Listen Technologies 700-002 LPRS Model LT-700-072 User Manual
Listen Technologies Corporation LPRS Model LT-700-072
Exhibit 8
| Download: |  |
| Mirror Download [FCC.gov] | |
| Document ID | 549598 |
| Application ID | 3hKvoJf+EXHT4fi9VJec1w== |
| Document Description | Exhibit 8 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 28.89kB (361098 bits) |
| Date Submitted | 2005-06-08 00:00:00 |
| Date Available | 2005-06-08 00:00:00 |
| Creation Date | 2004-07-22 14:13:35 |
| Producing Software | Acrobat Distiller 6.0.1 (Windows) |
| Document Lastmod | 2004-07-22 14:13:35 |
| Document Title | untitled |
User’s Manual LT-700 Portable Transmitter 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 Don’t miss a single sound. Listen. Listen® and the Listen logo are registered trademarks of Listen Technologies Corporation Welcome to Listen! Dear Valued Customer, Thank you for choosing Listen! All of us at Listen are dedicated to providing you the highest quality products and prompt, efficient customer care. Our products are manufactured in an ISO-9000 factory that has been independently certified to the highest quality standards. We stand ready to answer any questions you might have during installation or in the operation of our products. Should there be any problems with your Listen products, we are ready to help you in any way we can. Should you have any comments on how we might improve our products or our service, we’re here to listen. Here’s how to reach us: Telephone: +1.801.233.8992 Fax: 1.801.233.8995 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. LT-700_2004_02_18 © 2004 Listen Technologies Corporation. All Rights Reserved. Listen Part Number · · · 72 MHz: LT-700-072 216 MHz: LT-700-216 LT-700-072 (72MHz or 216MHz) Warranty Card User Manual Welcome to Listen! LT-700 Package Contents Optional Accessories See pages 32-33. ii this page intentionally left blank iii Table of Contents Table of Contents Architectural Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Charging Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Operation with a Wall Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Supplementary Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Listen SQ™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 RF Reception Maximization Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 72 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 216 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Compliance Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Specifications Specifications Architectural Specifications The portable FM transmitter shall be capable of broadcasting on 57 channels. The unit shall incorporate a microphone sensitivity switch. The device shall broadcast on both wide and narrow band channels with a SNR of 80dB or greater. The device shall have an audio frequency response of 50Hz to 15kHz, ±3dB at 72MHz, or of 50Hz to 10kHz, ±3dB at 216MHz. The device will incorporate a mute switch. The battery door shall be capable of being mechanically locked. The device shall incorporate an LCD display that indicates channel, battery level, low battery, battery charging, channel lock ,program mode, channel lock status and RF signal strength. The portable transmitter shall incorporate automatic battery charging circuitry for recharging of NiMH batteries. The Listen LT-700 is specified. Specifications Specification LT-700-072 LT-700-216 RF Frequency Range 72.025 - 75.975 MHz 216.025 - 216.987 MHz Number of Channels 57 (17 wide, 40 narrow) 57 (19 wide, 38 narrow) Sensitivity .6uV typical, 1 uV maximum for 12dB SINAD Frequency Accuracy RF 50 PPM Transmission Range From 0ft to 50ft(15.2m) -150 ft (45.7m) Output Power Antenna Antenna Connector Compliance continued on next page ±.005% stability 0° to 50°C (32° to 122° F) Transmitter Stability Less than 10mW Less than 100mW Uses microphone cable 3.5mm connector FCC Part 15, Industry Canada Specifications Specifications continued Specification LT-700-072 LT-700-216 ** All system specifications are wireless end-to-end System Frequency Response 63Hz - 15kHz (± 3dB) 63Hz - 10kHz (±3dB) System Signal to Noise Ratio (A-weighted) SQ enabled: 80dB; SQ disabled 60dB SQ enabled: 80dB; SQ disabled 50dB System Distortion Audio Microphone Input Microphone Sensitivity Line Input Phantom Power Set-up Controls, behind the door Controls Indicators Power, mute, channel UP and