HP-8746B-Manual-SNP_1114A 电路图.pdf

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1、 HP Archive This vintage Hewlett Packard document was preserved and distributed by www. Please visit us on the web. For free distribution only! Thanks to on-line curator: Bernhard Voss for supplying and scanning this vintage document. RadioFans.CN 收音机爱 好者资料库 OPERATINGANDSERVICEMANUAL S-PARAMETER TES

2、TSET .5-12.4GHz 87468 rhHEWLETT a:PACKARD RadioFans.CN 收音机爱 好者资料库 CERTIFICATION Hewlett-Packard, Company certifies that this productmetits published specificationsatthetimeof shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are traceable to the .United S

3、tates National BureauofStandards, to theextentallowedbythe Bureaus calibration facility,andto the calibration facilitiesofotherInternational Standards Organization members. WARRANTY This Hewlett-Packard instrument productiswarranted against defects in material and workmanship for a periodofone year

4、from dateofshipment. During the warranty period, Hewlett-Packard Com- pany will,atits option, either repairorreplace products which provetobe defective. Forwarranty serviceorrepair, this product must be returnedtoa service facility designated byHP. Buyer shall prepay shipping chargestoHPandHPshall p

5、ay shipping chargestoreturn the productto Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products returnedtoHP from another country. HPwarrantsthatits software and firmware designated byHPfor use with an instrument will execute its programming instructions when properly

6、installedonthatinstrument.HPdoesnotwarrantthatthe operationofthe instrument,orsoftware,orfirmware will be uninterrupted.or error free. LIMITATIONOFWARRANTY The foregoing warranty shallnotapplytodefects resulting from improperorinadequate maintenance by Buyer, Buyer-supplied softwareorinterfacing, un

7、authorized modificationormisuse, operation outsideofthe environmental specifications for the product,orimproper site preparationormain- tenance. NOOTHERWARRANTY IS EXPRESSEDORIMPLIED. HP SPECIFICALLY DISCLAIMSTHEIM- PLIED WARRANTIESOFMERCHANTABILITY AND FITNESS FOR. A PARTICULAR PURPOSE. .EXCLUSIVE

8、REMEDIES THEREMEDIES PROVIDED HEREIN ARE BUYERS SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLEFORANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL,ORCONSE- QUENTIAL DAMAGES, WHETHER BASED ON CONTRACT,TORT,ORANYOTHERLEGAL THEORY. ASSISTANCE Product maintenance agreements andothercustomer assistance agre

9、ementsareavailable for Hewlett- Packard products. For any assistance, contactyournearest Hewlett-Packard Sales and Service Office. Addresses are providedatthe backofthis manual. fI I I L RadioFans.CN 收音机爱 好者资料库 S-PARAMETER TEST SET .5-12.4GHz 8746B Serials Prefixed: 1114A This manual applies directl

10、ytoHP Model 8746B S-ParameterTestSetUnits having serial numbers prefixed1114A. Serials Prefixed:983- See Section VII, Manual Changes Other Prefixes: See Instruments CoveredbyManual, Section I CopyrightHEWLETT-PACKARD COMPANY1971 1400FOUNTAINGROVEPARKWAY,SANTAROSA,CALIFORNIA,U.S.A. Manual Part No. 08

11、746-90007 Microfiche Part No.08746-90008Printed:AUG,1971 FlidlHEWLETT aIPACKARD TableofContents TABLE OF CONTENTS Model 8746B SectionPageSectionPage IGENERAL INFORMATION.1-14-8.Source Match .4-5 1-1.Introduction1-14-9. Return Match .4-5 1-3.Instruments Covered by Manual .1-1 1-7.Operating Informatio

12、n Supplement.1-1 1-9.TableofSpecifications .1-1 t. 1-11. Supplementary Operating Characteristics.1-1 VADJUSTMENTS . 5-1 1-13. Recommended TestEquipment.1-1 5-1.Introduction 5-1 1-15. Description1-1 5-3.Equipment Required5-1 1-17.Options.1-1 5-5.Electrical Adjustments .5-1 1-19.Option 0011-2 5-7.Mech

13、anical Adjustments5-1 1-21.Option0021-2 1-23. Accessories Supplied.1-2 1-25. Equipment Required but Not Supplied1-2 VIREPLACEABLE PARTS 1-27. Equipment Available1-2 6-1 . 6-1. 1-28.Model 11608A Transistor Fixture1-2 Introduction6-1 1-30.Other Reference Line Coaxial Cables1-2 6-6.Ordering Information

