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Tektronix 494AP service manual O a o o o o o, A a o o o o o o o a o o o o o a o o o o o

Models: 494AP 494A

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PerformanceCheckprocedure- 4g4A/4g4ApServiceVol. 1

TM 5OOMain Frame

Flgure4-3. Testequipmentsetupfor checkingcenterf.equencyaccuracy.

Tabte4-2

		CENTER
		FREOUENCYACCURACYCHECKPOINTS
		(1srLO UNLOCKED)
Band	Approximate	KeypadEntry	Frequency
Band	Frequency	CENTERFREOUENCY	Span/Div	MaximumError
1	0.5GHz	Fundamental	210kHz	.0.272(57.05 kHz)
	1 . 0GHz	Fundamentalx 2	210 kHz	t0.272 (*57.1 kHz)
	1 . 5GHz	Fundamentalx 3	210 kH,z	.4.272(57.15 kHz)
2	2.0GHz	Fundamentalx 4	1 1 0k H z	10.338(*.37.2kH2)
	3.5GHz	Fundamentalx 7	110kHz	i0.348 (*37.35 kHz)
	5.0GHz	Fundamentalx 10	'110	*0.341 (137.5kHz)
	5.0GHz	Fundamentalx 10	kHz	*0.341 (137.5kHz)
3	6.0GHz	Fundamentalx 12	1 1 0k H z	*.4.942(+37.6kHz)
	0.5GHz	Fundamentalx 13	1 1 0k H z	,4342 (37.65 kHz)
	7.0GHz	Fundamentalx 14	1 1 0k H z	:E0.343(*37.7 kHz)
4	7.5GHz	Fundamentalx 15	1 1 0k H z	0.616(67.75kHz)
	12.5GHz	Fundamentalx 25	1 1 0k H z	0.620 (68.25 kHz)
	18.0GHz	Fundamentalx 36	1 1 0k H z	0.625 (68.8 kHz)
5	18 . 5GHz	Fundamentalx 37	214 kHz	.0.423(88.85 kHz)
	20.0GHz	Fundamentalx 40	210kHz	!.0.424(+89 kHz)
	21 . 0GHz	Fundamentalx 42	210kHz	*0.424 (i89.1 kHz)

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Tektronix 494AP O a o o o o o, A a o o o o o o o a o o o o o a o o o o o, Center Freouencyaccuracycheckpoints

Contents

Tektronix Page O o o o o o o o a o O o o o o o o o o Releaseof CopyrightO o O o o o oO a a o o o O a o o A a a a aO o WarrantyO o o o o A a a a A o a o o a o o A o 494A/494APServiceVot.1O o A o o A o o o o o o oO a o o o a o O o o o o o o 494A/494APservice Manuatis divided into two volumesO a CONTENTSGonr O o oO a o o o O a o o oO o t A a o o o a o oO o a o o o O o o o o oO o a o A o o o o o Powersupply O o o o a oA o RAMVOLUME2 494A/94APServiceVot.1O o o o O t494A/494APServlceVol Preselector P3035on theVideoProcessorboard Rejection494A/494APServtceVot.1 A o O oO o o Simplifiedschematicof harmonicmixer Basicblockdiagramof a -rNsynthesizer494A/494APServlceVot Simplifieddigital-to-analog ConverterO o a o O a oO o o 944/494AP Service Vot SpEctFtcATloNsOptions 22 Waveguide MtxERSCHARACTERTSTTCSDo Not ServiceAlone O o o oO a o This ManualO a o o o A o o o o Sedon 1 4g4l494Ap Servlce,VolValue. O a O o O o o oSEL Mlxer 18to 26.5to 33 to 490U 40 to WM 49OVWM 490E 490W 10to 170GHzO o A o Electricalcharacteristics O o o oO o a o o o o A o o o a Freouencyrelatedcharacteristics +tAF. x BEF + 20 + 4NHzCharacteristic Performance Uirement Normal Accuracyand Ldentical ResolutionResolution FrequencySpan/Div