DOWN Unit can be programmed so that only desired channels are displayed to the user; channel selection can be locked by holding the UP or DOWN button 5 seconds. LED Battery Life (Listen batteries) Battery Charging (NiMH only) Power Supply Connector Compliance Dimensions Unit Weight Unit Weight with batteries Shipping Weight Door Temperature - Operation Environmental Mic sensitivity, NiMH/alkaline battery, SQ enable/disable Programming Battery Type Physical Unbalanced, ring of 3.5mm connector, (-10dB nominal input level adjustable, +4dBu maximum, impedance 10k Ohms) 3VDC User Controls LCD Display Power <2% total harmonic distortion (THD) at 80% deviation Unbalanced, tip of 3.5mm connector, (55 dBu nominal, -32dBu maximum, impedance 21 Ohms) Three position switch: high, middle and low; 6dB increments Temperature - Storage Humidity Red, illuminates when unit is on. Flashes when batteries are low, or to indicate charging. Flashes 2x when muted Channel, lock status, programming Two AA batteries, alkaline or NiMH 20 hours alkaline (LA-361), 10 hours NiMH rechargeable (LA-362) Fully automatic, 14 hours 2.3mm OD by 0.7mm ID, barrel type connector. 7.5VDC, center positive 300mA. Drop in contact points for use with Listen charging cases. UL Listed 3.0 in x 1.0 in x 5 in WxDxH (7.6cm x 2.5cm x 13.cm) 3.9oz (111g) 5.8 oz (164.4g) 1.0 lbs (0.45kg) Manually lockable. UP, DOWN and power through door, other controls behind door (see Controls above) -10° to 40°C (14° to 104° F) -20° to 50°C (-4° to 122° F) 0 to 95% relative humidity, non-condensing Quick Reference Quick Reference LT-700 Front 3.5mm Input Jack A Listen microphone or line level cable connects here. MUTE / TALK switch (more information on page 5) Look & Listen Display™ The display shows 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 6. Power Switch Press PWR switch to turn unit on. Press and hold to turn unit off. When in PROGRAM mode, this switch is used to toggle the lock out (L/O) mode for a channel. Use UP and DOWN buttons to select a channel. Press and hold both buttons for 5 seconds to enter PROGRAM Press and hold either button for 5 seconds to lock the channel. Press and hold either button mode. The PGM icon will appear in the display. To exit PROGRAM, let unit sit idle for 5 seconds. again to unlock. Mic Sensitivity Switch Battery Select Switch LT-700 Top of Unit SQ Switch Quick Reference Quick Reference LT-700 Inside Access Door MUTE / TALK switch - this mutes the mic only and not the line input when in the mute position. LED indicators: Steady Red: Normal operation Slow Flashing: Battery is low Slow Flashing while charging: Unit is charging Fast Flashing: Mute 3.5mm Input Jack A microphone or line level cable connects here. Mic Sensitivity Switch - it arrives set at MID, which will work for most microphones. If your mic level is too low, change the switch to HI; if the level is too high, switch to LO. (see page 8 for more information) 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. You should turn SQ off if you are using any non Listen receiver or older Listen receiver that does not have the SQ feature. (see page 20 for more information) A Note on Charging NiMH Batteries If you are using NiMH batteries in any Listen product, you should allow adequate time for the charger (charging case or LA-202) to complete a full charge cycle on the batteries. This takes about 13 hours. Quick Reference Quick Reference LT-700 Look & Listen™ Display When dots are illuminated, the microphone is active. If this display does not appear, the microphone is muted. Indicates the unit is in PROGRAM mode (see next page). 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 the unit sit idle for 5 seconds. Indicates the currently tuned channel Battery level indicator. The indicator flashes, along with the red LED on top of the unit, to alert you when the battery is low and needs to be charged or changed. (see information below) If the padlock icon is visible, the channel is locked. Press and hold either the UP and DOWN button for 5 seconds to lock or unlock. When in the PROGRAM mode, L/O indicates whether a particular channel is locked out. LT-700 Battery Indicator All three segments showing: The batteries are at 50% or greater capacity. Two segments showing: The batteries are at 25-49% capacity. One segment showing: Your batteries less than 25% capacity. When this segment begins flashing