Benutzeranleitung / Produktwartung 863.050 des Produzenten Listen Technologies
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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 performanc.
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Design Guide LT-700 LR-400/500 Supplementary Design Guide FM Technology Overview 5 System Overview 6 .H&RQFHSWVLQ'HVLJQLQJDQ)06VWHP N o t e s .
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3 Design Guide Portable FM Design Guide Table of Contents FM Technology Overview 5 S y s t e m O v e r v i e w 6 .H&RQFHSWVLQ'HVLJQLQJDQ)06VWHP .
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5 Design Guide Frequency Modulation (FM) Technology Overview )UHTXHQFPRGXODWLRQ)0LVDPHDQVRIWUDQVPLWWLQJDXGLRXVLQJHOHFWURPDJQHWLFZDYHV This same technology is used by local FM radio stations to broadcast voice and music.
6 Design Guide System Overview 7KHUHDUHWKUHHPDLQSDUWVWRD3RUWDEOH)06VWHP²,QSXWVRXUFHWUDQVPLWWHUDQGUHFHLYHU $PLFURSKRQHLVWKHPRVWFRPP.
Design Guide System Overview Listen offers two different portable receivers. Rec eivers /5 Portable Programmable 'LVSOD)05HFHLYHU0+] /.
8 Design Guide The range of a portable transmission will vary from one application to another. There are many different REVWUXFWLRQVWKDWFRXOGPLQLPL]HWKHUDQJH,QPRVWDSSOLFD.
9 Design Guide Key concepts in designing a portable FM system As mentioned on page 5, multipath can occur with portable RF systems. The audio quality of the transmission can decrease with the occurrence of multipath.
10 Design Guide Notes.
11 Design Guide Notes.
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15 LT-800 LT-700 LT-700 Package Contents /7 • Quick Reference Card • Warranty Card • FM Manual Card /LVWHQ&RQÀJXUDWLRQV /7 LT-.
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LT-800 LT-700 /76SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 7KH/7SRUWDEOH)07UDQVPLWWHUVKDOOEHFDSDEOHRIEURDGFDVWLQJ.
18 LT-800 LT-700 LT-700 Block Diagram ANTENNA Companding Q-T echnology Pre-emphasis RF Modulation LCD Display Universal Power Supply (not included) Power Supply CPU Module Up Power charge indicator Red LED Down Power Tip Ring Line Mic Sleeve 115/230V AC 50/60 Hz 7.
19 LT-800 LT-700 LT-700 Quick Reference Articulating Flexible Antenna 3RZHU%XWWRQ7XUQV SRZHU2Q2II PP,QSXW-DFN&RQQHFWD/LVWHQPLFURSKRQHKHUH /RRN/LVWHQ'LVSOD6KRZV transmit level, channel, programming, battery status, and lock status.
20 LT-800 LT-700 LT-700 Setup Instructions Unpack the Product 5HPRYHRXWHUSDFNDJLQJDQGSODVWLFFRYHU,QVSHFWIRUSKVLFDOGDPDJH,IGDPDJHLVDSSDUHQWSOHDVH c.
21 LT-800 LT-700 LT-700 Setup Instructions The microphone sensitivity switch is located inside the battery compartment, to the left of the %$77(5<VHOHFWLRQVZLWFK7KH/7L.
22 LT-800 LT-700 LT-700 Setup Instructions Connect the Microphone The microphone jack is located on top of the unit. Connect the Line Input Cable (Optional) 7KLVFDEOHDOORZVRXWRFRQQHFW.
23 LT-800 LT-700 LT-700 Operating Instructions T urn Unit On Pow er On/O Button When you press the power button, the unit turns on. The LED on top of the unit will be illuminated and the LCD display will be visible. Antenna Positioning NOTE: Be aware that the transmission range could decrease if the antenna is not in an upright position.
24 LT-800 LT-700 Using the MUTE / T ALK switch Slide the switch to the mute position and the microphone audio is muted. When the PLFURSKRQHDXGLRLVPXWHGWKH/('RQWRSRIW.
