HP-7414A-Manual 电路图.pdf

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1、HP Archive This vintage Hewlett Packard document was preserved and distributed by Pleasevisituson the web! Scanned by on-line curator: Tony Gerbic * For FREE Distribution Only * RadioFans.CN 收音机爱 好者资料库 OPERATINGANDSERVICEMANUAL THERMAL-TIP RECORDER 7414A HEWLETTi:IPACKARD RadioFans.CN 收音机爱 好者资料库 rr

2、, ( ,MANUALCHANGES MODEL7414A THERMAL-TIPRECORDER (MANUALTITLE) MANUALSERIA LS PRE FIXED_-1-1-45A_ MANUALPRINTEDMARCH,1972 MAKEALLCHANGESINTHISMANUALACCORDINGTOTHEERRATABELOW.ALSOCHECKTHEFOLLOWINGTABLEFOR YOURINSTRUMENTSERIALPREFIX(FIRSTTHREEDIGITSOFANEIGHTDIGITSERIALNUMBER)ANDMAKEANYLISTED CHANGE(S

3、)INTHEMANUAL. SERIALPREFIXMAKEMANUALCHANGESSERIALPREFIXMAKEMANUALCHANGES ALLINSTRUMENTSERRATA 1?O?A fl-lANr.E 1 1207ACHANGE2 ERRATA Page5-4,Paragraph5-15, Stepg: Page5-5,D,3,Stepc: Page5-10,Stepa (4): Page5-23,Paragraph5-47, Stepg: Page5-25,Figure5-14: Page6-6,Table6-1: Page6-12,Table6-1: Page6-14,T

4、able6-1: Page6-16,Table6-1: ChangereferencetoParagraph5-57toParagraph5-59. ChangeFigure6-15referencetoFigure5-4. Shouldread.byleveringfromfrontoftopbar. ChangesteptoreadRemovesnapringholdingsprocket todriverollershaftusingsnapringpliers. C-ring0510-1017shownhasbeenchangedtosnap-ring 0510-1012,whichm

5、ustberemovedwithsnap-ringpliers. AddonA3MP1,7124-1605,Label59-61(Hz). ChangeA3J6,receptacleto1251-2995,andA3J5to9100-3198. ChangeA9T1to07754-60470. AfterA10MP5,addattachingpart0510-1012;Ring,retaining. A10A1MP26waschangedinerror;seeChange1. AddtoOption008,7124-1604,Label49-51(Hz). March,1972 DATE PU

6、B.100-1 07414-91999 MANUALPARTNUMBER A SUPPLEMENT RadioFans.CN 收音机爱 好者资料库 CHANGE1: CHANGE2: MANUAL CHANGES,MODEL7414A(Contd) Page6-14,Table6-1: OnA10A1MP26,Add07754-00880Spring,SolenoidAdjustment; Delete(1)07754-00840Spacerand(3)07754-00860Shim. Page6-13,Table6-1: DeleteA10W1,Cable,interlock. Page6-

7、27,Figure6-12: DeleteINTERLOCKASSEMBLYatbottomcenterofschematic; SubstituteablackjumperacrossthepinsontheTransferBoardA3A1. r I I I I I I 1, J 0-18937-4 0-18930-6 March,1972- 2 -A ) I ) 1 t I I , I ( ( MANUALCHANGES MODEL7414A THERMAL-TIPRECORDER (MANUALTITLE) MANUALSERIA LS PR EFIXED-=1=1c.:.4.L.5.

