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Listen Technologies LR-300 User Manual

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Summary of Contents for Listen Technologies LR-300

  • Page 3 Dear Valued Customer, Thank you for choosing Listen! All of us at Listen are dedicated to providing you with the highest quality products available. We take great pride in their outstanding performance because we care that you are completely satisfi ed. That’s why we independently certify them to the highest quality standards and back them with a limited lifetime guarantee.

  • Page 5: Table Of Contents

    Receivers Table of Contents LR-500 Manual LR-500 Table of Contents LR-400 Manual LR-400 Table of Contents LR-300 Manual LR-300 Table of Contents Supplementary Information Channel Selection Listen SQ™ RF Reception Maximization Strategies 72 MHz Frequency Compatibility Table 216 MHz Frequency Compatibility Table...

  • Page 9: Lr-500 Table Of Contents

    LR-500 Table of Contents Package Contents Architectural Specifi cations Specifi cations Quick Reference Setup Instructions Operation Instructions Programming Instructions Squelch Information Squelch Programming Charging Batteries Wall Transformer Operation...

  • Page 10: Package Contents

    LR-500 Package Contents LR-500 Contents • LR-500 Portable Programmable Display FM Receiver (72 MHz, 216 MHz) Listen Part Number •LR-500-072 (72 MHz) •LR-500-216 (216 MHz)

  • Page 11: Architectural Specifi Cations

    LR-500 Specifi cations Architectural Specifi cations The FM reciever shall be capable of receiving on 57 wide and narrow band channels with a SNR of 80dB or greater. The receiver shall be programmable to electronically lock out unneeded channels. The receiver shall be capable of seeking channels. The device shall have an adjustable squelch. The device shall have an audio frequency response of 63 Hz to 15 KHz, ±...

  • Page 12: Quick Reference

    LR-500 Quick Reference Articulating Flexible Antenna: Place in upright position when in use. Power/Charging Port Channel Select Buttons Front Door Lock RF Receive Indicator: Indicates the RF receive level. PGM: Program function is in process. 3.5 mm Output Jack: Connect a Listen earphone(s) here. LED: When lit, indicates unit has power.

  • Page 13: Setup Instructions

    LR-500 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is apparent, please contact Listen Technologies Corporation technical support for assistance. Open the front access door If locked, use a pocketknife or small screwdriver to unlock the door locks on both sides of the unit.
  • Page 14 LR-500 Setup Instructions Connect an Earphone or Headset Your headset or earphone will connect to the jack on the top of the unit. Either mono or stereo connectors may be used with a Listen receiver. Make certain you push the plug all the way into the jack.

  • Page 15: Operation Instructions

    LR-500 Operation Instructions Make Sure the Unit is On Rotate the volume knob counterclockwise with an earphone or headset connected to the unit. Listen receivers use the cable of the earphone or headset as a receiving antenna. Be careful when turning the unit on - if you turn the knob too far you might get too much volume in your earphone! Select a Channel Select the channel to match the transmission channel by pressing the UP and DOWN buttons on...
  • Page 16 LR-500 Operation Instructions To Lock into Only One Channel Press and hold the SEEK button for 5 seconds to lock a receiver onto the currently tuned channel. Press and hold the button again to unlock. When locked the LED on top of the unit will flash when you press the SEEK button.

  • Page 17: Programming Instructions

    LR-500 Programming Instructions The LR-500 Display Receiver has some special features not available in the other receivers: you may lock out unwanted channels, and you can adjust the squelch in the unit. Locking Out Unwanted Channels For applications where users are required to select a channel (such as language interpretation or classrooms), and you don’t want them to have to go through all 57 available channels to find the appropriate channel, you can lock out all channels except the ones you are using in your facility.

  • Page 18: Squelch Information

    LR-500 Squelch Squelch The purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. The squelch on your receiver can be adjusted so that it will mute the audio on different RF signal strengths.

  • Page 19: Charging Batteries

    LR-500 Charging Batteries The LR-500 and all Listen receivers are unique because they have SmartCharge™ chargers built in. When any of these units are connected to an LA-202 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged. To charge the batteries using the LA-202 wall transformer, plug the transformer into the jack marked “PWR/CHG”...

  • Page 20: Wall Transformer Operation

    LR-500 Wall Transformer Operation The LR-500 will operate normally when connected to a wall transformer. Use Listen part number LA-202, available from any Listen dealer. Connect the wall transformer to the jack on the side of the LR-500 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet.