14、6-1 1-32.Model 11605A Flexible Arm .1-3 IIINSTALLATION2-1 2-1.Initial Inspection .2-1VIIMANUAL CHANGES7-1 2-2.Mechanical Check2-17-1.Introduction7-1 2-4.Electrical Checks .2-1 2-6.Claims for Damage2-1 2-9.Preparation forUse.2-1 2-10.Power Requirements2-1 2-12.115/230 Volt Operation2-1VIII SERVICE1 2

15、-14. Three-Conductor Power Cable2-18-1.Introduction8-1 2-17. Operating Environment2-18-2.PrinciplesofOperation .8-1 2-20. Storage and Shipment2-18-6.Recommended Test Equipment .8-1 2-21.Packaging2-1 8-12. Component Trouble Isolation.8-1 8-17. Assembly Replacement.8-2 IIIOPERATION.3-18-18. Pushbutton

16、 Circuit Boards8-2 3-1.Introduction3-1 8-20.Switch TreeA.8-2 3-3.Panel Features3-2 8-22.Switch Tree B .8-4 3-5.Operating Precautions3-2 8-25.Step Attenuator (A6)Assembly .85 3-6.MaximumRFPower3-2 8-27.Line Stretcher (A5) Assembly8-6 3-8.RFPowertoTest Device3-28-28. ,Directional CouplerDC1(Portf 3-10

17、.MaximumDConRFLines3-2 Coupler) 8-7 3-12. OperatorsCheck.3-2 8-30.Directional CouplerDC2(Port 2 3-14. Operating Instructions .3-2 Coupler) 8-8 3-t5.General Measurement Description3-2 8-32.Directional CouplerDC38-9 3-18.Transistor Bias Supply Connection 8-34.Port Coupler 10dBAttenuator8-9 and Adjustm

18、ents .3-3 8-36.Port 1 and Port 2 Connector 3-21.BiasUsinga DualDCPower Supply3-9 Coupling Assemblies8-10 3-24. Remote Operation3-10 8-38. Repair8-10 3-28.Remote Operation Requirements3-10 8-39.Replaceable Parts8-10 3-30. Operators Maintenance3-11 8-41.Location Diagrams8-10 3-31.Care ofAPC-7Connector

19、s.3-11 8-43. Troubleshooting8-11 3-39.Fuses3-11 8-44.Introduction8-11 3-42.Line Switch Bulb Replacement3-12 8-48.Troubleshooting Procedure8-11 3-44.Pushbutton Switch Bulb Replacement .3-12 8-50.Troubleshooting from Front-Panel Indications . 8-11 IVPERFORMANCETESTS4-1 8-52.Troubleshooting from the Di

20、splay 4-1.Introduction4-1 Indicator 8-11 4-3.Equipment Required4-1 8-64. Schematic Diagram Notes .8-12 4-5.Test Record4-18-65. Schematic Symbols8-12 4-7.Directivity .4-18-67. Selected/Non-Selected Terminology8-12 c ii Model 8746BListoflliustrationsandTables LIST OF ILLUSTRATIONS 5-1.Digital Counter

21、Friction Clutch Adjustment . 5-2 6-1.Cabinet Parts. 6-13 6-2.FrontPanel Assembly 6-14 6-3.REFERENCEigeTable. 8-26 iii 4-1.Performance Test Record . 6-1.Reference Designators and Abbreviations Used in Parts List. 6-2.Replaceable Parts. .4-8 6-1 .6-3 Table 8-1.Servicing Aids. 8-2.Schematic DiagramNote

22、s. 8-3.Paths Common to Various S-Parameter Paths 8-4.S-Parameter Truth Table. 8-5.S-Parameter Voltage Table. Page 8-1 8-3 8-18 8-20 8-20 General Information 8746B Model 8746B POWER CABLE 36-PIN CONNECTOR REFERENCE LINE RACKMOUNTINGKIT Figure1-1.Model8746Band Accessories 1-0 Model 8746B SECTIONI GENE

23、RALINFORMATION GeneralInformation I I I I r I I 1-1. INTRODUCTION 1-2. This manual contains allinfonnationrequired toinstall,operate,test,adjustandservicethe Hewlett-Packard Model 8746B S-Parameter Test Set. This section coversinstrumentidentification, description, options, accessories,spcificaionsa

24、nd otherbasic information. IncludedWIththIS manual istheOperating InformationSupplementwhichis areprintofthefirstthreesectionsofthis manual. Figure 1-1 showsalloftheequipmentnormally suppliedwiththeinstrumentforthestndard ModelorOption001or002.Table 1-1 mthe manual istheTableofSpecifications. 1-3. I