along with the LED on top of the unit, you should immediately change your batteries or recharge them (if using NiMH batteries). Setup Instructions LT-700 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 29 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. To unlock the door, rotate the lock ¼ turn counterclockwise. Grip the two tabs with your thumb and index finger and pull the door downward. Do NOT place batteries in the unit yet. Select Battery Type See diagram on page 8. You have two choices: NiMH and Alkaline. The unit is shipped with the switch in the Alkaline position. Use a pen or small screwdriver to select the battery type. CAUTION: If you are using any battery type other than rechargeable Nickel Metal Hydride (NiMH) batteries, make sure the BATTERY selection switch is in the alkaline position. Unlocked Locked WARNING: Do not place the BATTERY switch in the NiMH position if you are not using Nickel Metal Hydride Batteries. The NiMH position will attempt to charge any batteries in the unit, even if they are not the proper type. Charging non-Nickel Metal Hydride (NiMH) batteries will result in physical harm, destruction of property and/or fire. Setup Instructions LT-700 Setup Instructions continued 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). See page 20 for more information on SQ. Mic Sensitivity Switch Battery Select SQ Switch Switch Set Mic Sensitivity Switch The microphone sensitivity switch is located inside the battery compartment, to the left of the BATTERY selection switch. The LT-700 is shipped with this switch in the center (MED) position. Listen recommends the following settings for our microphones. If you are using a microphone from another vendor, you may need to experiment with different settings. Part # LA-261 LA-262 LA-268 LA-270 LA-277 LA-272 LA-273 LA-278 LA-274 LA-276 Description Lavalier Microphone Over-the-Head Microphone Over-the-Ear Microphone Noise Cancelling Microphone Confrerence Microphone Over-the-Head Mic w/Earphone Over-the-Ear Mic w/Earphone Behind-the-Head Microphone Handheld Microphone Collar Microphone Setting MED MED MED MED MED MED MED MED HI HI NOTE: If the setting is too low for the microphone in use the audio will be faint. If the setting is too high for the microphone in use the audio will be distorted. Setup Instructions LT-700 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). NOTE: Listen uses 1800mAh (milli-Amp-hour) constant current NiMH (Nickel Metal Hydride) batteries. These may be purchased from your Listen dealer (ask for part number LA362). Connect the Microphone The microphone jack is located on top of the unit. The LT-700 uses the microphone cable as an antenna for transmitting. LA-268 Over-the-Ear Microphone Setup Instructions LT-700 Setup Instructions continued Optional - Connect the Line Input Cable. This cable allows you to connect a TV, CD player or other equipment to the LT-700. To do this, you must order the Listen LA-263 Line Input Cable (it is not included with your unit). This cable allows you to connect both a microphone and line input to the jack on top of the LT-700. See the diagram below for connection information. You can use the microphone and the line input at the same time. Please note that the MUTE switch mutes only the microphone; the line source will continue transmitting when the switch is in the MUTE position. If you prefer to make your own cable for connection of mic and line inputs, connect shown in the following diagram: Mono-White Stereo-Red 10 Video-Yellow Make sure the unit is on When you press the power button, the LED on top of the unit will be illuminated and the LCD display will be visible. Operating Instructions LT-700 Operating Instructions Select the channel for transmitting Please refer to Channel Selection on pages 18-19 for guidelines on choosing an interferencefree channel. To select a channel, press either the channel UP or DOWN button until the display reads the channel you want. To lock your selection, press and hold the UP or DOWN button for 5 seconds. When locked, the small padlock icon will be visible on the display. Press and hold either button again to unlock. 72MHz Units The LT-700-072 operates on 17 wide band channels and 40 narrow band channels. Channels represented by letters in the display (i.e. A) are wide band channels; channels represented by numbers are narrow band channels. 