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Fluke instruction manual Instruction Manual, 1.5725A Overall Block Diagram

Models: 5725A

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Instruction Manual

5725A

Instruction Manual

Figure 4-1. 5725A Overall Block Diagram

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Fluke instruction manual Instruction Manual, 1.5725A Overall Block Diagram

Contents

Amplifier 5725AInstruction Manual Page Table of Contents 5725A Theory of OperationCalibration and Verification 5725A Instruction ManualTitle List of TablesTable 5725A Title List of FiguresFigure Instruction Manual 5725Aviii Bescheinigung des Herstellers/Importeurs Interference InformationDeclaration of the Manufacturer or Importer Page LETHAL VOLTAGE OPERATOR SAFETY SUMMARYHIGH VOLTAGE Terms in this ManualUse the Proper Power Cord Symbols Marked on EquipmentPower Source Use the Proper FuseDo Not Service Alone SERVICING SAFETY SUMMANYFOR QUALIFIED SERVICE PERSONNEL ONLY Use Care When Servicing With Power OnGet Help FIRST AID FOR ELECTRIC SHOCKFree the Victim From the Live Conductor Never Accept Ordinary and General Tests for DeathIntroduction and Specifications Chapter5725A Instruction ManualIntroduction Where to Go From Here 5700A Operator Reference Guide How to Use the Manuals5700A Operator Manual 5700A Remote Programming Reference GuideSpecifications 5700A Service ManualDC Voltage Range Resolution Introduction and SpecificationsSpecifications Absolute UncertaintyAC Voltage 5725AInstruction Manual AC Voltage continued Introduction and SpecificationsSpecifications AC Voltage continued 5725AInstruction Manual Voltage RangeTwo-WireAdder active compensation Note Lead Introduction and SpecificationsSpecifications Resistance Nominal ValueFour-Wire Two-WireCompFour-Wire 5725A Instruction ManualDC Current Introduction and SpecificationsSpecifications AC Current 5725AInstruction Manual AC Current continued Introduction and SpecificationsSpecifications 5725A ResolutionResolution Instruction ManualGeneral Specifications Introduction and SpecificationsSpecifications Temperature performance: Operating: 0C to 50C5725A Instruction ManualPlacement and Rack Mounting InstallationService Information Connecting to the 5700A Calibrator5725A Instruction ManualIntroduction Unpacking and InspectionInstallation TYPE 5725AInstruction Manual VOLTAGE/CURRENTCooling Considerations Service InformationPlacement and Rack Mounting Service InformationConnecting to the 5700A Calibrator Figure 2-2.Correct Way to Dress Interface CableSelecting Line Voltage Selecting Line VoltageAccessing the Fuse wCautionConnecting to Line Power Connecting to Line Power5725A Instruction ManualOperating Notes Chapter5725A Instruction ManualIntroduction Operating NotesPOWER Front Panel FeaturesFigure 3-1.Front Panel Features 5725ATable 3-1.Front Panel Features A B C D E F G HRear Panel Features 5725A STANDBY Indicator5725A Rear Panel FeaturesFigure 3-2.Rear Panel Features Instruction ManualCALIBRATION Switch A B C D E F G H ITable 3-2.Rear Panel Features 5700A CALIBRATOR ConnectorTurning on the 5725A Amplifier Warm Up5725A Operating Functions and Modes StandbyVoltage Standby Current Standby 5725A Operating Functions and ModesVoltage Operate 3-10Conditions That Activate the 5725A Current Operate3-11 Conditions That Activate the 5725A 3-12Theory of Operation ChapterHigh Voltage Heat Sink Assemblies High Voltage Sense Assembly A6High Voltage Amplifier A3 High Voltage Amplifier FeedbackOverall Functional Description IntroductionInstruction Manual Figure 4-1.5725A