25、NSTRUMENTS COVERED BYMANUAL 1-4.TheModel 8746B S-ParameterTestSetcar- ries a nine-digitandone-letter serialnumber.The firstfourdigitsformtheserial prefixnumber.The last five digitsoftheserialnumberformthe sequential suffix, uniquetoeach individual instru- ment. 1-5. This manualisdirectly applicablet

26、oinstru- mentswithSerial Prefix numbersthesame as those listedonthetitlepage.ForinstrumentswithSerial Prefix numbers lowerthanthoselistedonthetitle page, refertoSection VII.Importntinformation forcorrecting errors,andfor adaptIngthecontents ofthismanualtocover instrumentsmanufactured aftertheprintin

27、gofthemanual, is provided in a yellow Manual Changessuppleentinsertedunder Ithefrontcoverofthemanual.These supplements are keyedtothemanualsprintdateandpart number,bothofwhich appearonthetitle page, andtheyare revised asoftenas necessarytokeep themanual currentandaccurate.Tomaintainthe manualascurre

28、ntandaccurateaspossible, Hewlett-Packard recommendsthatyouperiodically requestthelatest Manual Changes supplement. Complimentary copiesofthese supplements are available from all Hewlett-Packard offices. 1-6.Forinformation concerning serialnumber prefixesnotlistedonthetitle pageorin a Manual Changes

29、supplement,contactthenearest Hewlett- Packard office. 1-7. OPERATING INFORMATION SUPPLEMENT 1-8. Packaged with this basic manualisan Opera- ting Information Supplement whichisa reprintof thefirst three sectionsofthis manual. This supple- mentshould staywiththeinstrumentforuseby theinstrumentpperator

30、.Additional copiesmabe ordered throughyourlocal Hewlett-Packard offIce. 1-9. TABLE OF SPECIFICATIONS 1-10. Complete specificationsc:rrelistedinTable 1-1.Thesespecificationsaretheperformance standardsorlimits against which.theinstrument maybe tested. Use these limitswhentestingfor incoming inspection

31、oratanytimetheperform- anceoftheinstrumentis in question. 1-11. SUPPLEMENTARY OPERATING CHARACTERISTleS 1-12. Table1-2listssupplementaryoperating characteristics. These values arenotspecifications, butare includedfortheinformation.oftheuser. 1-13. RECOMMENDED TEST EQUIPMENT 1-14. Table 1-3 lists rec

32、ommendedtestequipment forperformancetesting,troubleshooting,and maintenance. 1-15. DESCRIPTION 1-16. The HP Model 8746B S-ParameterTestSet containsthenecessarymicrowavecircuitsfor measuring all four s-parametersofanactiveor passive two-port device from0.5to12.4GHz.he Model 8746B is designed primaril

33、ytobeused WIth theHewlett-Packard Model11608ATransistor Fix- ture.However, measurementsonothermicrowave devicesmayalsobemadebyinsertingtheneces- sary coaxial line-lengths intherea:panelrefere?ce line.TheModel8746Bis used WIth a compatIble phase-amplituderatioindicator, such astheHP Model8410ANetwork

34、 AnalyzerorModel8405A VectorVoltmeter.Measuring circuitsforeach s-parameter are automaticallysetwithfront-panel pushbuttonsorwithremote-contactclosures. AttenuationoftheincidentRFsignals can alsobe setwithfront-panelpushbuttonsorremote contact-closures. Figure 3-4isa diagramoftheRF circuits forthest

35、andard 8746B. 1-17. OPTIONS 1-18. Figure3-5isa diagramoftheRFcircuitsfor Option001 andOption002.Themain difference intheinstruments containinganoptionisthatthe inputandoutputcables goingtotheswitch trees 1-1 GeneralInformation havebeeninterchanged.Option002also removes the10-dBattenuatorsintheportco

36、uplersto increasethesignal levelatthetestport. 1-19.Option001 1-20.TheHP Model8746B,Option001,has a signal levelatthetestportthatis10dB higher thanthestandardinstrumentforthesame levelof RFpowerintothe.testset.This allows making large-signal measurementsonpowertransistorsand mixers. 1-21.Option002 1

37、-22.TheHP Model8746B,Option002,has a signal levelatthetestportthatis20dB higher thanthestandardinstrumentforthesame levelof RFpowerintothetest,set.Thisoptionisusually usedforautomaticmeasurementoflarge-signal parametersorlarge dynamic-range measurement. Thisoptionis normallylimitedtouseinautomatic m

