USER MANUAL I MODEL CM300 I Console Mount User Station I MODEL RM300 I Rack Mount User Station RTSTM 9350-2643-00Rev E 2/01 PROPRIETARY NOTICE CUSTOMER SUPPORT The RTS product information and design disclosed herein were originated by and are the property of Telex Technical questions should be directed to: Communications, Inc. Telex reserves all patent, proprietary design, manufacturing, reproduction, use and sales rights thereto, and to any d c l e disclosed therein. except to the extent rights are expressly granted to others. COPYRIGHT NOTICE Co yright 1994 by Telex Communications, Inc.. All rigKts reserved. Reproduction in whole or in part without prior written permission from Telex is prohibited. PATENT NOTICE This equipment contains and uses a desi embodied in United States Patent No. 4,358,644: "A Elatera1 Current Sowce for a Multi-terminal Intercom". Ibis design employs a two-wire to four-wire convemr. UNPACKING AND INSPECTION Immediately upon recei of the equipment, inspect the shipping contamer and e contents carefully for an discrepancies or damage. Should there be anv. noti& the freighi company and t6e dealer at once. g WARRANTY INFORMATION RTS products are warranted by Telex Communications. Inc. to be free from defects in materials and workmanship for a period of three years from the date of sale. The sole oblieatim of Telex durine the w a m w oeriod is to provide, whout charge, pans &d labor necekky to remedy covered defects appearing in products returned pre aid to Telex. This waifanty does not wver any defect, mahnctim or failure caused bevond ,~~~-the conhol of ..Telex. .... ., including unreasonable M negligent operation, abuse, accident, failure to follow insmctions in the Service Manual or tbe User Manual. defective or imomner associated equi ment, a t t e e at modificadon'and repair not authorized gy Telex, shlp mg damage. Products with chei serial numbers remov!e or effaced are not covered by this warranty. To obtain warranty service, follow the procedures entitled "Procedure For Renuns" and "Shipping to Manufacturer for Repair or Adjusrment". This warranty is the sole and exclusive ex rcss warranty given with respect to RTS d u c t s . It is l! e resbonsibilitv of the user to determine before purchase that [hi's p r o d ~ ~ i is suitable for the user's intended purpose. WARRANTY. NEITHER TELEX NOR THE DEALER WHO S U S RTS PRODUCTS IS LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND. Customer Service Department RTSfl'elex 12000 Portland Avenue South Bumsville, MN 55337 U.S.A. Telephone: (952) 884-4051 Fax: (800) 323-0498 RETURN SHIPPING INSTRUCTIONS PROCEDURE FOR RETURNS If a repair is necessary, contact the dealer where this unit was purchased. If rc air throu h the dealer is not possible, obtain a R&N A&ORIZATION from: Customer Service Depamnent Telex Communications, Inc. Telephone: (877) 863-41 69 Fax: (800) 323-0498 DO NOT RETURN ANY EQUIPMENT DIRECTLY TO THE FACTORY WITHOUT FlRST OBTAINING A RETURN AUTHORIZATION. Be oreoared to mvide the comoanv name. address. phdne 'number,i person to conkct kgarding the re 'air, the type and qgntity of equipment, a description ofthe pmb em and send number(s). SHIPPING TO