Overall Block Diagram5725A 1100V AC Range Functional Description 11A Range Functional Description Voltage and Current Standby Modes Operation in the 11A DC RangeOperation in the 11A AC Range Voltage StandbyDescription of the Out-GuardLines 5725A Side How the 5700A and 5725A Communicate4-10 4-11Description of the In-GuardLines 4-12Functional Summaries by Assembly 4-134-14 Interconnect Assembly A1Detailed Circuit Description 4-15Power Supply Assembly A4 4-16ASSEMBLY High Voltage Supply Section4-17 REF DESSwitching Section 4-18System Supply Section Current-LimitSection4-19 4-204-21 Digital Assembly A5Fan Supply Section 4-22Detailed Circuit Description Figure 4-2.Digital Assembly Block DiagramTheory of Operation aq19f.epsData Latch EEROM4-26 4-27Current Amplifier Assembly A2 Power Up and Reset CircuitryWatchdog Timer Break-DetectCircuitryaq20f.eps 5725AInstruction Manual Error Amplifier Section 4-35Monitor Section Output Stage Section4-36 4-374-38 Control and Switching SectionPower Supply Section 4-39Input Amplifier High Voltage Amplifier A34-40 4-41aq22f.eps Theory of OperationDetailed Circuit Description Window Comparator Integrator4-42 4-43Midstage Transconductance and Cascode Stage4-45 4-46Autobias Sense Circuit Autobias Current Source4-49 4-504-51 Signal TransformersHigh Voltage Amplifier Feedback 4-52High Voltage Sense Assembly A6 4-54aq21f.eps Theory of OperationDetailed Circuit Description Sense Amplifier Section 4-55±3.2V during calibration SIGNAL Analog Monitor Section4-56 STANDBY VOLTAGE LIMITS14-57 Analog Input Switching SectionSerial Interface/Guard Crossing Section 4-58Control Section 4-59AC Line Voltage Selection Section 4-605725A Instruction ManualCalibration and Verification Chapter5725A Instruction ManualCalibration and Verification Where to Find Further InformationIntroduction 5725A Instruction ManualMaintenance Chapter5725A Instruction ManualReplacing the Fuse IntroductionCleaning the Air Filter General Cleaning General CleaningCleaning PCA’s A. TOP VIEW Access ProceduresFigure 6-3.Assembly Location Diagram B. BOTTOM VIEWInitial Access Procedure wWarningHIGH VOLTAGE Accessing the Power Supply Assembly A4 Accessing the Digital Assembly A55725A WHEN REINSTALLING DIGITAL ASSEMBLYFigure 6-5.Accessing the Digital Assembly Instruction ManualAccessing the Current Amplifier Assembly A2 6-10Figure 6-6.Correct Way to Dress Cables Accessing the High Voltage Amplifier A36-11 Accessing the High Voltage Sense Assembly A6 6-126-13 Accessing the High Voltage Output TransistorsAccessing the Interconnect Assembly A1 6-14Enabling Front or Rear Binding Posts 6-159.Reinstall the top cover Troubleshooting Chapter5725A Instruction ManualIntroduction 5725A Fault CodesSelf Diagnostics 5725A Instruction Manual Table 7-1.5725A Fault CodesFAULT MESSAGEFAULT Self DiagnosticsTable 7-1.5725A Fault Codes cont MESSAGEManual Tests for Fault Isolation FAULT NO Manual Tests for Fault IsolationTable 7-2.Analog Monitor Faults MESSAGEProblem 4: Fault When Entering Current Standby Reduced-VoltageTroubleshooting ModeProblem 3: Fault When Entering Voltage Operate Problem 5 Fault When Entering Current OperateTesting the Power Supply By Itself Testing the Power Supply By Itself7-10 5725A Instruction ManualList of Replaceable Parts Chapter5725A Instruction ManualNewer Instruments How to Obtain PartsManual Status Information IntroductionTable 8-1.Final Assembly Service CentersAssembly Name 5725ATable 8-1.Final Assembly cont List of Replaceable Partsaq24f.tif Figure 8-1.Final Assembly5725A aq25f.tif Figure 8-1.Final Assembly contList of Replaceable