Fluke 5220A User Manual

®5220ATransconductance AmplifierInstruction ManualPN 491936June 1979 Rev. 3, 6/97© 1997 Fluke Corporation. All rights reserved. Printed in USAAll pro

5220AInstruction Manualviii6-1. Rack Mounting Kit ... 6-2

5 220AInstruction Manual5-28Table 5-8. A7 Output PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityH1 Screw, Machine, PH, P, Steel,

List of Replaceable PartsService Centers55-29ajs42f.wmfFigure 5-8. A7 Output PCB Assembly

5 220AInstruction Manual5-30ajs43f.wmfFigure 5-8. A7 Output PCB Assembly (cont.)

List of Replaceable PartsService Centers55-31Table 5-9. A8 Analog Control PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC1 Capa

5 220AInstruction Manual5-32ajs44f.wmfFigure 5-9. A8 Analog Control PCB Assembly

List of Replaceable PartsService Centers55-33Table 5-10. A9 Front Panel PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC1 Capaci

5 220AInstruction Manual5-34Table 5-11. A10 Logic PCB AssemblyReference Designator DescriptionFlukePart No.TotalQuantityC1, C3, C4Capacitor, Mica, 100

List of Replaceable PartsService Centers55-35ajs30f.wmfFigure 5-11. A10 Logic PCB Assembly

5 220AInstruction Manual5-36Table 5-12. A11 MIS Bus Interface PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC1 Capacitor, TA, 4

List of Replaceable PartsService Centers55-37ajs31f.wmfFigure 5-12. A11 MIS Bus PCB Assembly

Contents (continued)ix

5 220AInstruction Manual5-38NoteThe A12 shunt assembly is a suggested non-repairable assembly.Table 5-13. A12 Shunt AssemblyReferenceDesignator Descri

List of Replaceable PartsService Centers55-39ajs32f.wmfFigure 5-13. A12 Shunt Assembly

5 220AInstruction Manual5-40Table 5-14. A13 Output Termination PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC1 Capacitor, CER,

List of Replaceable PartsService Centers55-41Table 5-15. A14 Extender PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityH1 Screw, M

5 220AInstruction Manual5-42

6-1Section 6Option and Accessory Information6-1. IntroductionThis section of the manual documents the options and accessories available for use withth

5 220AInstruction Manual6-2ajs45f.wmfFigure 6-1. Rack Mounting Kit

Option and Accessory InformationAccessories66-36-4. Rack Slide Kit (M00-280-610)The 5220A can be rack mounted in a 24-inch deep equipment rack using

5 220AInstruction Manual6-4ajs46f.wmfFigure 6-2. Rack Slide Kit

7-1Chapter 7Schematic Diagrams

5220AInstruction Manualxajs36f.eps5220A Transconductance Amplifier

5220AInstruction Manual7-25220A-1001 (Sheet 1 of 2)ajs47f.wmfFigure 7-1. Interconnect Diagram

Schematic Diagrams77-3ajs48f.wmFigure 7-1. Interconnect Diagram (cont.)

5220AInstruction Manual7-4ajs49f.wmfFigure 7-2. Chassis Wiring

Schematic Diagrams77-5ajs50f.wmfFigure 7-2. Chassis Wiring (cont.)

5220AInstruction Manual7-6ajs51f.wmfFigure 7-3. Power Supply

Schematic Diagrams77-7ajs52f.wmfFigure 7-3. Power Supply (cont.)

5220AInstruction Manual7-8ajs53f.wmfFigure 7-4. A5 Preamplifier PCB Assembly

Schematic Diagrams77-9ajs54f.wmfFigure 7-4. A5 Preamplifier PCB Assembly (cont.)

5220AInstruction Manual7-10ajs55f.wmfFigure 7-5. A6 Driver and A7 Output PCB Assemblies

Schematic Diagrams77-11ajs56f.wmfFigure 7-5. A6 Driver and A7 OutputPCB Assemblies (cont.)

1-1Section 1Introduction and Specifications1-1. IntroductionThe Model 5220A is a transconductance amplifier designed to operate as either a standalone

5220AInstruction Manual7-12ajs57f.wmfFigure 7-6. A8 Analog Control PCB Assembly

Schematic Diagrams77-13ajs58f.wmfFigure 7-6. A8 Analog Control PCB Assembly (cont.)

5220AInstruction Manual7-14ajs59f.wmfFigure 7-7. A9 Front Panel PCB Assembly

Schematic Diagrams77-15ajs60f.wmfFigure 7-7. A9 Front Panel PCB Assembly (cont.)