216MHz Units The LT-700-216 operates on 19 wide band channels and 38 narrow band channels. Channels beginning with a “2” are wide band channels and channels beginning with a “1” or “3” are narrow band channels. Listen recommends using wide band channels whenever possible, as they are not as noisy as narrow band channels. Refer to the Frequency Compatibility tables (pages 22-25) for specific frequencies and compatibility with other manufacturers. Also refer to pages 18-19 for more information on channel selection. 11 Operating Instructions LT-700 Operating Instructions continued Close the Access Door Lock it if desired by turning the locks on the side of the unit to the vertical position. See diagram on page 7. Using the red MUTE / TALK switch on top of the unit The red mute/talk switch on top of the unit is a handy way to “turn off” the audio from the microphone. Slide the switch to the mute position and the microphone audio is muted. When the microphone audio is muted, the LED on top of the unit flashes rapidly. Slide the switch back to the talk position and the microphone audio will return to the transmission. If you are using line level audio, it will not be effected by the mute/talk switch. LT-700 Shown in the TALK position 12 Programming LT-700 Programming Instructions 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 or language interpretation), and you don’t want them to have to scroll through all of the available channels, this feature is ideal. You can set up the LT-700 so that only the channels they need to use are available for selection with the UP and DOWN buttons. Enter PROGRAM Mode Press and hold the UP and DOWN keys simultaneously until the PGM symbol is displayed (see the Look & Listen™ Quick Reference on page 6). Scroll Through Channels to Lock or Unlock Use the UP and DOWN channel select keys to scroll through all available channels. If the L/O symbol appears with a particular channel’s indicator, this means that particular channel will not be available for selection by the user. To toggle a channel between locked out and available, press the POWER button. To exit PROGRAM mode Allow the unit to sit idle (don’t press any buttons) for 5 seconds. The LT-700 will exit the PROGRAM mode and the PGM icon will disappear. 13 Charging Batteries LT-700 Charging Batteries The LT-700 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” on the side of the unit. The unit can be operated while the batteries are charging. Connect LA-202 here and plug it into an AC wall outlet. To charge the batteries using a drop-in charger, simply place the unit into a slot in the charger and connect the charger to power. Make sure the unit is fully seated in its slot. One of several charging cases available from Listen. Check the Listen website for more details. SmartCharge™ uses a pulse charging, which greatly extends the life of Nickel Metal Hydride (NiMH) batteries. The entire charging process takes about 13 hours. Listen recommends that you allow the charger to complete its full cycle every time for maximum battery life. IMPORTANT: DO NOT ATTEMPT TO CHARGE ANY TYPE OF BATTERY OTHER THAN NiMH (NICKEL METAL HYDRIDE) with your Listen equipment. Alkaline batteries may explode when connected to a charger. Other risks of charging non-NiMH batteries include destruction of property or fire. IMPORTANT: In order to charge NiMH batteries, the BATTERY SELECT switch in your Listen product must be set to the NiMH setting. Use a pen or small screwdriver to move the switch (located in the battery compartment) to the proper position. 14 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; 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. Charging Batteries LT-700 Charging Batteries continued When not using the LT-700, 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. NOTE: Listen uses 1800mAh (milli-Amp-hour) constant current NiMH (Nickel Metal Hydride) batteries. These may be purchased from your Listen dealer (ask for part number LA-362). One of several charging cases available from Listen. See www.ListenTech.com for more options. LA-311 - 16-unit Drop In Charging Case shown 15 Wall Transformer Operation LT-700 Wall Transformer Operation The LT-700 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 LT-700 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet. You do not need to have batteries installed in the LT-700 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 5. Please review the information on page 14 for important information regarding battery type and charging. 