25 LT-800 LT-700 LT-700 Programming Instructions Program Mode Overview 7KH/7FDQEHSURJUDPPHGWRWUDQVPLWRQDOLPLWHGQXPEHURIFKDQQHOV)RUDSSOLFDWLRQV.
26 LT-800 LT-700 2QFHLQWKHSURJUDPPRGHDIXQFWLRQPHQXLVGLVSODHG)XQFWLRQ)LVGLVSODHGDVGHIDXOW3UHVVLQJWKH channel up or down buttons will scroll through the functions. Pressing the power button will enter that function.
LT-800 LT-700 LT-700 Programming Instructions 7RUHVHWWKHWUDQVPLWWHUWRGHIDXOWVHWWLQJVIROORZWKHVHLQVWUXFWLRQV Reset to def ault settings After the transmitter has been reset, the display will return with defaults present.
28 LT-800 LT-700 Accessories for LT-700 Accessories /$8QLW3RUWDEOH&KDUJLQJ&DUULQJ&DVH /$8QLW3RUWDEOH&DUULQJ&a.
29 LT-800 LT-700 Notes.
30 LT-800 LT-700 Notes.
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35 LR-400/500 LR-400/500 Package Contents /5 • Quick Reference Card • Warranty Card /LVWHQ&RQÀJXUDWLRQV /5 /5.
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LR-400/500 /56SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 7KH/5)0UHFHLYHUVKDOOEHFDSDEOHRIUHFHLYLQJRQZLG.
38 LT-800 LR-400/500 /56SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 7KH/5)0UHFHLYHUVKDOOEHFDSDEOHRIUHFHLYLQJRQ.
39 LR-400/500 LR-400/500 Block Diagram POWER ANTENNA 3.5 mm Connector VOLUME On Off Companding Q-T echnology de-emphasis RF de-modulation LCD Display Universal Power Supply (not included) Power Supply.
40 LT-800 LR-400/500 LR-400-863 Quick Reference 5),QSXW,QGLFDWRU ,QGLFDWHVWKH5)UHFHLYH level. &KDQQHO'LVSOD'LVSODVWKH FKDQQHOWKH/5LVFXUUHQWORQ /RFN,FRQ,QGLFDWHVWKHXQLWLV locked on current channel.
41 LR-400/500 LR-500-863 Quick Reference Articulating Flexible Antenna 6((.%XWWRQ$OORZVWKH user to change channels or lock on a channel. PP2XWSXW-DFN&RQQHFWDOLVWHQHDUSLHFHKHUH /RRN/LVWHQ'LVSOD Shows receive level, channel, programming, battery status, and lock status.
42 LT-800 LR-400/500 LR-400/500 Setup Instructions Remo ve the product 5HPRYHRXWHUSDFNDJLQJDQGSODVWLFFRYHU,QVSHFWIRUSKVLFDOGDPDJH,IGDPDJHLVDSSDUHQW p.
43 LR-400/500 LR-400/500 Setup Instructions Place two AA batteries in the compartment, making note of the battery polarity shown in the battery FRPSDUWPHQWDQGDJDLQYHULILQJWKDWWKH%.
44 LT-800 LR-400/500 LR-400/500 Setup Instructions Receivers are turned on by rotating the volume dial counterclockwise. The red LED on top of the unit will LOOXPLQDWHDQGWKH/&'GLV.
45 LR-400/500 LR-400/500 Operating Instructions T urn Unit On WARNING: Excessive volume may result in hearing damage. V olume knob Rotate the volume knob counterclockwise with an earphone or headset connected to the unit. Antenna Placement NOTE: Be aware that the transmission range could decrease if the antenna is not in an upright position.
46 LT-800 LR-400/500 LR-400/500 Operating Instructions Adjust the v olume control Use the control dial on the top of the unit to adjust the volume to a comfortable level. $QRWKHUZDWRÀQGDFKDQQHORQWKH/5LVWRXVHWKH6((.
