HP 8642A User manual

HP8642A/B
SYNTHESIZEDSIGNALGENERATOR
(IncludingOptions001,002and003)
SERIALNUMBERS
Thismanualappliesdirectlytoinstrumentswith
serialnumbersprefixed:
2427Ato2613AandallMAJOR changesthatapplytoyourinstrument
rev.30APR86
Foradditionalimportantinformationaboutserial
numbers,referto"INSTRUMENTSCOVEREDBY
THISMANUAL"inSectionI.
©HEWLETT-PACKARDCOMPANY1985
EAST24001MISSIONAVENUE,TAFC-34,SPOKANE,WASHINGTON, U.S.A. 99220
Operation/CalibrationManualPartNumber08642-90224
ServiceManual08642-90226
MicroficheOperatingandServiceManualPartNumber08642-90109Printed:August1986
m

COPYRIGHTANDDISCLAIMERNOTICE
Copyright- AgilentTechnologies,Inc.ReproducedwiththepermissionofAgilent
TechnologiesInc.AgilentTechnologies,Inc.makesnowarrantyofanykindwithregard
tothismaterialincluding,butnotlimitedto,theimpliedwarrantiesofmerchantability
andfitnessfora particularpurpose.AgilentTechnologies,Inc.isnotliableforerrors
containedhereinorforincidentalorconsequentialdamagesinconnectionwiththe
furnishing,performance,oruseofthismaterialordata.

CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment
from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the United
States National Bureau of Standards, to the extent allowed by the Bureau's calibration facility, and to the
calibration facilities of other International Standards Organization members.
WARRANTY
ThisHewlett-Packardinstrumentproductiswarrantedagainstdefectsinmaterialandworkmanshipfora period
ofoneyearfromdateofshipment.Duringthewarrantyperiod,Hewlett-PackardCompanywillatitsoption,
eitherrepairorreplaceproductswhichprovetobedefective.
Forwarrantyserviceorrepair,thisproductmustbereturnedtoa servicefacilitydesignatedbyHP.Buyershall
prepayshippingchargestoHPandHPshallpayshippingchargestoreturntheproducttoBuyer.However,Buyer
shallpayallshippingcharges,duties,andtaxesforproductsreturnedtoHPfromanothercountry.
HPwarrantsthatitssoftwareandfirmwaredesignatedbyHPforusewithaninstrumentwillexecuteits
programminginstructionswhenproperlyinstalledonthatinstrument.HPdoesnotwarrantthattheoperation
oftheinstrument,orsoftware,orfirmwarewillbeuninterruptedorerrorfree.
LIMITATIONOFWARRANTY
TheforegoingwarrantyshallnotapplytodefectsresultingfromimproperorinadequatemaintenancebyBuyer,
Buyer-suppliedsoftwareorinterfacing,unauthorizedmodificationormisuse,operationoutsideoftheenvironmental
specificationsfortheproduct,orimpropersitepreparationormaintenance.
NOOTHERWARRANTYISEXPRESSEDORIMPLIED.HPSPECIFICALLYDISCLAIMSTHEIMPLIED
WARRANTIESOFMERCHANTABILITYANDFITNESSFORA PARTICULARPURPOSE.
EXCLUSIVEREMEDIES
THEREMEDIESPROVIDEDHEREINAREBUYER'SSOLEANDEXCLUSIVEREMEDIES.HPSHALL
NOTBELIABLEFORANYDIRECT,INDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIAL
DAMAGES,WHETHERBASEDONCONTRACT,TORT,ORANYOTHERLEGALTHEORY.
ASSISTANCE
Product maintenance agreements and other customer assistance agreements are available for Hewlett-Packard
products.
For any assistance, contact your nearest Hewlett-Packard Sales and Service Office. Addresses are provided at
the back of this manual.

Model8642A/B SafetyConsiderations
SAFETYCONSIDERATIONS
GENERAL
Thisproductandrelateddocumentationmustbere-
viewedforfamiliarizationwithsafetymarkingsand
instructionsbeforeoperation.
Thisproductisa SafetyClassI instrument(provided
witha protectiveearthterminal).
BEFOREAPPLYINGPOWER
Verifythattheproductissettomatchtheavailable
linevoltageandthecorrectfuseisinstalled.
SAFETYEARTHGROUND
Anuninterruptiblesafetyearthgroundmustbepro-
videdfromthemainpowersourcetotheproductinput
wiringterminals,powercord,orsuppliedpowercord
set.
SAFETYSYMBOLS
A
Instructionmanualsymbol:theproductwill
bemarkedwiththissymbolwhenit
isnecessaryfortheusertorefertotheinstruction
manual(refertoTableofContents).
L. Indicateshazardousvoltages.
—Indicatesearth(ground)terminal.
WARNING
WARNING ] TheWARNINGsigndenotesa
hazard.Itcallsattentiontoa
procedure,practice,orthelike,which,ifnotcorrectly
performedoradheredto,couldresultinpersonalinju-
ry.Donotproceedbeyonda WARNINGsignuntilthe
indicatedconditionsarefullyunderstoodandmet.
CAUTION TheCAUTIONsigndenotesa haz-
ard.Itcallsattentiontoan
operatingprocedure,practice,orthelike,which,ifnot
correctlyperformedoradheredto,couldresultindam-
agetoordestructionofpartoralloftheproduct.Do
notproceedbeyonda CAUTIONsignuntiltheindi-
catedconditionsarefullyunderstoodandmet.
Any interruption of the protective (ground-
ing) conductor (inside or outside the instru-
ment) or disconnecting the protective earth
terminal will cause a potential shock hazard
that could result in personal injury. (Ground-
ing one conductor of a two conductor outlet
is not sufficient protection).
Whenever it is likely that the protection has
been impaired, the instrument must be made
inoperative and be secured against any unin-
tended operation.
If this instrument is to be energized via an
autotransformer (for voltage reduction) make
sure the common terminal is connected to the
earth terminal of the power source.
Servicing instructions are for use by service-
trained personnel only. To avoid dangerous
electric shock, do not perform any servicing
unless qualified to do so.
Adjustments described in the manual are per-
formed with power supplied to the instrument
while protective covers are removed. Energy
available at many points may, if contacted, re-
sult in personal injury.
Capacitors inside the instrument may still be
charged even if the instrument has been dis-
connected from its source of supply.
For continued protection against fire hazard,
replace the line fuse(s) only with 250V fuse(s)
of the same current rating and type (for exam-
ple, normal blow, time delay, etc.). Do not use
repaired fuses or short circuited
fuseholders.