  • Page 25: Lr-400 Table Of Contents

    LR-400 Table of Contents Package Contents Architectural Specifi cations Specifi cations Quick Reference Setup Instructions Operation Instructions Squelch Information Squelch Programming Charging Batteries Wall Transformer Operation...

  • Page 26: Package Contents

    LR-400 Package Contents LR-400 Contents • LR-400 Portable Display FM Receiver (72 MHz, 216 MHz) Listen Part Number •LR-400-072 (72 MHz) •LR-400-216 (216 MHz)

  • Page 27: Architectural Specifi Cations

    LR-400 Specifi cations Architectural Specifi cations The FM receiver shall be capable of receiving on 57 wide and narrow band channels with a SNR of 80dB or greater. The receiver shall be capable of seeking channels. The device shall have an adjustable squelch.

  • Page 28: Quick Reference

    LR-400 Quick Reference Power/Charging Port Channel Select Buttons Front Door Lock RF Receive Indicator: Indicates the RF receive level. 3.5 mm Output Jack: Connect a Listen earphone(s) here. LED: When lit, indicates unit has power. When batteries are low or charging the LED fl ashes On/Off and Volume Control Dial Look&Listen™...

  • Page 29: Setup Instructions

    LR-400 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is apparent, please contact Listen Technologies Corporation technical support for assistance. Open the front access door If locked, use a pocketknife or small screwdriver to unlock the door locks on both sides of the unit.
  • Page 30 LR-400 Setup Instructions Connect an Earphone or Headset Your headset or earphone will connect to the jack on the top of the unit. Either mono or stereo connectors may be used with a Listen receiver. Make certain you push the plug all the way into the jack.

  • Page 31: Operation Instructions

    LR-400 Operation Instructions Make Sure the Unit is On Rotate the volume knob counterclockwise with an earphone or headset connected to the unit. Listen receivers use the cable of the earphone or headset as a receiving antenna. Be careful when turning the unit on - if you turn the knob too far you might get too much volume in your earphone! Select a Channel Select the channel to match the transmission channel by pressing the UP and DOWN buttons on...
  • Page 32 LR-400 Operation Instructions To Lock into Only One Channel Press and hold the SEEK button for 5 seconds to lock a receiver onto the currently tuned channel. Press and hold the button again to unlock. When locked the LED on top of the unit will flash when you press the SEEK button.

  • Page 33: Squelch Information

    LR-400 Squelch Squelch The purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. The squelch on your receiver can be adjusted so that it will mute the audio on different RF signal strengths.

  • Page 34: Charging Batteries

    LR-400 Charging Batteries The LR-400 and all Listen receivers are unique because they have SmartCharge™ chargers built in. When any of these units are connected to an LA-202 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged. To charge the batteries using the LA-202 wall transformer, plug the transformer into the jack marked “PWR/CHG”...

  • Page 35: Wall Transformer Operation

    LR-400 Wall Transformer Operation The LR-400 will operate normally when connected to a wall transformer. Use Listen part number LA-202, available from any Listen dealer. Connect the wall transformer to the jack on the side of the LR-400 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet.

  • Page 39: Lr-300 Table Of Contents

    LR-300 Table of Contents Package Contents Architectural Specifi cations Specifi cations Quick Reference Setup Instructions Operation Instructions Charging Batteries Wall Transformer Operation...

  • Page 40: Package Contents

    LR-300 Package Contents LR-400 Contents • LR-300 Portable Digital FM Receiver(72 MHz or 216 MHz) Listen Part Number •LR-300-072 (72 MHz)

  • Page 41: Architectural Specifi Cations

    The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The Listen LR-300 is specified. Specifi cations Specifi...

  • Page 42: Quick Reference

    LR-300 Quick Reference Power/Charging Port Front Door Lock 3.5 mm Output Jack: Connect a Listen earphone(s) here. LED: When lit, indicates unit has power. When batteries are low or charging the LED fl ashes On/Off and Volume Control Dial SEEK Button: Allows the user to search for or lock onto an active channel.

  • Page 43: Setup Instructions

    LR-300 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is apparent, please contact Listen Technologies Corporation technical support for assistance. Open the front access door If locked, use a pocketknife or small screwdriver to unlock the door locks on both sides of the unit.
  • Page 44 LR-300 Setup Instructions Connect an Earphone or Headset Your headset or earphone will connect to the jack on the top of the unit. Either mono or stereo connectors may be used with a Listen receiver. Make certain you push the plug all the way into the jack.