OverallRange MinimumSpan/Div KHz 300 Hz 30 Hz 3Hz Typically 30 psldivision of pulse tudeFreq Freouency RelatedcharacteristicsE o o 33-s0GHz O o a eO a o s Accuracy Steps 10 dB/divLogMode Accuracy Normal or Delta Mode ReferenceLevel SEt With Data ENTRYpush ButtonsDisplayDynamicRange Accuracy RF Attenuatol Range Accuracy Dcto 1 GHzDelta a Mode provides differential Performancq RequirementDecadeTransitions 100 DBcAmplitude C oA07-100 Inputsignalcharacteristics ExternalmixerO a o e O o o aSpeclfication- 494Al4g4ApService,Vol J104 ACCESSORy Pin4 Pin51stLO OUTPUTpower UalrbratorcAL ouTOutputsignalcharacteristics TeristicsO a o o LineSpeclfication- 494A1494APService,Vot.1 Temperature Operatingand HumidityCE03-15 kHzto 50 MHzpowerleads CS02-50 KHz to 400 MHz power F u l l l i m i t LeadsSrDEvtEw O o o o o o o15.05 28.85inches232x 392x 732.gmm O c o A a o o Unpackingand INITIALINSPECT6N 494A1494ApService,VotO a o o o o o a o o A o a o o o Connectingpower PowerSourceand power RequirementsInstallation- 494A/494ApServlce,Vol O o o A o o o o o o oO o o o o o o O o o o o a o O o a o o o o o oO o a o o o O o o o o o o o O c o O a o o Secton 4g4Al494ApServiceVol O o o o o o o o o o o o o o o o o o oEouipmentreouired O o o o o o o o o o o o o o o o oO o o o o o O o o o o o o o o o o o o o o o o o o o Accuracy*0.2s dB ioLodB/soolttffi LrlrGtr Eouipment ReouiredPreliminarypreparation MAX 10DB/ 2ODBPerformanceCheck procedure 4g4Ll4g4ApServiceVol O o o o o o o o o o o oTrME/DrV PerformancecheckprocedureO o a o o a o o o o o o o o o o o o o o o o o o o o a O o o o a o o a o a o o o TIME/DIVAUTOSPAN/DIV TME/DV Auto VertcaldtsplayO a o o o o o A a o o oA a o o o o o o o a o o o o o a o o o o o Center FreouencyaccuracycheckpointsO o a o a A a o o o o a o o o O o a o o o o o o a o CheckCenterFrequencyStabilitvAutoresoln on VerticaldtsplayResolutionbandwidthauto O a o a o a o a aO o a o o o o o o a o o o o o a o o TME/DVAUTOSPAN/DrV TlmeMarkGeneratorMarkerOutput 50 Hz 20 msO o a a o o o a o a o a a o o a o a o o o o O a o a oAutoresoln Reflevel 10dB/DtvA o o o a o o A o a o o o aA a TimeAccuracy C.**qyegp WithinS%oftherateserecitJiCheckResolutionBandwidth and shape Factor O a a o a o aO a o O o a o A o MinnoseQlglptv to 50Hz, andVERlCnl.drdpr-ry O o a o a A o o o o o o o o o o O o o o o A o oSPAN/DV MIN RFATTENdBNro sMAooaeten LowLosscoAxcABLEwrrx sul courEEroid0 GHz 7.4 GHz 9,4 cA o o o o o a O o a o o A oO o a a a A o a a a o a o o a O o o o Narrow Videofilter PEAK/AVERAGEO o a o o o A o TmeidivautoPart Narrowvideofilter TME/DV Auto PEAK/AVERAGEPerformanceCheckprocedure- 4g4Al4g4ApServlceVol.1 O o aTrME/DtV TestsettingsO a a Vertical Display 21BIDIVNarrowvtdeofilter TIME/DIV Auto15.RF attenuato. test