Listen LR 400 Design Manual & Manual Download

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Design Guide

Key Concepts in Designing a Stationary FM System

Mounting Transmitter

7KH/7FDQEHUDFNPRXQWHGLIQHFHVVDU\:LWKWKHXVHRIWKH/LVWHQ/$8QLYHUVDO5DFN0RXQW.LW\RX

can mount one or two transmitters to the standard 19” rack. The rack mounted unit will take 1 ru of space.

Rack Mount with dual units installed.

7KH/$UDFNPRXQWDFFHVVRU\ZLOODOORZ\RXWRSODFH\RXU/$DQWHQQDDWWKHIURQWRIDYLQJ

the antenna in the front will give better reception range.

NOTE: The antenna may need to be remote mounted using the LA-130 Remote Antenna Kit if the

transmitter(s) is rack mounted. If a rack is metal, it is not recommended to have the antenna inside. Also,

the depth of the rack and equipment inside could prevent an antenna from being placed inside.

Rack Mount with single unit installed.

Summary of Contents for LR 400

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Page 3: ...3 8995 Fax support listentech com www listentech com Listen Technologies GmbH Jasminstr 16 905 22 Oberasbach Germany 49 911 955159 0 Tel 49 911 955159 40 Fax www listentech de info listentech de Thank you and enjoy your listening experience HVW UHJDUGV Russell Gentner and the Listen Team LVWHQ V IXOO WLPH WHFKQLFDO VXSSRUW LV SDVVLRQDWH DERXW ZKDW WKH GR DQG RX FDQ GHSHQG RQ WKHP WR VROYH DQ HTXLS...

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Page 5: ...7 6HWXS QVWUXFWLRQV 2SHUDWLQJ QVWUXFWLRQV Accessories 34 Notes 35 5 0 5HFHLYHUV 6SHFLÀFDWLRQV ORFN LDJUDP Quick Reference 48 6HWXS QVWUXFWLRQV 2SHUDWLQJ QVWUXFWLRQV 3URJUDPPLQJ QVWUXFWLRQV 5 RQO Accessories 60 Notes 61 6XSSOHPHQWDU QIRUPDWLRQ DWWHU KDUJLQJ QIRUPDWLRQ Frequency Chart 70 Troubleshooting 71 Frequently Asked Questions 73 RPSOLDQFH DUUDQW DQG RQWDFW QIRUPDWLRQ Notes 76 Stationary FM Ta...

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Page 9: ...3 Design Guide Stationary FM Design Guide Table of Contents Table of Contents 3 Technology Overview 5 System Overview 6 H RQFHSWV LQ HVLJQLQJ DQ 0 6 VWHP Notes 17 ...

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Page 11: ...th between the receiver and the transmitter causing the two RF signals to add out of phase This could occur in areas with 5 UHÁHFWLYH VXUIDFHV VXFK DV IXUQLWXUH ZDOOV RU ÁRRUV 7KH UHVXOW RI PXOWLSDWK LV WKH UHFHLYHU DXGLR FRPLQJ LQ DQG RXW RI squelch when the receiver is moved Portable applications are much more susceptible to multipath than those that are stationary Multipath distortion is often ...

Page 12: ...ource like a CD player MP3 player computer DVD etc Audio will be Connected into the audio inputs of the stationary transmitter Input Source 7 6WDWLRQDU 0 7UDQVPLWWHU 0 QSXW VRXUFH 5 Portable Programmable Display FM Receiver 0 5 Portable Display FM 5HFHLYHU 0 7KH 7 WUDQVPLWWHU PRGXODWHV WKH DXGLR RQ DQ 0 FDUULHU DQG WUDQVPLWV WKH VLJQDO YLD DQ DQWHQQD Transmitter UWLFXODWLQJ QWHQQD 0 QFOXGHG ZLWK 7...

Page 13: ...EH EDFN PRXQWHG RQ WKH unit or remote mounted Antenna LVWHQ RIIHUV WZR GLIIHUHQW SRUWDEOH UHFHLYHUV WKH 5 DQG 5 Receivers QWHQQD LW IRU 5DFN 0RXQW 0 5HPRWH QWHQQD LW 0 5 Portable Programmable Display FM Receiver 0 5 Portable Display FM 5HFHLYHU 0 UWLFXODWLQJ QWHQQD 0 QFOXGHG ZLWK 7UDQVPLWWHU ...

