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Agilent Technologies e4419b, e4418b manual Remove this page and replace with pullout.fm, 4-13

Models: e4419b e4418b

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Theory of Operation

A8 Rechargeable Battery Assembly

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Agilent E4418B/E4419B Service Guide

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Agilent Technologies e4419b manual Remove this page and replace with pullout.fm, Agilent E4418B/E4419B Service Guide, 4-13

Contents

Service Guide Agilent Technologies E4418B/E4419B Power MetersPrinted in the UK Agilent E4418B/E4419B Service GuideCopyright 1998, 2003Agilent Technologies Certification WarrantyLegal Information Exclusive Remedies Limitation of WarrantyWarnings and Cautions Personal Safety ConsiderationsEquipment Operation Markings General Safety ConsiderationsUser Environment Installation InstructionsIEC 1010-1 Compliance Statement of ComplianceAgilent E4418B/E4419B Service Guide is available by ordering Option List of Related PublicationsSales and Service Offices United States EuropeLatin America Package the Power Meter for Shipment Returning Your Power Meter for ServiceChapter 6 Troubleshooting About this GuideChapter 1 Specifications Chapter 3 AdjustmentsPage Table of ContentsTest Procedure Test SetupProcedure SpecificationMeasurement Uncertainty Analysis Instrument Accuracy Test1 Measurement Uncertainty Analysis Power Reference Level Test1 Specifications Introduction IntroductionPower Sensors Power Meter SpecificationsMeter Power RangeInstrumentation AccuracyTable 1-1 Zero Set Specifications Power Sensor50 MHz nominal 1 mW Power Reference1Zero Drift of Sensors Power Meter Supplemental CharacteristicsMeasurement Speed Noise Multiplier Measurement NoiseNormal Mode x2 modeMeasurement Noise Zero Driftx2 mode Settling TimeFor Agilent 8480 series power sensors Normal ModeSettling Time s For Agilent E-series power sensorsNormal Mode x2 modeMaximum dBm Normal Modex2 Mode Maximum dBmMeasurement Noise Power Sensor SpecificationsDefinitions Zero Set Zero DriftTypical Operating Time Battery Option 001 Operational CharacteristicsService Life WeightRecorder Outputs General CharacteristicsRear Panel Connectors Line PowerStorage Conditions Environmental CharacteristicsGeneral Conditions Operating EnvironmentGeneral DimensionsWeight SafetyBattery Remote ProgrammingNon-Volatile Memory Command LanguageGeneral Agilent E4418B/E4419B Service GuideSpecifications 1-18Performance Tests Performance Tests IntroductionUser’s Guide Equipment Equipment RequiredCritical Specification Table 2-1 Required EquipmentCalibration Cycle Test ProceduresPerformance Test Record Performance TestsDescription SpecificationTest Setup Zero TestInput Settings ProcedureDescription Test ProcedureInstrument Accuracy Test SpecificationConfirm Test SetupProcedure Figure 2-2 Instrument Accuracy Test SetupWhen switching the range calibrator to STANDBY, allow enough 30 ∝W 3 ∝W10 ∝W Equipment Test ProcedureTest Setup Figure 2-3 Instrument Accuracy Average Path Test Setupchassis of the 11683A option H01 range calibrator unless Procedurethe power meter is connected There is a small risk of mild electrical shock from theInput Settings , More Table 2-4 Instrument Accuracy Results Electrical Power Reference Level TestCharacteristics DescriptionEquation 2-4 Power Level Provided By The Reference Oscillator Power Test SetupProcedure Figure 2-4 Power Reference Level Test Setup0.999 mW Press , Power Ref OnTable 2-5 Power Reference Level Test Result Actual ResultAgilent E-Series Power Sensor Interface Test Agilent E-Series Power Sensor Interface TestProcedure Description Agilent E-Series Power Sensor Functional TestProcedure Figure 2-5 Sensor Functional Test SetupFigure 2-6 Sensor Functional Test Setup with Attenuator Table 2-6 Functional Test Result Performance Test Record Performance Test Record1. This test is not channel related Adjustments covers removed. Maintenance should be performed only by Safety ConsiderationsAdjustments described in this chapter are performed with power applied to the instrument and with protectiveRelated Adjustments, Performance Post-Repair AdjustmentsTable 3-1 Post Repair Adjustments, Tests, and Checks Assembly ReplacedDescription Power Reference Oscillator Frequency AdjustmentProcedure Figure 3-1 Adjustment SetupFigure 3-2 A2L9 Adjustment Location Description Power Reference Oscillator Level AdjustmentPower Reference Oscillator Level Adjustment Vcomp + INPUTINPUT Thermistor MountEquipment ProcedureZero Cal Power Ref OnFigure 3-4 A2R90 Adjustment Location Measurement UncertaintyService Display Brightness and Contrast AdjustmentIntroduction Procedure3-12 