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Tektronix 494AP service manual Tercfgnix CHANcE INFoRMAnoN, Specification, PerformanceVerification

Models: 494AP 494A

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		MANUAL
	Tercfgnix		cHANcE
	Tercfgnix			INFoRMAnoN
	CETvitTTEDToEcEu.E^pE	Date: l1_Sep_gl	ChangeReference: C1-991
	Product: SeeList .	Date: l1_Sep_gl	ChangeReference: C1-991
	Product: SeeList .		ManualPartNo.: SeeLisl
		DESCRIPTION		ProdrrctGroup 2E
	Effectivefor Alt SertalNumbers:

492PGM 070-7556-00,ServiceVotume1

494NAP 070-5560-00,ServiceVolume1

495/P 070-5084-00,ServiceVotume1

497P 070-7679-00,ServiceVolume1

2753tP 070-6306-00,ServiceVolume1

2754tP 070-6097-00,ServiceVotume1

2755tP 070-6032-01,ServiceVolume1

2755NAP 070-6032-01,ServiceVotume1

2756P 070-6318-00,ServiceVolume1

Makethe fotlowlngchangesIn your ServtceVolumei manuat:

Section2 - Specification

Changethe 1 dB Compressionspecificafionas shownbelow.

Measuredin MinNoisenrodewith no RFattenution.

Section4 - performanceVerification

Addthetoilowing
equipment
	to the Equipment
		Requiredtabre.
PowerSptitter(Femate			TEKTRONIX
SMA			TEKTRONIX
Connectors)			PartNo.015-0565-00
Connectors)			(1 dB Compressioncheck).
20 dB Attenuator(SMAConnec_			(1 dB Compressioncheck).
20 dB Attenuator(SMAConnec_			TEKTRONIX
tors)			PartNo.015-1003-00
tors)			(1dB Compressioncheck).
			(1dB Compressioncheck).

Replacethe 1 dB compressionPointperformanceverificationprocedurewiththefollowingprocedurg;

Check1 dB Compressionpoint

,,t i :i;lv

: , ;

0 dBmin MINNOTSEmodefor Bands1 through5.

a. Connectthetestequipmentas shownin thefollowirqfigure.

Page 1 ot 2

Image 333

Tektronix 494AP Tercfgnix CHANcE INFoRMAnoN, Specification, PerformanceVerification, Check1 dB Compressionpoint