MANUFACTURER FOR REPAIR OR ADJUSTMENT All shi~mentsof RTS d u c t s should be made via unitedparcel Service br the best available shipper. prepaid. The equipment should be shipped in the original Dackine carton: ifthat is not available: -use anv suitable container that 1s rigid and of adequatesize. If-a substitute container is used, the equipment should be wra paper and surrounded with at least four inches o in ixielsior or similar shock-ahsorbine material. All shi ments must be sent to the follo&ng addrcss and must incrude the Return Authorization. pped Factory Service Department Telex Communicabons, Incorporated West 1st Street Blue Earth, MN 56013 U.S.A. Upon completion of any repair the equipment will be returned vla United Parcel Service or specified shipper collect. Figure 1-2 CM3001RMUW)Block Disgram On the Model CM300/Rhi3w, a latching switch or 1.1 DESCRIPTION momentary push button tums the microphone on. The Model CM3W is a console mount, t w h l intercom user station. The Model RMUX) is a rack mnmt, two-chmd intmom user station. The user station is designed to he used in a full duplex, wafermce line intercom system. The mommtary push hutton allows quick bursts of Confereuce Line IntMcom Svstem (Figure 1-1) communication, especially useful in a high noise mvironmmt. Ihe latched position allows 'hpnds fne' op d o n , when the llscr aeuls to have two way conversation while paformiDg a n o k activity. The Channel Select Switch A chmnel sdector switch allows a choice of two (optionally three) ch.nnels. Whm the switch is on the 'I' positionthestationtalksandlistensonchnollcl1,onthe c ~ , a l l u s e r s a n l i s t r n w h e ~ a n r e o r m m o t b s r "2' position, channel 2, and m on. On larger systems the users are talking (eonf&g). Up to 75 usns csn '1' position may be any system channel (1 through 12 for share the same d e r m c 8 line (or confcrma bus). example). Similarly, for position "2'. See Section 2.1 for DC powering rsqoinmeats under these conditions. A confline intercom sysIem allows a group of people to talk and listrn on a single chaaael. On this Call Li& Push Buttog (CM3WL/RM3WL, only) Full duplex @on allows two way conversation at Pushing this button transmits a mll signal to all other units t h e ~ t i m e , t h a t i s , o n e u s e r ~ ~ t a s s o n on d the chmnel selected by the c b l selector switch. A all signal on this &amel will cause the all light push buttontotlash. ~ & p s h r a t e i s 2 t o 5 t i m D s a p e c o m d . The all signal itaclf is a 20 kilohertz signal. The CM3W/RM3W, with a hedset, intcrhces a hurmn usertotheinintaoomsystem. Tbeusertdksandlirtms using the head& (or a hmdsst). The headset umnects to The CM3MYRMUK) .ad CM3WLRM3WL use the CC33 card umnector ( o p t b d l y five or six pin). The CM3W/RM3W ere# u idhated bclow. Codcl at the cad of each pngnph uneeds to the systsm using a t h e conductor iadiatc thc cud d. Codcl ue: *CC33 u r d , **CW card. cud. (CC33 sehemtic i SD1464, CCWCC45 "mitype cable. me CM3w/RM3w wataiU6 MCC(5 .ohcrmtic is SD1427). four ~011tmIs:the volum anmoll, the latching microphone switch, the momntary microphone switch, md the chanael -DL: Dual Littcn on two channclr. The