equipment setup for 50-60 dB step O o O o aA a a o a o CentebfreouencyDisplay WidevideofilterDB/Dtv O a a o o o o a o A o o o o oA o a O o a O a a12s 103 TrrFreorange PerformanceCheck procedure- 4g4A/4g4ApServiceVolResolutionbandwidth 100 kHz O a CheckLO Emission -70 dBmor tessAutoresoln OtsplayPerformanceCheckprocedure- 4g4Al4g4ApServiceVol.1 18.Test equipmentsetuplor checklngharmonicdistortion@o@o@g@@ EXTPerformanceCheckprocedure- 4g4A/4g4ApServiceVol. l ResoluttonBandwtdth 1 MHz Verticaldisplay LIN Triggering INT TIME/OIVTME/DV EXT VertcalDtsplay 2 dB/DtV Rrttl OptioninstrumentsI3fil l t r l CheckHORIZOUTPUTSignatLevelMAX Hold SpanidivDtsplay Verttcal Tmeidiv Auto PEAK/AVERAGEComb Generator Mooule Q15oit riline UllTR5O2 OutputLevel -dBm Var dB Dot Intensity OffA o o o c GpibverificationprogramO o o o o o o a o ReturnReturn 5OOOREM49XPGPIBVERIFICATION Program 5O9OINPUTT$O a o a o r 8070INPUT 8100PRINT9040PRTNT10OMSGEOS 1OO1OPRINTSELECTEDDEVICE-CLEAR...SDCA o o O c 16000REM Talkonlymode 16010PAGE16050PRTNTTALK Jtestng only 16060INPUT Onlymode FailANDRENREMorE JGPIBvERlFlcArtoH Cotapr-erEoJJLrsrEN!TALKTLF OCrnoiness MessageO o o o o o o O o o o o o o o 19300cosuB19390Generator 19530REMFAILUREDECISION Handler 19540PRINT!SELECT a UDKStancdischarge Can DamageSemiconductor Many Componentsused ThisinstrumentAdluctment Procedure- 4g4A/4g4ApServtceVot A a oPreparation 7luSelectorswttch Adjustment Procedure- 494A/494ApServiceVol O o o o o o o o o o o o o o o o o o oO o o o o o o o o o o o o o o o o o o o o o o o o O o o o o o o o o o o o o o oRrqm TIME/DIV MNLAdJustmantProcedure- 494A/4g4ApServiceVot. .l TIME/DIVAUTO TriggeringfreerunAdiustment Procedure- 4g4Al4g4Ap ServiceVol Test equlpment setup for adiusting the D€flection AmplifierTriggering EXT Adfustment Procedure- 4g4Ll4g4ApServtceVotO o o o o o o o o o o o o o o o AdJustmentProcedure- 494A1494ApService Vot O o o o o o o o o o o o oO o o o o o o o o o o o o o o o o o o o o o o o o o OuFur GarnR1033 nrorsO o o o o o o o o o o o o o o o o o o o o o Adjustnent Procedure- 4g4A/4g4ApServtceVotO a o O o o o o o o o o Adjust Log Amptitier =?lRPlo3s-.8 R1012 R102S,R1030AdrustmentProcedure 4g4Ll4g4ApServtce Vot @o.@@GPtO o a o o o o o o o a o o o a o Filrcsotocr Adjustment Procedure- 494l4g4Ap ServiceVotA o o o a o o a o o o o o o o o o o o o AdJustmentProcedure- 4g4l4g4Ap Service Vot O o o o O a o o oA a o A o O o o LNorE-lO o a o o a o o a a o o o o o o o o o o o o o o O o o o o o o o aSETTTNGS2 RcsctTion Bandwidth Tionbandwtdth$o o3 $o O o o o a aO o a o a o a O o o o o a o o o a o a o o oOotHi O o o o O o o o oAi kHr O a a a a o o o o a o o o o o o o o o o o O a o a o a o o oMIN RF Atten Triggering AutoAdjustment procedure 