8、:.:A:.-_ MANUALPRINTEDMARCH,1972 MAKEALLCHANGESINTHISMANUALACCORDINGTOTHEERRATABELOW.ALSOCHECKTHEFOLLOWINGTABLEFOR YOURINSTRUMENTSERIALPREFIX(FIRSTTHREEDIGITSOFANEIGHTDIGITSERIALNUMBER)ANDMAKEANYLISTED CHANGEIS)INTHEMANUAL. SERIALPREFIX ALLINSTRUMENTS !.!.NEW ORREVISEDITEM .6ERRATA MAKEMANUALCHANGES

9、 ERRATA SERIALPREFIXMAKEMANUALCHANGES Page5-22,Figure5-12:OnSpeedControlConnections,Pin3connectsto ORANGEwireandPin4connectstoYELLOWwire. Page5-28,Figure5-18:Inlowerrightcorner,specificationforSHAFTEND PLAYofgearboxshouldbe0.007inch(0.018rmn). April,1972 DATE PUB.100-1 07414-91999 MANUALPARTNUMBER B

10、 SUPPLEMENT I I I I I I I I I I I I I 1 ) 074141 HEWLETTPACKARD MODEL 7414A THERMAL-TIP RECORDER SERIALSPREFIXED:1145A This manual applies directly toHPModel 7414A Thermal Tip Recorders having serial numbers pre- fIxed 1145A. OTHERPREFIXES: For instruments having prefixes lower than 1145A, refer to

11、AppendixI,Backdating Supplement. For higher prefixes,seethe manual change sheets pro- vided. OPERATINGANDSERVICEMANUAL 07414-91999 Copright1972 Hewlett-Packard MedicalElectronicsDivision 175WymanStreet Waltham,Massachusetts02154 PRINTED, MARCH1972 / TableofContents TABLE OF CONTENTS Model 7414A Para

12、graphPageParagraphPage SECTIONI,GENERALINFORMATION1-14-35.Paper Feed4-9 I-I.Introduction1-14-37. Recorder Power Supply and 1-3.Four-Channel Recorder1-1Regulator Circuits4-9 1-9.Applications and Specifications1-14-39.RecorderDCPower Supplies4-9 1-13. Accessories1-14-41.Regulator/Oscillator.4-11 4-49.

13、Marker Circuits.4-11 SECTIONII,INSTALLATION2-14-54.440HzOscillator.4-12 2-1.Initial Inspection2-14-57.2400HzOscillator.4-12 2-3.Mechanical Check2-1 2-5.Performance Tests2-1SECTIONV,MAINTENANCE5-1 2-7.Damage Claims2-15-1.Introduction5-1 2-9.Storage2-15-3.Test Equipment and Lubricants5-1 l 2-11. Insta

14、llation2-15-5.Performance Checks5-1 2-13. Preamplifier Installation2-15-8.Variable Line Voltage5-2 2-15. Power Connections2-15-10. Preventive Maintenance5-2 2-18 Signal Connections2-15-12.Operational Checks and Inspection5-2 2-22. Tape System Connections2-25-16.Cleaning5-9 2-24. Remote Control and M

15、arker Connections2-25-18.Lubrication5-9 5-20. Electrical Checks.5-10 SECTIONIII,OPERATION3-15-22. Adjustments and Minor Repairs.5-10 3-1.Introduction3-15-24.Paper Drive Adjustments.5-10 3-3.Control Locations3-15-29.Stylus Adjustments.5-12 3-5.System Operation3-15-38. Corrective Maintenance. 5-18 5-4

16、0.Galvanometer Removal SECTIONIV,PRINCIPLES OF OPERATION4-1and Replacement.5-19 4-1.Introduction4-15-43.Drive Unit Removal and Replacement. 5-21 4-4.Preamplifier Power Supply Circuits4-15-46.Paper Table Disassembly for Drive 4-7.Recorder Signal Circuits4-1Roller Replacement.5-23 4-11.Stylus Linkage4

17、-15-48.Gearbox Removal and Overhaul.5-23 4-13.Galvanometer Position Feedback4-15-55.Solenoid Adjustment.5-34 4-17.Galvanometer Damping4-25-58.Marker Assembly Maintenance 5-34 I 4-20.Heat Control Circuit4-2 4-22.Power Control Circuits4-2SECTIONVI,RECPLACEABLE PARTS6-1 4-26. Chart Drive4-76-1.Introduc

