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Fluke 5725A instruction manual viii, Instruction Manual

Models: 5725A

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5725A

Instruction Manual

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Fluke 5725A instruction manual viii, Instruction Manual

Contents

Instruction Manual 5725AAmplifier Page Table of Contents 5725A Theory of OperationCalibration and Verification 5725A Instruction ManualTable List of TablesTitle 5725A Figure List of FiguresTitle viii 5725AInstruction Manual Declaration of the Manufacturer or Importer Interference InformationBescheinigung des Herstellers/Importeurs 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 UncertaintyInstruction Manual 5725AAC Voltage Specifications Introduction and SpecificationsAC Voltage continued AC Voltage continued 5725AInstruction Manual Voltage RangeTwo-WireAdder active compensation Note Lead Introduction and SpecificationsSpecifications Resistance Nominal ValueFour-Wire Two-WireCompFour-Wire 5725A Instruction ManualSpecifications Introduction and SpecificationsDC Current Instruction Manual 5725AAC Current Specifications Introduction and SpecificationsAC Current continued 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 ManualInstallation Unpacking and InspectionIntroduction 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 3-103-11 Current OperateConditions That Activate the 5725A 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 Introduction5725A Figure 4-1.5725A Overall Block DiagramInstruction Manual 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-DetectCircuitryInstruction Manual 5725Aaq20f.eps 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 4-41Detailed Circuit Description Theory of Operationaq22f.eps 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 4-54Detailed Circuit Description Theory of Operationaq21f.eps 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 ManualIntroduction Where to Find Further InformationCalibration and Verification 5725A Instruction ManualMaintenance Chapter5725A Instruction ManualReplacing the Fuse IntroductionCleaning the Air Filter Cleaning PCA’s General CleaningGeneral Cleaning 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 6-106-11 Accessing the High Voltage Amplifier A3Figure 6-6.Correct Way to Dress Cables 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 ManualSelf Diagnostics 5725A Fault CodesIntroduction 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 Operate7-10 Testing the Power Supply By ItselfTesting the Power Supply By Itself 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 Parts5725A Figure 8-1.Final Assemblyaq24f.tif List of Replaceable Parts Figure 8-1.Final Assembly contaq25f.tif Instruction Manual Figure 8-1.Final Assembly cont5725A aq26f.tifList of Replaceable Parts Figure 8-1.Final Assembly contaq27f.tif Instruction Manual Figure 8-1.Final Assembly cont5725A aq28f.tifList of Replaceable Parts Figure 8-1.Final Assembly contaq29f.tif Instruction Manual Figure 8-1.Final Assembly cont5725A aq30f.tifList of Replaceable Parts Figure 8-1.Final Assembly contaq31f.tif 5725A Table 8-2.A1 Interconnect PCAFigure 8-2.A1 Interconnect PCA List of Replaceable Parts5725A-1611 aq36f.epsInstruction Manual 5725ATable 8-3.A2 Current Amplifier PCA 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.epsInstruction Manual 5725ATable 8-4.A3 High Voltage Amplifier PCA Table 8-4.A3 High Voltage Amplifier PCA cont List of Replaceable PartsDesignator 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.eps5725A Table 8-5.A4 Power Supply PCAInstruction Manual 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.epsInstruction Manual 5725ATable 8-6.A5 Digital PCA 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.eps5725A Table 8-8.A12 Transformer Enclosure AssemblyInstruction Manual List of Replaceable Parts Figure 8-8.A12 Transformer Enclosure Assemblyaq32f.tif 5725A aq33f.tifList of Replaceable Parts aq34f.tifInstruction Manual 5725Aaq35f.tif 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.epsInstruction Manual 5725AFigure 9-1.A1 Interconnect PCA cont 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 contInstruction Manual 5725AFigure 9-2.A2 Current Amplifier PCA cont 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 contInstruction Manual 5725AFigure 9-3.A3 High Voltage Amplifier PCA cont Figure 9-4.A4 Power Supply PCA Schematic Diagramsaq59f.eps 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 contInstruction Manual 5725AFigure 9-6.A6 High Voltage Sense PCA cont Schematic Diagrams Figure 9-6.A6 High Voltage Sense PCA contInstruction Manual 5725AFigure 9-6.A6 High Voltage Sense PCA cont Figure 9-7.A12 Transformer Enclosure Assembly Schematic Diagramsaq45f.eps 5725A Instruction ManualIndex 5725A Page 5725A Instruction ManualManual Supplement Change #1 rear