  • Page 45: Operation Instructions

    Find an audio transmission using SEEK Another way to find a channel on the LR-300 is to use the SEEK button. When you do this, the Listen receiver looks for the next active channel. Sometimes the unit will mistake interference for a real broadcast signal.

  • Page 46: Charging Batteries

    13-hour charge cycle over again. When not using the LR-300, it is recommended to leave the unit on the charger. The charger provides a “maintenance” charge that keeps the battery at 100%. If the unit is not on the charger, the battery will lose up to 20% of its charge per month.

  • Page 47: Wall Transformer Operation

    LR-300 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet. You do not need to have batteries installed in the LR-300 to operate it with a wall transformer. NOTE: If batteries are in the unit ensure that the battery selection switch is set properly as shown on page 39.

  • Page 48: Channel Selection

    13, it is recommended that you switch to a 72 MHz system. NOTE: The LR-300-072 can only be used with the 17 wide band 72 MHz channels, if you are using the LR-300 choose only lettered wide band frequencies on your transmitter.

  • Page 49: Listen Sq

    Listen SQ™ We are accustomed to listening to low noise, high fidelity audio (delivered via CD, DVD, etc.). FM radio systems, such as those made by Listen, have more inherent noise compared to most sound systems. To reduce noise of our systems, Listen now offers a noise reduction technology called Listen SQ™.

  • Page 50: Rf Reception Maximization Strategies

    RF Reception Maximization Strategies For proper and dependable operation, Listen receivers should receive a strong and consistent signal from the originating transmitter. The following strategies should be used to maximize this signal: a. When designing and installing your system, keep in mind that the location of both the transmitter and receivers is critical to maximizing signal strength.
  • Page 51 72 MHz Compatibility Chart Frequency Phonak Phonic Listen Microfield Comtek Williams* Gentner 72.0250 (11, 1) 72.0500 72.0750 (12, 3) 72.1000 A, (13, 4) 72.1250 (14, 5) 72.1500 72.1750 (15, 7) 72.2000 K, (8) 72.2250 (16, 9) 72.2500 (10) 72.2750 (17, 11) 72.3000 B, (18, 12) 72.3250...
  • Page 52 216 MHz Compatibility Chart Frequency Phonak Listen Microfield Comtek Williams Gentner 216.0125 216.0250 216.0375 216.0625 216.0750 216.0875 216.1125 216.1250 216.1375 216.1625 216.1750 216.1875 216.2125 216.2250 216.2375 216.2625 216.2750 216.2875 216.3125 216.3250 216.3375 216.3625 216.3750 216.3875 216.4125 216.4250 216.4375 216.5125 216.5250 Frequency Phonak Listen...

  • Page 53: Troubleshooting

    My LR-300 sounds distorted or there is no audio. Because the LR-300 has no LCD display, it is important to recognize when the unit is locked on a channel. If the unit sounds distorted or there is no audio heard and pressing the seek button does not correct the problem, the unit is probably locked on the wrong channel.

  • Page 54: Troubleshooting

    SEEK button for 5 seconds. When the channel is locked, the padlock icon will appear on the LR-400 and LR-500 displays. On the LR-300, the LED will flash when the channel is locked and seek is pressed. In addition, you can lock the access doors to the units.

  • Page 55: Compliance Notice And Fcc Statement

    Compliance Notice and FCC Statement This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) These devices may not cause harmful interference, and (2) these devices must accept any interference received, including interference that may cause undesirable operation. This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC Rules.

  • Page 56: Warranty & Contacting Listen

    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.

  • Page 57: Optional Accessories

    Optional Accessories LA 164 LA-164 Ear Speaker LA-165 Stereo Headphones LA-265 Consumer Camcorder Cable Earphone Options LA-161 Single Ear Bud LA-166 LA-166 Neck Loop Stereo Headphones Connector Options LA-266 Professional Camcorder Cable LA-162 Stereo Ear Buds LA-170 LA-170 Behind-the-Head LA-275 Sacrificial Cable...
  • Page 58 Notes...
  • Page 59 Notes...
  • Page 60 Listen Technologies Corporation 14912 Heritagecrest Way Bluffdale, Utah 84065-4818, U.S.A. +1.801.233.8992 +1.800.330.0891 North America +1.801.233.8995 www.listentech.com © 2008 Listen Technologies Corporation ® All Rights Reserved 081208...

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Lr-500Lr-400

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