Agilent E4418B/E4419B Service GuideAdjustments Display Brightness and Contrast AdjustmentTheory of Operation Introduction IntroductionTheory of Operation A1 Power Supply/Battery Charger A1 Power Supply/Battery ChargerA2 Processor Assembly A2 Processor AssemblyAgilent E4418B/E4419B Service Guide The microcontroller circuits that control all the above functions, and Display A3 Front Panel Assemblypressing System , More , Service , Self Test, Individual A4 Comms Assembly A4 Comms AssemblyA5 Daughter Assembly A5 Daughter AssemblyA6 Measurement Assembly A6 Measurement AssemblyAgilent 8480 series power sensors this is 0 V and -10 V at 217 Hz A8 Rechargeable Battery Assembly A8 Rechargeable Battery Assembly4-13 Agilent E4418B/E4419B Service GuideA8 Rechargeable Battery Assembly Remove this page and replace with pullout.fmTheory of Operation Agilent E4418B/E4419B Service GuideA8 Rechargeable Battery Assembly 4-14Replaceable Parts Replaceable Parts IntroductionAgilent Part Assembly Part NumbersReference DescriptionDesignator ReferenceDescription Agilent PartPower Supply Assembly Types Front Panel Connector Repair Front Panel Connector RepairDownloading Firmware Firmware UpgradesRemoving the Power Meter Cover Assembly and Disassembly GuidelinesRemoving the A1 Power Supply Assembly n n n Removing the A2 Processor Assemblyscrews Removing the A4 Comms AssemblyRemoving the A5 Daughter or A6 Measurement Assemblies Agilent E4418B/E4419B Service Guide Removing the A7 Fan Assembly1. Remove the A1 power supply assembly as shown on page 2. Remove the pins which attach the fan to the chassisbattery terminals or to excessive heat Removing the Power Meter RAM Battery BT1This power meter uses a lithium battery which may explode if Removing the A3 Front Panel Assembly Front panel sensor retaining clip recess Replacing the Front Panel Power Sensor Cable AssembliesReplaceable Parts Agilent E4418B/E4419B Service GuideAssembly and Disassembly Guidelines 5-17Replacing the Front Panel Power Reference Cable Assembly Rear panel sensor retaining clip recess Replaceable Parts Agilent E4418B/E4419B Service GuideAssembly and Disassembly Guidelines 5-20Replacing the Rear Panel Power Reference Cable Assembly Option Replacing the Rear Panel Recorder Outputs Cable Assembly Replacing The Chassis Assembly Replaceable Parts Agilent E4418B/E4419B Service GuideAssembly and Disassembly Guidelines 5-24Troubleshooting Introduction Suggested Diagnostic EquipmentTroubleshooting Self Test Errors? TroubleshootingStart Power Up meter POST Pass? Connect Sensor to Channel A Any Sensor Errors?TTL Output On, Fail O/P Low TroubleshootingPreset/local Confirm Meas/Setup Limits Limits On TTL Output IntroductionSelf Test Errors? TroubleshootingStart Power Up meter POST Pass? Connect Sensor to Channel A Any Sensor Errors?Introduction Agilent E4418B/E4419B Service GuideTroubleshooting Errors? TroubleshootingStart Power Up meter POST Any Sensor Errors?YesDual Agilent E4418B/E4419B Service GuideTroubleshooting IntroductionIntroduction Agilent E4418B/E4419B Service GuideTroubleshooting Start TroubleshootingIntroduction All/OtherMeasurement Uncertainty Analysis Instrument Accuracy Test Appendix APower Meter Measurement IntroductionDefine the Measurement Equation UncertaintiesDefine the Measurand u2MA = CTSE ⋅ uTSE 2 + CMV ⋅ u MV Uncertainty EquationConversion to Linear Units Power LevelStandard Uncertainty uxi Standard Deviation ofVoltage Error Worst case error on 0.1V rangeVoltage Error Worst case error on 1V rangeDistribution Worst case error on 15.8V maximum power settingVoltage Error Power mWSensitivity Coefficients Ci Expanded Uncertainty kucy Combined Standard Uncertainty ucyMeasurement Introduction Agilent E4416A/E4417A Service GuideA-10 Measurement Uncertainty Analysis - Instrument Accuracy TestMeasurement Uncertainty Analysis - Power Reference Level Test Measurement Uncertainty Analysis - Power Reference Level TestAppendix B Pmeas = Measurement IntroductionDefine the Measurand Define the Measurement EquationPmeas = fVcomp,V1,V0,R,CF,Ms Figure B-1 Measurement Setup1 j = ∑i + Uncertainty EquationVoltage Measurements Uncertainty MsUncertainty = 1 ⁄ 1±2PsPdUncertainty Mismatch= ±49.25uV Voltage measurement1.05 + VSWRVSWR + u Ms = ---------------------------------------------------- = Calibration factorSensor Calibration Factor Drift 200 ⋅ 10 + 5 + 3 1000 ⋅ 0.5 + ResistanceRepeatability 10ppm of reading + 0.5ppm of rangeREF. LEVEL TEST ADJUST REFTable B-1 Measurement Repeatability Results MeasurementSensitivity Coefficients Ci I mW Power Measured = fVcomp, V1, V0, R, CF, Ms1.224 ⋅ Using the above values givesCombined Standard Uncertainty ucy Expanded UncertaintyIndex Page Page Index-4 Agilent E4418B/E4419B Service Guide