18、tion6-1 4-28.Chart Motor4-76-4.Reference Designations6-1 4-30.Speed Control4-76-9.Ordering Information6-2 LIST OF ILLUSTRATIONS FigurePageFigurePage I-I.Model 7414A Recording System2-5.Tape System Connections Using Control and Optional Configurations1-0Sections 4681A and 4682A2-6 1-2.8800 Series Pre

19、amplifiers1-32-6.Remote Control and Marker Connections2-7 2-7.Option 001 Rack Mounting Kit2-8 2-1.Recorder Access for Receiving Inspection2-2 2-2.Recorder Rear Panel Connections and Fuse 3-1.7414A Recording System, Control Locations.2-3 Locations3-2 2-3.Recorder and Mobile Cart Power 3-2.Paper Loadi

20、ng Procedure3-3 Connections2-4 2-4.7414A SystemInputCable Preparation2-54-1.Model 7754A Recorder, Block Diagram4-0 07414-1 Model7414A TableofContents LIST OF ILLUSTRATIONS(continued) FigurePage Figure Page .6-22 .6-23 .6-24 .6-25 .5-32 .5-33 . 5-33 . 5-34 .6-3Model 7754A Recorder(EndItern) Unit Hous

21、ingAl(07754-60270), Parts Location Diagram. 6-19 Control Panel A2(07754-60240)Subassemblies, Parts Location Diagram. 6-19 Control Panel A2 Schematic Diagram. 6-206-4. 6-1. 6-2. 6-3. 5-22. Overriding Clutch Lubrication (Secondary Shaft) 5-23. Gearbox ShaftEndPlay Adjustment 5-24. GearboxInputChain Te

22、nsion Adjustment. 5-25. Marker Assembly Adjustment and Removal. 6-5.Control Switch Board A2A1(07754-60120), Component LocationDiagram. 6-21 6-6.HeatPotentiometerBoard A2A2 (07754-60130), ComponentLocation Diagram . 6-21 6-7.Preamplifier Power Supply Board A2A3 (07754-60140)ComponentLocation 6-8.Powe

23、r Supply A3 (07754-60050) Subassemblies, Attachments 6-9.Power Supply A3, Parts Location Diagram 6-10. Power Supply A3, Schematic Diagram (Less A3A1). 6-11. Transfer BoardA3Al(07754-60150), ComponentLocation Diagram.6-26 6-12. Transfer BoardA3Al,Schematic Diagram.6-27 6-13. Driver Amplifier A4, A5,

24、A6, A7 (07754-60170) ComponentLocationDiagram. 6-28 6-14. Driver Amplifier A4, A5, A6, A7; Schematic Diagram6-29 6-15. Regulator/Oscillator A8(60Hz, 07754-60180), orA9(50Hz, 07754-60181),Component Location Diagram andSchematic. 6-30 6-16. Drive UnitAI0(07754-60250)Subassemblies, Parts Location Diagr

25、am6-31 6-17. GearboxAI0Al(07754-60040),Parts Location Diagrams. 6-32 6-18. GalvanometerAll,A12, A13,A14 (07754-60070), Parts Location Diagram. 6-33 6-19. Marker A15, A16(07754-60350),Parts Location Diagram. 6-34 6-20. Oscillator,2400HzA17(868-500ACI3). 6-34 6-21. Oscillator,440HzA18(868-500ACI4).6-3

26、5 6-22. Accessories, A19 (Reference). 6-35 5-13 5-14 5-15 4-3 4-6 4-7 4-8 4-9 4-4 4-5 4-5 5-12 5-3 5-11 5-16 5-18 5-31 .4-10 4-12 4-12 .5-19 .5-20 .5-21 .5-22 .5-24 .5-25 .5-26 .5-27 .5-28 .5-28 .5-29 .5-29 5-1.Test and Adjustment Points 5-2.Test Cable, Plug and Fixtures 5-3.Driver Amplifier and Reg