4g4Al4g4ApseMce vot O a o o O o o a oFrequencyrange OTi#iO o a AdrustmentProcedure- 4g4A/494Ap Rplo?2/hR1OS4 Frequency To 3.0-7.1 GHz, setAdfustrnentProcedure- 4g4A/4g4ApServtceVol Ot oA o o o AdJustnentProcedure- 494A/4g4ApServtceVot A o o o o o aLt. a o o a o O a o @@rSnrnasrzen @ RpzoroO o o o o A o o o o AdjustOption0Z VR BandLevetino Optioninstruments OnlyRFouT OUr AdrustmentProcedure- 4g4A/4g4ApServlceVot,IO a o a o o o o o Relativesusceptibilityto Staticdischargedamage IntroductionSectfon6 494A/494ApServicc Vot.1 Maintenance- 4g4Al4g4ApServlce Vot 367-028s,00 TroubleshootingAidsMaintenance- 494A1494ApServiceVol Page Diagnostics Troubleshooting Using TheerrormessagedisplayTUNINGFAILURE- 2NDLO Powersupplyoutof Regulation TUNINGFAILURE- 1STLO O a o a oMalntenance- 494A/494ApServlceVol TPl034 GroundRefer€nceDesired Mixerfreo1STLO Setnngaccuracy Auxiliary SynthesizerO o o o o o O o o o o o a 2NDLO Controldiagnosttca Offset SET.540.672KHZ Ting Accu RacyPHASELOCKFAILURE- 1STLO Lockdisabled Press Help Enable PressshifttoexitEnabledpresshelpto Disable StrobefreqO o a o e Shift PulsestretcherMalntenance- 4S4Al4g4ApServtceVol O o a o aTracemodes Corrective Maintenance Maintenance- 494Al4g4fupService VofSelectedcomponents 1R1020A46A1Rl015 446A1Rl010 O o o o o a o o o o o o A a SERvIcING TooLs FoRBoARDTffi3.i*,o= MouNTEDcoMPoNENTsMafntenance- 494l4g4Ap ServtceVot.1 HorAlr HepairTerminalO o o O a a Maintenance- 494A/494ApServtceVot.1 Diode Color CodeO o c a o o O o E a o o o c o o A o o a o a o o Replacingassembliesand SubassembliesO o O o o o O o c o o o o a A30A57-GPIB InterfaceLlrxER Maintenance- 494Al4g4ApServiceVot.1Sr3- ltI O o o o o o o o o o o o o o o a o o o o o Page Main PowerSupplyModule Removal EAUloNl@o @@tr\ UpJMaintenanceadjustments O o a o o o o o o o o o o O o o o o o o o o o o o o o o oO o o o o o o o o o o o o O a o o Malntenance- 494A/494ApServiceVolEouipmentrequiredforreturnlossadjustment A o o o o o o o o a o O o o o o o a o o o Mafntenance- 494A1494ApServtceVot.1O o a a o o o o O o o o o o o o o o o o a o o 829lr/lHzCoaxial Band-passFitterAdjustment O a a o a o o a a a o a o a o o oO o o o o o o o o o o O o o o o o o oMaintenance- 494l4g4Ap ServlceVot O a o o O o o o o a o o o o o o o o o o Malntenance- 494A/4g4ApServiceVolO o o o a o o O o o o a o o 17.Corect re3ponsetor g29 MHr tlrlrd and fourth resonatorsO a o o O o o o o o o o a o oO o o o o o o o o o o Calibrated100 MHz.with +20 kHz accuLr.fry- gllpin . DoNorposinouexy op O o a o oA o o O o o Maintenance- 494A/4g4ApServtce Vot FfiffiMaintenance- 4g4Al494ApService Vot.1 O a o a o a o oA a o a o o o Mafnfenance- 4g4Ll494ApServtceVot.1O a a o o a o o A a o a o o o o o Maintenanco- 4g4A/4g4Ap ServlceVol R404OFine