Page 14: ...FM System Input Selection XLR Wiring Input from Balanced Audio Source Unbalanced Audio Source 1 4 Phone Wiring Balanced Tip Ring Sleeve Unbalanced Top Ring Top Ring Sleeve Audio from Balanced Audio Source Unbalanced Audio Source Sleeve Input 1 Connect the audio source s 7KH 7 KDV WZR DXGLR LQSXW RSWLRQV QSXW DQG QSXW QSXW LV D EDODQFHG FRQQHFWLRQ XVLQJ HLWKHU DQ 5 RU õµ SKRQR FRQQHFWRU DQG LQSXW L...

Page 15: ...t Input 2 Connect the audio source s 7KH 7 FDQ DFFRPPRGDWH WZR LQSXWV VLPXOWDQHRXVO ZLWK WKH XVH RI WKH LQSXW OHYHO SRWHQWLRPHWHU When two inputs are present both sets of input level lights will be activated Using Two inputs Mix Level 7KH PL OHYHO DFWV DV WKH PDVWHU WUDQVPLWµ FRQWURO W ZLOO LQFUHDVH WKH WUDQVPLW JDLQ RQ WKH PL µ RI WKH WZR OHYHOV LI WZR OHYHOV DUH LQ XVH QSXW HYHO QRE Mix level ad...

Page 16: ...DQG IURP RWKHU HTXLSPHQW VXFK DV D FRPSXWHU Listen s LT 800 863 offers 17 different channels to choose from LVWHQ V 7 RIIHUV GLIIHUHQW FKDQQHOV WR FKRRVH IURP 7KLV LQFUHDVHV WKH FKDQFH RX OO ÀQG DQ LQWHUIHUHQFH IUHH FKDQQHO 7KH EHVW ZD WR FKHFN IRU LQWHUIHUHQFH LV WR WXUQ D UHFHLYHU RQ DQG SUHVV WKH 6 EXWWRQ I WKHUH DUH DQ FKDQQHOV ZLWK LQWHUIHUHQFH WKH UHFHLYHU ZLOO ÀQG WKHVH FKDQQHOV R QRW WUDQV...

Page 17: ...ntenna 7KH 5HPRWH QWHQQD LW FRQQHFWV WR WKH 7 DQG FDQ EH SODFHG DZD IURP WKH WUDQVPLWWHU IRU EHWWHU UDQJH W DOVR DOORZV WKH XQLW WR EH UDFN PRXQWHG ZLWK WKH DQWHQQD UHPRWHO XVLQJ WKH 8QLYHUVDO 5DFN 0RXQWLQJ LW 7KH FRPHV ZLWK RI EODFN FRD LDO FDEOH 5 ATTENTION Long cable runs can result in signal degradation due to the loss characteristics of the cable Minimize cable runs as much as possible or use...

Page 18: ...esigning and installing your system keep in mind that the location of both the transmitting and UHFHLYLQJ DQWHQQDV LV FULWLFDO WR PD LPL H EURDGFDVW UDQJH OLPLQDWH RU PLQLPL H REVWUXFWLRQV EHWZHHQ WKH WUDQVPLWWLQJ DQG UHFHLYLQJ DQWHQQD 0LQLPL H WKH GLVWDQFH EHWZHHQ WKH WUDQVPLWWLQJ DQG UHFHLYLQJ DQWHQQDV Move transmitting and receiving antennas away from metal or conductive objects Antenna Placeme...

Page 19: ...ation Orient both transmitting and receiving antennas vertically RF Power switch 3RVLWLRQ WKH 5 3RZHU VZLWFK RQ WKH EDFN RI WKH 7 WR IXOO 5 3RZHU XQOHVV ORZHU SRZHU LV QHFHVVDU Cable Length HHS FRD LDO FDEOH IURP WUDQVPLWWHU WR DQWHQQD DV VKRUW DV SRVVLEOH RF Power Switch ...