volume wntml is select switch. On the Model CM3W/RM300L, the ~ t o a d u a l ~ t r i c p o t c n t i o m c t a w i t h t w o k n o h sThe . momentary microphone switch is replaced with the all 0h.nnclrelcctmachmutatheWLugunl. Thcouuidekmb f o l h thc duancl selector. The Mi knob i the non-talk, tight button. listm only 0b.naCl. Volume Control -E: Rognm I n p , D c h line loop(hrough, the hkncedpmgrunufedmmatud. Pinr2Md3uethcinput The volum wntrol on the CM3WlRM3W has a wide wnncUionr. A dual W& ptentiomcta with two knobs pmvidu rcp.ntc level controls for intercom md pmgnm. range to canpensote for: user he&$ differences, ambient noise variation, variations in headse4 I haadset d-3CII: T h e C i i m d opmtion. Line and LoopUvough tivity. and variations in voice. The volume watrol in connecton ue changed to 4-pin fmm 3-pin. A 3-position the CM3W/RM3W mhtcea distortion by driving the dunnd s e k a mach rcpkes ihc 2-position witch. headphone amplifier oaly as much as needed. -USMB: UnSwitched Micmphonc output, Balanced. Deldeo linc boplhrough. L e d -7dBm to +3dBm. . Thc USMB pmvidu Ilinc level microphone signal to other systems such u lntenupted Feuihack System (IFB), telephone, radiotelephone. In n o d system opention, one a nrole users talk and the m or Stage Announa. othm listen. A microphone switch on each station allows the talker's microphone to he mabled and allows the -LP: Loul Paver munu. A small moduk wnvem AC line listmas to keep their microphones disabled. In this power to low voltage to power the urer station. a .cparatc condition, speech intelligibility is euhanced since connector is provided. The unit docs not use power Cmm the intercom line. backgmund noise from other microphones is not present. w. Page 5 13 CM3oO/RM3Ml SPJXWICATIONS JI..hbwArdUir Input DC Voltage Voltage ruin ovlplt voltage 34dB 8 ~ ~puli-wprt l u into 25 n q t - lnwutpuliiatouobm FrrqmcyRapomt lSObemto8kiloktzr3dB NUI'EI DO NOT USE BEADPEONES THANISOHrds. SidUms - IMPEDANCESLESS -2OdBtoIullo. AdjmttncntRrqy (YCIIILL SpdiDgFrcqwyr ZO,WObem*1whcRE -u 5haas2bem B..*.tCrue(u MMiaophm XLRtypcCpi~tuM!C CuboDMicmpbmc llCIPsdudpboacj.cl53drevit u.rca8sdam InPt M XLRtypc3pinfcmk XLR typc ~ male ~ Ndrc..ML.r*. One unit Tm lmin - M a n eh a m l l l i k w"tIm- Im- Muimuminput Lnnl Fymiii LimitsrRrqy PirkL Mdn -- FiontRncl: t G EolwlPah~Fcdcnl Studud 5 9 5 L T 2 6 4 9 2 CLPb Gdd Iriditcmcr Aluminum -- sPixmcAnON NOTES CmTmtSoua TransferRatio o~ B U 0 dB, Qcuit) Page 6 0.775 WIU 1 m1mt 0.775 vdu rnrr into600 ohm 1 4 (0 dB%open L NW: Opemdion of a aydm or maximum load dOCS not allow for other miations such as fempermun, line *e, able ,-er and s u w . A nwrt pnrdcni o p p m o a h & & o p c ~ ~ s y ~ ~ n o n o n f l r n n o8f 0 % 2.1 Power Rquhm&, Type Of System, PowMethod And Power Supply(i) -Pad*. Power Ranuremnts To maintain a bridging 10,000 ohm0 bpedanw to the intenmu line, the CM300/RM300 requires +18 to +35 volts DC. To opemte in I d power or t a t h y modes, the CM300/RM300 rsguires from 15 to +35 volts DC,but ic opesable at reduced performauce from +12 to +17.9 volts. + In (3) above, a l d power supply provides 12 to 24 volts DC at 120 mill*mpms peak for esch station, or, for