Model8642A/B Contents
TABLEOFCONTENTS
SectionI
GENERALINFORMATION
IntroductiontotheOperatingandServiceManual.1-1
VolumeI,OperatingManual1-1
VolumesIIthroughIV,ServiceManual1-1
WheretoFindInstrumentSpecifications1-1
WheretoFindSafetyConsiderations1-2
Hewlett-PackardInterfaceBus(HP-IB)Enables
RemoteControloftheInstrument1-2
SelectingtheHP-IBAddress1-2
HP-IBCapabilities1-2
AnExplanationoftheOn-SiteServiceStrategy....1-3
HardwareFeatures1-3
Built-inTestFeatures1-3
FirmwareFeatures1-3
QuickReferenceManualInformation1-3
HowtheOperatingFundamentalsCanHelpYou
LearntoOperatetheInstrument1-3
AccessoriesSuppliedWiththe8642A/B1-4
OptionsAvailableWiththeInstrument1-4
ElectricalOptions1-4
MechanicalOptions1-4
DocumentationOptions1-5
EquipmentThatCanBeOrderedfortheSignal
Generator1-5
On-SiteServiceKits1-5
BenchServiceKit1-5
SignalGeneratorTestSystem,HP8952S1-5
50Ohmto75OhmAdapter1-5
FiberglassTransitCase1-5
Rack-SlideKit1-5
HowtoUsetheRecommendedTestEquipment
Table1-5
InstrumentsCoveredByThisManual1-6
SectionII
INSTALLATION
Introduction2-1
InitialInspection2-1
PreparationforUse2-1
PowerRequirements2-1
PowerCables2-3
HP-IBAddressSelection2-5
Interconnections2-5
MatingConnectors2-5
OperatingEnvironment2-5
RackMounting2-5
StorageandShipment2-6
Environment2-6
Packaging2-6
SectionIII
OPERATION
IntroductiontoSectionIII3-1
OperatingInformation3-3
HP-IBTableofContents3-5
HP-IBRemoteOperation3-7
HP-IBAddress3-8
HP-IBCapabilities3-9
DataInput3-11
DataOutput3-15
Clear3-24
Remote,Local3-25
LocalLockout,SetLocal3-26
ServiceRequest3-27
StatusByte3-29
AdditionalHP-IBInformation3-31
HP-IBCodesSummary3-32
HP-IBRelatedFront-PanelKeys3-34
HP-IBRelatedTerms3-35
RFFrequency
RFFrequencyContents3-37
RFFrequency3-39
RelativeRFFrequency3-45
RFFrequencySweep3-49
Amplitude
AmplitudeContents3-67
Amplitude3-69
RelativeAmplitude3-77
AmplitudeSweep3-83
Modulation
ModulationContents3-95
Modulation,AM3-97
Modulation,FM3-105
Modulation,*M3-119
Modulation,Pulse3-127
ModulationOscillator3-131
SettingModifications
SettingModificationsContents3-135
InstrumentPreset,PartialPreset3-137
Knob3-141
Step, IncrementSet3-149
EntryOff3-153
RecallRegisters
RecallRegistersContents3-155
Save/Recall3-157
Sequence3-161
SpecialFunctions
SpecialFunctionsContents3-165
SpecialFunctions3-167
Messages
MessagesContents3-177
OperatingMessages3-179
Appendixes
AppendixA:Glossary3-199
AppendixB:WritingMessagestotheDisplay. . 3-201
AppendixC:AmplitudeUnitsConversion 3-205
AppendixD:DisplayAnnunciatorsand
Abbreviations 3-207
AppendixE:IndividualInstrument
Identification 3-208.1

Contents Model8642A/B
CONTENTS
SECTION4
PERFORMANCETESTS
Introduction4-3
RecommendedTestEquipment4-3
TestRecord4-3
AbbreviatedPerformanceTesting4-4
LevelAccuracyandFlatnessTests4-6
HarmonicsTests4-12
PulseOn/OffRatioTest4-14
ResidualsTests4-16
AM,FM,and$MTests4-18
ExtendedFMDistortionTest4-25
InternalModulationOscillatorTests4-27
SWR4-30
SpuriousTest4-35
ThirdOrderIntermodulation4-37
SSBPhaseNoiseTest4-39
SSBPhaseNoiseTest(Optional)4-42
ExtendedPulseTests4-46
OptionalResidualFMTest4-49
InternalTimeBaseAgingRateTest4-51
SECTION5
ADJUSTMENTS
Adjustments5-2
Auto-AdjustRoutines5-2
Description5-2
HowAllAuto-AdjustProceduresBegin. 5-3
CorrectionDataSpecialFunctions5-5
IdentifyingtheContentsofA205-5
IdentifyingtheContentsofA35-7
InterpretingCalDataStats5-8
VI