Page 20: ...th dual units installed 7KH UDFN PRXQW DFFHVVRU ZLOO DOORZ RX WR SODFH RXU DQWHQQD DW WKH IURQW RI WKH UDFN DYLQJ the antenna in the front will give better reception range NOTE The antenna may need to be remote mounted using the LA 130 Remote Antenna Kit if the transmitter s is rack mounted If a rack is metal it is not recommended to have the antenna inside Also the depth of the rack and equipment...

Page 21: ...LQÀQLWH QXPEHU RI transmitters operating in this scenario However to reduce the possibility of the receiver accidentally receiving LQWHUIHULQJ WUDQVPLVVLRQV XVH WKH IROORZLQJ JXLGH OLQHV 5HGXFH WKH WUDQVPLVVLRQ SRZHU RQ WKH UHDU RI WKH 7 6WDWLRQDU 7UDQVPLWWHU WR WKH ORZHVW OHYHO SRVVLEOH Get the transmitting antenna as close to the receivers as possible QFUHDVH WKH VTXHOFK WKUHVKROG RQ WKH UHFHLYH...

Page 22: ...XHQFLHV 6SDFH WKH DQWHQQDV DW OHDVW RQH ZDYH OHQJWK IURP HDFK RWKHU ZDYH OHQJWK DW 0 LV FP LQ Q WKHVH DSSOLFDWLRQV LW ZRXOG EH EHQHÀFLDO WR XVH WKH 5 3RUWDEOH 3URJUDPPDEOH LVSOD 0 5HFHLYHU 0 WR ORFN RXWµ DQ XQZDQWHG FKDQQHOV 7KH UHFHLYHU ZRXOG RQO VHH WKH IUHTXHQFLHV FXUUHQWO EHLQJ used within the room DQG RFDO PRGH FDQ EH XVHG IRU WKH UHFHLYHU WR 6 DQG ÀQG RQO WKH VWURQJHVW VLJQDOV Meeting partic...

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Page 29: ... Cord Quick Reference Card Warranty Card Manual Card LVWHQ RQÀJXUDWLRQV 7 1RUWK PHULFD 7 VLD 8 7 XUR LT 800 User s Manual Table of Contents 6SHFLÀFDWLRQV ORFN LDJUDP Quick Reference 27 6HWXS QVWUXFWLRQV 2SHUDWLQJ QVWUXFWLRQV Accessories 34 Notes 35 7 6WDWLRQDU 0 7UDQVPLWWHU 12 VDC Power Supply UWLFXODWLQJ QWHQQD 0 ...

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Page 31: ...nel 2 phono connectors unbalanced 10 dBU nominal output level 19dbu maximum impedance 10 ohms Headphone Output Monitor Front Panel One 3 5 mm stereo connector unbalanced adjustable output level 7dbu maximum impedance 10 ohms 100mW 32ohms Controls Front Panel Power Test Tone on off Channel up down Input Levels Mix Level Contour Monitor volume control Rear Panel Input 1 Level Line Mic Mic Phantom Po...

Page 32: ...utton Front Panel Input Level Select Mic Phantom Pwr Mic Line ANTENNA 12VDC RF POWER INPUT 1 INPUT 2 MIX OUTPUT TEST TONE CONTOUR PROCESS MIX LEVEL MONITOR 115 230VAC 50 60 Hz 12VDC 1 3A Functions controlled by the CPU Module POWER On Line Volume Down Compression Ratio internal ajustment Female XLR 1 4 Combo Connector 1 Sleeve 3 Ring 2 Tip BNC Low High Mid Off On Off Green LED Input 2 VU Meter MIX...

Page 33: ...ick reference 0RQLWRU DFN Plug in a headset to monitor audio 0L OHYHO GMXVWV PL HG audio levels Channel Select 8S DQG RZQ Use to select channel XWWRQV DOVR used for programming functions RQWRXU TXDOL DWLRQ adjustment boosts or cuts high frequencies RF Antenna 2XWSXW 1 connector for DQWHQQD RKP 5 3RZHU HYHO Low med or high RF power 3RZHU QSXW RQQHFW SRZHU VXSSO LQFOXGHG KHUH XGLR 2XWSXWV QSXW DQG i...