nmote single station operation, two 9-volt batteries in mliesrmy be&. In (1) & (3) above, the two Wireb curyiug audio require one system tamhation wnsisting of a UX) ohm mistor mula 100 mimfarad capacitor in series. This combination i s ~ r r o s s t h e t w o w i r c s . Coanectpolorized @tors negative to system circuit common. ~CMHKllRM300cmbe~edina(l)three~ system, (2) two wirs system, or (3) speciPl* win To W l tbe 0%300IRM300: sy-1. ~ t h e t y p e o f s y s t e m i n w h i c h t b e PWCMR M@@ CM300/RM300 is to be htalled. Detemine the powPowerismrri~tothe\mitfromasystem~supply *~dpo~ersllppl~(i~). using three diffcrrnt methods: 2. Dstamine the mwnting of the C!M300/RM300. (1) In a 3 - 6 system ('Series 17" type), the power is Stpuatefromtheaudiodsuppliedcmtnlly. 3. Read 'Choosing Hadsets or Ehds&s'. 4. Dcraminc the cabling m p k m a t a . 5. Create a system block diagram & equipment Si (if not W y available), them iustalI the systua (3) I n a ~ t w o w i r s S y s t e m ( L o u l P o w o ) , e s c h c M 3 0 0 ~ 3 0 0is l d y pawerrd md opmtes on switch ChnneJ two. Ths cM300/RM300s are 6. Verify wmct rystem opention by using the checkout inusing two win able. P o r n is procedure in this dvpter (2.6). suppliedbyabatteryoraloulpowgsupply. The local p o w supply should be isolated from eutb 7. Update the systeal block diagm, squipment list and ground. my 0 t h on to reflect the 'as hitdled' In (1) above, the power supply is a regulated supply, 24 dguration. If the system block diagram was volts DC to 32 volts DC, 1.5 .mperes. This supply cm origi~Uyd by RTS Systems, swxi a copy of the o p u w up to 50 CM300/RM300 and 30 'as instrlled' system block diagnm to RTS Systems. CM300LIRM300L user strtiws. This diagram will be ussd to update the original docummtoton. d for fuhueservice ~ p p t . For case (2) above, rsgtming cutmats shown, the supplies versus rmximum rmmber of Etatiom pmvered are: power S m l y !xx!!2 phl300 (37mA) Model PS8 (0.43A) Model PSI5 (1.OA) Model PS31(1.5A) 11 27 41 !xaL RM300L (60n1,Q ?hs a 3 0 0 mom& in a console, use the installation diagram at the back of this maoual for cutout d i i i w s md d i n g hole I d - . The RM300 mounts in an EIA 19 inch rack. Page 7 23 millipmpms for tbe CM300/RM300, 33 millirmperes for tbe CM300URM300L). The ability of hadphones to shut out mwmted envi=ts Euviroampf Table 2-1 shows typical opentino o f o f mi= p d . and tbs A very quid openting mvhmnmt, such as a television studio, may require that Damd does not leak from the headphones, meanbig the badphoaes should have good 'acoustic isolation'. A very noisy or Loud mvironmat usually requirts headphones tbat prevent outside muud from ledring in (again, gwd rcwatic isolation), h e a d p h that can pmQes a loud, dor d, lad noist ancelliag micmph-, as well. ~talaoigvaiesfromnons(odBisolation)to.bout 1/8th as ioud (30 dB isolation). The degree of isolation depads both on the design of the bssdset sad the h p a c y colltmt of the m h t a l noise. Lightweight, 'opm' hesdsetg such as the RTS System Lt1267 (single muff) md LEI268 (double muff), have plmwt no (0 dB) isolation. The trade-off is that the LH267/LH268 am very comfortable and can