Contents

Tektronix Page Releaseof Copyright O o o o o o o o a o O o o o o o o o oO o o o o O oO a a o o o O a o o A a a a aWarranty O o o o oO o A a a a A o a o o a o o 494A/494APServiceVot.1 O oA o A o o o o o o o O a o o o a oA o o 494A/494APservice Manuatis divided into two volumes O aO o o o o o o O o o CONTENTSGonrO a o o o O a o o oA a o o o a o o O o tO o a o o o O o o o o oO o a o A o o o o o O o o o a o PowersupplyA o RAM494A/94APServiceVot.1 VOLUME2O t O o o o494A/494APServlceVol Preselector P3035on theVideoProcessorboard RejectionA o O o O o o494A/494APServtceVot.1 Basicblockdiagramof a -rNsynthesizer Simplifiedschematicof harmonicmixer494A/494APServlceVot Simplifieddigital-to-analog ConverterO a o O o oO o a o SpEctFtcATloNs 944/494AP Service VotOptions 22 Waveguide MtxERSCHARACTERTSTTCSO o o o Do Not ServiceAloneO a o This ManualO a o o o Sedon 1 4g4l494Ap Servlce,Vol A o o o oO a O o O o o o SELValue. WM 49OV Mlxer 18to 26.5to 33 to 490U 40 toWM 490E 490W 10to 170GHzO o A o O o o o ElectricalcharacteristicsO o a o o o o A o o o a +tAF. x BEF + 20 + 4NHz FreouencyrelatedcharacteristicsNormal Accuracyand Ldentical Resolution Characteristic Performance UirementResolution FrequencySpan/Div OverallRange MinimumSpan/Div KHz 300 Hz 30 Hz 3Hz Typically 30 psldivision of pulse tudeFreouency Relatedcharacteristics E o oFreq O o a e O a o s33-s0GHz Accuracy Steps 10 dB/divLogMode ReferenceLevel SEt With Data ENTRYpush Buttons Accuracy Normal or Delta ModeDisplayDynamicRange Accuracy RF Attenuatol Range Accuracy Dcto 1 GHzPerformancq Requirement Delta a Mode provides differentialDecadeTransitions 100 DBcC o A07-100Amplitude Externalmixer InputsignalcharacteristicsO o o a O a o eJ104 ACCESSORy Pin4 Pin5 Speclfication- 494Al4g4ApService,Vol1stLO OUTPUTpower UalrbratorcAL ouTTeristics OutputsignalcharacteristicsLine O a o oTemperature Operatingand Humidity Speclfication- 494A1494APService,Vot.1CE03-15 kHzto 50 MHzpowerleads CS02-50 KHz to 400 MHz power F u l l l i m i t LeadsO o o o o o o 15.05 28.85inches232x 392x 732.gmmSrDEvtEw O c o A a o o 494A1494ApService,Vot O a o o o o o a o o A o a o o oUnpackingand INITIALINSPECT6N PowerSourceand power Requirements ConnectingpowerInstallation- 494A/494ApServlce,Vol O o o A o o o o o o oO o o o o a o O o a o o o o o o O 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 O o o o o o o o o o o o o o o o o o o Secton 4g4Al494ApServiceVolO o o o o o o o o o o o o o o o o O o o o o oEouipmentreouired Accuracy*0.2s dB io O o o o o o o o o o o o o o o o o o o oLodB/soolttffi LrlrGtr Eouipment ReouiredMAX 10DB/ 2ODB PreliminarypreparationO o o o o o o o o o o o PerformanceCheck procedure 4g4Ll4g4ApServiceVolPerformancecheckprocedure O 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 aTrME/DrV TIME/DIVAUTO O o o o a o o a o a o o oSPAN/DIV TME/DV Auto VertcaldtsplayA a o o o O a o o o o oA a o o o o o o o a o o o o o a o o o o o Center FreouencyaccuracycheckpointsCheckCenterFrequencyStabilitv O o a o a A a o o o o a o o o O o a o o o o o o a oAutoresoln on VerticaldtsplayO a o a o a o a a ResolutionbandwidthautoO o a o o o o o o a o o o o o a o o TME/DVAUTOTlmeMarkGenerator SPAN/DrVMarkerOutput 50 Hz 20 msO a o a o O o a a o o o a o a o a a o o a o a o o o oAutoresoln Reflevel 10dB/DtvA o a o o o a A o o o a o oA a TimeAccuracy C.