Page 34: ...KH RSWLRQDO UDFN PRXQW NLW SDUW DFFRUGLQJ WR WKH instructions included with the kit Mount LT 800 s in Rack if desired 3 Connect antenna to rear of transmitter remotely or rack mount Connect Antenna Rack Mount with dual units installed Rack Mount with single unit installed 4 Plug the power supply into the power connector on the back panel and then plug the power supply LQWR DQ RXWOHW 2QO XVH D LVWH...

Page 35: ...R VRXUFH V WR RQH RU ERWK DXGLR LQSXW FRQQHFWLRQV QSXW RIIHUV D FKRLFH RI EDODQFHG 5 RU õµ SKRQR FRQQHFWRU 3OXJ RXU PLFURSKRQH LQWR QSXW DQG PRYH WKH LQSXW VHOHFW VZLWFK WR 0LF IRU G QDPLF PLFURSKRQHV RU 0LF 3 3RZHU IRU FRQGHQVHU PLFURSKRQHV 3OXJ RXU EDODQFHG RU XQEDODQFHG DXGLR VRXUFH LQWR QSXW 8VH WKH IROORZLQJ GLDJUDP Input 1 6B 3OXJ RXU XQEDODQFHG DXGLR VRXUFH LQWR QSXW DQG VHOHFW WKH DXGLR OH...

Page 36: ...and DOWN buttons 3 Lock on Channel Once you determine your transmit channel you can lock the transmitter on that channel To lock a channel hold the Channel Select Up button for 3 seconds until the padlock icon appears on the display To unlock repeat this process and the padlock icon will disappear Channel select up and down buttons 3RZHU XWWRQ ...

Page 37: ...nput level until the left 98 PHWHU V RFFDVLRQDOO LOOXPLQDWH WKH UHG V OOXPLQDWLRQ RI WKH UHG V LQGLFDWHV WKH XQLW LV LQ OLPLWLQJ LPLWLQJ LV UHTXLUHG VR WKDW WKH XQLW GRHV QRW RYHU PRGXODWH WKH WUDQVPLW VLJQDO I RX GRQ W ZDQW DQ DXGLR OLPLWLQJ WR RFFXU PDNH VXUH WKH UHG V QHYHU LOOXPLQDWH I RX ZDQW D highly limited signal turn the audio gain up so the red LEDs illuminate often 4 1 Adjusting Audio L...

Page 38: ...e is mostly music 7KH FRQWRXU NQRE DGMXVWV WKH UHODWLYH HTXDOL DWLRQ RI WKH XQLW 7KLV HTXDOL DWLRQ ERRVWV RU FXWV IUHTXHQFLHV DERYH N Adjust Mix Level Adjust the mix level until the right VU meter occasionally illuminates the UHG 7KLV LV WKH OHYHO DGMXVWPHQW IRU WKH FRPELQHG RXWSXW IURP QSXW DQG QSXW LT 800 Operating Instructions 0L HYHO GMXVWPHQW QRE 2 3 RQWRXU QRE ...

Page 39: ...g or lowering the signal level accordingly to provide a consistent sound output level This feature should be used in applications where a consistent sound level is important and the input levels vary substantially Typically you would QRW ZDQW WR HQJDJH WKH 3URFHVV 0RGH ZKHQ D VSHDNHU V HPSKDVLV LV FULWLFDO WR WKH PHVVDJH WKH DUH conveying LT 800 Operating Instructions 4 Process ...

Page 40: ...RWH QWHQQD LW 0 Assistive Listening 1RWLÀFDWLRQ 6LJQDJH LW Accessories for LT 800 863 Accessories QWHQQD LW IRU 5DFN 0RXQW 0 8QLYHUVDO 5DFN 0RXQWLQJ LW 9 3RZHU KDUJLQJ Supply for FM Portable Products 1RUWK PHULFD VLD 8 XUR ...

Page 41: ...35 Design Guide Notes ...

Page 42: ...36 LT 800 LT 800 Notes ...

Page 43: ...37 LT 800 LT 800 Notes ...

Page 44: ...38 LT 800 LT 800 Notes ...

