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User's Manual
LR-500 Programmable Display Receiver
LR-400 Display Receiver
LR-300 Receiver
Listen Technologies Corporation
D o n ' t m i s s a s i n g l e s o u n d . L i s t e n .
8535 South 700 West, Suite A
Sandy, Utah 84070-2515 USA
Telephone: +1.801.233.8992
Toll Free (North America): 1.800.330.0891
Fax: +1.801.233.8995
E-mail: info@ListenTech.com
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Summary of Contents for Listen Technologies LR-300
- Page 1 D o n ’ t m i s s a s i n g l e s o u n d . L i s t e n . 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.com Listen ® and the Listen logo are registered trademarks of Listen Technologies Corporation...
- Page 2 Toll Free (North America): 1.800.330.0891 E-Mail: support@listentech.com Web: www.ListenTech.com Thank you... and enjoy your listening experience! Best regards, The Listen Team Listen™ and the Listen Logo are registered trademarks of Listen Technologies Corporation. Receivers_2004_06_08 © 2004 Listen Technologies Corporation. All Rights Reserved.
- Page 3 LR-300 User’s Manual ........
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- Page 5 LR-500 Programmable Display Receiver D o n ’ t m i s s a s i n g l e s o u n d . L i s t e n . Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992...
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Page 6: Optional Accessories
LR-500 Package Contents · LR-500 (72MHz or 216MHz) · Warranty Card · Receiver User Manual Optional Accessories See pages 70-71. Listen Part Number 72 MHz: LR-500-072 216 MHz: LR-500-216... -
Page 7: Table Of Contents
LR-500 Table of Contents Architectural Specifications ..........6 Specifications . -
Page 8: Architectural Specifications
LR-500 Specifications Architectural Specifications 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 programmable to electronically lock out unneeded channels. The receiver shall be capable of seek- ing channels. - Page 9 LR-500 Specifications continued Specification Set Up Controls User Controls Controls Programming LCD Display Indicators Battery Type Battery Life (Listen batteries) Battery Charging (NiMH only) Power Power Supply Connector Compliance Dimensions Unit Weight Unit Weight with batteries Physical Shipping Weight Door Temperature - Operation Environmental Temperature - Storage...
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Page 10: Quick Reference
Quick Reference LR-500 Front 3.5mm Input Jack A Listen earpiece or headset connects here. Look & Listen™ display shows receive level, channel, battery status, PROGRAM mode, whether a channel is locked, and whether a channel is locked out from selection (PROGRAM mode). See close- up on page 10. - Page 11 Quick Reference LR-500 Inside Access Door SQ Switch Battery Select Switch Battery Select Switch - place in NiMH position ONLY if you are using Nickel Metal Hydride batteries, otherwise, leave it in the Alkaline position. SQ Switch: shipped in the ON position, use a screwdriver or pen to slide to the OFF position if needed.
- Page 12 Quick Reference LR-500 Look & Listen™ Display Dots indicate the relative RF signal strength. Indicates the unit is in PROGRAM mode. To enter PROGRAM mode, press and hold the UP and DOWN keys until the PGM icon appears in the display. To exit PROGRAM mode let unit sit idle for 5 seconds.
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Page 13: Select Battery Type
LR-500 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is aparent, please contact Listen Technologies Corporation technical sup- port for assistance. See page 69 for contact information. 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 Set SQ switch The SQ switch is inside the battery compartment next to the Battery Select switch. The unit is shipped with SQ in the ON position. To turn it off, use a small screwdriver or pen to slide the switch to the OFF position (to the right).
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Page 15: Select Channels
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 16: 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 vol- ume in your earphone! Select a Channel Select the channel to match the transmission channel by pressing the UP and DOWN buttons... - Page 17 LR-500 Operation Instructions Find an audio transmission using SEEK Another way to find a channel on the LR-500 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.
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Page 18: 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 19: Squelch Information
LR-500 Squelch Squelch The purpose of squelch is to mute the audio output of your receiver when the signal from the trans- mitter is turned off or is too weak to be received. Without squelch you would hear radio noise in your earphone. -
Page 20: Squelch Programming
Squelch Programming Instructions Squelch Programming To enter Squelch programming mode · Turn the unit off · Press and hold the seek button; while still holding seek turn the ON/OFF dial to turn the unit on. · Release the seek button when the Listen name disappears and a two digit display is seen. To adjust the Squelch level ·... -
Page 21: 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 trans- former into the jack marked “PWR/CHG”... - Page 22 LR-500 Charging Batteries continued During the charge cycle, the red LED on top of the Listen product will flash slowly. When charging is completed, the LED will turn off. It is not necessary to unplug the charger; howev- er, if you unplug the unit from the charger and then plug it back in, it will begin the 13-hour charge cycle over again.
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Page 23: 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. You do not need to have batteries installed in the LR-500 to operate it with a wall transformer. - Page 24 this page intentionally left blank...
- Page 25 LR-400 Display Receiver D o n ’ t m i s s a s i n g l e s o u n d . L i s t e n . Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992...
