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Telex SR-400 manual

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Table of contents for the manual

  • Page 1

    Telex Op er at ing In struc tions ST300 Transmitter SR-400 17 Channel Receiver SR-50 Single Channel Receiver[...]

  • Page 2

    [...]

  • Page 3

    INTRODUCTION WHAT IS THE TELEX SOUND ENHANCEMENT SYSTEM? Trans mit ter: The trans mit ter gen er ates and am pli - fies a RF (Ra dio Fre quency) car rier sig nal, mod u - lates this car rier with the mi cro phone sig nal, and ra di ates the mod u lated RF car rie r. Re ceiver: The FM VHF re ceiver is tuned to the fre - quency of the trans mit te r [...]

  • Page 4

    OFTEN ASKED QUESTIONS Q ues tion: Can more than one sys tem be used si - mul ta neously? A n swer: Y es but never on the same fre quenc y. Y ou will need to have dif fer ent fre quen cies for ev - ery re ceiver/trans mit ter com bi na tion. All trans mit - ters are fac tory set for spe cific fre quen cies. Q ues tion: Is the sys tem more sen si tiv[...]

  • Page 5

    TECHNICAL INFORMATION SR-50 RECEIVER GENERAL DESCRIPTION SR-50 The Telex SR-50 Re ceiver is a com po nent of a sys - tem which op er ates on 17 fac tory pre set chan nels in the 72 to 76 MHz fre quency band. The re ceiv ers are de signed to be used with Telex S T -300 and PS T -170 trans mit ters, but they can be used with other brands of trans mit[...]

  • Page 6

    SR-400 SYNTHESIZED RECEIVER General Description SR-400 The Telex SR-400 Re ceiver is a com po nent of a sys tem which op er ates on sev en teen user selectable chan nels in the 72 to 76 MHz fre quency band. The re ceiv ers are de signed to be used with the Telex ST-300 and PS T -170 Trans mit ters. Operating Features Vol ume OFF/ON Con trol: This t[...]

  • Page 7

    Fig ure 3 Op er at ing Fea tures SR-400 - 5 - SET E.D.R. VOLUME OFF/ON CONTROL HEADPHONE JACK SET SWITCH BUTTON TREBLE CONTROL BE LT CLIP BA TTERY COM PARTMENT Telex SR-400 P/N:71166000 FCC ID: B5DE405 S/N:00001 SPEC I FI CA TIONS SR-400 17 Chan nel Syn the sized Re ceiver Tem per a ture Range .......................................................[...]

  • Page 8

    ST-300 SYNTHESIZED TRANSMITTER General Description The Telex S T -300 is a base sta tion trans mit ter which op er ates in the 72-76 MHz band and ac cepts a wide range of au dio in put lev els. Operating Features - 6 - ST-300 Front Panel 1. Power But ton 2. Head phone vol ume ad just ment 3. Head phone Mon i tor ing Jack 4. SET But ton 5. Back Lit [...]

  • Page 9

    Fig ure 5 LCD Dis play Func tions - 7 - 1. Chan nel In di ca tor 2. Au dio In put Me ter 3. Fre quency In di ca tor 4. En hanced Dy namic Range Model In di ca tor 5. RF Trans mit Power (High when lit, Norm when not) 6. Un bal anced Au dio Level 7. Bal anced Au dio Level 8. Bal anced In put Se lec tion 9. Lock Out In di ca tor CHANNEL -10 -5 0 +3 +6[...]

  • Page 10

    EQUIP MENT SET-UP ST-300 Synthesized Transmitter UN PACKING: Un pack your sound en hance ment sys tem. If there are any dam ages or short ages, re fer to the " War ranty Ser vice In for ma tion. " ST-300 TRANS MITTER LO CA TION: Se lect a suit able lo ca tion for the S T -300 Trans mit te r . Try to keep a clear, un ob structed path be tw[...]