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Page 49: ...HQ RQÀJXUDWLRQV 5 5 LR 400 500 User s Manual Table of Contents 6SHFLÀFDWLRQV ORFN LDJUDP Quick Reference 48 6HWXS QVWUXFWLRQV 2SHUDWLQJ QVWUXFWLRQV 3URJUDPPLQJ QVWUXFWLRQV 5 RQO Accessories 60 Notes 61 5 Portable Display FM Receiver 0 5 Portable Programmable Display FM Receiver 0 ...

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Page 51: ... CE ETSI RoHS Audio System Frequency Response 50 Hz 15 kHz 3 dB System Signal to Noise Ratio 70 dB A Weighted System Distortion 2 total harmonic distortion THD at 80 deviation Output 3 5 mm connector unbalanced 0dBu nominal output level 16 mW maximum impedance 32 Ohms Controls User Controls Channel up down SEEK volume Set up Controls battery compartment Alkaline NiMH battery switch Programming Cha...

Page 52: ...tic on loss of RF signal Compliance CE ETSI RoHS Audio System Frequency Response 50 Hz 15 kHz 3 dB System Signal to Noise Ratio 70 dB A Weighted System Distortion 2 total harmonic distortion THD at 80 deviation Output 3 5 mm connector unbalanced 0dBu nominal output level 16 mW maximum impedance 32 Ohms Controls User Controls Channel up down SEEK volume Set up Controls battery compartment Alkaline ...

Page 53: ...tor VOLUME On Off Companding Q Technology 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 230VAC 50 60 Hz 2 AA Batteries ALkaline or NiMH NiMH Alkaline ...

Page 54: ...ntenna 6 XWWRQ OORZV WKH user to change channels or lock on a channel RRN LVWHQ LVSOD 6KRZV receive level channel battery status and lock status DWWHU RPSDUWPHQW 3ODFH EDWWHULHV LQ FRPSDUWPHQW H VXUH WR IROORZ SRODULW pattern 2Q 2II DQG 9ROXPH RQWURO LDO DWWHU 6HOHFW 6ZLWFK KRRVH the type of batteries being used 3RZHU KDUJLQJ 3RUW Front Door Lock KHQ OLW LQGLFDWHV XQLW KDV SRZHU PP 2XWSXW DFN RQQH...

Page 55: ...RPSDUWPHQW H VXUH WR IROORZ SRODULW pattern 2Q 2II DQG 9ROXPH RQWURO LDO DWWHU 6HOHFW 6ZLWFK KRRVH the type of batteries being used 3RZHU KDUJLQJ 3RUt Front Door Lock KHQ OLW LQGLFDWHV XQLW KDV SRZHU 5 QSXW QGLFDWRU QGLFDWHV WKH RF receive level KDQQHO LVSOD LVSOD V WKH FKDQQHO WKH 5 LV FXUUHQWO RQ RFN FRQ QGLFDWHV WKH XQLW LV locked on current channel 2 QGLFDWHV ZKLOH LQ SURJUDPPLQJ PRGH WKH VSHF...

Page 56: ...SXOO WKH GRRU GRZQZDUG 2 127 SODFH EDWWHULHV LQ WKH unit at this time 7ZR W SHV RI EDWWHULHV PD EH XVHG 7KH XQLW LV VKLSSHG ZLWK WKH VZLWFK LQ WKH ONDOLQH SRVLWLRQ Use a pen or small screwdriver to select the battery type Select Battery Type 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 ...

Page 57: ...DOO EDWWHU W SHV RWKHU WKDQ 1L0 Place Batteries in Unit NOTE Listen provides industrial strength AA alkaline batteries part number LA 361 and high performance AA Nickel Metal Hydride batteries part number LA 362 These may be purchased from your Listen dealer Your headset or earphone will connect to the jack on the top of the unit Either mono or stereo connectors may be used with a Listen receiver ...

Page 58: ...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 QRW PDNH VXUH RX KDYH LQVWDOOHG WKH EDWWHU ies correctly and that you are using fully charged batteries Turn the Unit On 6 ...

Page 59: ...nna Placement NOTE Be aware that the transmission range could decrease if the antenna is not in an upright position Antenna Position Raise the antenna to the upright position When the antenna if fully extended it will click into position Select a Channel Select the channel using channel select buttons Select the channel to match the transmission channel by pressing the UP and DOWN buttons on the r...