**qyegp WithinS%oftherateserecitJiO a a o a o a CheckResolutionBandwidth and shape FactorO a o O o a o A o MinnoseQlglptv to 50Hz, andVERlCnl.drdpr-ry A o o O o a o a A o o o o o o o o o o O o o o oSPAN/DV MIN RFATTENdBLowLosscoAxcABLEwrrx sul courEEroid Nro sMAooaeten0 GHz 7.4 GHz 9,4 cO o a o o A o O o a a aA o o o o o a Narrow Videofilter PEAK/AVERAGE A o a a a o a o o a O o o oTmeidivauto O o a o o o A oPart Narrowvideofilter TME/DV Auto PEAK/AVERAGEO o a PerformanceCheckprocedure- 4g4Al4g4ApServlceVol.1Testsettings O a aTrME/DtV Display 21BIDIV VerticalNarrowvtdeofilter TIME/DIV AutoO o O o a 15.RF attenuato. test equipment setup for 50-60 dB stepCentebfreouency A a a o a oDisplay WidevideofilterO a a o o o o a o A o o o o o A o aDB/Dtv O a a O o a12s 103 TrrPerformanceCheck procedure- 4g4A/4g4ApServiceVol Resolutionbandwidth 100 kHzFreorange CheckLO Emission -70 dBmor tess O aAutoresoln Otsplay18.Test equipmentsetuplor checklngharmonicdistortion PerformanceCheckprocedure- 4g4Al4g4ApServiceVol.1EXT @o@o@g@@Resolutton PerformanceCheckprocedure- 4g4A/4g4ApServiceVol. lBandwtdth 1 MHz Verticaldisplay LIN Triggering INT TIME/OIVVertcal Dtsplay 2 dB/DtVTME/DV EXT Optioninstruments RrttlI3fil l t r l CheckHORIZOUTPUTSignatLevelSpanidiv DtsplayMAX Hold Tmeidiv Auto PEAK/AVERAGE VerttcalComb Generator Mooule Ull Q15oit rilineTR5O2 OutputLevel -dBm Var dB Dot Intensity OffGpibverificationprogram A o o o cReturn O o o o o o o a oReturn 5OOOREM49XPGPIBVERIFICATION Program 5O9OINPUTT$O a o a o r 8100PRINT 8070INPUT9040PRTNT10OMSGEOS 1OO1OPRINTSELECTEDDEVICE-CLEAR...SDCA o o 16000REM Talkonlymode 16010PAGE O c16050PRTNTTALK Jtestng only 16060INPUT Onlymode FailJGPIBvERlFlcArtoH Cotapr-erEo ANDRENREMorEJJLrsrEN!TALKTLF OCrnoiness Message19300cosuB19390 O o o o o o o O o o o o o o oGenerator 19530REMFAILUREDECISION Handler 19540PRINT!SELECT a UDKCan Damage StancdischargeSemiconductor Many Componentsused ThisinstrumentA a o Adluctment Procedure- 4g4A/4g4ApServtceVotPreparation 7luSelectorswttch O o o o o o o o o o o o o o o o o o o Adjustment Procedure- 494A/494ApServiceVolO 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 MNLTIME/DIVAUTO Triggeringfreerun AdJustmantProcedure- 494A/4g4ApServiceVot. .lTest equlpment setup for adiusting the D€flection Amplifier Adiustment Procedure- 4g4Al4g4Ap ServiceVolAdfustment Procedure- 4g4Ll4g4ApServtceVot O o o o o o o o o o o o o o o oTriggering EXT O o o o o o o o o o o o o AdJustmentProcedure- 494A1494ApService VotO 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 nrorsAdjustnent Procedure- 4g4A/4g4ApServtceVot O a 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 =?l Adjust Log AmptitierRPlo3s-.8 R1012 R102S,R1030@o.@@GPt AdrustmentProcedure 4g4Ll4g4ApServtce VotO o a o o o o o o o a o o o a o Adjustment Procedure- 494l4g4Ap ServiceVot A o o o a o o a o o o o o o o o o o o oFilrcsotocr O o o o O a o o o AdJustmentProcedure- 4g4l4g4Ap Service VotA a o A o O o o LNorE-lO o o o o o o o a O o a o o a o o a a o o o o o o o o o o o o o oRcsct SETTTNGS2Tion Bandwidth TionbandwtdthO o o o a a $o o3 $oO o a o a o a O o o o o a o o o a o a o o oO o o o O o o o o Ai kHrOotHi O a o a o a o o o O a a a a o o o o a o o o o o o o o o o oMIN RF Atten Triggering AutoO a o o O o o a o Adjustment procedure 4g4Al4g4ApseMce votOTi#i O o aFrequencyrange Rplo?2/h AdrustmentProcedure- 4g4A/494ApR1OS4 Frequency To 3.0-7.1 GHz, setOt o AdfustrnentProcedure- 4g4A/4g4ApServtceVolA o o o A o o o o o a AdJustnentProcedure- 494A/4g4ApServtceVot@@r Lt. a o o a o O a oSnrnasrzen @ RpzoroO o o o o A o o o o Optioninstruments Only AdjustOption0Z