5220AInstruction Manual7-16ajs61f.wmfFigure 7-8. A10 Logic PCB Assembly

Schematic Diagrams77-17ajs62f.wmfFigure 7-8. A10 Logic PCB Assembly (cont.)

5220AInstruction Manual7-18ajs63f.wmfFigure 7-9. A11 MIS Bus Interface PCB Assembly

Schematic Diagrams77-19ajs64f.wmfFigure 7-9. A11 MIS Bus InterfacePCB Assembly (cont.)

5220AInstruction Manual7-20

5 220AInstruction Manual1-2selection switches are inside the 5220A. Refer to Section 4 of this manual for informationon how to properly set the line p

Introduction and SpecificationsSpecifications11-3Table 1-2. Specifications (cont.)Electromagnetic Compatibility This instrument is designed to operate

5 220AInstruction Manual1-4Table 1-2. Specifications (cont.)GeneralLoad Capability Drives all resistive and capacitive loads consistent with current a

Introduction and SpecificationsSpecifications11-5ajs01f.wmfFigure1-1. Outline Drawings

5 220AInstruction Manual1-6

2-1Section 2Operating Instructions2-1. IntroductionThis section of the manual contains information concerning the installation and operationof the Mod

LIMITED WARRANTY AND LIMITATION OF LIABILITYEach Fluke product is warranted to be free from defects in material and workmanship undernormal use and se

5 220AInstruction Manual2-22-4. Fuse Replacement2-5. AC Line FuseThe ac line fuse is accessible by way of a rear-panel fuse holder located to the lef

Operating InstructionsOperating Features22-3ajs02f.wmfFigure 2-1. Controls, Indicators, and Connectors

5 220AInstruction Manual2-4Table 2-1. Controls, Indicators, and ConnectorsRef.No Name Function1 STATUS Indicators Three LEDs that light on an individ

Operating InstructionsOperating Notes22-5Table 2-1. Controls, Indicators, and Connectors (cont.)Ref.No Name Function8 Power Connector Provides the me

5 220AInstruction Manual2-62-13. Input Voltage Selection, Front/RearSelection of the front or rear terminals for control voltage input is manually ac

Operating InstructionsOperating Notes22-7connected to the output before the condition can be cleared. Overcompliance is detectedas an output voltage o

5 220AInstruction Manual2-8ajs03f.wmfFigure 2-2. Maximum Load Inductance vs Frequency

Operating InstructionsOperation22-9ajs04f.wmfFigure 2-3. Typical Transconductance Error for Inductive Loads2-20. OperationThe following procedure is s

5220AInstruction Manual2-107. Determine the active output terminals (front or rear) by connecting a short jumperwire between the front-panel CURRENT

3-1Section 3Theory of Operation3-1. IntroductionThis section of the manual contains an overall functional description followed by adetailed circuit an

iTable of ContentsSection Title Page1 Introduction and Specifications... 1-11-1. Introduction ...

5 220AInstruction Manual3-2ajs05f.wmfFigure 3-1. 5220A Functional Block Diagram

Theory of OperationOverall Functional Description33-3The transconductance amplifier is a three-stage, closed-loop amplifier whose feedbacksignal is pr

5 220AInstruction Manual3-43-5. Digital SectionThe logic portion of the 5220A controls the sequencing of input relays (front/rear) andother control s

Theory of OperationCircuit Analysis33-5The A4 Regulator is designed to convert the ac outputs from the three remainingsecondary windings of T1 into th

5 220AInstruction Manual3-63-8. PreamplifierThe A5 Preamplifier, as shown in Figure 3-4, is a high-gain amplifier designed to accepta front/rear panel

Theory of OperationCircuit Analysis33-7the rate at which the input voltage is applied to the A5 Preamplifier when the 5220A isswitched from standby to

5 220AInstruction Manual3-8string is used as a voltage source to set the quiescent bias for the remaining stages of thecomplementary A7 Driver and A7

Theory of OperationCircuit Analysis33-93-10. A7 OutputThe A7 Output is a discrete-component, complementary-output, high-current amplifierwhich serves

5 220AInstruction Manual3-103-11. A8 Analog ControlThe A8 Analog Control Assembly, as shown in Figure 3-7, contains an overcompliancedetector, an ove

Theory of OperationCircuit Analysis33-11it were a logic level. That is, voltages from 0 to an approximate 2 V threshold areconsidered a low logic leve

5220AInstruction Manualii3-8. Preamplifier... 3-63-9. A6 Driver ...