HP8642A/B
SYNTHESIZEDSIGNALGENERATOR
OPERATIONANDCALIBRATIONMANUAL
(IncludingOptions001,002and003)
SERIALNUMBERS
Thismanualappliesdirectlytomoduleswithserial
numbersprefixed:
2427Ato2647AandallMAJOR changesthatapplytoyourinstrumentsoperations.
rev.l4JAN87
Foradditionalimportantinformationaboutserial
numbers,referto"INSTRUMENTSCOVEREDBY
THISMANUAL"inSectionI.
©HEWLETT-RACKARDCOMPANY1985
EAST24001MISSIONAVENUE*,TAFC-34,SPOKANE,WASHINGTON, U.S.A. 99220
Operation/CalibrationManualPartNo.08642-90224
OtherDocumentsAvailable:
MicroficheOperation/CalibrationManualPartNumber(Volume1)08642-90225
ServiceManualPartNumber(Volume2,3,4)08642-90226
MicroficheServiceManualPartNo.08642-90227 PrintedintheUSA:JANUARY1985
flfirl HEWLETT
miCM PACKARD

Model8642A/B GeneralInformation
SECTIONI
GENERALINFORMATION
1-1.INTRODUCTIONTOTHEOPERATINGANDSERVICEMANUAL
Thismanualcontainsinformationrequiredfora qualifiedpersontoinstall,operate,test,adjust,
andservicetheHewlett-PackardModel8642A/BSignalGenerator.TheHPModel8642A/B
willgenerallybereferredtoastheSignalGeneratorthroughoutthemanual.
TheOperatingandServiceManualiscomprisedoffourvolumesasdescribedbelow.
VolumeI,OperatingManual
OperatingFundamentals.Thisbookletprovidesoperatingexercisestoenableyoutoeasily
operatetheinstrument'sbasicfunctions.
SectionI,GeneralInformation.GeneralInformationcoversinstrumentspecifications,
options,equipmentavailable,recommendedtestequipment,andanexplanationofthe
On-SiteServiceStrategyfortheHP8642A/B.
SectionII,Installation.Installationcoversinitialinspection,preparationforuse,andstorage
andshipment.
SectionIII,Operation.OperationprovidesHP-IBoperatinginformation(includingHP-IB
addressselection)anddetailedoperatinginformationforeitherthebeginningor
experienceduser.A glossaryandindexareprovidedattheendofSectionIII.
VolumesIIThroughIV,ServiceManual
SectionIV,PerformanceTests.PerformanceTestsenableyoutochecktheperformanceof
theinstrumentagainstthespecificationslistedinTable1-1.
SectionV,Adjustments.Theadjustmentproceduresthatarenormallyfoundinthissection
arenowlocatedinSectionVIIIwiththeappropriatetroubleshootingproceduresand
schematics.
SectionVI,ReplaceableParts.ReplaceablePartslistsallreplaceablepartsandassemblies.
SectionVII,InstrumentChanges.Instrumentchangesprovidebackdatinginformation,and
retrofittingandmodificationinformation.
SectionVIII,Service.Serviceprovidestheinformationrequiredtoadjustandrepairthe
instrument.
1-2.WHERETOFINDINSTRUMENTSPECIFICA1'iONS
InstrumentspecificationsarelistedinTable1-1(r"»e1-7).Thesespecificationsarethe
performancestandardsorlimitsagainstwhichther.uuraentcanbetested.Supplemental
characteristicsarelistedinTable1-2(page 1-13). Supplementalcharacteristicsarenot
guaranteedspecificationsbutaretypicalcharacteristicsincludedasadditionalinformation.
1-1

GeneralInformation Model8642A/B
1-3.WHERETOFINDSAFETYCONSIDERATIONS
Thisproductisa SafetyClassI instrument;thatis,oneprovidedwitha protectiveearthterminal.
BeforeoperatingorservicingtheSignalGenerator,servicepersonnelshouldfamiliarize
themselveswiththesafetymarkingsontheSignalGeneratorandthesafetyinstructions.Safety
informationpertinenttothetaskathand(thatis,informationregardinginstalling,operating,
performancetesting,adjusting,orservicingtheHP8642A/B)isfoundthroughoutthismanual.
RefertotheSafetyConsiderationspagesfoundatthebeginningofVolumeI fora summaryof
thatinformation.
1-4.HEWLETT-PACKARDINTERFACEBUS(HP-IB)ENABLESREMOTECONTROLOF
THEINSTRUMENT^QQ^
TheHP8642A/BSignalGeneratorhasa Hewlett-PackardInterfaceBus(HP-IB)interfaceand
canbeusedwithanHP-IBcompatiblecontrollerfortestsystemapplications.TheSignal
GeneratorisfullyprogrammableviatheHPInterfaceBus.HP-IBisHewlett-Packard's
implementationofIEEEStandard48 8 andtheidenticalANSIStandard MC1.1. (Refertothe
HP-IBportionofSectionIIIformorecompletedetails.)
SelectingtheHP-IBAddress
TheSignalGenerator'sHP-IBaddressissetto19atthefactoryinbothinternalmemoryandan
internalswitchlocatedinsidetheinstrument.Thedecimalequivalentofthe 5-bit addresscode
canbedisplayedonandchangedfromthefrontpanel.RefertoHP-IBAddressintheHP-IB
portionofSectionIIIforinformationregardingchangingtheHP-IBaddress.
HP-IBCapabilities
ThisSignalGenerator'sHP-IBcapabilitiesaredefinedbythefollowinglistofinterface
functions.Formoreinformation,refertopage3-9.
SourceHandshake
AcceptorHandshake
Talker
ExtendedTalker
Listener
ExtendedListener
ServiceRequest
RemoteLocal
ParallelPoll
DeviceClear
DeviceTrigger
Controller
DriverElectronics
SHI
AH1
T6
TEO
L3
LEO
SRI
RL1
PPO
DC1
DTO
Cl
C2
C3
C28
E2
(Completecapability)
(Completecapability)
(Notalkonlymode)
(Nocapability)
(Completecapabilityincluding
(Nocapability)
(Completecapability)
(Completecapability)
(Nocapability)
(Completecapability)
(Nocapability)
(Systemcontroller)
(SendIFCandtakecharge)
(SendREN)
(Sendinterfacemessages)
(Three-statedrivers)
ListenOnly)
1-2