be worn for long Mods (8 to 12 hours) without physical d i d & fromtheeandfsorlwndbd. TheLH267/LH268are lowilqdmceandcanbetlnneduploud. U ~ g ~ i n a n o i s y m v i m a m a n t ~ ~ theaormd!iumtheheadphoapisasloudorlouderthmtbe sound l d i n g into the headphmes from the noisy en- The DT108lDT109 headmt6 have m isolation m g b g from 1odEtomdB. At last four companies, Telex, Sstcom, David Clark, and Cuter Eagbmhg adl kadscts intended for heavy iduskid, .aosl#rc, md militmy mark&.. Thcsc hdsets ern p V i & d c isohtion figma of 2odB to 40dB. G d y slmking, t l w o kadscts us heavier and Less L a v ~ o e ~ u e l o r d e r , & g mmfortablo to wcu. theluorstltiontodnwmncwrrntfromthepower supply. High hqdmce hadplmss am not as l a d , dmuing lcss tfrom tbs paves apply. The user stationdssignmgsof~fortheberdphoasprt of the hadsat is 25 ohms to 600 ohms. Head- ~~geaonl,~-~f~hs;ldphoaedcpcads upon its ability to h o & powar at a givm voltage (impdame) and the efficiency of its design. Practically. theimpdwxhasalargerefhxtwith~tdaybeulstts. Ingsnml,tbsoomfortofberdsetsdepmdsuprm levels. InadoublemuffhadsetruchastheBcyerDT109 their weight, padding and dssign. sold by RTS Systems, them u e 50 ohm h a d p h e s eoanected in parallel d t i n g in m impedaaca of 25 ohms. In the head& cpnaeetinO able, ptsvent coupling be-weu~ the microphone and headphone leads by using at I& a Efficiencv The user station pmd- the loud& sound in shielded wire for the micmphone, aad a seporrte pair of low impdwx headplmw svch as the DT109. In this wires for the hcdpkm@). &ttor isolation may be headphone, ons milliwatt of dcchical power produce 94 possible with a twisted, shielded pir for the micmpbne leads. Do not allow hadphone ground to mutact dB SPL (soundFlwsIUa Level). micmphw ground or shield. Tie the shield to microphone PracticalLoudllw TheuserSt.tionuuproduce.aSPLof ground or miuopboae low. Do not tie the shield to the 111 dB in each or of a DT109 or DTlO8 headset. LMV case of the Mnncetor or the case of the user station. In impdance htPdstts such as the DTlO8 and DT109 gcaeral the maximum lmgth for the headset cable is ten feet heodsets,uusstheuserstationto~morrpaw~from(3.1 meters). Lar@ over ten feet require a special the power supply. With DT109 hdsets, CM300mM300 exteasion able. Check with RTS Systems for help with peak cumnt is 75 milli.mpWe. The CM300URM300L longer cables. mak currsnt is ismillhoeres. With 600 ohm bdpbcmes, peak eumnt d 30milli.mpnss for the CM3001RM300 user sation. 40 m i l l i ~ ~forb the CM~OOURM~WL user mion. (quissc2at c u m t is ~MX)toUXX)ohrmwillopnteatIsduwd Page 8 Anotha bmsfit of not "earth" grounding the circuit return is tht it prevents the h t m h t i o n of noise through 'earth" curw(s from other equipmeat. If the RTS Systmes circuit gmund~tsthsc~l~nts,itisWrdythattheywillbc hevd is interfering noise on the d 4 o n line. Wirsri?rcddsrrninssthe~opwrtingdist.nCc (where the DC voltage drop is the limiting factor). Ths following eqlutioas apply for a wndnctor size of #22 AWG. a minimwnuser station voltage of 18.0 volts, d a minimum power supply voltage as stated below. For Modds PSlO, PSM, PS31, P M , PS60, usa Vmin = 28.4 VDC: D D h - .. 