TuneRaneeO a a o o o a o a o o O a o aA o o FREOSPAN/DV MAX O o o a a o o Malntenance- 494A1494ApServtceVolStart Spur Amplttude Capableof measuring0 Ogmit 2 t\,tt-tzFREQSPAN/DIV MAX Autoresoln on O o o o a a oFREQSPAN/DV MAX Range FREQSPAN/DIV MAX Autoresoln ReflevelMinrf Atten TimeidvF t HhFr $ fMalntenance- 494A/494ApServlce Vol Malntenance- 494A/4g4ApServiceVot A o O o o o a o o a a oLl,l Jdl ttMaintenance- 494A/4g4ApServtceVot.1 SettingsA a O o o o aO a AddressBusTest C o o o O o o o oO o o o o a o SwtTcH Maintenance- 494A1494ApServiceVot..t0xxx U302s Troubleshootingon Instrumentbus Maintenance- 494A/494ApServtceVol Instrument Bus TestO o o o o a o o Yr iffiIADDRinstrumentbusaddresscommand Responseto ADDRquery DATAinstrumentbus data commandCombinedADDRcommandand DATAcommand Malntenance- 494Alttg4ApService VolDATAinstrumentbus dataquery InstrumentBusRegistersX x x 0 0 X x x 0 1 X x x 1 0 InstrumentbusregistersDB7-DBO DB3-DBOO a o A e Rfinput DBO DB5-DBOExtmixer DB7-O DB3-DBO O o o a aDB2 Vco LSBDB6 DB2 DBO DB2-DBOFront-PanelRegisters OFF Maintenance 4g4ful4g4ApService VolTapedatatransferprogram O o o a E oA o o o A o o o a o o FinishedO t a O o o o a oO o o O o o o a O o t O o o a a o O o a a o o o a o a o o o o a o o O o o o O o o a o o o o a o o o o o o o o A o o Rollow Secton 494A1494Ap Service,VotPr signals. Blockdiagrams Showingmore O o o o O a o o a o o o o o o o o o a o o O o o o o o Page RF InterfaceCircuits Diagram28 Lst ConverterDiagram12RF Input TheRFINPUT50 connectoracceptstheinputsig O o o o o o o o o oO o o o o o o o o o o o o O o o o o a o o o o o o a o Andpassesdtttreiueniy oroPage O o o o o o O o o o o o o Theoryof Operafon 4g4A/494ApServlce,VotTabte7-1 2NDCONVERTERIF Selection2472MHz2ND CONVERTERDiagram12 O o o O o o a o o o o o o o oO o o a o o o o o o o o o o o CAvrrYPosr+l+Theory of Operaton 4g4A/4g4ApService, Vol. .l Ou-Too---lPrecision ExternalCabtes2182MHz PHASELOCKED2nd LO Diagrams13 O o o o O o a o o o o O a o O a o oO a o O o O o o o O a o a o o o o o o o o a o o a o o VcoMHz 2nd Converter Diagrams15 O a O o a oO o o o o o o a o o o a o o o A o a oO o a a o o o Switchandamplifier A o a o o o o o oOtr 829MHz2nd ConvO o a a a o o o O o o a Page O o a a o o a o o o O o a a o o o o oA o o a 110MHztF AMpLtFtERDiagram17Theory of Operation 4g4Al4g4ApService,Vol 110MHzFTLTERS Diagram17 3rd CONVERTERDiagram17A o o o O o o o O a o A o o o o o oREFERENCELOCKDiagramS0 O o o O o a o O a oO o A o o o o o o a VariabfeResolution Diagrams19, 19,104Id,and BandwidthselectionA o o o o o O o o A a o o o o O o O o o BandLevetingCircuitDiagram20 GalnRequiredA o o O o LOc AMp and Detector Diagram22 Fn9 input signat.at a nominal14 dBm, is appliedO a o o a 3160316 316 