16 Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Listen SQ™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 RF Reception Maximization Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 72 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 216 MHz Frequency Compatibility Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Compliance Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Supplementary Information Supplementary Information 17 Channel Selection Channel Selection It is important to choose channels that are free from interference to achieve proper operation of your Listen equipment. This process is trial and error. Before turning on the transmitter, listen to the wide band channels (lettered channels at 72MHz and channels that start with a “2” for 216MHz when using a Listen receiver). Listen to the audio through the headphone or on a Listen receiver or receiver / speaker. Choose a channel with the least amount of interface. Unless you are interfacing with an existing narrowband transmission system, always use a wide band channel. If you are using multiple channels follow this process: a. Same Space If you are using multiple transmitters in the same space, the most number of channels that will work simultaneously is six at 72MHz and three at 216MHz. With all of the transmitters off, listen for interference on all the wide band channels via the headphone jack on a Listen receiver. Using the frequency compatibility tables on pages 22-25, eliminate any channels that have noticeable interference. Now choose the channels with the widest channel spacing. It is recommended that adjacent channels be spaced at least 300kHz. If there is no interference the following channels are recommended: A, C, E, I, J, and H for 72MHz and channels 2A, 2K and 2V at 216MHz. b. Distributed Spacing If you are using transmitters that are spread out over space, you can achieve more simultaneous broadcast channels. However, it is critical that your receiver(s) be located as close to its transmitter as possible. You can use adjacent channels (see frequency compatibility tables on pages 22-25) in this case as long as the adjacent channel transmitter is at least 50% further away from the receiver as its transmitter. Example: The transmitter for the receiver on channel E is 100 feet from the receiver. The adjacent channel transmitter on channel D should be at least 150 feet away. 18 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. Notes in regard to using 72MHz and 216MHz systems: Wide Band Recommendation Listen recommends that you always use a wide band channel unless you need to be compatible with existing narrow band receivers from other manufacturers. Wide band channels have lower noise Channel Selection Channel Selection continued than their narrow band counterparts. i. 72MHz in a secondary frequency band. This means that other transmitters are licensed to use these frequencies. Thus, you may experience interference from paging transmitters and other types of transmissions. You will need to find a clear channel by listening to all the wide band channels. ii. 216MHz is a primary frequency band and no other types of transmissions are authorized to use it. Thus, you will find the highest probability of clear channels in this band. However, you may experience intermodulation of the TV Channel 13 aural carrier if there is a channel 13 transmitter in your area and you are close to the transmitter. If you cannot find a clear channel in 216MHz band due to channel 13, it is recommended that you switch to a 72MHz system. At 72MHz The LT-800 at 72MHz operates on 17 wide band channels and 40 narrow band channels. · Letters= Wide Band Channels (Example: E) · Numbers= Narrow Band Channels (Example: 32) At 216MHz The LT-800 at 216MHz operates on 19 wide band channels and 38 narrow band channels. · “2” as left digit= Wide Band Channel (Example: 2C) · “1” and “3” as left digits= Narrow Band Channels (Examples: 1A; 3R) 19 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 uses a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have the SQ feature enabled to achieve the desired results. SQ is available on new Listen systems, including the system you received in this shipment. If you are planning to use this product with older Listen systems that do not have Listen SQ or equipment not manufactured by Listen, you should disable Listen SQ. Your Listen equipment has been shipped to you with the SQ feature enabled. You may need to disable the SQ function for one or more of the following reasons: 1. You are using your new Listen system with older version Listen equipment that does not have the SQ function. 