Listen Technologies 863.050 manuel d'utilisation

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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 performance because we care that you are completely VDWLVÀHG7KDW·VZKZHLQGHSHQGHQWOFHUWLIWKHPWRWKHKLJKHVWTXDOLW standar[...]

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Design Guide LT-700 LR-400/500 Supplementary Design Guide FM Technology Overview 5 System Overview 6 .H&RQFHSWVLQ'HVLJQLQJDQ)06VWHP  N o t e s 1 0 /73RUWDEOH)07UDQVPLWWHU 6SHFLÀFDWLRQV   %ORFN'LDJUD[...]

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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&RQFHSWVLQ'HVLJQLQJDQ)06VWHP  N o t e s 1 0[...]

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5 Design Guide Frequency Modulation (FM) Technology Overview )UHTXHQFPRGXODWLRQ)0LVDPHDQVRIWUDQVPLWWLQJDXGLRXVLQJHOHFWURPDJQHWLFZDYHV This same technology is used by local FM radio stations to broadcast voice and music. FM signals can travel WKURXJKPRVWEDUULHUV²ZDOOVÁRRUVDQG[...]

6 Design Guide System Overview 7KHUHDUHWKUHHPDLQSDUWVWRD3RUWDEOH)06VWHP²,QSXWVRXUFHWUDQVPLWWHUDQGUHFHLYHU $PLFURSKRQHLVWKHPRVWFRPPRQLQSXWVRXUFHIRUWKH/7WUDQVPLWWHUDOWKRXJKWKH/7FDQWUDQVPLW WZRDXGLRLQSXWVDW?[...]

 Design Guide System Overview Listen offers two different portable receivers. Rec eivers /5 Portable Programmable 'LVSOD)05HFHLYHU0+] /5 Portable Display FM 5HFHLYHU0+] 7KH/7PRGXODWHVWKHDXGLRRQDQ)0FDU[...]

8 Design Guide The range of a portable transmission will vary from one application to another. There are many different REVWUXFWLRQVWKDWFRXOGPLQLPL]HWKHUDQJH,QPRVWDSSOLFDWLRQVWKHUDQJHZLOOEHDSSUR[LPDWHODVVKRZQ EHORZ3 3RZHU/HYHOUHIHUWRSDJHIRUSURJUDPPLQ[...]

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. Here are a few potential improvements that FDQKHOSLIPXOWLSDWKWDNHVSODFH Eliminating Multipath Squelch Squelching th[...]

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-700 User’s Manual Table of Contents 6SHFLÀFDWLRQV   %ORFN'LDJUDP ?[...]

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 LT-800 LT-700 /76SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 7KH/7SRUWDEOH)07UDQVPLWWHUVKDOOEHFDSDEOHRIEURDGFDVWLQJRQFKDQQHOV&KDQQHOWXQLQJVKDOOEHFDSDEOHRIEHLQJ ORFNHG7KHWUDQVPLWWHUVKDOOKDYHD615RI[...]

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 7.5 VDC (2) AA Batteries ALkaline or NiMH NiMH Alkaline 3 VDC[...]

19 LT-800 LT-700 LT-700 Quick Reference Articulating Flexible Antenna 3RZHU%XWWRQ7XUQV SRZHU2Q2II PP,QSXW-DFN&RQQHFWD/LVWHQPLFURSKRQHKHUH /RRN/LVWHQ'LVSOD6KRZV transmit level, channel, programming, battery status, and lock status. %DWWHU&RPSDUWPHQW3OD[...]

20 LT-800 LT-700 LT-700 Setup Instructions Unpack the Product 5HPRYHRXWHUSDFNDJLQJDQGSODVWLFFRYHU,QVSHFWIRUSKVLFDOGDPDJH,IGDPDJHLVDSSDUHQWSOHDVH contact the dealer from which the product was purchased or Listen Technologies &RUSRUDWLRQWHFKQLFDOVXSSRUWIRUDVVLVWDQFHUHIHUW[...]

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<VHOHFWLRQVZLWFK7KH/7LVVKLSSHGZLWKWKLVVZLWFKLQWKHFHQWHU0('SRVLWLRQ/LVWHQ UHFRPPHQGVWKHIROORZLQJVHWWLQJVIRURXU?[...]

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) 7KLVFDEOHDOORZVRXWRFRQQHFWD79&'SODHURURWKHUHTXLSPHQWWRWKH/77RGRWKLVRXPXVW RUGHUWKH/LVWHQ[...]

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. Raise t[...]

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 PLFURSKRQHDXGLRLVPXWHGWKH/('RQWRSRIWKHXQLWÁDVKHVUDSLGO6OLGHWKHVZLWFKEDFNWRWKHWDON SRVLWLRQDQGWKHPLFURSKRQHDXGLRZLOOUHWXUQWRW[...]

