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HP Car 3490A manual 737, a Block Diagram

Models: Car 3490A

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Figure 7-18. 3490A Block Diagram.

737

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HP Car 3490A manual 737, a Block Diagram

Contents

Muitimeter Tt,,,,tHewlewpackard ManualPartNo MicrofichePartNo PrintedAPRILTableofcontents C0NTENTSGontd RABLEOFCONTENTSCont,d Listofillustbations Diagram Äl,il ?7l+eatic ?rorr ACAdiGüffiPorariryR,tüä Frz12ACCESSORIES.AVAITABLE 1lNTBoDucTl0N0PT0NS SPECTFtCATI0NS14INSTBUMENT.AND Manualidentifica T I O N 35+o . os +o . o2s Lo . tContd Specifications Oo7 .005 .0m8 1 5 0 O07 .oo5SpecificationsCont,d 00fiv1000.0v 24hours23o 10cDVs/u SectionI Model34904 GenerallnformationContdVin = vs/H rl Dvs/HREc NTR0DtCTloNInstallation INSTALLATION.OFOPTIONSBenchUse LsolatedData0utput0ption021-hp-111ZlAlOption050andOption060 29INTERFACE.CONNECTIONSData0utput0ption021 RemoteGontrol0ption022OPTtoN021 Fc öSectionII Model34904 7N i 3i -s t** JrJü,1t REMOTEINPUTCONNECTORJ7 5 E E i F = =2H* F EI = 6 s i ä 2 qd E ? 3 5 fr i F 3 ä = ! 9 i lRearInput GeneralPurposelnterfaceBusConnectionsCablepart NO. Length 10631A 6 3 1 10631CGeneralPurposeInterfaceBusConnectors GPIBBUSCONNECTORJl29 9 f OutguardTriggerConnections,GPIB0ption030 Sample/HoldConnections,0ption040/045D e l 3 4 9 0 a For J7 is -hp- Part No -0084 Amphenol S7-30360-37sRepackagingforshipment SectionIII Model3490A WARililG Instbumentcapabilities13FRONT.ANDREARPANELOESCRIPTION 15MAXIMUM.INPUTVOLTAGESI7 . Generaloperatinginstructions Turn-OnandWarm-UpGuarding FloatingMeasurementsSELF.TESTOPERATION Acvoltagemeasurements Resistancemeasurements60.0hmsSignalVoltageandCurrent OutputSignalsandLevelsInputConnections 62.0hmmeterSampteRateandBesponseTimeInputSignalRequirements InputSignalsandLevels79.0utputSignals Data0utputlsolationGPIBBusSignals 030SRo DAC101Talk.0nlyNoController 103GPIB.Controlof3490ARÄi+ -cg- lL L lAsciicodecharacter Binarycode Octal Code To7AddressCodes ProgramCodes A R a C T E R2 3 4 5 6 USELdav F DPrinterand 3490A 349OAandWill acceptdata PrinterwillI X E D N I 1 J GPIB0peratingExamPleOoü 0 f R \ r @üoü@f E \ SetsLREN LOWon bus136Controlby.MarkedCardProgrammer \tD?u6,.. TlE,, . ?5VTo haltprogram,press SroP l CMD?U6 OUTPUT13,30 ..M3R7F@E349OA PRoonnvr LrrruE,ir Or o o l 4 0 z o27 l F r158Input.SignalLimitations 160Sample/Hold.TriggerSignalRequirements152Special.S/H0peratingGonsiderations 156Guard.ConnectioninSample/HoldMeaurements165Initiating.Sample/HoldMeasurement O40 O20OtherOptions 040 030173Using.theTrack/HoldMode Typicaltimereouiredto SETTLETO1 %200 1000vTnputvoltageat