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Page 26: Optional Accessories
LR-400 Package Contents · LR-400 (72MHz or 216MHz) · Warranty Card · Receiver User Manual Optional Accessories See pages 70-71. Listen Part Number 72 MHz: LR-400-072 216 MHz: LR-400-216... -
Page 27: Lr-400 Table Of Contents
LR-400 Table of Contents Architectural Specifications ..........26 Specifications . -
Page 28: Architectural Specifications
LR-400 Specifications Architectural Specifications 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. The device shall have an audio frequency response of 63Hz to 15KHz, ±... - Page 29 LR-400 Specifications continued Specification Set Up Controls User Controls Controls Programming LCD Display Indicators Battery Type Battery Life (Listen batteries) Battery Charging (NiMH only) Power Power Supply Connector Compliance Dimensions Unit Weight Physical Unit Weight with batteries Shipping Weight Door Temperature - Operation Environmental Temperature - Storage...
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Page 30: Quick Reference
Quick Reference LR-400 Front LED - when lit, indicates unit has power. 3.5mm Input Jack A Listen earpiece or headset connects here. Look & Listen™ Display shows receive level, channel, battery status, and whether a channel is locked. See close-up on page LR-400 Top of Unit LED indicators ·... - Page 31 Quick Reference LR-400 Inside Access Door Use UP and DOWN buttons to select a channel. Battery Select Switch Battery Select Switch - place in NiMH position ONLY if you are using Nickel Metal Hydride batteries, otherwise, leave it in the Alkaline position. SQ Switch: shipped in the ON position, use a screwdriver or pen to slide to the OFF position if needed.
- Page 32 Quick Reference LR-400 Look & Listen™ Display Dots indicate the relative RF signal strength. When there is a full signal the unit will display all 8 dots. When the padlock is visible, the channel is locked. Press and hold SEEK for 5 seconds to unlock or lock.
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Page 33: Select Battery Type
LR-400 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is aparent, please contact Listen Technologies Corporation technical support for assistance. See page 69 for contact information. 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 34 LR-400 Setup Instructions Set SQ switch The SQ switch is inside the battery compartment next to the Battery Select switch. The unit is shipped with SQ in the ON position. To turn it off, use a small screwdriver or pen to slide the switch to the OFF position (to the right).
- Page 35 LR-400 Setup Instructions Turn the Unit On Receivers are turned on by rotating the volume dial counterclockwise. The red LED on top of the unit should activate and the LCD display should illuminate. If they do not, make sure you have installed the batteries correctly and that you are using fully charged batteries.
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Page 36: 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 vol- ume in your earphone! Select a Channel Select the channel to match the transmission channel by pressing the UP and DOWN buttons... - Page 37 LR-400 Operation Instructions continued Find an audio transmission using SEEK Another way to find a channel on the LR-400 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.
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Page 38: 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 39: Squelch Programming
Squelch Programming Instructions Squelch Programming To enter Squelch programming mode · Turn the unit off · Press and hold the seek button; while still holding seek turn the ON/OFF dial to turn the unit on. · Release the seek button when the Listen name disappears and a two digit display is seen. To adjust the Squelch level ·... -
Page 40: 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 trans- former into the jack marked “PWR/CHG”... - Page 41 LR-400 Charging Batteries continued During the charge cycle, the red LED on top of the Listen product will flash slowly. When charg- ing is completed, the LED will turn off. It is not necessary to unplug the charger; however, if you unplug the unit from the charger and then plug it back in, it will begin the 13-hour charge cycle over again.
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Page 42: 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. You do not need to have batteries installed in the LR-400 to operate it with a wall transformer. - Page 43 User’s Manual LR-300 Receiver D o n ’ t m i s s a s i n g l e s o u n d . L i s t e n . Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992...
- Page 44 LR-300 Package Contents · LR-300-072 (72MHz) · Warranty Card · Receiver User Manual Optional Accessories See pages 70-71. Listen Part Number 72 MHz: LR-300-072...
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Page 45: Lr-300 Table Of Contents
LR-300 Table of Contents Architectural Specifications ..........44 Specifications . -
Page 46: Architectural Specifications
63Hz to 15KHz, ± 3dB at 72MHz. The device shall incorporate a stereo headset jack that allows the user to plug in either a mono or stereo headset and listen to audio normally. The receiver shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The Listen LR-300 is specified. Specifications... - Page 47 LR-300 Specifications continued Specification LR-300-072 Red, illuminates when unit is on. Flashes when batteries are Indicators low. Flashes when charging. Flashes when locked and user attempts to seek to another channel. Battery Type Two AA batteries, alkaline or NiMH Battery Life (Listen batteries)
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Page 48: Quick Reference
Quick Reference LR-300 Front 3.5mm Input Jack A Listen earpiece or headset connects here. LED - when lit, indicates ON/OFF & VOLUME CONTROL dial unit has power. - Page 49 Quick Reference LR-300 Inside Access Door Battery Select Switch Battery Select Switch - place in NiMH position ONLY if you are using Nickel Metal Hydride batteries, otherwise, leave it in the Alkaline position. SQ Switch: shipped in the ON position, use a screwdriver or pen to slide to the OFF position if needed.