5 220AInstruction Manual3-12ajs13f.wmfFigure 3-8. A10 Logic Simplified Block DiagramLoss or interruption of the +15/-15 V dc supply output causes the

Theory of OperationCircuit Analysis33-13input is present. Under normal operating condition the reset command is high at U9-10and low at U3-10.When the

5 220AInstruction Manual3-14The shift-right mode is selected when flop-flop U17-1 responds to an operate command(D-input low) and drives the register’

Theory of OperationCircuit Analysis33-15indicates standby, high indicates operate. The not Operate signal is received from theA11 MIS Bus Interface an

5 220AInstruction Manual3-163-19. Failure Status LogicThe failure status logic consists of three D-type flip-flop (U16-1, U16-13, and U17-13)and thei

Theory of OperationCircuit Analysis33-17enabled so that a status read can take place when BC0 and BC2 go high. Status readcauses the w/not R line to g

5 220AInstruction Manual3-18

4-1Section 4Maintenance4-1. IntroductionWWarningThese servicing instructions are for use by qualified personnelonly. To avoid electric shock, do not p

5 220AInstruction Manual4-24-2. Service InformationThe 5220A is warranted for a period of 1-year upon delivery to the original purchaser.The warranty

MaintenanceGeneral Maintenance44-3ajs15f.wmfFigure 4-1. Internal Component/Assembly LocationsCautionTo prevent component damage observe static awarene

Contents (continued)iii4-40. Resistor R13... 4-174-41. Troubleshooti

5 220AInstruction Manual4-44-7. Internal Components/AssembliesAll internal switches, fuses, and calibration adjustments can be accessed by removing th

MaintenanceGeneral Maintenance44-54-11. A6 Driver and A7 Output Assembly RemovalThe A6 Driver and A7 Output PCB Assemblies comprise a plug-in assembl

5 220AInstruction Manual4-64-14. Fuse Replacement4-15. Ac Line FuseThe ac line fuse is accessible by way of a rear-panel fuse holder located to the l

MaintenanceGeneral Maintenance44-7ajs16f.wmfFigure 4-2. Line Voltage Selection4-18. Output Terminal Selection, Front/RearEither the front or rear out

5 220AInstruction Manual4-8CautionTo ensure proper instrument operation make sure that bothscrews are installed and that they are both in either the F

MaintenancePerformance Test44-94-22. Front Panel TestsUse the following procedure to check the operation of the 5220A front-panel controls andLEDs:1.

5 220AInstruction Manual4-104-24. DC Accuracy and Line RegulationThe following procedure is used to check the dc accuracy of the 5220A output current

MaintenancePerformance Test44-117. Set the 5220A to the standby mode.8. Disconnect the load resistor and the distortion analyzer from the 5220A outp

5 220AInstruction Manual4-124. Increase the ac voltage calibrator output in 1.0V rms increments. The 5220A shouldswitch to the standby mode at betwee

MaintenanceCalibration Adjustments44-134-30. Initial ConditionsBefore starting the following procedures, condition the 5220A as follows:1. Disconnec

5220AInstruction Manualiv

5 220AInstruction Manual4-144-33. Output Bias AdjustmentThis procedure is used to adjust the bias current for both the A6 Driver and the A7Output. Th

MaintenanceReplacement of Selected Components44-158. Set the 5220A to the standby mode.9. Disconnect the shunt and voltmeter from the 5220A output t

5 220AInstruction Manual4-164-39. Resistors R11 and R12Resistors R11 and R12 are associated with the Input Offset Adjustment procedure and thesetting

MaintenanceReplacement of Selected Components44-17Table 4-4. Replacement Resistors for R11 and R12DVM Reading (±mV dc) Selected Value for R11/R12 Fluk

5 220AInstruction Manual4-18Table 4-5. Replacement Resistors for R13Corrected DVM Indication (mV dc) Selected Value for R13 (Ω) Fluke Part Number102.0

MaintenanceTroubleshooting44-19ajs17f.wmfFigure 4-3. Test Point Location/Identification

5 220AInstruction Manual4-20ajs18f.wmfFigure 4-4. Flowchart Summary of Mainframe and Digital SectionTroubleshooting Guide

MaintenanceTroubleshooting44-21Table 4-6. Mainframe and Digital Section Troubleshooting GuideStep Instruction Yes No Go to1 Set the 5220A POWER switc

5 220AInstruction Manual4-22Table 4-6. Mainframe and Digital Section Troubleshooting Guide (cont.)Step Instruction Yes No Go to15 Check the line volt

MaintenanceTroubleshooting44-23Table 4-6. Mainframe and Digital Section Troubleshooting Guide (cont.)Step Instruction Yes No Go to33 The mainframe an

vList of TablesTable Title Page1-1. Accessories...