  • Page 11

    RF POWER SE LEC TION: While the RF Power in di ca tor is flash ing, press the U P AR ROW for HIGH and DOWN for NORM (the RF Power line will not be dis played). NORM power should be used for small to me dium sized ven ues and when - ever mul ti ple sys tems are be ing used. Press SET when the power is set and the Un bal anced In put level will flash[...]

  • Page 12

    MU L TI PLE SYS TEM IN STAL L A TIONS: As with any ra dio de vice, in ter fer ence can oc cur at any time. The fre quen cies of fered are shared with other le git i mate us ers. The se ver ity of in ter fer ence var ies with the dis tance to the in ter fer ing sta tion. Mul ti ple sys tems fur ther com pli cate in stal la tions. The fol low - ing s[...]

  • Page 13

    EQUIPMENT OPERATION SR-50 SYNTHESIZED RECEIVER Operation of the SR-50 Receiver Try to keep a clear, un ob structed path be tween the trans mit ter and re ceiver an ten nas for clear re cep tion. Plug in a unit such as an ear phone, head phone but - ton re ceive r, in duc tion coil neckloop , or au dio-input hear ing aid into the head phone jack. (T[...]

  • Page 14

    En hanced Dy namic Range (E.D.R.) Op er a tion The Telex S T -300 and PS T -170 Trans mit ters are equipped with E.D.R., En hanced Dy namic Range ( companded ) au dio. This mode greatly im proves the Au dio Sig nal to Noise Ra tio when used with the Telex Model SR-400 re ceive r . The E.D.R. mode must be se lected on both the trans mit ter and re -[...]

  • Page 15

    BATTERY REPLACEMENT The SR-50 and SR-400 Re ceivers use two (2) AA bat ter ies. When the bat ter ies are low the sound will be dis torted. Re place weak bat ter ies with two fresh AA bat ter ies, and po si tion them in the bat tery com - part ment as il lus trated in Fig ure 9. For ad di tional in for ma tion re fer to the “Bat tery In - for ma t[...]

  • Page 16

    BATTERY INFORMATION General Im proper bat tery se lec tion, use, in stal la tion and care are the cause of nu mer ous wire less sys tem fail ures. Alkaline Batteries Al ka line bat ter ies such as Mallory ’s DURACELL® or Eveready ’s EN ER GIZER® pro vide the most re li - able op er a tion in wire less trans mit ters and re ceiv ers. The use o[...]

  • Page 17

    -----Keep the dis tance be tween the trans mit ter and the re ceiver(s) as short as pos si ble. The greater the dis tance the weaker the sig nal. Make sure the “sig nal path” be tween the trans mit ter and re ceiver(s) is un ob structed. Y ou should al ways be able to vi su ally lo cate the an tenna of the trans - mit ter at all times. SIG NAL [...]

  • Page 18

    TROUBLESHOOTING Re read the sec tions of this man ual to make sure you have com pleted sys tem set-up prop erl y. If you are un able to solve the prob lem, con tact the dealer from whom you pur chased the sys tem for as - sis tance. - 16 - PROB LEM SO LU TION DIS TOR TION -Sys tem's au dio qual ity seems dis torted at me dium to high in put le[...]

  • Page 19

    - 17 - CUSTOMER SERVICE INFORMATION If your re ceiver or trans mit ter should need ser vic ing un der the war rant y , please con tact: Customer Service Department TELEX COMMUNICATIONS, INC. 8601 East Cornhusker Highway, P.O. Box 5579, Lincoln, Nebraska 68505-5579 U.S.A. Phone: (402) 467-5321 or 465-7021 All claims of de fect or short age should be[...]

  • Page 20

    ACCESSORIES and PARTS Rack Mounting Kit RM-S for mount ing one S T -300 ............................................................................................. 71081-001 RM-D for mount ing two S T -300 ’s ......................................................................................... 71081-002 Earphone (for SR-400 and SR-50) (sin [...]

  • Page 21

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  • Page 22

    PN 804018 Re v . D SEPT 2005 Made in U.S.A. TELEX COM MU NI C A TIONS, INC. 12000 Port land Ave. South, Bur nsville , MN 55337, U.S.A.[...]