LR-400/500 T o lock on a channel NOTE: On the LR-400/500, when the channel is locked, a lock icon will appear underneath “Listen” on the display. Also if the unit is locked, the red LED on top of the receiver will ÁDVKZKHQWKH6((.EXWWRQLVSUHVVHG .
48 LT-800 LR-400/500 LR-400/500 Operating Instructions Squelch Programming Entering Squelch Program Mode Turn unit off 3UHVVDQGKROGWKH6((.EXWWRQZKLOHKROGLQJ6((.EXWWRQGRZQWXUQWKH212))92/80(GLDOWRWXUQ the unit on.
49 LR-400/500 Squelch The purpose of squelch is to mute the audio output of your receiver when the signal from the transmitter is turned off or is too weak to be received.
50 LT-800 LR-400/500 DX/L ocal ';LVWKHQRUPDORSHUDWLRQDOPRGH/RFDOPRGHFDQHIIHFWLYHOOLPLWDQLQWHUPRGXODWLRQDQGRU interference in a busy RF environment. This is done by limiting the amount of RF gain in the receiver.
51 LR-400/500 LR-500 Programming Instructions (LR-500 only) Programming Instructions 7KH/5FDQEHSURJUDPPHGWRUHFHLYHRQDOLPLWHGQXPEHURIFKDQQHOV:KH.
52 LT-800 LR-400/500 Accessories for LR-400/500 Accessories /$ Stereo Headphones /$ Neck Loop /$ Ear Speaker /$ %HKLQGWKH+HDG Stereo Headphones.
53 LR-400/500 Notes.
54 LT-800 LR-400/500 Notes.
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59 Supplementary Supplementary Information Table of Contents Frequency Chart 61 %DWWHU&KDUJLQJ,QIRUPDWLRQ Troubleshooting 63 Frequently Asked Questions 65 .
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61 Supplementary Frequency Chart Frequencies.
62 LT-800 Supplementary Battery Charging Information Charging with a drop-in charger 7RFKDUJHWKHEDWWHULHVXVLQJDGURSLQFKDUJHUVLPSOSODFHWKHXQLWLQWRDVORWLQWKHFKDUJHUDQGFRQQHFW the charger to power.
63 Supplementary Troubleshooting Troubleshooting The unit has no power. 0DNHVXUHWKHXQLWKDVIXOOFKDUJHGEDWWHULHV3UHVVWKH32:(5 EXWWRQ,IWKLVGRHVQRWZRUNWUD different set of batteries.
64 LT-800 Supplementary Troubleshooting Troubleshooting My batteries are not charging 0DNHVXUHRXDUHXVLQJ1L0+EDWWHULHVDQGWKDWWKH%$77(5<6(/(&7VZLWFK.
65 Supplementary Frequently Asked Questions Frequently Asked Questions Q 'R,QHHGDWUDQVPLWWHUIRUHDFKDXGLRVRXUFH" A Yes.
66 LT-800 Supplementary Frequently Asked Questions Frequently Asked Questions Q &DQWKHUHFHLYHUEH´ORFNHGµRQDFKDQQHOLIQHHGHG" A Yes. All Listen receivers can be locked on a single channel. Q :KDWLVWKHEDWWHUOLIHRIDUHFHLYHU" A 20 hours using alkaline batteries.
Supplementary Compliance, Warranty and Contact Information Contacting Listen ,IWHFKQLFDOVHUYLFHLVQHHGHGSOHDVHFRQWDFW/LVWHQ3UHDXWKRUL]DWLRQLVUHTXLUHGEHI.
68 LT-800 Supplementary Notes.
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Printed in the United States of America /LVWHQ7HFKQRORJLHV&RUSRUDWLRQ ® $OO5LJKWV5HVHUYHG Listen Technologies Corporation 14912 Heritagecrest Way %OXIIGDOH8WDK86$ +1.
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