M EO F S / HT R I G G E RVoltageactually Measured179Using.theAcquire/HoldMode V eT a Vc-vs T s182Using.50Hz or 60Hz PowerSourceOptions 050or060 RatioMeasrementProcedure$184.RATIOlfleasurements0ption080 $186.ExternalBeferenceVoltagesModel3490A +3 . Generaltheoryofoperation ßüy4I . Intboduction Display RangeandFunctionControl+19 .DCANAL0GCIRCUITS LnputAttenuatorSwitchingCircuits BoottrapCircuit+23. DCAmPlifier +25. OCAmplifierGainOtui Ls, ysSectionIV Model3490A Rt-- c-++IntegratingAmplifier IntegratorcircuitsDual-SlopeIntegration L44. x 20Amplifier ZercDetectAmplifier52AC.CONVEBTEB ACAttenuatorsCurrentSource HmmeterPowerSupplyOhmsconverter +70 ISPLAYASSEMBLYFigure HmmeterReferenceInputProtection DisplayUnitsDataGounter BuffersTimingCounter M I N G10. Block Diagram,Main LogicASM Flow Chart R0,0m11. Block Diagram,Main LogicCircuits Model3490A Tl-90.AlgorithmicStateMachineTransferandZeroDetect Enaele P U T S Enable Oualifierinput To ROM105Input.PolarityStorage +il5. DCSWTTCHNGLoGrC +II7 . ReferencesuppliesRatioMeasrements0ption080 + I 7+ t Powersupplies+128 .FBONTPANELS1VITCHING +I32 . Self . Testfunction 134Logic.Test,No.lPolarityin Ratio Measurements G HTurnoverError,TestNo.3 +137.10V RangeZero,TestNo.2+143.0.1VRangeZero,TestNo.b 4145.x .01Atten.x, 100Gain,TestNo.6+158 .DATAOUTPUTOPTION021 4t74.REM0TEC0NTR0t0PTtoN022 +r9+188.ShiftRegisters LocaURemoteFlip-FlopDauFlag 198GPIB.System+2r GPIBSystemOperation216Acquire/Hold.Mode Figwe 4-23. WaveformslllustratingAcquire/Hold Mode+212.SAMPLE/H0tD0PTl0Nll40or045 Too Sample/HoldAnalogCircuits+23 @ n zJa+z RooCompensation TooKFlgure4-27. Sample/HoldLogic Block Diagram 228Sample/Hold.LogicCircuits+25 Lye e outpurDC Amp 512 615.0 1000v 124.4 154.OExternal Exterml Hold H HehsPage Figurb4-30. Sample/HoldMeasurementSequence Ortoroo OruY --JlIntegrator Waveformsarenot drawnto timeo, o,,rnI?ltExample of TRACK/HOLD MEA Surementseouence I-r Gort +prr2zrs.i Qrs Sre Ero-+ 3r4 Zra Orr RIOLD A1 bHOLD B r l lRecommendedTestEquipment 10knTNTB0DUCTIoN RecommendedtesteouipmentPerformancechecks S7. Performancetests $9. DcvoltmeteraccuracytestPerformancechecks @ \ d15OHMMETER.ACCURACYTESTS L6. PreferredMethod1OO AC Voltmeter AccuracYOhmmeterAccuracy Pebformancechecks ACCOMMON.MODEREJECTIONTESTDcvoltmeterinputresistancetest S24.ACNORMAL.MODEREJECTIONRrr-rrr--r Model3490APERFOBMANGECHECKSO o ? 28AC.VOLTMETEHINPUTIMPEDANCETEST@ \ - O @ @ o o Test OscillatorMU L T I M E T E R h p 3 4 9 O a 6 5 2 aPerfohmancechecks RATI0PEBF0BMANCE0ption 080$38. DC/DCRatioAccuracyTests + 100.000S41.AC/DCRatioAccuracyTest ExternalReferenceInputResistanceTest45GPIB.0PEBATIONALCHECK0ption030 Ext Ref Nput Lnput Display Limits Range VoltageLo v Ranse 1000kO range It l l K oPERFORMANCECHECKSModel3490A +tll Fä il Ir fli Fj FlIiI Ii tti 1üj Li i lR * ! i t F T Rf,lIr i5i 1.