25 LT-800 LT-700 LT-700 Programming Instructions Program Mode Overview 7KH/7FDQEHSURJUDPPHGWRWUDQVPLWRQDOLPLWHGQXPEHURIFKDQQHOV)RUDSSOLFDWLRQVZKHUHXVHUVDUH UHTXLUHGWRVHOHFWDFKDQQHOVXFKDVFODVVURRPVRUODQJXDJHLQWHUSUHWDWLRQDSSOLFDWLRQDQG?[...]

26 LT-800 LT-700 2QFHLQWKHSURJUDPPRGHDIXQFWLRQPHQXLVGLVSODHG)XQFWLRQ)LVGLVSODHGDVGHIDXOW3UHVVLQJWKH channel up or down buttons will scroll through the functions. Pressing the power button will enter that function. )&KDQQHO/RFNRXW1RFKDQQHOV[...]

 LT-800 LT-700 LT-700 Programming Instructions 7RUHVHWWKHWUDQVPLWWHUWRGHIDXOWVHWWLQJVIROORZWKHVHLQVWUXFWLRQV Reset to def ault settings After the transmitter has been reset, the display will return with defaults present. After the transmitter has been reset Press and hold the Up and Down channel buttons while [...]

28 LT-800 LT-700 Accessories for LT-700 Accessories /$8QLW3RUWDEOH&KDUJLQJ&DUULQJ&DVH /$8QLW3RUWDEOH&DUULQJ&DVH  /$8QLW3RUWDEOH&KDUJLQJ&DUULQJ&DVH /$8QLW3RUWDEOH&DU[...]

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 LR-400/500 User’s Manual Table of Contents 6SHFLÀFDWLRQV   %ORFN'LDJUDP?[...]

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 LR-400/500 /56SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 7KH/5)0UHFHLYHUVKDOOEHFDSDEOHRIUHFHLYLQJRQZLGHEDQGFKDQQHOVZLWKD615RI G%RUJUHDWHU7KHGHYLFHVKDOOEHDEOHWREHORFNHGRQDVLQJOH?[...]

38 LT-800 LR-400/500 /56SHFLÀFDWLRQV $UFKLWHFWXUDO6SHFLÀFDWLRQ 7KH/5)0UHFHLYHUVKDOOEHFDSDEOHRIUHFHLYLQJRQZLGHEDQGFKDQQHOVZLWKD615RI G%RUJUHDWHU7KHUHFHLYHUVKDOOEHSURJUDPPDEOHWRHOHFWURQLFDOOORF[...]

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 CPU Module Up Power charge indicator Red LED Down Seek Tip Ring Sleeve 115/230V AC 50/60 Hz (2) AA Batteries ALkaline or NiMH NiMH Alkaline[...]

40 LT-800 LR-400/500 LR-400-863 Quick Reference 5),QSXW,QGLFDWRU ,QGLFDWHVWKH5)UHFHLYH level. &KDQQHO'LVSOD'LVSODVWKH FKDQQHOWKH/5LVFXUUHQWORQ /RFN,FRQ,QGLFDWHVWKHXQLWLV locked on current channel. %DWWHU/HYHO,QGLFDWRU Articulating Flexi[...]

41 LR-400/500 LR-500-863 Quick Reference Articulating Flexible Antenna 6((.%XWWRQ$OORZVWKH user to change channels or lock on a channel. PP2XWSXW-DFN&RQQHFWDOLVWHQHDUSLHFHKHUH /RRN/LVWHQ'LVSOD Shows receive level, channel, programming, battery status, and lock status. %D[...]

42 LT-800 LR-400/500 LR-400/500 Setup Instructions Remo ve the product 5HPRYHRXWHUSDFNDJLQJDQGSODVWLFFRYHU,QVSHFWIRUSKVLFDOGDPDJH,IGDPDJHLVDSSDUHQW please contact the dealer from which the product was purchased or Listen Technologies Corpora  WLRQWHFKQLFDOVXSSRUWIRUDVVLVWDQFHU[...]

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 FRPSDUWPHQWDQGDJDLQYHULILQJWKDWWKH%$77(5<6(/(&7VZLWFKLVLQWKHFRUUHFWSRVLWLRQIRUWKH EDWWHULHVRXDUHXVLQJ$ONDOLQHVKRXOGEHVH[...]

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 LOOXPLQDWHDQGWKH/&'GLVSODVKRXOGLOOXPLQDWH,IWKHGRQR WPDNHVXUHRXKDYHLQVWDOOHGWKHEDWWHU ies correctly and that you are using[...]

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. Antenn[...]

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. $QRWKHUZDWRÀQGDFKDQQHORQWKH/5LVWRXVHWKH6((.EXWWRQ When you do this, the Listen receiver looks for the nex[...]