Parts Instruction Manual Figure 8-1.Final Assembly cont5725A aq26f.tifaq27f.tif Figure 8-1.Final Assembly contList of Replaceable Parts Instruction Manual Figure 8-1.Final Assembly cont5725A aq28f.tifaq29f.tif Figure 8-1.Final Assembly contList of Replaceable Parts Instruction Manual Figure 8-1.Final Assembly cont5725A aq30f.tifaq31f.tif Figure 8-1.Final Assembly contList of Replaceable Parts 5725A Table 8-2.A1 Interconnect PCAFigure 8-2.A1 Interconnect PCA List of Replaceable Parts5725A-1611 aq36f.epsTable 8-3.A2 Current Amplifier PCA 5725AInstruction Manual List of Replaceable Parts Table 8-3.A2 Current Amplifier PCA contTable 8-3.A2 Current Amplifier PCA cont 5725AInstruction Manual Reference Description DesignatorFigure 8-3.A2 Current Amplifier PCA List of Replaceable Parts5725A-1650 aq37f.epsTable 8-4.A3 High Voltage Amplifier PCA 5725AInstruction Manual Designator List of Replaceable PartsTable 8-4.A3 High Voltage Amplifier PCA cont Table 8-4.A3 High Voltage Amplifier PCA cont 5725AInstruction Manual R640,R642Figure 8-4.A3 High Voltage Amplifier PCA List of Replaceable Parts5725A-1661 aq38f.epsInstruction Manual Table 8-5.A4 Power Supply PCA5725A Table 8-5.A4 Power Supply PCA cont List of Replaceable PartsInstruction Manual Table 8-5.A4 Power Supply PCA cont5725A R351 R355 R361,R3625725A-1631 Figure 8-5.A4 Power Supply PCAList of Replaceable Parts aq39f.epsTable 8-6.A5 Digital PCA 5725AInstruction Manual Figure 8-6.A5 Digital PCA List of Replaceable Parts5725A-1650 aq40f.eps5725A Table 8-7.A6 High Voltage Sense PCAList of Replaceable Parts Table 8-7.A6 High Voltage Sense PCA contTable 8-7.A6 High Voltage Sense PCA cont 5725AInstruction Manual R154 R155 R156,R158,R168 R173 R162 R171 R172,R175Figure 8-7.A6 High Voltage Sense PCA List of Replaceable Parts5725A-1601 aq41f.epsInstruction Manual Table 8-8.A12 Transformer Enclosure Assembly5725A aq32f.tif Figure 8-8.A12 Transformer Enclosure AssemblyList of Replaceable Parts 5725A aq33f.tifList of Replaceable Parts aq34f.tifaq35f.tif 5725AInstruction Manual 5725A-1603 List of Replaceable PartsTable 8-9.A30 Inductor PCA Figure 8-9.A30 Inductor PCA5725A Schematic Diagrams Chapter5725A Instruction ManualFigure 9-1.A1 Interconnect PCA Schematic Diagrams5725A-1611 aq48f.epsFigure 9-1.A1 Interconnect PCA cont 5725AInstruction Manual Schematic Diagrams Figure 9-1.A1 Interconnect PCA contFigure 9-2.A2 Current Amplifier PCA 5725AInstruction Manual 5725A-1650Schematic Diagrams Figure 9-2.A2 Current Amplifier PCA contFigure 9-2.A2 Current Amplifier PCA cont 5725AInstruction Manual Schematic Diagrams Figure 9-2.A2 Current Amplifier PCA contFigure 9-3.A3 High Voltage Amplifier PCA 5725AInstruction Manual 5725A-1661Schematic Diagrams Figure 9-3.A3 High Voltage Amplifier PCA contFigure 9-3.A3 High Voltage Amplifier PCA cont 5725AInstruction Manual aq59f.eps Schematic DiagramsFigure 9-4.A4 Power Supply PCA Figure 9-4.A4 Power Supply PCA cont 5725ASchematic Diagrams Figure 9-4.A4 Power Supply PCA contInstruction Manual AT PINS 12 AND 13 OF U5075725A TYPICAL COMMUNICATIONS ACTIVITYSchematic Diagrams Figure 9-5.A5 Digital PCA contVOLTAGE STANDBY 5725ASTANDBY CURRENT STANDBYSchematic Diagrams Figure 9-6.A6 High Voltage Sense PCA contFigure 9-6.A6 High Voltage Sense PCA cont 5725AInstruction Manual Schematic Diagrams Figure 9-6.A6 High Voltage Sense PCA contFigure 9-6.A6 High Voltage Sense PCA cont 5725AInstruction Manual aq45f.eps Schematic DiagramsFigure 9-7.A12 Transformer Enclosure Assembly 5725A Instruction ManualIndex 5725A Page 5725A Instruction ManualManual Supplement Change #1 rear