GeneralInformation Model8642A/B
1-5.ANEXPLANATIONOFTHEON-SITESERVICESTRATEGY
Theobjectivesoftheon-siteservicestrategyaretoprovidetheequipmentandinformation
necessarytoenableservice-trainedpersonneltotroubleshootandrepairtheHP8642A/Btothe
modulelevelatitsoperatingsite.UsingtheOn-SiteServiceKit(refer toparagraph1-12fora
description),a servicepersonshouldbeabletosuccessfullyrepair80%ormoreofSignalGenera-
torfailureswithintwohoursafterarrivingattheoperatingsite.Repairtimesmaybelongerfor
individualswithnopriortrainingorexperienceontheHP8642A/B.
ThefollowingservicefeatureshavebeendesignedintotheHP8642A/B:
HardwareFeatures
•Eachmajorcircuitfunctionisphysicallylocatedina separatemodule.
•RFmodulesarearrangedphysicallyfromlefttorightintheorderoftheirfunctional
sequence.
•Mostintermoduleconnectionsareaccessiblefromthetopoftheinstrument.
•TherearenoRFfeedbackpathsbetweenmodules(afeed-forwarddesign).
•Printedontheinsidetopcoveroftheinstrumentisanillustratedtopviewoftheinsideof
theinstrumentaswellasa tableofcableconnections.
Built-inTestFeatures
•A voltmeteranda powermeterarebuiltintotheinstrument.
•UniqueservicetoolsarestoredinsidetheHP8642A/Bcabinet.
FirmwareFeatures
•AllRFmodulesareconnectedtoa diagnosticbuswhichallowsthecontrollertomonitor
criticaloperatingtestpointswithinthemodule.
•CriticalmessageinformationconcerningtheoperatingconditionoftheHP8642A/Bis
displayedinnumericcodeonthefrontpanel(orcanbeprintedviaanHP-IBprinterwith-
outtheneedofanexternalcontroller).
•Fourinstrumentdiagnosticlevelshelptoanalyzetheinstrument'scondition:Power-Up
Self-Check,FaultDetectionSelf-Check,InstrumentLevelDiagnostics,andModuleLevel
Diagnostics.
1-7.HOWTHEOPERATINGFUNDAMENTALSCANHELPYOULEARNTOOPERATE
THEINSTRUMENT
TheOperatingFundamentalsareabbreviated,front-paneloperatinginstructions(includedwith
VolumeI asa separatebooklet)whichwillenableyoutooperatethebasicfunctionsoftheSignal
GeneratorwithoutusingthemoredetailedandextensiveportionsoftheOperatingManual.
However,theDetailedOperatingInstructionsinSectionIIIcanprovidemorespecificinforma-
tion,whichcanbeeasilyaccessedwithanIndex.
rev.06OCT86 1-3

GeneralInformation Model8642A/B
1-8.ACCESSORIESSUPPLIEDWITHTHE8642A/B
ThelinepowercableistheonlyaccessorysuppliedwiththeSignalGenerator.Thelinepower
cableisselectedatthefactoryaccordingtothelinepowerrequirementsspecifiedbythecus-
tomer.Ifthelinepowercordtypeisnotspecified,itwillbeselectedaccordingtothevoltage
availableinthecountryofdestination.Forthepartnumbersofthepowercables,refertoTable
2-1onpage2-4,PowerCableandMainsPlugPartNumbers.SignalGeneratorsshippedto
countriesusing115voltsarealsosuppliedwitha setoffusesfor230voltoperation.
1-9.OPTIONSAVAILABLEWITHTHEINSTRUMENT
ElectricalOptions
ElectricaloptionnumberscanbedisplayedonthefrontpanelorreadviaHP-IB.Refertopage
3-208.1formoreinformation.
Option001(HighStabilityTimeBase).Thisoptionaltimebaseimprovesthefrequencyaccuracy
andstabilityoftheinternalreferenceoscillator.(RefertoTable 1 -1forspecifications.)
Option002(Rear-PanelOutputforAllConnectors).Thisoptionplacesallfront-panelconnec-
tionsontherearpaneloftheinstrument.
8642AOption003(IncreasedOutputPowerOption).ThisoptionenablestheHP8642ASyn-
thesizedSignalGeneratortodeliverthesameoutputpowerasthe8642B(excludingband10).
MechanicalOptions
Option907(Front-HandleKit).FronthandlesareprovidedwhenOption907isordered.Order
aFront-HandleKitasHPpartnumber5061-0089.
Option908(Rack-FlangeKit).RackflangesareprovidedfortheSignalGeneratorwhenOption
908isordered.(WhenrackmountingtheSignalGenerator,ensuretheinstrumentissupported
properlybyusingthesystemcabinet'ssupportrails.DuetotheweightoftheHP8642A/B,not
usingthesupportrailscouldcausedamagetotheinstrumentand/orthesystemcabinet.)Order
aRack-FlangeKitasHPpartnumber5061-0077.
Option909(Rack-FlangeandFront-HandleCombinationKit).Thisisnota Front-HandleKit
anda Rack-FlangeKitpackagedtogether;itisa uniquepartthatcombinesbothfunctions.
CombinationkitsareprovidedfortheSignalGeneratorwhenOption909isordered.(When
rackmountingtheSignalGenerator,ensuretheinstrumentissupportedproperlybyusingthe
systemcabinet'ssupportrails.DuetotheweightoftheHP8642A/B,notusingthesupportrails
couldcausedamagetotheinstrumentand/orthesystemcabinet.)Ordera Rack-Flangeand
Front-HandleCombinationKitasHPpartnumber5061-0083.
Rack-SlideKitinformationislistedonthefollowingpageunderparagraph1-10,Equipment
ThatCanBeOrderedfortheSignalGenerator.Ifycuareplanningtotakeadvantageofthe
On-SiteServiceStrategyfortheHP8642A/B,wesuggestyouusetheRack-SlideKitwhenrack
mountingtheinstrument.
1-4 rev.20MAR85