322,181 1Ibt -( 1. (mtgs)= 99,133 1Im (milliPmperes) (feet) P For Models PS8, PSl5 (Vmin = 24.0 MC): Wirin~lC&&g(See Cable Wiring Application Momati011) .. (feet) = 185,874 1 Im (rmllumpcrcs1 Dhce- Exnmpk: (map) = 56,654 1 I&# (milli.mpsrss) .. i in Section 7, Two c h m d 'TW' applications, or single c l l m l d , thma Ths CM300URM300L with 25 ohm . With a PS8 supply the maximum c p a h g ~ f o this r anti011 is 185,874160 ' ' = 3098 fkt (944 mstas). Asd with a PS3-ly the muimom opsnting dishlLce = 5370 feet (1652 mtgs). ~ u s a r u p t o 6 0 D wiro a p p l i ~ & ~IMY ~ USE ather e~ ~ C ~ O ~ I I O cable DC (for canrmimcs) or hmhvkhl-pair cable (Isss expensive tbrmmicqhomcnble). S I a n d a d w i r c r i z c f o r t h e ~ is#2zgougswiroforinkm=&h. F o r y t iumWi01u arch chtlmd should have m i~~J~wdually (37mA) is shieldedtwistalpirof.tlasr#2zgurgewirc;wrchis 8723 for 2 ~ b m n d UUCI ~ , mn for 3 cbmnels. POX plenum md I or 2CV' C wiring, use Bddea 88723 md 88777. Ths plaaum able hna a slighUy smaller d*metcr, isTefbninsul.tsd, d.boutthree. timgthepriceof 8723 18777. System circuit g r d should not b k t l y c o n d to WireusingcableWi~,Section7,toreduce md a usa station with 25 ohm 185,874EV = 5024 feet (1531 -). phollg intdemim UUCI help maintain a low crossc.1L f i p 'euth'or'chssis'zmund(dirseclvmesnsacamectionm b ohmmtawwld&). ~ g C T 8 1 . l i o n i s b ~ t ostmea*. its own chassis via a 0.1 microfaad capacitor, stabli6biug a r P d i o f i . q l l c I I c y ( R F ) ~ t o r a d u e s n d i o ~ The audio a& Liac levd is bchmwa 1OdBu md OdBu (bchvecn 0.24 .ad 0.77 volts rms). Thwe levels are low in~cefmmndiotnnsmi~. ~ t o ~ t ~ i n t o & e q u i p m m t ( s u e b a s To pre-vent a buildup of voltage acm(g tbe system ca- TV amsns) yet high amugh to minimirs extend p l c i ~ , t h c p o w s r s u p p I y h s a b l s s d s r ~ t o c h . s s i s inmfemcetotheTWSpttm. ground (22 kilohms). If the system hs no RTS Systems pow- supply, add a bleeder mistor at a cmotnl point in The 200 ohm Liac i m p d a w is high enough to uUow mnnmmication om liae lengths of 1.6 kilometers (one the system. mile) d low mwgh to permit m d#lrule speech The benefit of not 'earth' gnnmdiug the RTS System bmdwidth with 3.2 kilomttefs of d a t e d cable. In circuit nzum is that continued operation is possible during most systems the 200 ohm impcdpace gives a high fidelity nn accidmtrl system ground fault. This awidmtal bmndwidth with low lwsar. grounding uo happm whea a wire is pinched or a cable scraped.erossasbprpedge. Oncrceidentalgrwndcmb When using equipmeat in nia or conditions of excessive t o l d by the system until the fault can be cleared md moisturr, always protect the equipment with plastic covers me lifted out of mud, (with luck) b c f m a sccolld ground fnult can cause noise or md make sure uU cable c~ll~ectcns mow or moisture md pmtected with plastic. Wpter mud overload or bring the system down. dsnowin~~~~cpnca~s~noise. Page 9 IntheIWIn~systemd~sluroscommm ciraritgrcundrshnn. due to common^ XLR431 m k ~cmbeducedbyn6ing22pylcnhieldeduMe, I I I ~ ~ M : -55 m u , n~mirul and~elillgsbidddninwinswithcircuitrchunwirrs. Output Lvclto lll!d&onc: 10 volta