2. You are using your new Listen system with equipment supplied by other manufacturers. 3. You expect that end users may bring and use their own receivers that don’t have the SQ function. 20 SQ Summary · Improves noise performance by at least 20dB · SQ is NOT compatible with older version Listen products · SQ is NOT compatible with other manufacturers’ products · SQ is NOT squelch · To work properly, SQ must be enabled for both the transmitter and receivers · SQ can be disabled to permit operation with older Listen products or other manufacturers’ products 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 using your system, keep in mind that the location of both the transmitter and receiver is critical to maximizing signal strength. b. Eliminate or minimize obstructions between the transmitter and the receivers. c. Minimize the distance between the transmitter and the receivers. d. Stay clear of metal objects. e. Keep the microphone and headphone cables fully extended. Do not shorten or coil microphone and headphone cables. These cables are the antennas for you portable products. RF Reception Strategies RF Reception Maximization Strategies NOTE: If the RF signal to the 216MHz model receivers is too high, the audio will be distorted. This may happen if you are within 5 feet of the 216MHz transmitter. 21 72MHz Compatibility Chart 22 72MHz Compatibility Chart Wide band frequencies in shaded sections *Parenthesis indicate T35 and T20 narrowband. Frequency MHz 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 72.7500 72.7750 72.8000 72.8250 72.8500 72.8750 72.9000 72.9250 72.9500 72.9750 Listen Phonic Ear Comtek Phonak Williams* A1 (11, 1) (2) (12, 3) A, (13, 4) (14, 5) (6) (15, 7) K, (8) (16, 9) (10) (17, 11) B, (18, 12) (19, 13) (14) (20, 15) N, (16) (21, 17) (18) (22, 19) C, (23, 20) (24, 21) (22) (25, 33) O, (24) (26, 25) (26) (27) D, (28) (29) (30) (30, 31) P, (32) (31, 33) (34) (32, 35) E, (33, 36) (34, 37) (38) (35, 39) A2 A3 A4 K5 K6 B7 B8 N9 10 11 10 11 10 11 N0 C1 12 13 12 13 12 13 C2 O2 14 15 16 17 18 19 20 14 15 16 17 18 19 20 14 15 16 17 18 19 20 Chart continued on next page D5 D6 P7 P8 E9 E0 Gentner Telex Drake 72.1 72.2 72.3 72.4 72.5 72.6 72.7 72.8 72.9 10 11 12 13 14 15 16 17 18 19 Wide band frequencies in shaded sections *Parenthesis indicate T35 and T20 narrowband. Frequency MHz 74.6250 74.6500 74.6750 74.7000 74.7250 74.7500 74.7750 75.2250 75.2500 75.2750 75.3000 75.3250 75.3500 75.3750 75.4000 75.4250 75.4500 75.4750 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 Listen 33 Phonic Ear 33 Comtek 33 Phonak E3 34 35 34 35 34 35 E4 I5 36 37 36 37 36 37 I6 I7 38 39 38 39 38 39 I8 J9 40 21 40 21 40 21 J0 R1 22 23 22 23 22 23 R2 F3 24 25 24 25 24 25 F4 S5 26 27 26 27 26 27 S6 G7 28 29 28 29 28 29 G8 T9 30 31 30 31 30 31 T0 H1 32 32 32 H2 Williams* Gentner (36, 40) (41) 20 (37, 42) I, (38, 43) 21 (39, 44) (45) 22 (40, 46) (41, 47) (48) 23 (42, 49) J, (43, 50) 24 (55, 51) (52) 25 (45, 53) R, (54) 26 (46, 55) (56) 27 (47, 57) F, (48, 58) 28 (49, 59) (60) 29 (50, 61) S, (62) 30 (51, 63) (64) 31 (52, 65) G, (53, 66) 32 (54, 67) (68) 33 (55, 69) T, (70) 34 (56, 71) (72) 35 (57, 73) H, (58, 74) 36 (59, 75) (76) 37 (60, 77) Telex Drake 72MHz Compatibility Chart 72MHz Compatibility Chart continued 75.5 75.6 75.7 75.8 75.9 23 216MHz Compatibility Chart 216MHz Compatibility Chart Wide band frequencies in shaded sections Frequency MHz 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 1A 2A 3A 1B 2B 3B 1C 2C 3C 1D 2D 3D 1E 2E 3E 1F 2F 3F 1G 2G 3G 1H 2H 3H 216.4125 216.4250 216.4375 216.5125 216.5250 1J 2J 3J 1K 2K Phonic Ear 41 42 43 44 45 46 47 48 49 51 Chart continued on next page 24 Comtek Phonak 41 42 43 44 45 10 11 46 12 13 47 14 15 48 16 41 21 42 43 22 23 44 45 24 25 46 12 13 47 26 27 48 16 17 49 18 21 51 17 49 18 61 29 Williams Gentner CSI 10 14 11 AVR Light Speed C01 N01 C05 15 C09 N09 C12 N12 C18 N18 C21 18 10 Frequency MHz 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 Listen 3K 1L 2L 3L 1M 2M 3M 1N 2N 3N 1P 2P 3P 1R 2R 3R 1S 2S 3S 1T 2T 