684O o o A a o o Theory of Operation- 4gA/494Ap Servtce,VolTheoryof Operation- 4g4ful4g4ApServtce,Vot VIDEOAMpLtFtERDiagram23Functionaldescrtption Theory of Operaton 494l4g4Ap Servlce,Vol 12. Selecdon ol display positlon on lhe log scaleVtDEo PROCESSORDAGRAM24 Theory of Operaton 4g4Al4g4ApService,Vol Ffi rffiO o C3026 C2016Filtercomponentcombinations DB2 DB3DlclTAL STORAGEDiagrams25 Sytemis desisncto opn IT,r-.,.P.,9?O o LI l Theory of Operadon- 4g4N4g4Ap Servtce,Vot.lPage O o O a o o O o o o o O o o o o o a o o o Theoryof Operafon 494A/4g4ApServlce,VolO o e O o a a A o a a o oClisplayappearsas a bright dot sweepingacross DEFLECTIONAMpLtFtERSDiagram27500 digitalstoragesweep positions. The resulting O a o o O o o Axisand RF Interface DTAGRAM28Enables Currentdrivers TransferswitchdriverO o O o o a o o A o O o o o o o o o O a a MHztF high Stateor F829 MHzlF towstateO o A o O o o o O o a o HTGH,VOLTAGESUPPLYDAGRAM29O o o o o O o o o o o o CRT READOUTDAGRAM30Lf BLANKMSBof the characterdatais not set,the GEN RUNNTNGflip-flopunassertsR/o oFF throughoRTheory of Operatlon 4g4A/4g4Ap Service, Vol Theory of Operation- 4g4Ll4g4ApService,Vot. l O o o o o o o o o o o o o o o o o o o o o o o o o o o oZo-cou I lF-€ OFFTME u1055-dX x x x x x X x o o o o oX o o o o o X . o o o o oO o o o o o o o o o o o o o o o o o o o o o o o o o o o o Theory of Operation- 4g4l4g4Ap Servlce,VolOe o \i oAddress of Ascii code Skip bit Blank character 58O O o o a o o o o a O o o o o o o o O o a Theory of Opera$on- 494l4g4Ap Servtce,VolA o o o a o o o o o O a o o o o o a o o SWEEPDiagram31Theory of Operaton 494A/494ApService,Vol D4 D3 D2 D1 do A o o O a O a o o o o o o o o20ssldiv 100 Theory of Operation- 494A/494ApService,Vol Tabte7-12 O a o o a o o o a o o o o oTriggerselectionmodes TriggerMode Freerun Internal Ext€rnal Line TableZ-13A o a o o o o O a a o a oA o a o A a o o o o a o o o o o O o o o o O a A o o o o o o SPANATTENUATORDiagram32 A o A o o A o o o o a o oCalibrationcontrolselectioncodes Theory ol Operaton 4g4A/494ApService,Vot20k 1st LO DRTVERDiagram33 O o o o a a a o o A o o a a aXl K3065 x0.1 K3075 x0.01 K4072 X0.01DB7 O o a o o o o o O a a o a O o o o o o o o o o aDB4 O o a a o o o A o Preselectordriver Diagram34A o O o a o a o a o O o a o o o o oU5031OUTPUTLINES Span Volts Span VoltsPreselector Freouencybands Theory of Opera0on- 4g4\l4g4Ap Servlce,VotTabteT-18 A o a o o o o Centerfreouencycontrol DIAGRAM35O o A a a a o O o o O o a O o o Figure Z-2S. DAC Varlance graphTheory of Operaton 494l4g4Ap Servlce,Vot O o O a o o A oRuooeour O o o a o ADDRESS70 FormatsO o a o o o a o C o a o O o o o o o o oFunctionaldescription Theory of Operation- 4g4ful4g4ApService,VotO o o O a a HARMONICMIXERDiagram36 