 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 ÁDVKZKHQWKH6((.EXWWRQLVSUHVVHG . Press and hold the SEEK button for 5 seconds 3UHVVDQGKROGWKH6[...]

48 LT-800 LR-400/500 LR-400/500 Operating Instructions Squelch Programming Entering Squelch Program Mode Turn unit off 3UHVVDQGKROGWKH6((.EXWWRQZKLOHKROGLQJ6((.EXWWRQGRZQWXUQWKH212))92/80(GLDOWRWXUQ the unit on. 5HOHDVHWKH6((.EXWWRQZKHQWKH/LVWHQQDPHGLVDSSHDUV?[...]

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. 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 GLIIHUHQW5)VLJQDOVWUHQJWKV[...]

50 LT-800 LR-400/500 DX/L ocal ';LVWKHQRUPDORSHUDWLRQDOPRGH/RFDOPRGHFDQHIIHFWLYHOOLPLWDQLQWHUPRGXODWLRQDQGRU interference in a busy RF environment. This is done by limiting the amount of RF gain in the receiver. When local mode is selected, the range of the receiver is compromised. Depending[...]

51 LR-400/500 LR-500 Programming Instructions (LR-500 only) Programming Instructions 7KH/5FDQEHSURJUDPPHGWRUHFHLYHRQDOLPLWHGQXPEHURIFKDQQHOV:KHQDQ DSSOLFDWLRQUHTXLUHVWKHXVHRIPRUHWKDQRQHFKDQQHOLHDFODVVURRPRUODQJXDJH LQWHUSUHWDWLRQ?[...]

52 LT-800 LR-400/500 Accessories for LR-400/500 Accessories /$ Stereo Headphones /$ Neck Loop /$ Ear Speaker /$ %HKLQGWKH+HDG Stereo Headphones /$8QLW3RUWDEOH&KDUJLQJ&DUULQJ&DVH /$8QLW3RUWDEOH&DUULQJ&[...]

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 &RPSOLDQFH:DUUDQWDQG&RQWDFW,QIRUPDWLRQ   N o t e s 6 8[...]

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61 Supplementary Frequency Chart Frequencies[...]

62 LT-800 Supplementary Battery Charging Information Charging with a drop-in charger 7RFKDUJHWKHEDWWHULHVXVLQJDGURSLQFKDUJHUVLPSOSODFHWKHXQLWLQWRDVORWLQWKHFKDUJHUDQGFRQQHFW the charger to power. Make sure the unit is fully seated in its slot. IMPORTANT: DO NOT ATTEMPT TO CHARGE ANY [...]

63 Supplementary Troubleshooting Troubleshooting The unit has no power.   0DNHVXUHWKHXQLWKDVIXOOFKDUJHGEDWWHULHV3UHVVWKH32:(5 EXWWRQ,IWKLVGRHVQRWZRUNWUD different set of batteries. Make sure the batteries are installed correctly. There is no audio.  0DNHVXUHWKH[...]

64 LT-800 Supplementary Troubleshooting Troubleshooting My batteries are not charging  0DNHVXUHRXDUHXVLQJ1L0+EDWWHULHVDQGWKDWWKH%$77(5<6(/(&7VZLWFKLQVLGHWKHEDWWHU FRPSDUWPHQWLVVHWWRWKH1L0+SRVLWLRQ0DNHVXUHWKHEDWWHUL HVDUHLQVWDOOHGFRUUHFWO?[...]

65 Supplementary Frequently Asked Questions Frequently Asked Questions Q 'R,QHHGDWUDQVPLWWHUIRUHDFKDXGLRVRXUFH" A Yes. To transmit two different frequencies, there must be two separate transmitters. Q :KDWLVWKHUDQJHRIWKH/77UDQVPLWWHU" A  7KHUDQJHRIWKH/7?[...]

66 LT-800 Supplementary Frequently Asked Questions Frequently Asked Questions Q &DQWKHUHFHLYHUEH´ORFNHGµRQDFKDQQHOLIQHHGHG" A Yes. All Listen receivers can be locked on a single channel. Q  :KDWLVWKHEDWWHUOLIHRIDUHFHLYHU" A 20 hours using alkaline batteries. 10 hours using NiMH [...]

 Supplementary Compliance, Warranty and Contact Information Contacting Listen ,IWHFKQLFDOVHUYLFHLVQHHGHGSOHDVHFRQWDFW/LVWHQ3UHDXWKRUL]DWLRQLVUHTXLUHGEHIRUHUHWXUQLQJ/LVWHQSURGXFWV,ISURGXFWVZHUH damaged in shipment, please contact the carrier, then contact Listen for replacement [...]

68 LT-800 Supplementary Notes[...]

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