3T 1U 2U 3U 1V 2V 3V Phonic Ear 52 53 54 55 56 57 58 59 60 Comtek 22 23 52 24 25 53 26 27 54 28 29 55 30 31 56 32 33 57 34 35 58 36 37 59 38 39 60 40 Phonak 62 28 52 64 65 53 81 82 54 68 69 55 83 84 56 72 73 57 76 85 58 86 77 59 88 79 60 80 Williams Gentner 11 CSI AVR Light Speed 12 C24 C25 12 13 16 14 19 15 N64 216MHz Compatibility Chart 216MHz Compatibility Chart continued Wide band frequencies in shaded sections C29 C32 C33 N72 C37 N77 13 17 C39 C40 N80 25 Troubleshooting LT-700 Troubleshooting The LT-700 has no power Make sure the unit has fully charged batteries, or has a Listen LA-202 wall transformer connected to it. Press the ON button. If this does not work, try a different set of batteries. Make sure the batteries are installed correctly. There is no audio Make sure the MUTE/TALK switch is in the TALK position. Make sure you have the microphone plugged all the way in to the input jack. Make sure you are using a Listen approved microphone (see list on page 8). If you are using the line input, make sure you have connected a line level, unbalanced input at the “ring” of the connector. The audio is distorted Make sure you are using an approved Listen microphone. Try using a different mic sensitivity switch setting (the switch is located inside the battery compartment of the unit). If you are using a line level input, try turning down the level of the input. If you are using any equipment that does not have SQ capability, turn off SQ in the LT-700. There is hum in the audio The microphone may be too close to a transformer. Try moving around and see if the hum goes away. The microphone level is low The microphone must be in close proximity to the person who is speaking. If this does not work, try using a head-worn microphone. The mic sensitivity switch may be on the wrong setting, see page 8. Try a different setting (the switch is located inside the battery compartment). Some microphones have directional pickups, ensure that the microphone in use is oriented and positioned properly (pointing at the speakers mouth). 26 The audio doesn’t have much fidelity Troubleshooting LT-700 Troubleshooting continued If your receivers all have SQ capability, activate SQ in all units by moving their switches to the ON position. In the LT-700 and all SQ-equipped receivers, the SQ switch is located inside the battery compartment. See page 20 for more information. There is too much noise This is most likely because the microphone is not close enough to the talker’s mouth, and it is picking up background noise. Try positioning the microphone closer or try using a microphone that is directional (such as a head-worn mic). If you are using a narrow band channel, try switching to a wide band channel. Try another setting on the mic sensitivity switch (located inside the battery compartment). Ensure the microphone is not brushing up against anything. See page 8 for more information. There is interference Try different frequencies until you find a clear channel. If this does not work, try a different frequency band (i.e. if you are using 72MHz equipment, exchange it for 216MHz equipment). This is done by returning the equipment to Listen (no charge) and swapping it for the alternate frequency band equipment. I cannot pick up the signal on the receiver Make sure the transmitter and the receiver are on the same frequency band (72MHz or 216MHz) and channel. I can pick up the signal on the receiver, but it sounds like it’s not tuned in Check to make sure the transmitter and receiver are on exactly the same channel number / letter. If using another brand of receiver refer to Listen’s Frequency Compatibility Tables on pages 22-25). 27 Troubleshooting LT-700 Troubleshooting continued There is not sufficient range The LT-700 is a portable transmitter that uses the microphone cable as an antenna and the range will vary depending on the location of the receivers compared to the transmitter. You can only expect about 100 feet of average effective working range. It’s confusing for users to have 57 channels when switching between channels Use the PROGRAM function to lock out unwanted channels. This way, users will only need to scroll among a few channels. I cannot change the channel It is probably locked (check for the padlock icon). To unlock, press and hold the UP or DOWN button for 5 seconds. My batteries are not charging Make sure you are using NiMH batteries and that the BATTERY SELECT switch (inside the battery compartment) is set to the NiMH position. Make sure the batteries are installed correctly. Make sure you are using the right kind of wall transformer (Listen part number LA-202) or charging case. Make sure the charging case is connected to power and the unit is securely pushed into its slot in the case. NOTE: Listen uses 1800mAh (milli-Amp-hour) constant current NiMH (Nickel Metal Hydride) batteries. These may be purchased from your Listen dealer (ask for part number LA-362). 