Theory of OperaUon- 494Al4g4ApServtce,Vot.1 AUXILIARYSYNTHESZERDiagram37O a a A o o Theoryof Operation- 4g4A/494ApService,Vol O o o o o O a o o o o o a A oPage COUNTERBOARDDiagram38 Phaselocksynthesizer Diagrams39 O o o o o e O e o o o o o o o o o o oO o o a U2025OUTPUTLINES O e o o a o o o o o o o o o Page DIGITALCONTROLDiagram9 Theory of Operation- 494l4g4Ap Service,VotTheory of Operation- 4g4Ll4g4ApServlce,Vol 30. System memory mapTheoryof Operation- 494A/494ApServlce,Vol 31. UOaddr€ssspaceTheory of Operation- 4g4hl4g4ApService,Vol O o c oPage Bit A a O o O o o o o o o a oPollbits A o A a o O o a o o o o oLunr A a O o o o oFf nsrrrcrr qrs crccr O a o O a o o o o o o A a O a o o O a o O o o o O o o a o A o oO o o o o o o o a o o o o o o o o O o o o o o o o o a o o 100101 CoL 102Main power Supplyfurnishes all the regulated O o o o a o O o o o o o o103 Theory of Operation- 4g4A/494ApServlce,VolTheory of Operaton 494A/494ApServtce,Vot O a o o o o o o o a o o o o oO o o o A o o o o o Oenanon*l 105Theory of Operation- 494l4g4Ap Servlce,Vot Theory of Operation 4g4Ll4g4ApService, Vot 106 +5 V Voltage ReferenceSupplyO o o o o O a a o a o o a a a o o o a o Determiningcomponents 107Page Swtss Opl ONsRcV/134 O a o o o o o o o o o O o o O o o o CalibratorOutput cALOUTA o o o o o o o Freouency O a o o a o o o o o o o a o o o o o o oO a o O o o o o o o o o o o o O o o o a o o o A o A a GoesanoffiSymmetry OoultnGffiA o o a o o Vtdeoimarker A o o o o a a o o o a o o o oGeneralterms Gfoesary- 494l4g4Ap Service,Vol O o o o o oFrequencyterms AmplitudetermsA o a o o DigitalstoragetermsO o a o o o O a a o o a O o o o oRevisioninformation Manual Part No G556O-00 Flrst prtnilng JAN1987 RevleedO o a a o a o o o o o o a o o O o o o a o 12sSENSmVTY InstrumentO o O o a o o A o a o Efr/sNO o o A o a o o O o o o o o o O o O o o o Product see llst Dale2-22-88 Chg. Ref M63911DeflectionAmplifiertestpointsandadjustments Page5 ol Productsee llstO a o o o o o o o o Instrument Manual Performance CheckprocedureO o o o o O o a A o o o O o O a a Instbument Partno ADDO o o o o O o o o a Date 5/u9o Perfrmanceheck pRocEDURE change stepr r as foltowsProduct494N4g4Ap ServiceVol O a o o o ServiceVot.1 O a o o o oDate 6/1190 Product494N494ApRHI LO0Vehticaldisplay Peaiaverage+i\ + \Resolution Verncal Freouency Bandwidth Display Spaivdiv MHz DB BandwidthMHz 10dB 100kHz DB Bandwidth Limits 60dB MeasuredResolutionbandwdith PartiMinnoise Verticaldisplay Narrow Videofilter TIME/DIV Auto PeaivaverageA a a PeavaverageSpecification Tercfgnix CHANcE INFoRMAnoNPerformanceVerification Check1 dB CompressionpointFREQUENCYSPAN/DIV 1 MHz RESOLUTIONBANDWTDTH1 MHz Product SeeLlst Date11SpectrumAnalyzerUnder Test Ref. C1-991A o a o o O c