+riI i , Il It I l L1,1tiProcedures Adjustment$ 51 .ADJUSTMENTPROCEOURES PowebsupplyadjustmentModel3490AAOJUSTMENTPROCEDURESSectionV Dczeroadjustments$57. Referenceadjustments Dc standardhp- 7a0Bis requiredfor these69SAMPLE/HO.LDADJUSTMENTS $66. OhmmeteradjustmentsModel3490AADJUSTMENTPROCEDURESSectionV 73.0ffsetAdjustment$75. DielectricAbsorptionAdjustment Dc standardhp- 7a0Bis requiredfor thisAojustmentprocedures RatioreferenceadjustmentsLqe OrrraAdjustmentprocedures ColTectPerfobmance TestrecordPerformancetestbecordcontd 001v r 0.oo1vLO.V l O V 1 0 + 1 2 . O O OPerformancetestrecorocontd 50000v Ooooov 120000vExt Ret Fngu V 1 0 00000v 10.üoo 12.0000vIntboduction OrderinginformationNON.LISTEDPARTS ProprietarypartsOtv Reference HPPartNumberDescription Mfr Mfr PartNumber Designation Code B l e 6 1 . R e p l o c e q b l eP o r t sModel B l e 6 1 . R e p l o c e o b l ep o r t s l C o n t d lRcor-@4o Leol-m4ol\ Oty ReferenceHP Part Numbel B l e 6 1 . R e p l o c e o b l eP o r l s C o n t dB l e 6 1 . R e p l o c e o b l eP o r t s C o n r d Qty B l e 6 1 . R e p l o c e o b l eP o r t s C o n t d fAI R3A AIR3@ 28480 2a4AOR t s l C o n t d f E p l o c e o b l e B l e6Aterei alnz? Model 3490ÄDesignationReference HPPartNumber OtyDescription Mfr Code Mfr PartNumberB l e 6 1 .R e p l o c e o b l eP o r t s C o n t d B l e 6 1 . R e p l o c e o b l eP q r t s l C o n t d l Oaa+-rrtt $Reeo-sg DMT4LOONB l e 6 1 . R e p l o c e o b l eP o r t s C o n t d R5ß7A5s4 Sli2 AoaroassyrehotejuxperOty Cr r?21CB a72l ?5r-orloOtv Description Mfr Mfr PartNumber DesignationHPPartNumber Code28aao 2A480B l e 6 1 . R e p l o c e o b l ep o r r s C o n r d Re*-ooar lilZroo rzaaAA Orzo-oo+oDescription Mfr Mfr PartNumber Code Reference HP Part Numbet otvDesignation B l e 6 1 . R e p l o c e o b l eP o r t s C o n t dB l e 6 1 . R e p l o c e o b l eP o r r s C o n t d C8 ?2rlC5 22at DrT4LOaraModeI34904 T u 2 I l 5 uAI3CR8 O O E B R E a K D O I I NR 2 r Model SectionCaeleriaeon Ottgiitrdrei Isolatii Boardassy CableribbonA22API HeiioiB l e 6 l . R e p l o c e o b l eP o r t s l C o n t d 600400 A27RIB l e 6 1 . R e p l o c e o b l eP o r t s l C o n t d A2ARIRfxd Cotp IOK OHX IOI L1Y OBDZ9cl 2 e c t 429C4 29C5 OHn 1trÄ 1/4W I I P 22K otr lot I P l2K OHI lotA3IU3 A32RIReference HPPartNumbet oty Description Designation Mfr Code2211 2211 CB A34YIA39RA 2A4AO 2S4AOT20/o Reference HP Part NumbelB l e 6 1 . R e p l o c e o b l eP or t s C o n t d B l e 6 1 . R e p l o c e q b l eP o r t s