5 220AInstruction Manual4-24ajs19f.wmfFigure 4-5. Flowchart Summary of Analog Section Troubleshooting Guide

MaintenanceTroubleshooting44-25Table 4-7. Analog Section Troubleshooting GuideStep Instruction Yes No Go to1 Complete the troubleshooting procedure g

5 220AInstruction Manual4-26Table 4-7. Analog Section Troubleshooting Guide (cont.)Step Instruction Yes No Go to19 Set the 5220A to the operate mode

5-1Section 5List of Replaceable Parts5-1. IntroductionThis section contains an illustrated list of replaceable parts for 5220A. Parts are listed byass

5 220AInstruction Manual5-2• Fluke stock number• Description (as given under the Description heading)• Quantity• Instrument Model, Serial Number,

List of Replaceable PartsService Centers55-3A11 MIS Bus Interface PCBAssembly491266 CA13 Output Termination PCBAssembly491274 B

5 220AInstruction Manual5-4Table 5-1. 5220A Final AssemblyReferenceDesignator DescriptionFluke PartNo.TotalQuantityA1 h Motherboard PCB Assembly 49120

List of Replaceable PartsService Centers55-5Table 5-1. 5220A Final Assembly (cont.)ReferenceDesignator DescriptionFluke PartNo.TotalQuantityH11 Washer

5 220AInstruction Manual5-6Table 5-1. 5220A Final Assembly (cont.)ReferenceDesignator DescriptionFluke PartNo.TotalQuantityMP18 Output Bus, Plus- Aft

List of Replaceable PartsService Centers55-7Table 5-1. 5220A Final Assembly (cont.)ReferenceDesignator DescriptionFluke PartNo.TotalQuantityMP50 Foot,

5220AInstruction Manualvi

5 220AInstruction Manual5-8ajs20f.wmfFigure 5-1. 5220A Final Assembly

List of Replaceable PartsService Centers55-9ajs21f.wmfFigure 5-1. 5220A Final Assembly (cont.)

5 220AInstruction Manual5-10ajs22f.wmfFigure 5-1. 5220A Final Assembly (cont.)

List of Replaceable PartsService Centers55-11ajs23f.wmfFigure 5-1. 5220A Final Assembly (cont.)

5 220AInstruction Manual5-12ajs24f.wmfFigure 5-1. 5220A Final Assembly (cont.)

List of Replaceable PartsService Centers55-13ajs25f.wmfFigure 5-1. 5220A Final Assembly (cont.)

5 220AInstruction Manual5-14ajs26f.wmfFigure 5-1. 5220A Final Assembly (cont.)

List of Replaceable PartsService Centers55-15ajs27f.wmfFigure 5-1. 5220A Final Assembly (cont.)

5 220AInstruction Manual5-16ajs28f.wmfFigure 5-1. 5220A Final Assembly (cont.)

List of Replaceable PartsService Centers55-17Table 5-2. A1 Motherboard PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityJ10, J20,

viiList of FiguresFigure Title Page5220A Transconductance Amplifier... x1-1. Outlin

5 220AInstruction Manual5-18Table 5-3. A2 Power Transformer AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityF4 – F7 Fuse, 0.25 x 1.25

List of Replaceable PartsService Centers55-19Table 5-4. A3 Capacitor Bus PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC1 – C8

5 220AInstruction Manual5-20ajs38f.wmfFigure 5-4. A3 Capacitor Bus PCB Assembly

List of Replaceable PartsService Centers55-21Table 5-5. A4 Regulator PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC9, C10, C16

5 220AInstruction Manual5-22ajs39f.wmfFigure 5-5. A4 Regulator PCB Assembly

List of Replaceable PartsService Centers55-23Table 5-6. A5 Preamplifier PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC1, C2 Ca

5 220AInstruction Manual5-24Table 5-6. A5 Preamplifier PCB Assembly (cont.)ReferenceDesignator DescriptionFlukePart No.TotalQuantityR19 Resistor, MF,

List of Replaceable PartsService Centers55-25ajs40f.wmfFigure 5-6. A5 Preamplifier PCB Assembly

5 220AInstruction Manual5-26Table 5-7. A6 Driver PCB AssemblyReferenceDesignator DescriptionFlukePart No.TotalQuantityC1 Capacitor, Polyester, 0.027 µ

List of Replaceable PartsService Centers55-27Table 5-7. A6 Driver PCB Assembly (cont.)ReferenceDesignator DescriptionFlukePart No.TotalQuantityR28, R2