Model8642A/B GeneralInformation
DocumentationOptions
Option910(ExtraManual).ThisoptionprovidesanadditionalOperatingandServiceManual
(VolumesI throughIV).OrdertheadditionalmanualasHPpartnumber08642-90012.
Option914(DeleteServiceManual).ThisoptionprovidesonlyanOperatingManual(VolumeI)
withtheSignalGenerator.OrderanOperatingManua1asHPPartNumber08642-90013.
Option710(On-SiteServiceManual).TheOn-SiteServiceManualisa servicetooldirectedat
speedytroubleshootingandrepairoftheHP8642A/Btothemodulelevel.Themanualprovides
asystematicapproachtotroubleshootingwhichdirectsthetechnicianthroughinstrument
checks,module-groupchecks,andthenspecificmodulechecks.TheOn-SiteServiceManualis
designedforusewiththeOn-SiteServiceKits.(Refertoparagraph1-10below.)OrdertheOn-
SiteServiceManualasHPpartnumber08642-90020.(Itisnotnecessarytoorderoption710if
anOn-SiteServiceKitisordered.)
1-10.EQUIPMENTTHATCANBEORDEREDFORTHESIGNALGENERATOR
On-SiteServiceKits
EachofthesekitscontainsanOn-SiteServiceManualinadditiontoallHP8642A/Bmodules
andinterconnectingcablesrequiredforon-site,module-levelrepair.Eachkitalsoincludesa set
oftools(notnormallyfoundina standardtoolbox)necessarytoservicetheHP8642A/B.Order
theHP11801AtoservicetheHP8642A.OrdertheHP1180IBtoservicetheHP8642B.Or-
dertheHP11801Ctoservicebothinstruments.RefertoTable1-5,onpage1-17,fora com-
pletepartslistingoftheOn-SiteServiceKit.(Althoughtwopartnumbersarelistedformodules
intheOn-SiteServiceKit,onlythenewortherestoredmodulewillbeincludedinthekit.)
BenchServiceKit
Thiskit,inconjunctionwiththeHP8642A/BServiceManual,isdirectedatcomponent-level
repairandmodulecalibrationoftheHP8642A/B.Thekitcontainsspecialtoolsand
troubleshootingaidssuchasa TorxtorquewrenchandTorxbits,testadapters,andspecialcables
andcableadapters,etc.OrdertheBenchServiceKitasHPpartnumber11802A.Referto
Figure1-2onpage1-19fora completepartslistingoftheBenchServiceKit.
SignalGeneratorTestSystem,HP8952S
ThistestsystemprovidesthenecessaryequipmentforautomatedperformancetestingoftheHP
8642A/B. Oneofthefollowingsoftwareoptionsisrequiredtooperatethetestset.Software
Pac: HP11795Opt.205(fortheHP8642A)orHP11795Opt.206(fortheHP8642B).
50Ohmto75OhmAdapter
Thisadapterisanimpedance-matchingnetworkrequiredfortestingwith75ohmcablingand/
orloads.OrdertheadapterwithHPpartnumber11687A.
FiberglasTransitCase
OrderthisprotectivecaseforshippingandtransportingtheHP8642A/BSignalGeneratorasHP
partnumber9211-2661.
Rack-SlideKit
Thisheavy-duty,rack-slidekitisthekitrecommendedfortheHP8642A/BSignalGenerator.
OrdertheRack-SlideKitforinstrumentcabinetframesassembledwithmetrichardwareasHP
partnumber08642-80059.OrdertheRack-SlideKitforinstrumentcabinetframesassembled
withEnglishhardwareasHPpartnumber08642-80058.(Notethatifmetrichardwareisused,
therearpaneloftheinstrumentmentionsthatfact.)
1-5

GeneralInformation Model8642A/B
1-11.HOWTOUSETHERECOMMENDEDTESTEQUIPMENTTABLE
Table1-3(page1-15)liststhetestequipmentrequiredfortesting,adjusting,andservicingthe
SignalGenerator.Thecriticalspecificationcolumndescribestheessentialrequirementsforeach
pieceoftestequipment.Otherequipmentcanbesubstitutedifitmeetsorexceedsthesecritical
specifications.
AlternatemodelsaresuggestedinTable1-4onpage1-16.Somereasonsforrecommendingan
alternatemodelmightbeitsHP-IBcompatibilityoritsabilitytoreplacetwoormoresingle
models.
1-12.INSTRUMENTSCOVEREDBYTHISMANUAL
SerialNumbers.Attachedtotheinstrumentisa serial-numberplate.Theserialnumberisin
theform:0OO0A000OO.Thefirstfourdigitsandtheletteraretheserialprefix.Thelastfive
digitsformthesuffixthatisuniquetoeachinstrument.Thecontentsofthismanualapply
directlytoinstrumentshavingthesameserialprefix(es)asthoselistedatthebeginningof
VolumeI.
ManualUpdates.Aninstrumentmanufacturedaftertheprintingofthismanualmayhavea
serialprefixthatisnotlistedatthebeginningofVolumeI.Anunlistedserialprefixnumber
indicatesthattheinstrumentdiffersinsomewayfromthosedocumentedinthismanual.
A"MANUALUPDATES"packetisshippedwiththemanualwhennecessarytoprovideyouwith
themostcurrentinformationavailableatthetimeofshipment.Thesepacketsconsistof
replacementandadditionpageswhichshouldbeincorporatedintothemanualtobringitupto
date.
Hewlett-Packardoffersa DocumentationUpdateServicethatwillprovideyouwithfurther
updatesastheybecomeavailable.
Ifyouoperateorserviceinstrumentsofdifferentserialprefixes,westronglyrecommendthat
youjointhisserviceimmediatelytoensurethatyourmanualiskeptcurrent.Formore
informationrefertotheDocumentationUpdateServicereplycardincludedwiththismanualor
contact:
Hewlett-PackardCompany
SpokaneDivision
TechnicalWritingDepartment
24001E.Mission--TAFC-34
Spokane,WA99220
[phone]
1-6