pak-tc-pd. Capacitive cmssWL cm be raducsd by using rwo rbidded apm circuit. jmir. O w w i r s o f o n c ~ ~ t o c b r n n e l o n a ( p i n 2 ) , a ~ ~ 0 f b 0 o t b t r ~ ~ t o E h . n n a ~ @ i n 3 ) Pin1-M*ropbwcbw , the nmrining wires are circuit retmn (pin 1). (See Cable Pin 2 - Miempbwc high Wiring Diagnm at back of mmd). Pin 3 - Hadphonelow ~ ~ m s y ~ b e r h i e v a l i n m n t e ~Pin4-Hadphonehigh using Moael CCD214 CrosatrlL ChceUion Dsviw. ~eCM300isdesignrdformmmtingina~1e(See insWatio11 dab at back of &is rmmul. Ths RM300 is deeigned for nck mounting in m RIA 19 inch Rok. Leave .?pace for control -, abliog md savichg. such ~cab~g~wloops.rachingforXLRtypeeonacaor locks. local power option power suppti~~~ md llmd& connstorsmdabks. If the hsodsct connstor is rrmoted, Q not w this cable clwe to intafaing sourcss wch u, videom d t o r s . power supplies md eqDipmat with iater~I powa supplies. Cuboo Micmphone Hadrct Colwctm. 114 in. phom jack (12): Uaiag~usa~onswilhthree~mdthlm Cuboo MLmpboac: Ti (-15 dBv iaplt, nomirul) pgscrm, verify thDt dl pgsc*ls can in@ rte Hcrdpbwc: Ring (10 V p k to peak open circuit) ~ ~ t h e Vss r i fyy t h .~1 W i t I l 1 I 1 m i ~ Common. S h s w i t c h off md volume mmIs midway, only a b d y audiblehissisbsrrd. T b e o t h c r t w o p c n r m s ~ d s a m d qudly louddcleutothsthirdpason. XLR-3-31 mqlack (for ringlrdumcl) - Pie 1 Common (low side of linc) Pin2-Poarrr Pins-Chnncl XLR-3-31 mcqtack (for ~~linc) Pinl-Chanell Pin2-Chl2 Pin3-Channel3 Pin 4 Common - Page 10 Table 2-1 Table 2-2 T y p i d Openting Envircammts, Embmmtal Noise,Sormd PIcssureLsvel, a t 1 0 ~ ~ T y p i d Opeding Environments, ~PrcssureLevel, at= sQw2 Seb, Aimaft 120dBto160dB Orchestra, 75 p i e , (Perlis) or Pipe org.n,(PerLs) Rock Concat 140 dB 11OdBto140dB Pirno,Parks 120 dB Blaring Rdio 110 dB Cmtrifugd Vmtilrting F m 110 dB Auto on Highway 100 dB m s@x!zi Muimum AUomb1.3 -=EX? 140 dB + LII267 cM3oo/RM300, 10 dB below Clipping 114 dB DT109 + CM300/RM300, 10 dB Mow Clipping 111dB + LH268 CM300/RM300, 10 dB bdow Clippiag SetCOmSeria5+CM300/RM300, 10dBbdowClipping VdVmtilntingFm 90dB Heoaphonsswith 20 dB Acoustic Voiffi, Sbwting 90dB ImLtioaat130dBRackConoert (MdCI-4 Fwtory 75 dB Voics, 70 dB H~wilh40dBAcoustic ~lBticmat140dBRoekConcert Rcsih 45 dB Televisicm Studio Voice, Wbisper 110 dB ( M da 25 dB to 35 dB 30 dB Page 11 m 99 dB 11OdB 100dB Figure3 Fmnt Panel, Model CMU)O/RM300 User Station Page 12 SECTION 3: OPERATION 3.1 Operating Controls And Conaectors The r e f m c e numbcrs in below comspond to the circled numbers in Figure 3. Ref No. Name 1) CHannel & k t Switch 1 2 Selects 1of 2 cham& (staadard) or 1of 3 chPnncls ( o p t i d ) . The optional Call Light operates on the channel selected by this switch. Tbe CHmuel select switch is omitted in the Single Chnnrd (SC) option. 2) MIC ON-OFF toggle 1) MIC ON-off plsh button A m~mmtnry-saionmicrophoae d l e switch on the Model CM300/RM300 4) VOLUME A headphone VOLUME control. (May be a dud conhol for the Dual Listen (DL) or Pmgnm 0option). 5) CALLplshbotton ( O p t i d ) The CALL push buaoa m Model CM300L/RMU)(1L@Jo momeatuy mic). 