and radiator is emitting IR signal


	Input				RJ-45 connector. 30VDC, powered from transmitter via CAT-5 cable or op-
	Input				tional LA-205 power supply.
					tional LA-205 power supply.
					RJ-45 connector. 30VDC, powers up to one additional radiator. (Maximum
Power	Output				(two) 2 radiators powered from each LT-82 transmitter or LA-205 power sup-
	Output				ply)
					ply)

	Emitter Power				3 Watts

	Dimensions (H x W x D)				5.50 x 8.00 x 2.60 in. (140 x 203 x 66 mm)

	Color				LA-140-GY (Grey), LA-140-WH (White)

	Unit Weight				2.1 lbs (.95 kg)
Physical
Physical	Unit Weight with Wall/ Ceiling				2.35 lbs (1.05 kg)
	Unit Weight with Wall/ Ceiling				2.35 lbs (1.05 kg)
	Mounting
	hardware

	Shipping Weight				4.0 lbs. (1.8 kg)

	Temperature - Operation				-10 C (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

		•Specifications		are subject to change without notification.

LALA--Design140140Guide

LTDesign-82Guide

53

Image 59

Listen Technologies LT-82LA, LR-42, LR-44, LA-351, LA-350 manual $6SHFLÀFDWLRQV

Contents

Page Page VHUYLFHZH·UHKHUHWROLVWHQ +HUH·VKRZWRUHDFKXV Page Stationary Infrared Table of Contents Page Page Page Stationary Infrared Design Guide Table of Contents Design Guide Infrared Technology Overview Single Channel System System Overview Multi-channel system Multiple Channel System Maximum length of coaxial RF cable Each LT-82 transmitter used can power two LA-140 radiatorsMaximum length of CAT-5 power cable Key Concepts of Designing a Stationary IR System Complete the room layout worksheet Designing a SystemDetermine the number of audio channels Determine the room size and shape Single Channel System Horizontal Polar PatternVertical Polar Pattern Designing a System Designing a System 3C Radiator Mounting Angle 3B Height of Radiators Determine the number of radiators required Complete the system layout worksheet 5G Determine the delay compensation for each radiator 5D Draw a connecting line from the power supply output5E Cross out the unused power supplies 5F Write in the CAT-5 power supply cable lengths 6C Radiators Complete the system materials worksheet6A Transmitters 6B Transmitter Rack Mounting Dual radiator mounting 6E Radiator Power Supplies6H Other Accessories 6D Radiator Mounting Options DesignDesign GuideGuide Page Room Layout Worksheet Page System Layout Worksheet Page DesignDesignLA-140GuideGuide DesignLT-82Guide Page USA System Materials WorksheetPage Page Page Page Page LT-82 Package Contents LT-82 User’s Manual Table of ContentsPage 6SHFLÀFDWLRQV Power LT-82 Block Diagram 7UDQVPLW/HYHO,QGLFDWRU6KRZVPLHGDXGLROHYHO LT-82 Quick Reference Mount LT-82s in Rack if desired LT-82 Setup and Operating InstructionsConnect LT-82 RF Signal to Radiators Unpack the Product 6B Press the Power button Connect LT-82 Power to Radiatorsif desiredPowering the LT-82 7A Select the operating channel 7B RF-Off Channel Setting InformationSelect Operating Channel 8C Test Tone if necessary 8A If using Input8B If using Input Connect Audio Inputs Set Auto-Timeout Feature Set Stereo and Process Features $FFHVVRULHV Accessories for LT-82 DesignLT-82Guide DesignLTLT-82-82Guide DesignLT-82Guide Page Page Page Page LA-140 Package Contents LA-140 User’s Manual Table of ContentsPage $6SHFLÀFDWLRQV DUULHU3UHVHQW*UHHQ LA-140 Quick Reference Mount Radiator LA-140 Setup and Operating InstructionsConnect RF Signal Connect Power Set LED Indicator Shutoff Switch SW1 Set Delay Compensation SwitchSet Termination Switch 9B Yellow LED Set Compatibility Switch SW2Front LED Indicators 9A Red LED Mounting Hardware Pieces LA-140 Mounting your RadiatorOverview Attach Tilt Arm a Installation StepsWall Box Mounting Screw Wall Box Plate to wall Attach Radiator to Wall Box Plate Attach Safety Mounting CablePull CAT-5 and Coaxial cables through if necessary Determine correct angle Fasten Wall Box Plate to