27、ulator/ Oscillator Test. 2.Preamplifier Power Supply Circuits, Simplified Diagram 4-3.Recorder Signal Circuits, Simplified Diagram. 4.Galvanometer Position Feedback Circuit. 4-5.Galvanometer Damping 4-6.Recorder PowerControlCircuits, Simplified Diagram 4-7.Chart Drive Gears 4-8.Gearbox Power Flow 4-

28、9.Paper Feed Path 4-10. Recorder Power Supply and Regulator Circuits, Simplified Circuit 4-11.440Hz Oscillator Circuit 4-12. 2400 Hz Oscillator Circuit 5-4.Regulator/Oscillator Board Test Points. 5-5.Driver Amplifier Board Test Points 5-6.Recorder Lubrication Points 5-7.Paper Brake Felt Cover Remova

29、l and Replacement. 5-8.Stylus Adjustments. 5-9.Channel Time Synchronization Adjustment. 5-10. Stylus RemovalandReplacement 5-11. Stylus Lapping Procedure 5-12. Drive Unit Removal. 5-13. Paper Table Removal. 5-14. Drive Roller and Table Link Removal (Part1). 5-15. Drive RollerandTable Link Removal (P

30、art 2) 5-16. Gearbox Removal. 5-17. Drive Chain Removal. 5-18. Gearbox Inspection and Solenoid Adjustment 5-19. Gearbox Cover Removal 5-20. GearboxShaftRemoval 5-21. Spring Clutch Lubrication (Primary Shaft) LIST OF TABLES Table 1-1.Model7424ARecording System Specifications(7754ARecorder) 1-2.Model7

31、414ARecording System, EquipmentOptions 5-1.RecommendedTestEquipment 5-2.LubricantsandSolvents Required Page 1-2 1-3 5-1 5-2 Table 5-3.Electrical Performance Checksand Adjustments 54.Paper Drive Troubleshooting 6-1.Replaceable Parts 6-2.Code ListofManufacturers Page .54 .5-15 .6-3 .6-18 07414-1 jj Se

32、ction I General Information 1-0 Model 7414A MODEL7414ARECORDERIN BENCHTOPENCLOSURE MOBILECARTOPTION054 Figure 1-1. Model 7414A Recording System and Optional Configurations 07414-1 Model7414A SECTION I GENERALINFORMATION Section I General Information 1-1.INTRODUCTION. 1-2. This manual contains instal

33、lation, operating, and main- tenanceinstructionsforyourHewlett-PackardModel 7414A Recording System, which has four channels, and produces four recorded traces with heated styli on heat- sensitive chart paper Permapaper. Other manuals, for use with the 8800-Series Preamplifiers, and forotherequip- me

34、nt ordered with the 7414A System are provided sepa- rately since a varietyofpreamplifiers, scopes, tapere- corders,computerterminals and control unitsmaybe used with the recording system. 1-3.FOUR-CHANNELRECORDER. 1-4. The Model 7414A Recorder (Figure 1-1)atthe core ofthe system,issuppliedmountedin

35、abenchtopenclosure. Itisoptionally availablemountedina mobile cart, or unenclosed, for mounting in an existingequipmentrack. 1-5. The Recorder housesuptofour Hewlett-Packard8800 SeriesPreamplifiers and suppliesthemwithoperating power and signal connections. The preamplifiers, selected for each chann

36、el and ordered separately, are installed and tested with the recorderatthe factory.Itiseasytochange the functionofany channelbyloosening two front panel thumbscrews and replacing the preamplifier with a different model. 1-6. The Model7414ARecording System records signals monitoredfromdevices,process

37、es,or transducers. To monitora signal, connect the signal cable to theinput connector for the assigned channelonthe recorder rear panel. The rear panel inputs are connectedtosignal condi- tioning preamplifiersmountedinthe recorder. Each pre- amplifieroutputisapplied to a power amplifierthatdrives on

