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Listen Technologies
LR-44, LR-42, LA-351, LA-350
manual
DesignDesignLA-140GuideGuide DesignLT-82Guide
Models:
LT-82LA
LA-350
LA-351
LR-44
LR-42
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31
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148 pages
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Troubleshooting
Install
FAQ
LT-82 Block Diagram
Connect RF Signal
Stereo Mode Default is OFF
Cable Delay CD
Front LED Indicators
Resetting to Defaults
6H Other Accessories
Page 31
Image 31
Design
Design
LA-140
Guide
Guide
DesignLT-82Guide
25
Page 30
Page 32
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Contents
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Page
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Page
Stationary Infrared Table of Contents
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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 radiators
Maximum length of CAT-5 power cable
Key Concepts of Designing a Stationary IR System
Complete the room layout worksheet
Designing a System
Determine the number of audio channels
Determine the room size and shape
Vertical Polar Pattern
Horizontal Polar Pattern
Single Channel System
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 output
5E Cross out the unused power supplies
5F Write in the CAT-5 power supply cable lengths
6C Radiators
Complete the system materials worksheet
6A Transmitters
6B Transmitter Rack Mounting
Dual radiator mounting
6E Radiator Power Supplies
6H Other Accessories
6D Radiator Mounting Options
DesignDesign GuideGuide
Page
Room Layout Worksheet
Page
System Layout Worksheet
Page
DesignDesignLA-140GuideGuide DesignLT-82Guide
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System Materials Worksheet
Page
Page
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LT-82 Package Contents
LT-82 User’s Manual Table of Contents
Page
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Power
LT-82 Block Diagram
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LT-82 Quick Reference
Mount LT-82s in Rack if desired
LT-82 Setup and Operating Instructions
Connect LT-82 RF Signal to Radiators
Unpack the Product
Powering the LT-82
Connect LT-82 Power to Radiatorsif desired
6B Press the Power button
Select Operating Channel
7B RF-Off Channel Setting Information
7A Select the operating channel
8C Test Tone if necessary
8A If using Input
8B If using Input
Connect Audio Inputs
Set Auto-Timeout Feature
Set Stereo and Process Features
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Accessories for LT-82
DesignLT-82Guide
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DesignLT-82Guide
Page
Page
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LA-140 Package Contents
LA-140 User’s Manual Table of Contents
Page
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LA-140 Quick Reference
Mount Radiator
LA-140 Setup and Operating Instructions
Connect RF Signal
Connect Power
Set Termination Switch
Set Delay Compensation Switch
Set LED Indicator Shutoff Switch SW1
9B Yellow LED
Set Compatibility Switch SW2
Front LED Indicators
9A Red LED
Overview
LA-140 Mounting your Radiator
Mounting Hardware Pieces
Attach Tilt Arm a
Installation Steps
Wall Box Mounting
Screw Wall Box Plate to wall
Attach Radiator to Wall Box Plate
Attach Safety Mounting Cable
Pull CAT-5 and Coaxial cables through if necessary
Determine correct angle
Fasten Wall Box Plate to wall
Hollow Wall Mounting
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Attach Safety Mounting Cable
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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
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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
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LR-42/44 Package Contents
LR-42/44 User’s Manual Table of Contents
Listen Part Number
Page
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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
Setup Additional Programming if desired
Select Stereo/Mono Mode
Select a Channel and/or Program Channel Selection Method
Position the Unit on User’s Body
LR-42/44 Operating Instructions
LR-44
LR-42
3B Auto-Seek Enabled
3A Auto-Seek Disabled Default OFF
Turn the Unit On
Select Listening Channel
LED Sleep Mode
5A Auto-Seek Disabled Default OFF
5B Auto-Seek Enabled
Checking Battery Level and Current Channel
Adjust Volume Level
7A Checking Battery Level
After 10 seconds
Auto Shut-Off Feature
Powering down the unit
7B Checking Current Channel
LR-42/44 Locking Instructions
Channel Lock Procedure
Channel Unlock Procedure
Lock Indicators
LR-42/44 Programming Instructions
Program Mode Overview
Entering Program Mode
While in Program Mode
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Program Mode Functionality Diagram
Channel Lock-Out Sub-Mode Instructions
Channel Lock-Out Sub-Mode Functionality Diagram
While in Channel Lock-Out Sub-Mode
While in Squelch Adjustment Sub-Mode
Squelch Adjustment Sub-Mode Instructions
Squelch Adjustment Sub-Mode Functionality Diagram
Exiting Program Mode
Resetting to Defaults
There are two ways to exit the program mode
Example #1
Programming Examples
Example #2
Example #3
Want to reset the unit to factory defaults
Example #4
Example #5
Want to tighten the squelch setting to setting
Auto-Seek Default is Off
Programmable Features Detailed Descriptions
Stereo Mode Default is OFF
Channel Lock-Out Default is All Channels Available
Requirements
LR-42/44 Battery Charging Information
How to Charge Batteries
1A NiMH Battery Pack LA-364
When the receiver is fully charged the green LED will light
When the unit is seated correctly a red LED will light
Place LR-42/LR-44 Receiver into a slot
Place LA-364 battery pack into converted tray
114
LA-364
Accessories for LR-42/44
116
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LA-350 Package Contents
LA-350/351 User’s Manual Table of Contents
LA-351 Package Contents
Page
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Requirements to Charge Receivers
LA-350 Charging Requirements/Instructions
Charging Instructions
3B To Charge Batteries separate from Receivers
Install conversion tray
Charging Scheme
3A To Charge Batteries while in Receivers
Verify batteries are charging
Place LA-364 battery packs in converted charging slots
Verify full charge
Cord Tidy Rack
LA-350/351 Cord Tidy Rack
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Supplementary Information Table of Contents
Page
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Troubleshooting
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Frequently Asked Questions
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Compliance, Warranty and Contact Information
Listen Technologies Corporation 14912 Heritagecrest Way
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