Model8642A/B GeneralInformation
Table1-1.Specifications(1of6)
ElectricalCharacteristics
FREQUENCY
Range
8642A
8642B
CarrierFrequency
Band1
10(8642Bonly)
9
8
7
6
5
4
3
2
1
HET
Resolution
Stability
INTERNALREFERENCE
OSCILLATOR
Standard
Option001AgingRate
SPECTRALPURITY
SSBPhaseNoise
Band
10
9
8
7
6
5
4
3
2
1
HET
PerformanceLimits
100kHzto1057.5MHz
100kHzto2115MHz
1057.500001-2115.000000MHz
528.750001-1057.500000MHz*
264.375001- 528.750000MHz
132.187501- 264.375000MHz
66.093751- 132.187500MHz
33.046876-66.093750MHz
16.523438-33.046875MHz
8.261719-16.523437MHz
4.130860-8.261718MHz
0.100000-4.130859MHz
0.100000-132.187500MHz
1Hz(0.1HzwithSpecialFunction
240or241)
Sameasreferenceoscillator
SeeSupplementalCharacteristics
<109/day
SSBPhaseSSBPhase
Noise, 20kHzNoiseFloor,
offsetfrom200kHzoffset
carrierfromcarrier
-125dBc/Hz-134dBc/Hz
-134dBc/Hz-143dBc/Hz
-137dBc/Hz-144dBc/Hz
-141dBc/Hz-144dBc/Hz
-144dBc/Hz-145dBc/Hz
-145dBc/Hz-145dBc/Hz
-146dBc/Hz-147dBc/Hz
-147dBc/Hz-148dBc/Hz
-148dBc/Hz-149dBc/Hz
-137dBc/Hz-138dBc/Hz
-125dBc/Hz-137dBc/Hz
Conditions
After8-daywarm-up
CW,AM,orAngleModulation
<1/60MaximumPeakDeviation
1Bothgeneratorscovertheirrangesinonecontinuousspan.However,manyotherspecificationsaredependentoncarrierfrequency.Tosimplify
suchspecifications,the8642Aand8642Bcarrierfrequencyrangesaredividedintobands.
2Band9,8642Bcarrierfrequencyrangeis528.7500005MHzto1057.500000MHz.
1-7

GeneralInformation Model8642A/B
Table1-1.Specifications(2of6)
ElectricalCharacteristics
SPECTRALPURITY(Cont'd)
ResidualFM
Band
10(8642Bonly)
9
8
1-7
HET
ResidualAM
SpuriousOutputSignals
Harmonics
Sub-harmonics
Non-harmonics
OUTPUT
Level Range
MaximumLevel Available
Resolution
AbsoluteLevelAccuracy4
Flatness
Impedance
SWR
ReversePowerProtection
ThirdOrderIntermodulation
AvailableCalibrationUnits
3NotspecifiedinHETband.
4Absoluteoutputaccuracyconsistsofallowances
PerformanceLimits
PostDetectionBandwidth
0.3to3.0kHz0.05to15.00kHz
<5Hzrms<9Hzrms
<2Hzrms<5Hzrms
<1.2Hzrms<2Hzrms
<1Hzrms<1.2Hzrms
<3.5Hzrms<5Hzrms
<0.01% AMrms
8642A/B,8642B,
Bands1-9,HETBand10
-30dBc-25dBc
-20dBc-20dBc
none-45dBc
-100dBc3-94dBc
FromMaximumLevel Availableto
-140dBm(0.023teVinto50ohms)
+20dBm(2.24V)
+ 19 dBm(2.00V)
+ 18 dBm(1.78V)
+17dBm(1.59V)
+ 16 dBm(1.41V)
0.1dB
±1dB
<±0.75dB
50ohmsnominal
<1.5:1
<2.0:1
50W,25Vdc,8642A
25W,50Vdc,8642B
<-50dBcat+10dBm.Typically
decreases10dBforevery5 dB
ofcombinedleveldecrease
dBm, V,mV,vM, dB^V,EMFV,
EMFmV,EMF^V,dBEMFMV.
RELZEROorREFSETcanbe
usedtoobtainsettingssuchas
dBVordBf.
fordetectorlinearity,temperature,flatness,andatt
Conditions
CW,AM,orAngleModulation
<1/3MaximumPeakDeviation
0.3to3.0kHz
PostDetectionBandwidth
Outputlevel<+10dBm
Outputlevel<+16dBm
>10kHzfromthecarrier
8642A(except8642Band
Opt.003)8642AOpt.003
bands 1 thru7 bands1 thru7
DNAband8
band8,HETHET
n/aband9
band9 band10(8642B)
Outputlevels>-127dBm
Outputlevel,+10dBm
Outputlevels<0dBm
Outputlevels>0dBm
Twosignalgeneratorswithfrequen-
ciesspaced25kHzapartintoa
resistivecombiner
enuatoraccuracy.
1-8

Model8642A/B GeneralInformation
Table1-1.Specifications(partof3 of6)
ElectricalCharacteristics
FREQUENCYMODULATION
MaximumFMDeviation
Band
10(8642Bonly)
9
8
7
6
5
4
3
2
1
HET
10(8642Bonly)
9
8
7
6
5
4
3
2
1
HET
Resolution
IndicatorAccuracy
(Rates20Hzto100kHz)
FMDistortion
(Rates20Hzto100kHz)
FM3 dBBandwidth
'Maximumdeviationmaybeincreaseduptotha
thanthevaluesshownhere.HETbandcanals
PerformanceLimits
3MHz
1.5MHz
750kHz
375kHz
187.5kHz6
93.75kHz8
46.875kHz8
23.437kHz8
11.718kHz8
93.75kHz8
1.5MHz
(thesmallerof:)
3MHzorf,,^X 2160
1.5MHzorf,^X 1080
750kHzorf^^X 540
375kHzorf,,^X 270
187.5kHzorf,,^X 1358
93.75kHzor fmod X 67.58
46.875kHzorf^X 33.758
23.437kHzorf^,X 16.8756
11.718kHzorf^X 8.43756
93.75kHzorf^X 67.58
1.5MHzor^ X 1080
0.7%ofsettingor0.0004%of
maximumdeviation,whicheveris
larger
±(5% ofsetting+10Hz)
4%
2%
0.4%
dcto200kHz
20Hzto200kHz
20Hzto100kHz
shownfortheHETband(0.1MHzto132.1875M
obeselectedwithSpecialFunction8.
Conditions
Externaldccoupled
Externalaccoupledorinternal
Formaximumdc-coupleddeviation
For1/2maxdc-coupleddeviation
For1/15maxdc-coupleddeviation
Externaldcsource
Externalacsource
Internalsource
Hzcarrierfrequency)byselectingdeviationlarger
rev.07JUNE85 1-9