38、e recording stylus.Fromthe preamplifieroutputon,all four channels are identical.Foreaseofmaintenance, all electrical adjustments are accessible from the front or top ofthe recorder, and most assemblies can be removed with the recordermountedin the enclosure, mobile cart, or equipmentrack. 1-7. The r

39、ecorder uses Z-fold chart paper for convenient access to anypartofthe recording. The folded paper permits rapid scanningofthe recordtoassess response trends. All pages are numbered to allow insertion in a notebook,orthe complete record may be filed in the original flatbox(pages are 8 x 12 inches,20

40、x30cm, approximately). A new packofchart paper can be loaded quickly, in lessthantenseconds,tominimize lossof recording continuity. 07414-1 1-8. The recorder may be remotely controlled to mark events, start, or go on standby. Two event markers are provided; one permits the user to indicate the start

41、 and finishofanevent,thesecondprovidestime interval marking in minutesorseconds. 1-9. ApplicationsandSpecifications. 1-10. A wide selectionoftransducers and Hewlett-Packard preamplifiers are available for research, laboratory, and industrial applications. The following list gives some typical applic

42、ations where data can be measured, monitored, and recorded using the recorder and Hewlett-Packard preampli- fiers: Engine Testing Aircraft, Missile, and Space Flight Analysis Seismographic Studies Environmental Pollution Monitoring Telemetry Systems Production Control Relative Displacement and Veloc

43、ity Monitoring 1-11. Hewlett-Packard will be gladtocooperate in the selectionoftransducers and preamplifiers for any particular measurement, and to send you informationasadditional instruments are developedtoprovideyourrecording system withothercapabilities.Forhelp in expandingyoursystem, contact th

44、e field engineeratany Hewlett-Packard Sales/ Service Office listed in thebackofthis manual. 1-12. Table1-1gives the specifications for the Model 7754A Recorder, apartofthe Model7414AThermal Tip Recording System, and Table1-2lists the recorder options available. Preamplifier specifications will be fo

45、und in the separatepreamplifiermanuals.Preamplifierfrequency response and rise timemustbe modified by the frequency response and rise time specifications given for the recorder. Recording qualityisimproved by the recorders low levelof hysteresisdistortion.Minorwaveformdetailsarenot obscured by recor

46、der-contributed distortion. 1-13. 8800 Series Preamplifiers(7414ASystem). 1-14. The7414ARecording Systemisfactory assembled forusewiththesolid-state8800Series Preamplifiers (Figure 1-2). They plug in interchangeably from the front ofthe recorder. Signal connections are madeatthe rear, butsignalscanb

47、e monitoredfromthefrontofthe preamplifiers. The general characteristicsofeach preampli- fier are given in the following paragraphs.Forcomplete information see the preamplifier instruction manual. 1-1 Section I General Information Table 1-1. Model 7414A Recording System Specifications (7754A Recorder

48、) Model 7414A 1-2 SENSITIVITY:2.5 volts (0.5 volts) full scale. (Adjustable.) FREQUENCYRESPONSE:Flatwithin0.5dB (6%), dc to50Hz, reference 50 div. at 10 Hz; down lessthan 3dBat 100 Hz, reference 10 div. at 10 Hz. POWERRESPONSE:At 50Hz:More than 50 divi- sions (full scale). At 100 Hz: More than 10 di

49、visions. CHART SPEEDS:0.25,0.5,1.0,2.5,10,25,50,and 100 mm/sec. Speed Regulation:1%.PaperWeave: Lessthan 0.5 mm. (Speeds selectedviapanel push- buttons.) INPUT IMPEDANCE:Loading at preamplifier out- putis50 kilohms, min. NOISE:Not discernible with recorder input open or shorted. GAINSTABILITY:(One hour warmup). Tempera- ture: 0.25 div/25C, from 20C to 40C. Line Volt- age:0.25 divisions from 103 to 127 vac. ZERODRIFT:(One hour warmup, input shorted). Temperature: 0.25 div/25C, from