C o n t d EIlrDtrs PosT assYIcxssIs assY 284r0 2a+ao 2A480 28480 2g4AO 284aOHPPartNumber Description Mfr Mfr PartNumberReference Xo1Reference HP Part Number Designation OtvDescriptionMfr Code Mfr Part Number B l e 6 l . R e p l o c e o b l eP o r t s l C o n t d lSectionVI MP37 MP23MP7 Designator L M P l a MP1B M P l C MP1D MP2 MP3 MP4 MP5 MP6318x32 29500043Pbeliminarytroubleshooting ACCESSF0RSERVtCtNGTroubleshootingtrees PowersupplychecksTableT-2. PowerSupplyJumperWires 13DC.ANAL0cCtRCUtTSAZAsemblyExchange DCAmplifierChecksDCAmplifierSwitchingGircuits NliiA N D 0 V L E V E L S O C C U R a T I G G E R S C O P E a T a 1 T P K , + S L O P E3I .INTEGRATOR Troubleshooting 33AC. Convebtertroubleshooting37OHMS. Convertebtroubleshooting 21A. -to-C0NVERSt0ND CtBCUtTCHECKSDisplaytroubteshooting Logictboubleshootingsuggestions65SAMPTE/HOLD.TROUBLESHOOTINGTREES ExternalTriggerCircuitGheck59SAMPLE/HOLD.SERVICING Accesto Sample/HoldGircuits22000139 03490-006M03490€6528 O3490-27301AmplifierZerc0ffset 75SCHEMATIC.NOTESRATIO.TBOUBLESHOOTING Logicgatesymbols + 5Truth Table Truth TableSectionVII Model3490A AlphabeticalListingof 34g0A Mnemonics U 4 o tAlu401 Rexe NrscTl-l = lIaFeV-pF Guspb b lPage I1Lgji I1glil Rtl7-r2Iai ott *nn !drp6 ltnt. rync,+.1@ + Input@ @@ Ll?Qxl c207c2or3ttr . n ? 1 t 6 1 l 7 + T i + ?UiL T EQ208 YESQ2O5 t1 swith 3 6 m s i 4AITPK. + Ratio INTR317-1 O2or0205 0208+.JL RaGLfT Q9eSee Notes 299A?rSlI 14,iäFfi 1s17-t6 Ov1--t==- -l6omsLOomsF R7vl lTlrtlt Wath AnDr Rd 15 ot Altrt. JFuldbo+5V Lm r . tt LloTlrtlt Wath AnDr R7l7-r8 Troubl .. hoor A7Ot ?CRIOüa ll#lsriieo,e*l Eff#riIub s!!h I lDisplayTroubleshootingTree T9ltL i l t l T l=LJ. L--l ITa --- itRu*rffifc TEvO 1 o NVWPage O24 oo24 @24 oo24 9032 oo24 t.o24 n 4 n2.4 Lirlt?lt..it \- toresh@rArur5 aIut1 J3t,1 Lop Initiare 6 mre smples Displaysholdread+ 10.oo24 + 60O0.xxOLTl=l S l . lLDr s €@CI6@@e#ffi+ 5 n-s l r S +Otuu U.T,J,l,,t-t Ttj ,o+ i O 5 4 s F +5 ms-l10. Logic Clock TroubleshootingTree 2317-1THttttffi L sl \f -Jt +1 l$E B?tr+1HHHLE r r r r r r r l +ft$b!tooL- l l---,.l Us-l UrlLlt 5 aJtr2cr \ÄÄ Llj. -zooms*#ll-+l.l-r+- zoomsl Pulses1-t.i1 Ea . fTi1i 2s17-26 = b3mtlI. J? FfiAt7A2 GigTlu2, a t1u3,Arl NOI€S=rF Th.-l+ 5vr-r 1o.4ßFFigare7-12.RemoteTroubleshootingTree,Option022 2717-28 RtN*16t12+s-Yml +o.cFStart 9 0 D- 3 3 8Hffi3 338r13. GPIBI/O TroubleshootingTree,Option030 2917-30 Cauil oN . lÖl--.le Hp Porl No O Rev . BPort No V . C D a A27KI Shoulo 8€ CLOSED.SET SAMCorrecn CABLESCORRECTLYGO. to SET S/H Sayitch to TFACK/HOLDMain CIRC-IIT8OAFO. Shouloae T3t17-32 Oft-.