Page 60: ...WWRQ When you do this the Listen receiver looks for the next active channel 6RPHWLPHV WKH XQLW ZLOO PLVWDNH LQWHUIHUHQFH IRU D UHDO EURDGFDVW VLJQDO I RX JHW LQWHUIHUHQFH SUHVV WKH 6 EXWWRQ DJDLQ 7KH XQLW PD VWRS RQ D channel that is close to the actual broadcast channel in which case the FKDQQHO ZLOO VRXQG QRLV RU GLVWRUWHG 6LPSO SUHVV 6 DJDLQ XQWLO RX ÀQG WKH clearest operating channel Select th...

Page 61: ... VHFRQGV WR ORFN D UHFHLYHU RQWR WKH FXUUHQWO WXQHG channel Press and hold the button again to unlock When locked the LED on top of WKH XQLW ZLOO ÁDVK ZKHQ RX SUHVV WKH 6 EXWWRQ LR 400 500 Operating Instructions Locking the Receiver on One Channel 7KH XQLW FDQ EH HOHFWURQLFDOO ORFNHG RQ RQH FKDQQHO VR WKDW LW ZLOO QRW FKDQJH FKDQQHOV HYHQ LI WKH 6 µ EXWWRQ LV SUHVVHG W LV UHFRPPHQGHG WR ORFN WKH U...

Page 62: ...l be heard but you can have a longer range before the unit will squelch 2QFH WKH GHVLUHG VTXHOFK VHWWLQJ LV IRXQG SUHVV 6 WR H LW WKH VTXHOFK SURJUDPPLQJ PRGH Squelch setting 00 is no squelch this setting disables the squelching capabilities of the receiver Squelch setting 20 is maximum squelch sensitivity when on this setting there must be a very strong and stable RF signal for the unit to not en...

Page 63: ... D FODVVURRP VHW WKH VTXHOFK VHWWLQJ KLJK VR WKDW ZKHQ WKH transmitter is turned off it immediately squelches and ignores transmitters in other rooms If in an area that has a lot of interference set the squelch high I RX DUH LQ DQ DUHD WKDW KDV D ORW RI LQIHUHQFH RX PD ZDQW WR set the squelch setting to a high setting to ensure the interference is not picked up by the receiver Squelch Setting Sque...

Page 64: ... channel down button and turn the unit on The LCD shall indicate the current setting D or L Pressing the down button will toggle between Local and DX Mode D or L Pressing seek will enter the setting and return to normal operational mode LR 400 500 Operating Instructions 7R UHVHW WKH UHFHLYHU WR GHIDXOW VHWWLQJV IROORZ WKHVH LQVWUXFWLRQV Reset to default settings Resetting to defaults Local DX Afte...

Page 65: ...S DQG GRZQ EXWWRQV ZLOO VFUROO WKURXJK channels Pressing the seek button will toggle between available and locked out for that channel When a chan QHO LV ORFNHG RXW WKH 2 RQ WKH VKDOO EH GLVSOD HG To enter program mode To program When no button is pressed for 10 seconds the program menu is exited altogether regardless of whether a IXQFWLRQ LV HQWHUHG RU QRW 7R H LW RXW RI WKH SURJUDP PHQX RU IXQFW...

Page 66: ...LW 3RUWDEOH KDUJLQJ DUU LQJ DVH 8QLW 3RUWDEOH DUU LQJ DVH RQÀJXUDEOH DUU LQJ DVH 8QLW 3RUWDEOH KDUJLQJ DUU LQJ DVH 8QLW 3RUWDEOH DUU LQJ DVH 8QLW 3RUWDEOH KDUJLQJ DUU LQJ DVH Z 5HPRYDEOH LG 8QLW 3RUWDEOH KDUJLQJ DUU LQJ DVH Z 5HPRYDEOH LG 8QLW 3RUWDEOH KDUJLQJ DUU LQJ DVH Z 5HPRYDEOH LG High Capacity AA Alkaline DWWHULHV Assistive Listening 1RWLÀFDWLRQ 6LJQDJH LW Rechargeable AA NiMH DWWHULHV ...

Page 67: ...61 LR 400 500 Notes ...

Page 68: ...62 LT 800 LR 400 500 Notes ...