VR BandLevetinoAdrustmentProcedure- 4g4A/4g4ApServlceVot,I O a o a o o o o oRFouT OUr Introduction Sectfon6 494A/494ApServicc Vot.1Relativesusceptibilityto Staticdischargedamage Maintenance- 4g4Al4g4ApServlce Vot TroubleshootingAids Maintenance- 494A1494ApServiceVol367-028s,00 Page Troubleshooting Using Theerrormessagedisplay DiagnosticsTUNINGFAILURE- 2NDLO Powersupplyoutof Regulation O a o a o TUNINGFAILURE- 1STLOMalntenance- 494A/494ApServlceVol TPl034 GroundRefer€nceMixerfreo Desired1STLO Setnngaccuracy Auxiliary SynthesizerO o o o o o O o o o o o a Offset SET.540.672KHZ Ting Accu Racy 2NDLO ControldiagnosttcaLockdisabled Press Help Enable Pressshifttoexit PHASELOCKFAILURE- 1STLOEnabledpresshelpto Disable StrobefreqShift Pulsestretcher O o a o eO o a o a TracemodesMalntenance- 4S4Al4g4ApServtceVol Maintenance- 494Al4g4fupService Vof Corrective Maintenance1R1020 A46A1Rl015 446A1Rl010Selectedcomponents SERvIcING TooLs FoRBoARDTffi3.i*,o= MouNTEDcoMPoNENTs O o o o o a o o o o o o A aMafntenance- 494l4g4Ap ServtceVot.1 HorAlr HepairTerminalMaintenance- 494A/494ApServtceVot.1 Diode Color Code O o c a o oO o o O a a Replacingassembliesand Subassemblies O o E a o o o c o o A o o a o a o oA30A57-GPIB Interface O o O o o o O o c o o o o aMaintenance- 494Al4g4ApServiceVot.1 Sr3- ltILlrxER O o o o o o o o o o o o o o o a o o o o o Page EAUloNl Main PowerSupplyModule RemovalUpJ @o @@tr\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 o MaintenanceadjustmentsMalntenance- 494A/494ApServiceVol EouipmentrequiredforreturnlossadjustmentO o o o o o o o o o o o o O a o o Mafntenance- 494A1494ApServtceVot.1 A o o o o o o o o a o O o o o o o a o o oO o a a o o o o O o o o o o o o o o o o a o o O a a o a o o a a a o a o a o o o 829lr/lHzCoaxial Band-passFitterAdjustmentO o o o o o o o o o o O o o o o o o oMaintenance- 494l4g4Ap ServlceVot Malntenance- 494A/4g4ApServiceVol O o o o a o oO a o o O o o o o a o o o o o o o o o o 17.Corect re3ponsetor g29 MHr tlrlrd and fourth resonators O o o o a o oO o o o o o o o a o o O a o oO o o o o o o o o o o Calibrated100 MHz.with +20 kHz accuO o a o o A o o O o oLr.fry- gllpin . DoNorposinouexy op Ffiffi Maintenance- 494A/4g4ApServtce VotO a o a o a o o Maintenance- 4g4Al494ApService Vot.1Mafnfenance- 4g4Ll494ApServtceVot.1 A a o a o o oO a a o o a o o A a o a o o o o o R404OFine TuneRanee Maintenanco- 4g4A/4g4Ap ServlceVolO a o a O a a o o o a o a o oA o o FREOSPAN/DV MAX Malntenance- 494A1494ApServtceVol O o o a a o oStart Spur Amplttude Capableof measuring0 Ogmit 2 t\,tt-tzO o o o a a o FREQSPAN/DV MAXFREQSPAN/DIV MAX Autoresoln on FREQSPAN/DIV MAX Autoresoln Reflevel RangeMinrf Atten TimeidvHhFr $ f Malntenance- 494A/494ApServlce VolF t A o O o o o a o o a a o Malntenance- 494A/4g4ApServiceVotLl,l Jdl ttSettings Maintenance- 494A/4g4ApServtceVot.1A a O o o o aO a C o o o O o o o o O o o o o a oAddressBusTest Maintenance- 494A1494ApServiceVot..t 0xxx U302sSwtTcH Maintenance- 494A/494ApServtceVol Instrument Bus Test Troubleshootingon InstrumentbusO o o o o a o o Yr iffiIResponseto ADDRquery DATAinstrumentbus data command ADDRinstrumentbusaddresscommandMalntenance- 494Alttg4ApService Vol CombinedADDRcommandand DATAcommandDATAinstrumentbus dataquery InstrumentBusRegistersInstrumentbusregisters X x x 0 0 X x x 0 1 X x x 1 0DB7-DBO DB3-DBOO a o A e DBO DB5-DBO ExtmixerRfinput O o o a a DB2DB7-O DB3-DBO LSB VcoDB6 DB2 DBO DB2-DBOFront-PanelRegisters Maintenance 4g4ful4g4ApService Vol