wall Hollow Wall Mounting 3XOO&$7DQG&RDLDOFDEOHVWKURXJKKROHLQDOO%R3ODWH Attach Safety Mounting Cable ‡&RUQHU0RXQW%UDFNHW Corner Mounting Attach Corner Mount Bracket Attach Radiator to Corner Mount Bracket Pull CAT-5 and Coaxial cables through Attach Safety Mounting Cable Attach Wall Box Plate securely to ceiling Ceiling Mounting Attach Tilt Arm a Attach Safety Mounting Cable Desk/Table Mounting DesignLALALT---140140Guide82 Attach Radiator to Desk/Mic Stand Attach Universal Bracket to Mic Stand Microphone Stand Mounting Determine correct angle setting Attach Universal Bracket to tripod stand Tripod Stand Mounting Attach Tilt Arm B Dual Radiator Mounting LA-205 LA-342 Accessories for LA-140 DesignLALA--140140Guide DesignLT-82Guide DesignLALA--140140Guide DesignLT-Guide82 Page Page Page Page Listen Part Number LR-42/44 User’s Manual Table of ContentsLR-42/44 Package Contents Page ,56WHWKRVFRSH5HFHLYHU6SHFLÀFDWLRQV /DQ\DUG,55HFHLYHU6SHFLÀFDWLRQV LR-42 Quick Reference Press to turn unit on, press and hold to turn unit off LR-44 Quick Reference Determine Battery Type to be Used LR-42/44 Setup Instructions Place LA-364 battery pack in receiver Turn Unit On Connect an Earphone or Headset LR-44 model only Select a Channel and/or Program Channel Selection Method Select Stereo/Mono ModeSetup Additional Programming if desired Position the Unit on User’s Body LR-42/44 Operating Instructions LR-44 LR-42 Turn the Unit On 3A Auto-Seek Disabled Default OFF3B Auto-Seek Enabled Select Listening Channel LED Sleep Mode5A Auto-Seek Disabled Default OFF 5B Auto-Seek Enabled 7A Checking Battery Level Adjust Volume LevelChecking Battery Level and Current Channel After 10 seconds Auto Shut-Off FeaturePowering down the unit 7B Checking Current Channel LR-42/44 Locking Instructions Channel Lock ProcedureChannel Unlock Procedure Lock Indicators LR-42/44 Programming Instructions Program Mode OverviewEntering Program Mode While in Program Mode 1DYLJDWLQJZLWKLQWKH3URJUDP0RGH Program Mode Functionality Diagram While in Channel Lock-Out Sub-Mode Channel Lock-Out Sub-Mode Functionality DiagramChannel Lock-Out Sub-Mode Instructions Squelch Adjustment Sub-Mode Functionality Diagram Squelch Adjustment Sub-Mode InstructionsWhile in Squelch Adjustment Sub-Mode There are two ways to exit the program mode Resetting to DefaultsExiting Program Mode Example #2 Programming ExamplesExample #1 Example #4 Want to reset the unit to factory defaultsExample #3 Example #5 Want to tighten the squelch setting to setting Auto-Seek Default is Off Programmable Features Detailed DescriptionsStereo Mode Default is OFF Channel Lock-Out Default is All Channels Available Requirements LR-42/44 Battery Charging InformationHow to Charge Batteries 1A NiMH Battery Pack LA-364 Place LR-42/LR-44 Receiver into a slot When the unit is seated correctly a red LED will lightWhen the receiver is fully charged the green LED will light Place LA-364 battery pack into converted tray 114 LA-364 Accessories for LR-42/44 116 Page Page Page Page LA-351 Package Contents LA-350/351 User’s Manual Table of ContentsLA-350 Package Contents Page $6SHFLÀFDWLRQV $6SHFLÀFDWLRQV Charging Instructions LA-350 Charging Requirements/InstructionsRequirements to Charge Receivers 3B To Charge Batteries separate from Receivers Install conversion trayCharging Scheme 3A To Charge Batteries while in Receivers Verify full charge Place LA-364 battery packs in converted charging slotsVerify batteries are charging Cord Tidy Rack LA-350/351 Cord Tidy Rack 129 130 Page Page Page Page Supplementary Information Table of Contents Page 7URXEOHVKRRWLQJ Troubleshooting SupplementaryDesignLALT--14082Guide UHTXHQWO\$VNHG4XHVWLRQV Frequently Asked Questions \UHFKDUJHDEOHEDWWHULHVGRQ·WODVWYHU\ORQJK\ RPSOLDQFH,QIRUPDWLRQ Compliance, Warranty and Contact Information Listen Technologies Corporation 14912 Heritagecrest Way