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Page 50: Setup Instructions
LR-300 Setup Instructions Remove the product Remove outer packaging and plastic cover. Inspect for physical damage. If damage is aparent, please contact Listen Technologies Corporation technical sup- port for assistance. See page 69 for contact information. 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 51 LR-300 Setup Instructions continued Place Batteries in Unit Place two AA batteries in the compartment, making note of the battery polarity shown in the battery compartment, and again verifying that the BATTERY SELECT switch is in the correct position for the batteries you are using. (ALK should be selected for all battery types other than NiMH).
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Page 52: Operation Instructions
Find an audio transmission using SEEK To find a channel on the LR-300 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 53 SEEK button. Is the Channel Locked on My Receiver? On the LR-300, when the channel is locked the red LED on the top of the unit will flash when you press the SEEK button.
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Page 54: Charging Batteries
LR-300 Charging Batteries The LR-300 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. - Page 55 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.
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Page 56: Wall Transformer Operation
LR-300 Wall Transformer Operation The LR-300 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-300 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet. -
Page 57: Supplementary Information
Supplementary Information Channel Selection ............56 Listen SQ™... -
Page 58: Channel Selection
Channel Selection It is highly recommended that after channel selection has been achieved, you lock the channel so that it cannot be changed by the user. To accomplish lock on receivers, press and hold seek for 5 seconds. Repeat the process to unlock. It is important to choose channels that are free from inter- ference to achieve proper operation of your Listen equipment. - Page 59 216MHz band due to channel 13, it is recommended that you switch to a 72MHz system. NOTE: The LR-300-072 can only be used with the 17 wide band 72MHz channels, if you are using the LR-300 choose only lettered wide band frequencies on your transmitter.
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Page 60: 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 sys- tems, Listen now offers a noise reduction technology called ListenSQ™. -
Page 61: 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 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 62: 72 Mhz Frequency Compatibility Table
72MHz Compatibility Chart Updated 03.16.04 Frequency Phonic Listen 72.0250 72.0500 72.0750 72.1000 72.1250 72.1500 72.1750 72.2000 72.2250 72.2500 72.2750 72.3000 72.3250 72.3500 72.3750 72.4000 72.4250 72.4500 72.4750 72.5000 72.5250 72.5500 72.5750 72.6000 72.6250 72.6500 72.6750 72.7000 72.7250 Comtek Phonak Williams* Gentner (11, 1) (12, 3) - Page 63 72MHz Compatibility Chart continued Frequency Phonic Listen Comtek Phonak 75.5000 75.5250 75.5500 75.5750 75.6000 75.6250 75.6500 75.6750 75.7000 75.7250 75.7500 75.7750 75.8000 75.8250 75.8500 75.8750 75.9000 75.9250 75.9500 75.9750 Williams* Gentner Telex Drake F, (48, 58) 75.5 (49, 59) (60) (50, 61) S, (62) 75.6...
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Page 64: 216 Mhz Frequency Compatibility Table
216MHz Compatibility Chart Updated 03.16.04 Frequency Phonic Listen 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 Comtek Phonak Williams Gentner Light Speed *Parenthesis indicate T35... - Page 65 216MHz Compatibility Chart continued Frequency Phonic Listen Comtek 216.5125 216.5250 216.5375 216.5625 216.5750 216.5875 216.6125 216.6250 216.6375 216.6625 216.6750 216.6875 216.7125 216.7250 216.7375 216.7625 216.7750 216.7875 216.8125 216.8250 216.8375 216.8625 216.8750 216.8875 216.9125 216.9250 216.9375 216.9625 216.9750 216.9875 Phonak Williams Gentner Light Speed *Parenthesis indicate T35...
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Page 66: Troubleshooting
Make sure the earphone connector is pushed all the way into the jack on top of the unit. If you’re using the LR-300, re-scan the channels to find the clearest channel (see page 50). Make sure the SQ switch on your transmitter and receivers is turned ON (or OFF, if some of your equipment is not SQ capable). - Page 67 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 68 Receiver Troubleshooting continued I cannot change channels when pressing the UP and DOWN buttons or the SEEK button. The unit is locked. Press the SEEK button for 5 seconds to unlock. When I change channels, only certain channels are accessible. The unit has been programmed to tune to only certain channels (LR-500 only).
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Page 69: Compliance Notice
Compliance Notice 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. -
Page 70: Fcc Statement
FCC Statement 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. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. -
Page 71: Warranty
Warranty Listen Technologies Corporation (Listen) warrants its receivers (LR-300, LR-400, LR-500) 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. All other products and accessories are warranted for ninety days from date of purchase. -
Page 72: Optional Accessories
Optional Accessories Earphone Options Ear Speaker LA-164 Stereo Headset LA-165 Ear Speaker Dual Ear Speaker LA-161 LA-162 Neckloop LA-166... - Page 73 Optional Accessories Connector Options Professional Consumer Sacrificial Cable Camcorder Cable Camcorder Cable LA-275 LA-266 LA-265...
- Page 76 Listen Technologies Corporation 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA Telephone: +1.801.233.8992 Toll Free (North America): 1.800.330.0891 Fax: +1.801.233.8995 E-mail: info@ListenTech.com...
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