TapedatatransferprogramOFF E o O o o aA o o o A o o o a o o FinishedO o o o a o O t aO 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 Secton 494A1494Ap Service,Vot Pr signals. Blockdiagrams ShowingmoreRollow 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 Lst ConverterDiagram12 RF InterfaceCircuits Diagram28RF Input TheRFINPUT50 connectoracceptstheinputsig O o o o o o o o o oAndpassesdtttreiueniy oro O 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 oPage Theoryof Operafon 4g4A/494ApServlce,Vot O o o o o o O o o o o o oTabte7-1 2NDCONVERTERIF SelectionO o o O o o a o o o o o o o o 2472MHz2ND CONVERTERDiagram12O o o a o o o o o o o o o o o CAvrrYPosr+l+Ou-Too---l Theory of Operaton 4g4A/4g4ApService, Vol. .lPrecision ExternalCabtesO o o o O o a o o o o O a o O a o o 2182MHz PHASELOCKED2nd LO Diagrams13O a o O o O o o o Vco O a o a o o o o o o o o a o o a o oO a O o a o MHz 2nd Converter Diagrams15A o a o O o a a o o oO o o o o o o a o o o a o o o A o a o o o o o o SwitchandamplifierOtr 829MHz2nd ConvO o a a a o o o O o o a Page O o a a o o o o o O o a a o o a o o o110MHztF AMpLtFtERDiagram17 Theory of Operation 4g4Al4g4ApService,VolA o o a 3rd CONVERTERDiagram17 110MHzFTLTERS Diagram17A o o o O o o o O a o A o o o o o oO o o O o a o O a o REFERENCELOCKDiagramS0O o A o o o o o o a Bandwidthselection VariabfeResolution Diagrams19, 19,104Id,andA o o o o o O o o A a o o o o O o O o o GalnRequired BandLevetingCircuitDiagram20A o o O o Fn9 input signat.at a nominal14 dBm, is applied LOc AMp and Detector Diagram22316 O a o o a0316 316 684O o o Theory of Operation- 4gA/494Ap Servtce,Vol A a o oVIDEOAMpLtFtERDiagram23 FunctionaldescrtptionTheoryof Operation- 4g4ful4g4ApServtce,Vot 12. Selecdon ol display positlon on lhe log scale Theory of Operaton 494l4g4Ap Servlce,VolVtDEo PROCESSORDAGRAM24 Ffi rffi Theory of Operaton 4g4Al4g4ApService,VolO o C2016 C3026Filtercomponentcombinations DB2 DB3Sytemis desisncto opn IT,r-.,.P.,9? DlclTAL STORAGEDiagrams25O o Theory of Operadon- 4g4N4g4Ap Servtce,Vot.l LI lPage O o O a o o O o o o o Theoryof Operafon 494A/4g4ApServlce,Vol O o o o o o a o o oO o a a A o a a o o O o eDEFLECTIONAMpLtFtERSDiagram27 500 digitalstoragesweep positions. The resultingClisplayappearsas a bright dot sweepingacross Axisand RF Interface DTAGRAM28 O a o o O o oTransferswitchdriver Enables CurrentdriversO 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 towstateHTGH,VOLTAGESUPPLYDAGRAM29 O o A o O o o o O o a oCRT READOUTDAGRAM30 O o o o o O o o o o o oLf BLANKMSBof the characterdatais not set,the GEN RUNNTNGflip-flopunassertsR/o oFF throughoRTheory of Operatlon 4g4A/4g4Ap Service, Vol 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- 4g4Ll4g4ApService,Vot. lZo-cou I lF-€ OFFTME u1055-dX x o o o o o X x x x x xX o o o o o X . o o o o oTheory of Operation- 4g4l4g4Ap Servlce,Vol 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\i o Oe oAddress of Ascii code Skip bit Blank character 58O Theory of Opera$on- 494l4g4Ap Servtce,Vol O o o a o o o o a O o o o o o o o O o aSWEEPDiagram31 Theory of Operaton 494A/494ApService,VolA o o o a o o o o o O a o o o o o a o o A o o O a O a o o o o o o o o 20ssldiv 100D4 D3 D2 D1 do O a o o a o o o a o o o o o Theory of Operation- 494A/494ApService,Vol Tabte7-12Triggerselectionmodes TriggerMode Freerun Internal Ext€rnal Line TableZ-13O a a o a o A o a o o o 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 A o A o o A o o o o a o o SPANATTENUATORDiagram32Theory