*l9 0 D 3 4 3 HOLD. M€ASURE Voltage ATI,l Hp Fort No -66527 Rev.BPort No . O349O Rev . C To A2 X E8Ap-crtot awrcH To rRcx Eogeof .AIPLIHOU TRIGGCR!GIore Sigial G€S High ToteFfi.f-L JüJRävnG.iir 3 f r a73317-34 3490-0Hp Pott No.O349O EXT REF TPC P U TLOW P U T TPC LOWHigh TPC A13CR6G H LOW G H LOW H I G H L O W TPC+ l 0 16. Ratio TroubleshootingTree A12 A17 A22 A11 3 or A36 A34 A35 A30 A33A31 Rearof Instrument € d I11Ral 111+++F+r@a Jj,i @ @.6r#Jälslt*tJl=l Rö*et e J l+ ö Üä,ierispgglg*@ WEE @D@@@@@ ++++++++f++EvvvvvvvvvvvvEfEU 18 a Block Diagram 737FP?fä WüE,Ä,liREFEBETTCEDESIöTATIOtIS CoKnoLelQg Lli-@@@@@@@Ilgt,,a ,,r.i.li Q lA R D OverloadprotectionHovpoverloaoprotectionh Bootstrap P L I F I E R T6aztRuorerzV AA A M P L I F I E R? z e 1 2 z \+lFeedbackattenuator $E? Z r z l391740 Zl-----l9i czo1 @$Y@ Y 6ö Ff$$**H++?o70 f IRrr5- l .FrrBll- l Pt lP r fLp/0 Al I MArNcrRcurrassEMBLYo34so 6650r +ov +rov FRoM Sv---*-l---5vSueeLv +rzV ----d-tr-E +tzv +5V +5v TZV TZV ---b C203 o.33T7v- t7v CR202 1411742Zero Detect Faq h-,,dn Tf,rlXPf*trt*r+9e . E Rblhb-l- --,1Ffie Ott,tItu ?-rvF E R E N Cpeo L a R I T YL O G I C +REFERENCESUPPLYV E R T I N G P L I F I E R Figr7431744 U3o! ----tF E R E N Cpeo L a R I T YL O C I C V E R T I N Gß?i-,- *$1,sE1iV Rrr NililjiLlt ri.ä-i.i Ffi ?ääijO * 9sö $3 1 6 t Powerfrom -5v---dä-!-- IP*333O*. n i!g!?ifiJjscaNBH \------lJ 7451Siorra TimingcounterP .L.iU.B Ll 11 I3g.iStir lT- Il Äiiiirr lir,il..1 Ilir ! o @ @, = T-TI3Bl,J-r Rua --I xmaNne--r LHur R N O N C L E a R R C U I T3bEi,?# Röüärrrr-lFRoMU6iIä ?5SilijL o OtonräTansferenableh F R O MU 9 2 L8d,tshäl 3Yä1..dPA N S F E RA N D Z E R O D E T E C T P U T L a RIT Y StoragePp* @@@@@@@@@@@@ Il JE i i + + i + @@@@@@@*späswIlJ**io**l.Io,l 6ffi-lLffioi Fää-.trto-*totSoue.e,.oloieftil-l Soupr-Ezro-r-oirfr74917-50 Fs-rLErHoLDpi6il-l+ q r \ 9 t r l = lHp PortNo O \ R l220V Toov T20v 240V Rr,rorHERIg t31,.9uIGgARo Ouiro RegulatorTOAa Grppry Optrorr Assr Ozot5117-s2 + l 7 v Regulator+3OV Regulator 3OV RegulatorBCD Hp Port No.O349O-66503REV . B Enable Roaru4oreil=i33SfTHr-+ PolaritydisplayPolaritydisplay Enable U4,uroA N N E R a T O R Scan DecoderFigwe 7-27. SchematicDiagram,Display, A3 Io*FS3l7-s4 Ra FE FA FBR C U I TS I D E = EComponentside S l r q r l Q N a e r , *I .l ,*l ,i , ,ElllRANGEIH**iLRor..RArEcH,rrr., tfl*l R*.,j#Ss -s6 LFaN6E-l s4LFUNcroNl Test=sÄl---l + + 6 DLl l L-sJ+tzv ---fre- +rzv r l +5v --+r5- +5v A6T* .* r*.* *-..uV, cK+ Oot AttenuatorConverteramplifier + r 7Figwe 7-29. SchematicDiagram,AC Converter,A6 S7l7-sFilter Nc corvepreR ourPUT1UeacpalpueHuoll3as Drluod O6t9O-20999Ofqlrod 06t90-O999-l Ei-tr Ifl3?5fö*co,cFlt Bl,,J.li,i Vrx Norlrr,rn CNn.Norr vH GttornrvsnHounor RsnxoArn8rg Crlerueqcs Surq6 Urur8erq RelJouoJrV 0vLl6s LN3UUnC l3unosU3t3NltHO33N3U3J3U Ssoucv 39N lmdNtA22Al ? ? T42242 1M1 ASSEMBLY 3äYäiäT?lTl-?.1..i Fff.ItTrsGooo +l--.rRxrnrr +l8oyJl,flyloSAMPLE/ Hold Triggercircuit Tl,,t17411142 Wro+f-!