Listen LT-800 User Manual
Stationary transmitter
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User's Manual
LT-800 Stationary Transmitter
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
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
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Table of Contents
Related Manuals for Listen LT-800
Summary of Contents for Listen LT-800
- 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 . 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 Listen ® and the Listen logo are registered trademarks of Listen Technologies Corporation...
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Page 2: Optional Accessories
· LA-201 120 VAC Power Supply · LA-121 BNC Adapter (72MHz model only) · Warranty Card · User Manual Optional Accessories See page 18 Listen™ and the Listen Logo are registered trademarks of Listen Technologies Corporation. LT-800_2004_01_18 © 2004 Listen Technologies Corporation. All Rights Reserved. -
Page 3: Table Of Contents
Table of Contents Architectural Specifications ......... . .2 Specifications . -
Page 4: Architectural Specifications
63Hz to 15KHz, ± 3dB at 72MHz, or of 63Hz to 10kHz, ± 3dB at 216MHz. It shall have two mixing audio inputs. The device shall have the following audio controls: input level, mix level and an adjustable low pass shelving filter. The Listen LT-800 is specified. Specifications... -
Page 5: Block Diagram
LT-800 Block Diagram POWER Red LED In-Line CHANNEL 115VAC Power Supply LA-201 60Hz (provided) 15VAC, 1A Power Supply Down CPU Module Red LED TEST TONE Listen LED Display On/Off 12VDC 400Hz Top Mounted Antenna Stud (Antenna not provided) Input 1 VU Meter... -
Page 6: Quick Reference
Quick Reference LT-800 Front Panel: Controls & Displays Top antenna connection: Remove rubber plug and screw antenna in place. Shows which channel is Indicates RF selected output power (full, Adjust audio input levels of Indicates audio input ½ or ¼) - select INPUT 1 and INPUT 2 here. -
Page 7: Setup Instructions
LT-800 with top mount LA-102-072MHz, LA-106-216MHz Telescoping Antenna connected through top of unit. Note: If you will be using your LT-800 with receivers that do not have SQ capability, disable the SQ feature. LA-122 Remote Antenna See RF Reception Maximization Strategies and For rack mounting Coaxial Cable on pages 10 and 11. -
Page 8: Audio Control
ON, plug a headset into the 3.5mm jack located on the LT-800’s front panel to listen to the audio Press POWER button and verify power connections. When “ON”, channel display LED will be lit. -
Page 9: Operating Instructions
Select a channel Listen’s Frequency Compatibility Tables (pages 12-13) Select the transmit channel by pressing the channel to find the LT-800 channel that corresponds with the UP and DOWN buttons. See Channel Selection on receiver’s frequency. As much as possible, Listen has page 9 for more information. -
Page 10: Listen Sq
Listen SQ™- Improving Your Listening Experience We are accustomed to listening to low noise, high fidelity audio (delivered via CD, SQ Summary DVD, etc.). FM radio systems, such as those made by Listen, have more inherent · Improves noise perform- noise compared to most sound systems. -
Page 11: 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 the LT-800, press both the UP and DOWN buttons simultaneously for 5 seconds. Repeat the process to unlock. -
Page 12: 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 transmitting and receiving antennas is critical to maximizing signal strength. -
Page 13: Coaxial Cable
Coaxial Cable The antenna for the LT-800 can be mounted directly on the unit if desired. However, you may find that the unit will provide better performance when the antenna is located elsewhere. If you plan to mount the antenna in a different loca- tion than on the top of the unit, you must use cable and connectors rated at 50 Ohms. -
Page 14: 72 Mhz Frequency Compatibility Table
72MHz Compatibility Chart Frequency Phonic Listen Comtek Phonak Williams* Gentner Telex Drake 72.0250 (11, 1) 72.0500 72.0750 (12, 3) 72.1000 A, (13, 4) 72.1 72.1250 (14, 5) 72.1500 72.1750 (15, 7) 72.2000 K, (8) 72.2 72.2250 (16, 9) 72.2500 (10) 72.2750 (17, 11) 72.3000... -
Page 15: 216 Mhz Frequency Compatibility Table
216MHz Compatibility Chart Frequency Phonic Light Listen Comtek Phonak Williams Gentner Speed 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 216.5375 216.5625... -
Page 16: Troubleshooting
You may be providing too much audio level for the input stage to handle. Make sure the SQ switch is in the correct position on both the LT-800 and the receivers you are using. If your receivers do not have SQ, make sure the SQ switch inside the top of the LT-800 is turned off (see page 5). - Page 17 First make sure that the receivers you are using are operating properly, then make sure that you have an antenna connected either to the top of the LT-800 transmit- ter or connected to the back of the unit (but not both!). The antenna should be as high as possible and free of obstacles.
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Page 18: Compliance Notice
Listen’s LT-800 Transmitter (216MHz only) Listen’s LT-800 transmitter is authorized by rule under the Low Power Radio Service (47 C.F.R. Part 95) and must not cause harmful interference to TV reception or United States Navy SPASUR installations. You do not need an FCC license to operate these transmitters. -
Page 19: Warranty
Warranty Listen Technologies Corporation (Listen ) warrants the LT-800 Stationary Transmitter 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. This warranty is only available to the original end purchaser of the product and cannot be transferred. -
Page 20: Optional Accessories
LA-124 for 216MHz LA-107 for 216MHz 25 feet (7.6 m) of RG58 coax cable. LT-800 Rack Mount Options LA-326 Rack Mounting Kit* Includes components for single and dual rack Antenna Kit for the configuration and a security cover... - Page 21 Optional Accessories continued Replacement BNC Adapter BNC Connector BNC Connector 115vac/60hZ for RG58 for RG8 LA-121 Power Supply LA-127 LA-128 LA-201 RG8 Low Installation of RG58 Coaxial Cable LossCoaxial BNC Connectors Cable LA-114 LA-112 LA-113...
- Page 24 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...