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Page 73: ...67 Supplementary Supplementary Information Table of Contents DWWHU KDUJLQJ QIRUPDWLRQ Frequency Chart 70 Troubleshooting 71 Frequently Asked Questions 73 RPSOLDQFH DUUDQW DQG RQWDFW QIRUPDWLRQ Notes 76 ...

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Page 75: ...rom heat sources and direct sunlight The Listen receivers are unique because they have SmartCharge chargers built in When any of these units are placed into a Listen charging case NiMH batteries will be charged 6PDUW KDUJH XVHV D SXOVH FKDUJLQJ ZKLFK JUHDWO H WHQGV WKH OLIH RI 1LFNHO 0HWDO GULGH 1L0 EDWWHULHV 7KH HQWLUH FKDUJLQJ SURFHVV takes about 13 hours Listen recommends that you allow the cha...

Page 76: ...70 LT 800 Supplementary Frequency Chart Frequencies ...

Page 77: ...H FRQQHFWLRQV IURP WKH DXGLR VRXUFH WR WKH 7 I RX FDQ WU WR XVH D EDODQFHG DXGLR VRXUFH WKLV ZLOO UHGXFH WKH FKDQFH RI FUHDWLQJ KXP RQQHFW D JURXQG ZLUH IURP WKH 7 WR JURXQG DQG RU WR WKH ground of the source audio There is a tone 7KH 7HVW 7RQH EXWWRQ KDV EHHQ SUHVVHG LWV OLJKW LV RQ 3XVK WKH 7HVW 7RQH EXWWRQ WR WXUQ RII WKH WRQH The Audio Input 1 sounds tinny I RX DUH XVLQJ DQ XQEDODQFHG DXGLR VR...

Page 78: ...RX FDQ RUGHU D UDFN PRXQW NLW IURP Listen which offers a security cover that will limit access to the unit Can I use another manfactures receivers with the LT 800 863 LVWHQ V 0 HTXLSPHQW LV QRW FRPSDWLEOH ZLWK DQ RWKHU 0 HTXLSPHQW Several transmitters are operating in the same environment RU WKLV RX OO QHHG WR FKRRVH RXU WUDQVPLWWLQJ IUHTXHQFLHV FDUHIXOO 6HH SDJHV IRU PRUH details Can I have two a...

Page 79: ...HUV 7KH 5 LV SURJUDPPDEOH DQG can be set to just those channels you need Q RZ PDQ FKDQQHOV FDQ SURJUDP LQWR WKH 5 A 1 to 17 The receiver has 17 channels and you can program it to have just the channels you want WR KDYH DFFHVV WR W FDQ EH D WZR FKDQQHO UHFHLYHU D FKDQQHO UHFHLYHU RU NHHS DOO Q RZ PDQ UHFHLYHUV FDQ KDYH LQ D V VWHP A As many as you need the number is endless Q KDW LV WKH GLIIHUHQFH ...

Page 80: ...ed Questions Frequently Asked Questions Q DQ WKH UHFHLYHU EH ORFNHGµ RQ D FKDQQHO LI QHHG WKDW A Yes All Listen receivers can be locked Q KDW LV WKH EDWWHU OLIH RI D UHFHLYHU A 20 hours using alkaline batteries 10 hours using NiMH batteries ...

Page 81: ...use and conditions for one year from date of purchase LVWHQ ZDUUDQWV LWV KDUJLQJ DUU LQJ DVHV WR EH IUHH IURP GHIHFWV LQ ZRUNPDQVKLS DQG PDWHULDO XQGHU QRUPDO XVH DQG conditions for one year from date of purchase All other products and accessories are warranted for 90 days from date of purchase This warranty is only available to the original end purchaser of the product and cannot be transferred W...

Page 82: ...76 LT 800 Supplementary Notes ...

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Page 84: ...en Technologies Corporation 14912 Heritagecrest Way OXIIGDOH 8WDK 8 6 1 801 233 8992 1 800 330 0891 North America 1 801 233 8995 Fax www listentech com info listentech com Listen Technologies GmbH Jasminstr 16 905 22 Oberasbach Germany 49 911 955159 0 0 49 911 955159 40 Fax www listentech de info listentech de ...

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Listen LR 400, Design Manual & Manual

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