GeneralInformation Model8642A/B
Table 1-1. Specifications (4 of 6)
ElectricalCharacteristics
FREQUENCYMODULATION(Cont'd)
IncidentalAM
CarrierFrequencyOffset
WhenEnteringFMor
PMModes
PHASEMODULATION
MaximumPhaseDeviation
Band
10(8642Bonly)
9
8
7
6
5
4
3
2
1
HET
Resolution
IndicatorAccuracy
*MDistortion
*M3 dBBandwidth
PULSEMODULATION8
PulseOn/OffRatio
Rise/FallTime
MaximumRepetitionFrequency
MinimumPulseWidth
NominalInputThresholdLevel
INTERNALMODULATION
OSCILLATOR
FrequencyRange
FrequencyResolution
FrequencyAccuracy
OutputLevelRange
OutputLevelResolution
OutputDistortion(>0.5Vpk)
OutputLevelAccuracy
OutputImpedance
PerformanceLimits
0.3%
none
<500Hz
<1kHz
200radians
100radians
50radians
25radians
12.5radians7
6.25radians7
3.125radians7
1.5625 radians7
0.78125radians7
6.25radians7
100radians
0.7%ofsettingor0.0004%of
maximumdeviation,whicheveris
larger
±(5% ofsetting+0.09radians)
<0.4%
20Hzto15kHz
dcto15kHz
2509Ato2550A
>30dB
>45dB
<3.5MS
50kHz
6 MS
1.5V
2551Aandabove
>40dB
>80dB
<400ns
100kHz
2 MS
1.5V
20Hzto100kHz
1% ofsetting
2% ofsetting
0to3.3Vpk
4mV
<0.02%
<0.15%
±(4% +15mV)
600ohms±10%
Conditions
20kHzpeakdeviation,1 kHzrate,
>400kHzcarrierfrequency,output
level<+15dBm
acandinternal
dc,8642A/BBands1-9,HET
dc,8642BBand10
1kHzrate
1kHzrate
Internalandexternalac
Externaldc
Outputlevels<+15dBm
8642A/BBands1-9,HET
8642B, Band10 ..«..-
10% to90%
Externaldc
Into600ohms
0.02kHzto15.8kHz
>15.8kHz
Within1s
7MaximumdeviationmaybeincreaseduptothatshownfortheHETband(0.1MHzto132.1875MHzcarrierfrequency)byselectingdeviationlarger
thanthevaluesshownhere.HETbandcanalsobeselectedwithSpecialFunction8.
Outputlevelaccuracyistypically±3dB.
1-10 rev.!6MAY86

Model8642A/B GeneralInformation
Table1-1.Specifications(5of6)
ElectricalCharacteristics
GENERAL
OperatingTemperatureRange
StorageTemperatureRange
PowerRequirements
LineVoltage
LineFrequency
PowerDissipation
ElectromagneticInterference
(Leakage)
NetWeight
ShippingWeight
Dimensions
Height
Width
Depth
HPSYSTEM II
ModuleSize
ElectricalCharacteristics
FREQUENCYSWEEP
DigitallySteppedSweep
Start and StopSweep
Time
PhaseContinuousSweep
Start-StopSweep
MaximumSweepSpan
Band
10(8642Bonly)
9
8
7
6
5
4
3
2
1
HET
PerformanceLimits
0° to 55°C
-55° to +75°C
100V, 120V, 220V, or 240V
47.5 to440Hz
300 VAmax
MIL STD461BandFTZ1115
32.7 kg(71.5lb)
43 kg(95lb)
133 mm(5.25in.) nominal
425 mm (16.75 in.) nominal
617 mm(23.8in.) nominal
51AH X 1Wx 23D
Conditions
+5%, -10%
Conducted and radiatedinterference
iswithin the requirements ofMIL
STD 461B methodsCE03 and
RE02. Interference is alsowithin
thestandards setbyFTZ1115.
Also RF leakage of<0.5^Visin-
duced ina two-turnloop 2.5cmin
diameter,held 2.5cm awayfrom
anysurface, for outputlevels
<0dBm.
Features
Sweepsbetween two selectedend-points ina linear,step-wisemanner.
End-points canbe anywherewithin the frequencyrange ofthe instrument.
InAUTOsweepmode,sweepmuststaywithin the range of bands 2
through 9,or band 1,or band 10,ortheHET band.
Maximumsweeptime:999s.Minimumsweeptime: 275ms.A maximum
number of distinctfrequencypoints is automaticallyselectedbased onthe
end-points and sweeptime.
Instrumentsweepsbetween two selectedend-points ina linear,phase
continuousmanner.
End-points canbe outside the band, but
(StartFrequency + StopFrequency) H-2 must be within the band.
800 kHz
400 kHz
200 kHz
100 kHz
50kHz9
25kHz9
12.5kHz9
6.25kHz9
3.125kHz9
25kHz9
400 kHz
9Maximumsweepspan
maybe increased upto thatshown fortheHET band (0.1MHzto 132.1875 MHz carrierfrequency) by selecting a frequency
spanlargerthan the spanshownhere. HET band can also be selectedwithSpecialFunction 8.
l-ll