6) DYNnmic M I C r o p b HeaDSeT Colmsctor. A dynamic miaophm typshead& plugs in hm. 7) CARBonMICrophooc A c a k m microphone typs head& plugs in hae. The headset may also HeaDSeT beacubonmi~smul.tstypebspdpet. A latchingrction switch. (Stsndsrd - -without the Call Light option). Coaaeaor (onRear P d ) INPUT Plug in the he Liw hemhen. Colmcrs tbe h e l e mount usg station to the TW intarom system. -- A cwveni(0cb cemector aIlows another comoLs momt user station to be coaneacdtotheTWintacomsystem. CAUTION! Always turn the voltme mnbol dl the way ewnterdochvise (to the left) before plugging in the headset 3.2 Operation (Afterconnscting station to the intercom line md plugging in hesdsst). To ~ ~ m m u n i c pdc ci d y with ; m o k station or d m s : 1) T m the VOLUME contmi dl the way ~ountcrc1ockwise(to the left) before plugging in the herdset. 2) Select the chmel usjng Ihe b e 1 select switch. 3) Set the listening level in the headset using the VOLUME contml. 4) To talk, set the MIC ONIOFF toggle switch to the 'ON' position (or push the MIC push button) and speak into the minophone. Return the switch to the OFF position to eliminate m e c e s s ~ r noise y on the intercom line. Page 13 Sectim 7: DIAGRIMS I DRAWINGS Dacumcnt Nunbet m These dnnvingaapplies 0 CM300 Unifs with CC33 or CC40 wnlr. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -15 Installation hawing. CM300. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 OD2993 A Outline hawin& CMU)O. ID2993 A These dnawings applicp & CM300lRM300 Units with CC33 orCC40 d. - A Cable Wiring Diagrams,2Chwncl SystemM!ha~elSystem TM1786 B 12-volt Battcry Opedon/ Tckpmdoctim Systean Exampk . . . . . . . . . . . . . . 17 M u l t i c ~ O p e m t h I D ~ ~ L Opeaarim(?brextendeddistmas). ine . . . . . . . . .19 Model CM3WIRM3W User SOatOna with 1333 Eonl (Slrudrml uni& and vnib with CdJ Light Option). . . . . . . . . . .20 AssemblyDhgmm,P.C.B.,CC33. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 SD1464 B Schanatic Diagram, Scrim B Phase 3 User Statim . . . . . . . . . . AS1821 B Model CM3WIRM3W User SPllions with CC40 cud( U& w&h wiow oprions or eombindonx of oprions9 Also applies to sPMdord unifs k i l l khveen 1979and198l, appr0xhakly.J . . . . . . . . .22 Assembly Diagram, P.C.B. CCW45 Layout. . . . . . . . . . . . . . . . . . . . . . .23 SD1427-01 B (Simplified)Schematic Diagram,Phase Dl User Stations ( 0 2 4 ) sheet 1 AS1409 B CC40 anti detailed d i a g m . . . . . . . . . . . . . . 24 Schemluic D i . P h a s e 3 Usa Stations, sheet 2 of 2 . . . . . . . . . . . . . . . . . 25 SD1427-00 B Schematic Digram, Phase 3 User Stations, sheet 1 of 2 SD1427M) B Cali L' ht Option used by both Modal CM300IRM300 User S & ~ Mwith CC33 ccvd(Standard units and units with Call ~ i g h t plion). 8 SD1470 . B Servicing Diagram, Light Signaling Circuit,02-18SL. Phase 3 C o n f i g ~ o n. . . . . 26 Page 14 0D2993, Outline Drawing, CM3OO Page 15 Page 16 Channel 2 3 n 3 Common I Channel 1 2 Common 2 I Drain Wins 1 To Supply N.C. ,L-1I, - 1 To Station --, n Gm 3 - Channel 3 Elk Red 3 , , N.C. Channel 2 c To Supply Cable Wiring D n 2 To Station i ,T h Channel Systen Page 17 - Page 18 Page 21 -ma -u (I, - .. <-a) DEmIII~nuUc-CIllm- 1 R?=- mraarrsra i m n - :- . : I -.