productmanual 11x17.qrk 10/11/99 2:42 PM Page 1 TM User’s Manual for all Listen Products TM LIS T E N T E C H N O L O G I E S C O R P O R AT I O N P.O. Box 683010 Park City, Utah 84068-3010 U.S.A. Shipping: 1762A Prospector Avenue Park City, UT 84060 Telephone: +1.435.647.0318 Toll Free: 1.800.330.0891 Fax: +1.435.647.0316 Internet: www.listentech.com E-Mail: info@listentech.com Printed in U.S.A.
productmanual 11x17.qrk 10/11/99 2:42 PM Page 2 Introduction 216MHz Frequency Compatibility Table (Continued) INTRODUCTION Assistive Listening Systems help enhance the ability to hear in many applications. These systems deliver audio directly to a person’s ear through an earphone. This earphone can be used in conjunction with a hearing aid or placed directly on the ear. The earphone is connected to a receiver, which picks up a broadcast transmission of an audio source.
productmanual 11x17.qrk 10/11/99 2:42 PM Page 3 216MHz Frequency Compatibility Table Table of Contents MISCELLANEOUS Technical Service Contacts . . . . . . . . . . . . . . . . . . . . . . . . .4 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Compliance Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Limited Lifetime Warranty . . . . . . . . . . . . . . . . . . . . . . . . . .
productmanual 11x17.qrk 10/11/99 2:42 PM Page 4 Technical Service Contacts & Compliance Notices Technical Service Contacts If technical service is needed, please contact Listen. Pre-authorization is required before returning Listen products. If products were damaged in shipment, please contact the carrier, then contact Listen for replacement or repair requirements payable by the carrier. Toll Free: 1.800.330.0891 Telephone: +1.435.647.0318 Fax: +1.435.647.0316 Internet: www.listentech.
productmanual 11x17.
10/11/99 2:42 PM Page 6 Receiver Troubleshooting LR-400 and LR-500 Receiver Troubleshooting The LR-400/LR-500 has no power. Make sure the unit has either fully charged batteries or a Listen approved wall transformer connected to the unit. Make sure the VOLUME knob has been rotated to the ON position. If this does not work, try a different set of batteries. Make sure the batteries are installed properly. There is no audio. Make sure you have turned the volume control up.
10/11/99 2:42 PM Page 7 Listen Receivers: LR-500 and LR-400 Specifications LR-500 Specifications LR-400 Specifications RF Frequency Range: 72MHz: 72.05 - 75.95MHz 216MHz: 216.025 - 216.975 MHz RF Frequency Range: 72MHz: 72.05 - 75.95MHz 216MHz: 216.025 - 216.975 MHz Sensitivity: .6uV typical, 1uV maximum for 12dB SINAD Max deviation at ± 70kHz Sensitivity: .
10/11/99 2:43 PM Page 8 LT-800 Stationary Transmitter Preparation Preparing the LT-800 for Use Listen Receivers: LR-500 and LR-400, Charging (cont.) & Programming 5 Remove the product from the shipping container and plastic cover. Inspect for physical 1 damage. See "Technical Service Contacts" (Page 4) if damage has occurred.
10/11/99 2:43 PM Page 9 Listen Receivers: LR-500 and LR-400, Batteries Receiver Battery Status Icon The status of the battery is indicated by the battery symbol on the LCD. When the battery is fully charged, all three segments of the battery symbol will be displayed, as shown. As fewer battery segments are displayed, the lower the battery level, as shown. When the batteries are almost fully discharged, the battery segments and the red LED near the volume control will blink quickly.
productmanual 11x17.qrk 10/11/99 2:43 PM Page 10 LT-800 Stationary Transmitter, Operation & Selecting a Channel Listen Receivers: LR-500 and LR-400, Locking & Indicators Operating the LT-800 Locking into Only One Channel 1 Make sure the unit is powered on. Selecting a Channel to Transmit On To lock the receiver so users cannot change the channel, press the SEEK button until the LOCK symbol is displayed.
productmanual 11x17.qrk 10/11/99 2:43 PM Page 11 Listen Receivers: LR-500 and LR-400 Operating Listen Receivers (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 switched correctly for your batteries (see Step 4). 2 pressing the UP and DOWN buttons.
10/11/99 2:43 PM Page 12 LT-800 Stationary Transmitter Troubleshooting Listen Receivers: LR-500 and LR-400, Preparing for Use LT-800 Troubleshooting Listen Receivers: LR-500 Programmable Display Receiver and LR-400 Display Receiver The LT-800 has no power. Make sure the power transformer is connected to a power source and is connected to the jack marked "Power Input". Make sure the POWER button is pressed. There is no audio or the audio level is too low.
10/11/99 2:43 PM Page 13 LT-700 Portable Transmitter Specifications LT-700 Portable Transmitter Specifications RF Frequency Range: 72MHz: 72.05 - 75.95MHz 216MHz: 216.025 - 216.975 MHz Transmitter Stability: 50 PPM Modulation Type: FM, ±25 kHz wide band, ±7.
10/11/99 2:43 PM Page 14 LT-700 Portable Transmitter Preparation (cont.), Operation LT-700 Portable Transmitter Troubleshooting Preparing the LT-700 for Use (continued) Operating the LT-700 Transmitter LT-700 Troubleshooting 6 1 The LT-700 has no power. Connect the microphone to the microphone jack on the top of the unit. The unit uses the microphone cable as an antenna. If you are using the line input, use the special cable accessory designed for this purpose.
10/11/99 2:43 PM Page 15 LT-700 Portable Transmitter, Battery Recharging Charging the Batteries (continued) 4. Install NiMH rechargeable batteries in the battery compartment, ensuring that proper polarity has been observed. Top of Unit and Battery Compartment + _ _ LT-700 Portable Transmitter, Selecting a Channel Operating the LT-700 with a Wall Transformer 1. The unit will operate normally when connected to a wall transformer. 2.
10/11/99 2:43 PM Page 16 LT-700 Portable Transmitter Programming LT-700 Portable Transmitter LT-700 Programming Locking into One Channel Unlocking and Locking the Access Door Charging Batteries Using SmartCharge™ In General: The LT-700 can be programmed to transmit on a limited number of channels. For applications where users are required to select a channel (such as classrooms), and you don’t want them to have to scroll through all of the available channels, this feature is ideal.