GeneralInformation Model8642A/B
Table1-1.Specifications(6of6)
ElectricalCharacteristics
FREQUENCYSWEEP(Cont'd)
PhaseContinuousSweep(Cont'd)
SweepTime
X-AxisOutput
Z-AxisOutput
REMOTEOPERATIONS
HP-IB(IEEE488-1978)Capability
Interface
FunctionsControlled
HP-IBAddressSelectCode
InterfaceFunction
IEEE-488Functions
Implemented
Features
Maximumsweeptime:999s.Minimumsweeptime:5 ms.Maximumand
minimumsweeptimearealsodependentonend-pointseparationand fre-
quencybandselected.
0to10Vdc,±10%
TTLpositivetrueforcrtdisplayblankingduringretrace.
Hewlett-PackardInterfaceBus(HP-IB).HP-IBisHewlett-Packard'simple-
mentationofIEEEStandard488-1978.
Allfunctionscontrolledfromthefrontpanel,withtheexceptionofthe
powerswitchandtheknob,areprogrammablewiththesameaccuracy
andresolutionasinmanualmode.
SettableviathefrontpaneloroverHP-IBfrom00to30(5-bitdecimal
equivalent).(Alisten-onlymodeisalsoavailableas31.)
Listener,talker,andcontroller
SH1, AH1,T6,TE0,L3,LEO,SR1,RL1,PP0,DC1,DT0,C1,C2,C3,
C28, E2
1-12

Model8642A/B GeneralInformation
Table1-2.SupplementalCharacteristics(1of2)
Supplementalcharacteristicsaretypical,butnon-warrantedperformanceparameters,intendedtobeusefulininstru-
mentapplications.
FREQUENCY
Underrange:10to100kHz.
HeterodyneMode(HET,SpecialFunction8):The8642A/B
canderiveitsoutputthrougha heterodynemodeinthe
carrierfrequencyrangefrom0.1MHzto132.1875MHz.
Thisimprovesmodulationandsomefrequencysweep
characteristicsatlowercarrierfrequencies.
FrequencySwitchingTimetoWithin100HzofFinal
Frequency:
ProcessorDelay
20ms
FrequencySettling
65ms
TotalTime
85ms
SPECTRALPURITY
SSBPhaseNoiseat1 GHzCarrierFrequency(dBcin1 Hz
bandwidth):
10
Hz
-40
100
Hz
-75
1
kHz
-98
10
kHz
-131
20
kHz
-138
100
kHz
-146
200
kHz
-147
1
MHz
-147
10
MHz
-154
MeasuredSSBPhaseNoiseat1 GHz:
0
_-20
N
5-60
m
in
680
z
3-100
CO
£-120
m
8-140
-160 101(
'
■
-
I "*
|
)01k10k100k1M1C
OffsetFrequency,Hz M
SSBAMNoiseFloorat200kHzOffset,+16dBm:
<—157 dBc/Hz,band2 through9.
<-150dBc/Hz,band10.
MODULATION
ExternalInputImpedance:600ohms,±10%.
ExternalInputLevelRequired:1 Vpeakforspecifiedaccu-
racy.Front-panelannunciatorsindicateapplicationof
1Vpeaksignal±5%,20Hzto100kHz.Whengreater
accuracyisrequired,modulationdrivevoltageshould
bemonitoredexternally.
ModulationSourceCapability:Allmodulationtypescanbe
drivenwitheitheraninternalorexternalmodulation
source.AM,FM,and*Mcanalsobedrivensimultane-
ouslybybothinternalandexternalmodulationsources.
MixedModulationTypes:Anytwomodulationtypescan
besimultaneouslyselectedexceptforFM+ *Mand
AM+ pulsemodulation.
FREQUENCYMODULATION
CarrierStabilityinFMMode:
ACFM:SameasCW.
DCFM:<4kHz/hour,8642A/Bbands1-9,HET.
<8kHz/hour,8642Bband10.
FMStereoSeparation,Extde-Coupled,HETBand(Special
Function8):>50dB,1 kHzrate,75kHzdeviation.
LowDistortionFM/$M(SpecialFunction5 or112):Distortion
ineitherFMor#Mcanbereducedwiththisfunction.
FMstereoseparationunaffected.
FMDistortioninSpecialFunction7:<0.03%THD,<1/15
maximumdeviation,externalrates<50kHzandinter-
nalrates<15.8kHz.
FMPre-emphasis(SpecialFunction6):Providespre-
emphasisinFMwitha 750^stimeconstant.Thisis
usefulwhentestingFMcommunicationsreceivers.
AMPLITUDEMODULATION
(forV0R,ILS,AvionicsApplications)
AMPhaseShift,DCCoupled,forCarrierFrequenciesFrom
108MHzto118MHz:
30Hzrate:<±0.01°.
30Hzto10kHzrate:<±3°.
Differencefrom9 kHzto11kHzrates:<2°.
AMFlatness,DCCoupledExternalAM:
<0.04dB,90to150Hz, 108to118MHzand329
to335MHz.(<0.00092DDM@ 20%AMand
<0.0019DDM@ 40%AM.)
<0.1dB,9 to11kHz,108to118MHz.
OUTPUT
AbsoluteAccuracy:±3dB,outputlevel<-127dBm.
OutputLevelSwitchingTime:<100msfromreceiptoflast
controllercommand.
AmplitudeSweep,inCWandAngleModulationModes:
Range:20dBlog(orlinearwithSpecialFunction122)
sweep(10dBunderrangeavailable).
SweepTime:20msminimum,999smaximum.
Accuracy: ± 1 dBoverhighest10dB.±3dBoversec-
ondhighest10dB.
AttenuatorRangeHold(SpecialFunction9):Theinternal
stepattenuatorcanbefixedandtheelectroniclevel
verniervariedupto30dBformonotoniclevelsetting.
Thisisusefulinmeasuringofreceiversquelch
hysteresis.
1-13