28 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. Compliance Notice Compliance Notice Listen’s LT-700 Transmitter (216MHz only) Listen’s LT-700 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. These transmitters may only be used to provide: auditory assistance to persons with disabilities, persons who require language translation, or persons in educational settings; health care services to the ill; law enforcement tracking services under agreement with a law enforcement agency; or automated maritime telecommunications system (AMTS) network control communications. Two-way voice communications and all other types of uses not mentioned above are expressly prohibited. CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate Listen’s equipment. 29 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. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Reorient or relocate the receiving antenna. · Increase the separation between the equipment and receiver. · Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. · Consult the dealer or an experienced radio/TV technician for help. This equipment has been certified to comply with the limits for a class B computing device, pursuant to FCC and IC Rules. In order to maintain compliance with FCC and IC regulations, shielded cables must be used with this equipment. Operation with non-approved equipment or unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications made to the equipment without the approval of manufacturer could void the user’s authority to operate this equipment. 30 Warranty Warranty Listen Technologies Corporation (Listen®) warrants the LT-700 Portable Transmiter 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. Warranty is only valid if warranty card has been returned within 90 days of purchase. This warranty is void if damage occurred because of misuse or if the product has been repaired or modified by anyone other than a factory authorized service technician. Warranty does not cover normal wear and tear on the product or any other physical damage unless the damage was the result of a manufacturing defect. Listen is not liable for consequential damages due to any failure of equipment to perform as intended. Listen shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it. Listen specifically disclaims and negates any warranty of merchantability or fitness of use of such equipment including, without limitation, any warranty that the use of such equipment for any purpose will comply with applicable laws and regulations. The terms of the warranty are governed by the laws of the state of Utah, USA. Listen will only accept returned products with prepaid shipping and with a return authorization number. To receive a return authorization number call 1.800.330.0891 or +1.801.233.8992. Please see www.ListenTech.com or contact Listen for complete warranty details. 31 Optional Accessories 32 Optional Accessories LT-700 Microphones Lavalier Over-the-Ear Conference Hand Held LA-261 LA-268 LA-277 LA-274 Over-the-Head Collar Noise Canceling LA-262 LA-276 LA-270 Optional Accessories Optional Accessories Microphones with Active Earphones Over-the-Head Mic with Earphone Over-the-Ear Mic with Earphone LA-272 LA-273 Use Both an Audio Source and Mic Line/Microphone “Y” Cable These headsets combine cabling for both a transmitter and a receiver LA-263 33 34 Notes Notes 35 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
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.4 Linearized : No Page Count : 40 XMP Toolkit : XMP toolkit 2.9.1-13, framework 1.6 About : uuid:0af5f5c5-55f5-4850-af50-4611eca0b03b Producer : Acrobat Distiller 6.0.1 (Windows) Modify Date : 2004:07:22 14:13:35-06:00 Create Date : 2004:07:22 14:13:35-06:00 Document ID : uuid:23a1b87c-befb-43e6-927f-ffc606c33951 Format : application/pdf Title : untitledEXIF Metadata provided by EXIF.tools