ol Operaton 4g4A/494ApService,Vot 20kCalibrationcontrolselectioncodes O o o o a a a o o A o o a a a 1st LO DRTVERDiagram33Xl K3065 x0.1 K3075 x0.01 K4072 X0.01O o a o o o o o O a a o a O o o o o o o o o o a DB4DB7 Preselectordriver Diagram34 A oO o a a o o o A o O o a o o o o o O o a o a o a oU5031OUTPUTLINES Span Volts Span VoltsTheory of Opera0on- 4g4\l4g4Ap Servlce,Vot TabteT-18Preselector Freouencybands Centerfreouencycontrol DIAGRAM35 O o A a a a o O o oA o a o o o o Figure Z-2S. DAC Varlance graph O o a O o oO o O a o o A o RuooeourTheory of Operaton 494l4g4Ap Servlce,Vot ADDRESS70 Formats O o o a oC o a o O o o o o o o o O o a o o o a oTheory of Operation- 4g4ful4g4ApService,Vot O o o O a aFunctionaldescription HARMONICMIXERDiagram36 AUXILIARYSYNTHESZERDiagram37 O a a A o oTheory of OperaUon- 494Al4g4ApServtce,Vot.1 O o o o o O a o o o o o a A o Theoryof Operation- 4g4A/494ApService,VolPage COUNTERBOARDDiagram38 Phaselocksynthesizer Diagrams39 O e o o o o o o o o o o o O o o aO o o o o e U2025OUTPUTLINES O e o o a o o o o o o o o o Page Theory of Operation- 494l4g4Ap Service,Vot DIGITALCONTROLDiagram930. System memory map Theory of Operation- 4g4Ll4g4ApServlce,Vol31. UOaddr€ssspace Theoryof Operation- 494A/494ApServlce,VolO o c o Theory of Operation- 4g4hl4g4ApService,VolPage A a O o O o o o o o o a o PollbitsBit O o a o o o o o A o A a oA a O o o o o Ff nsrrrcrr qrs crccrLunr O a o O a o o o o o o A a O a o o O o o o O o o a o A o o O a oO o o o o o o o a o o o o o o o o 100 O o o o o o o o o a o o101 102 CoLO o o o a o O o o o o o o Main power Supplyfurnishes all the regulated103 Theory of Operation- 4g4A/494ApServlce,VolO a o o o o o o o a o o o o o O o o o A o o o o oTheory of Operaton 494A/494ApServtce,Vot 105 Theory of Operation- 494l4g4Ap Servlce,VotOenanon*l 106 +5 V Voltage ReferenceSupply Theory of Operation 4g4Ll4g4ApService, VotDeterminingcomponents 107 O o o o o O a a o a o o a a a o o o a oPage Opl ONs RcV/134Swtss CalibratorOutput cALOUT O a o o o o o o o o o O o o O o o oA o o o o o o o O a o o a o o o o o o o a o o o o o o o O a o O o o o o o o o o o o oFreouency Goesanoffi O o o o a o o o A o A aSymmetry OoultnGffiA o o a o o A o o o o a a o o o a o o o o GeneraltermsVtdeoimarker O o o o o o Gfoesary- 494l4g4Ap Service,VolFrequencyterms AmplitudetermsDigitalstorageterms A o a o oO a a o o a O o o o o O o a o o oManual Part No G556O-00 Flrst prtnilng JAN1987 Revleed RevisioninformationO o a a o a o o o o o o a o o 12s O o o o a oSENSmVTY InstrumentO o Efr/sN O o a o o A o a oO o o A o a o o O o o o o o o O o O o o o Chg. Ref M63911 Product see llst Dale2-22-88Productsee llst DeflectionAmplifiertestpointsandadjustments Page5 olO a o o o o o o o o Performance Checkprocedure O o o o o O o aInstrument Manual A o o o O o O a a ADD Instbument PartnoO o o o o O o o o a Perfrmanceheck pRocEDURE change stepr r as foltows Product494N4g4Ap ServiceVolDate 5/u9o O a o o o O a o o o o ServiceVot.1Date 6/1190 Product494N494ApLO0 RHIVehticaldisplay Peaiaverage+ \ +i\MHz DB Bandwidth Resolution Verncal Freouency Bandwidth Display SpaivdivMHz 10dB 100kHz DB Bandwidth Limits 60dB MeasuredParti ResolutionbandwdithMinnoise Verticaldisplay Narrow Videofilter TIME/DIV Auto PeaivaveragePeavaverage A a aTercfgnix CHANcE INFoRMAnoN SpecificationPerformanceVerification Check1 dB CompressionpointProduct SeeLlst Date11 FREQUENCYSPAN/DIV 1 MHz RESOLUTIONBANDWTDTH1 MHzSpectrumAnalyzerUnder Test Ref. C1-991A o a o o O c