-l-tr-ourcuaRo Ro ooroorrr coNNEcroRJ6 Ro *.or. ,*r* coNNEcroRJ7L J J l ÄlllUr-l 5 aÄX?,3,.o LEoR Eon Fil!TäläfQ U E N T I ALO G I C FrequeLogtc Clock Frequencydoublerdelay Data Multiplexers+-n Outguard# , . , J 9 \ I C E N I a N ri fr. FDAraFLAG 2eII G a N E +5vr---1i1+4W S H I F TR E G I S T E R S Guaro+ 4 l Oi---qoZfu*-rrot 74317-64Oo-1 Al2 Hp porttJo,03490-66512 At77 a + s LO REMoTEnruruurrcraronLOCAL/ Remote FLIP- Flop LOCAL/REMOTERHs tl su31sr93u L-----\Lockdelay AJtlilo-*il1.iI91 .-Ct FlIto*.- -7u u5\ .,- I \ Onr9nvu0 rdtIlnn-u3x3 Rns+NBId Ouvngmo l,ssvZ r Hp Port No To A2 C D E F H J K L18F8#Äi..* l F8fi8R c * o lI l r g S LlooR34 46.4 K If U8 is BAD.OUTPUTWAVEFORMS Will 8E Loadeddown?? l9Li9i.-.? 747l7-68Rt\u ? * t o RrreenrroR€l-----19 U l HPorf No . O349O Rev . C Ori Ö1,*.-F Iäo*,j.,lj!,jTABu?,.ffiIi O 1Bs-u M P L E /H O L D T R I G G E R CI RC U I T SA L I F I E R M U L T I P L E X E R Hmtb74917-70 ?.46,f?6Tr%r,i Jil CRsOEo o r a o r B orc o r o o t M SDoTo I Line Multiplexef Extebnal Triggef Compa Ouoorn REcErwCOPYRIGHTt973 by Hewlett Packaro 36.BlockDiagram,3490AGPIBVOCircuits 7117-72 FC CompanyL24-----r3-l Or5 Hp Port N o . O 3 4 9 O 6 6 5 3 4 R e v .AHp Porr N 0 3 4 9 0 6 6 5 3 6 Rev a N DTot Orurr9iorrrol98rfiilVRnvH ornv H Or6rnrv CucxJ Rvu . Hccr RvrrxrJNorroNnr RfilljErtv Rzr Slinur SosrTt lrstl3ssv 83x3ldlrln$lRaI ,tuf,r 3+r7v Uui-,f +svS K Tzv--Le f -rzv+Fol O r?,il9Bälooo R l 430?oti.lä?fr?ox?Ei6q*1Eefi&x?ot U 1Ä33a Uu +svRl?ulF5-ß-olqrroil ETGpr 03490Ä3a GLALre a HRsr o7517-76 ? lFbÄiÄÄ 2 -ixaorJ Or.nroro Orrl assv 2 l432 Ri------lL3-JrIt TLr.sl-------l Hp porr No.03490-66532Rev aLrrx i--= 20A%ll?i8*o1lg9lRor-oos---Lrs-r-oosl22LEoP-rJi,19#E8ffi0 22fr,.#.!äi$o LsRe--1i-,r 20 loo.tfliloX!3VotoLRMrlOoorf Iä.ggx3!.zzI I z CvvH r Roro-r-,@Fruox Ilr IrYJg.oz 9I3?ü?591.ZZSa-oosl.J?il!.31..Ä.OZ Nzr Rnzr RE+TT----l Hp Port No.oi49o-6653t RevAR K o CR3 CR5Oo-1--5 Rvvr+lvvH Vrvossv Ovvx-+ Losl 03rvu3/v\0drddns s3t+rzv1 + 5 V rO L a T E D P O $ / E RS U P P L I E S + l z v lLsoroH 08vn9lno u38ron08vo8 o € t 6 0 -9 9 s s rSruvdroN Orlsr N0rrcn00urNllJeu ZzlosroTluzvtJzv Inzvlrncrrc Ppv Pue gluzv ot TlzGszzov Trzl9o8oov O ö tÄ ä i Eää3Uorlces ÄääToot lsn tosütünlYrnilYw Ltzro ZzzwU t l u n . p Owl v N n l v r r n u r u sT r t s l Toot rstr JosutrnrrvtnNvu,nultuot . p ÄrxIlf?#r,$AJ,ff333..3#ä Ocqrrus........sarauvsor.rr Ss0ooLvulNlc oNvnos.HJ rv vcluSl Sttvs ? 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