38、easurementsystemssincesource-matchand return-matchspecifications are degradedinthis configuration. 1-23.ACCESSORIES SUPPLIED 1-24. A rack-mountingkit,apowercable (HPPart No.8120-1348),a reference line coaxial cable (HP PartNo.11604-20021),anda 36-pinconnectorare furnishedwiththe8746B.(See Figure 1-1

39、.)The rack-mountingkitcontainsallthehardware needed toadapttheModel8746Bcabil1etforinstallation inequipmentrackswithstandard19-inch spacing. Instructionsforconversiontorackmountingare includedwiththekit.Thereference line coaxial Model8746B cable furnished willenableyoutomaketransistor measurementswi

40、ththe8746Busingthe11608A TransistorFixture.When making microwave hard- waremeasurementsotherreference-line coaxial cablesmayneedtobesubstituted.Refertothe paragraphentitledEquipmentAvailableforfur- therinformation. 1-25.EQUIPENTREQUIRED BUT NOT SUPPLIED 126.TheModel8746Bmustbeusedwitha phase-amplitu

41、deratioindicator,suchastheHP Model8410ANetworkAnalyzerSystemorthe Model8405AVectorVoltmeter. 1-27. EQUIPMENTAVAILABLE 1-28.Model11608ATransistor Fixture 1-29.Transistors aretestedwiththeModel8746B byusinganadditionalfixture,theHewlett-Packard Model11608ATransistorFixture(Figure 1-2). RefertotheModel

42、11608AOperatingNotefor operatinginstructionsonthistransistorfixture. 1-30.Other .Reference Line Coaxial Cables 1-31.Thereference line coaxial cable furnished withthe8746Ballows transmissionandreflection teststobemadeontrap.sistors usingthe11608A. Tomakereflectionmeasurementsonmicrowave hardware,theu

43、seofashorterreference line (HP PartNo.08745-20064)isrecommended.Micro- wave transmissionmeasurementsrequiretheuseof a longer reference line (HPPartNo.08746-20031). Unlesstheportspacingonthedeviceundertestis Figure1-2.Model11608ATransistorFixtureMountedonaModel8746B 1-2 Model8746B thesame asonthe8746

44、,anadditionalcomponent, a Flexible Arm HP Model11605A,willbeneces- sary. 1-32. Model 11605A FlexibleArm 1-33.Iftheportspacingofthedeviceundertestis notthesame asthatoftheModel8746B,a Flexi- GeneralInformation bleArm,Hewlett-Packard Model11605A,should beusedononeportofthedeviceundertestwith theotherp

45、ortconnectedtothe8746B.TheModel 11605Aconsistsofthreerotary-armsconnectedby threeswivel-adapters.rhisconfigurationallows almostanycoaxialtwo-portdevice to.becon- nectedtothe8746B. t.J!o. Table1-1.Model8746BSpecifications FrequencyRange:0.5to12.4 GHz. Directivity:30 dB, 0.5to4.0 GHz 26 dB, 4.0to12.4

46、GHz. SourceMatch:1p0.13 (1.3 SWR), standard model only. ReturnMatch:2p0.13(1.3 SWR), standard model only. ReferencePlaneExtension: Adds 0 to 15 cm (30 cm in transmission path)to reference line; calibrated by digital dial indicator. Indicatorisadjustable for initial calibration. Connectors: RF Input:

47、 Type N female, stainless steel Test Ports:APC-7type Reference and Test Channel Outputs: mates withAPC-7precision connectors. MaximumPowertoRFInput:2watts. InsertionLoss:RF InputtoTest Port, Standard Configuration - Nominal 21 dB, Option001-Nominal 11 dB, Option 002 - Nominal 1 dB. RF InputtoReferen

48、ce Channel Output - Nominal 30 dB. RemoteProgramming: Selected by closing contactof36-pin rear panel connectortocommon. S-Parameter Selection:Byclosing 2 contactsof 36-pin rear panel connectortocommon. IncidentAttenuation:Byclosing3 contactsof 36-pin rear panel connectortocommon. Rear-panel switch a

49、llows manual attenuator opera- tion when s-parameters are remotely controlled. Remote Requirements: Switch closuretocommon, or use a transistor switch. Contactisat12 volts and shorttocommon will draw 12 rnA. Noise immunity 2 V peak. TransistorBiasing: Bias and bias sensing connections are madetothe biasing networks built into the 8746B via the 36-pin rear-panel connector. MaximumBias: 100 Vdc, 500 rnA. Maximum currentof1 amp when bias and bias sense circuits are operated in parallel. Configuration: Standard: Re