Agilent Technologies 81689A Guia do Utilizador

Service GuidePart Number: E3634-90010 Seventh Edition, April 21, 2014 © Copyright Agilent Technologies, Inc. 1998–2014All Rights Reserv

10 CV Load Effect (Load Regulation) - - - - - - - - - - - - - - - - - - - - 52CV Source effect (Line Regulation) - - - - - - - - - - - - - - - - -

Chapter 5 Service Types of Service Available100 Types of Service AvailableIf your power supply fails within 3 years of original purchase, Agilent Te

Chapter 5 Service Repacking for Shipment101 5Repacking for ShipmentFor the Express Exchange Service described on the previous page, return your failed

Chapter 5 Service Electrostatic Discharge (ESD) Precautions102 Electrostatic Discharge (ESD) PrecautionsAlmost all electrical components can be dama

Chapter 5 Service To Disconnect the Output Using an External Relay103 5To Disconnect the Output Using an External RelayWhen the output of the power su

Chapter 5 Service Troubleshooting Hints104 Troubleshooting HintsThis section provides a brief check list of common failures. Before troubleshooting

Chapter 5 Service Troubleshooting Hints105 5Bias Supplies ProblemsCheck that the input to the voltage regulators of the bias supplies is at least 1 V

Chapter 5 Service Self-Test Procedures106 Self-Test ProceduresPower-On Self-TestEach time the power supply is powered on, a set of self-tests are pe

Chapter 5 Service Self-Test Procedures107 5606Rundown gain out of range This test checks the nominal gain between the integrating ADC and the U19 on

Chapter 5 Service Self-Test Procedures108 632Hardware test failed This test checks the status of voltage and current error amplifiers for the powe

6Component Drawings

11 Express Exchange (U.S.A. only) - - - - - - - - - - - - - - - - - - - - - 100Repacking for Shipment - - - - - - - - - - - - - - - - - - - - - - -

110 Component DrawingsThis chapter contains component locator drawings for the power supply. The block diagram is also shown in chapter 4. • E3633-60

Chapter 6 Component Drawings E3633-60002/E3634-60002 Component locator for the main board1116E3633-60002/E3634-60002 Component locator for the main b

Chapter 6 Component Drawings E3633-60003 Component locator for the front panel112 E3633-60003 Component locator for the front panel

Chapter 6 Component Drawings E3633-60019/E3634-60019 Component locator for the main board (serial MY53xx6xxx)1136E3633-60019/E3634-60019 Component lo

Chapter 6 Component Drawings Component locator for the front panel (serial MY53xx6xxx)114 Component locator for the front panel (serial MY53xx6xxx)

Copyright© 1998–2014Agilent TechnologiesAll Rights Reserved.Printing HistorySeventh Edition, April 21, 2014New editions are complete revisions of the

Regulatory MarkingsThe CE marking is a legal compliance marking of the European Community. This CE marking shows that the product complies with all

© Agilent Technologies, Inc. 1998–2014Seventh Edition, April 21, 2014E3634-90010www.agilent.comAgilent TechnologiesContact usTo obtain service, warran

12 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

1Specifications

14 SpecificationsThe performance specifications are listed in the following pages. Specifications are warranted in the temperature range of 0 to 40°C

Chapter 1 Specifications Performance Specifications15 1Performance SpecificationsTable 1-1. Performance Specifications[1]Accuracy specifications are a

Chapter 1 Specifications Performance Specifications16 Transient Response TimeLess than 50 μsec for output to recover to within 15 mV following a cha

Chapter 1 Specifications Supplemental Characteristics17 1Supplemental CharacteristicsTable 1-2. Supplemental CharacteristicsRemote Sensing CapabilityV

Chapter 1 Specifications Supplemental Characteristics18 Output Voltage OvershootDuring turn-on or turn-off of ac power, output plus overshoot will n

Chapter 1 Specifications Supplemental Characteristics19 1Storage Temperature-20 to 70 °C for storage environment.Environmental ConditionsDesigned for

2 The Agilent E3633A and Agilent E3634A are high performance 200 watt single-output dual range programmable DC power supplies with both GPIB and RS-2

Chapter 1 Specifications Supplemental Characteristics20 Figure 8-1. Dimensions of Agilent E3633A and E3634A Power Supplies

2Quick Start

22 Quick StartOne of the first things you will want to do with your power supply is to become acquainted with its front panel. Written procedures in

Chapter 2 Quick Start To Prepare the Power Supply for Use23 2To Prepare the Power Supply for UseThe following steps help you verify that the power sup

Chapter 2 Quick Start To Prepare the Power Supply for Use24 Install the correct fuse and verify that the correct line voltage appears in the window

Chapter 2 Quick Start To Check the Rated Voltages of the Power Supply25 2To Check the Rated Voltages of the Power SupplyThe following procedures check

Chapter 2 Quick Start To Check the Rated Currents of the Power Supply26 To Check the Rated Currents of the Power SupplyThe following procedures chec

Chapter 2 Quick Start To Check the Rated Currents of the Power Supply27 26 Ensure that the current can be adjusted from zero to the maximum rated valu

Chapter 2 Quick Start To Use the Power Supply in Constant Voltage Mode28 To Use the Power Supply in Constant Voltage ModeTo set up the power supply

Chapter 2 Quick Start To Use the Power Supply in Constant Voltage Mode29 2 5 Adjust the knob for the desired output voltage.Check that the Limit annun

3 The Front Panel at a Glance1 8V/20A range selection key (E3633A) 25V/7A range selection key (E3634A)2 20V/10A range selection key (E3633A) 5

Chapter 2 Quick Start To Use the Power Supply in Constant Current Mode30 To Use the Power Supply in Constant Current ModeTo set up the power supply

Chapter 2 Quick Start To Use the Power Supply in Constant Current Mode31 2 5 Adjust the knob for the desired output current.Check that the Limit annun

Chapter 2 Quick Start To Store and Recall the Instrument State32 To Store and Recall the Instrument StateYou can store up to three different operati

Chapter 2 Quick Start To Store and Recall the Instrument State33 24 Save the operating state.The operating state is now stored. To recall the stored s

Chapter 2 Quick Start To Program Overvoltage Protection34 To Program Overvoltage ProtectionOvervoltage protection guards the load against output vol

Chapter 2 Quick Start To Program Overvoltage Protection35 25 Exit the OVP menu.The “CHANGED” message is highlighted for a second to show that the new

Chapter 2 Quick Start To Program Overvoltage Protection36 3 Clear the overvoltage condition and exit this menu.Now, when you press key again, the

Chapter 2 Quick Start To Program Overcurrent Protection37 2To Program Overcurrent ProtectionOvercurrent protection guards the load against output curr

Chapter 2 Quick Start To Program Overcurrent Protection38 5 Exit the OCP menu.The “CHANGED” message is displayed for a second to show that the new O

Chapter 2 Quick Start To Program Overcurrent Protection39 23 Clear the overcurrent condition and exit this menu.Now, when you press key again, the “

4 1 8V/20A* or 25V/7A** range selection key Selects the 8V/20A or 25V/7A range and allows the full rated output to 8V/20A or 25V/7A.2 20V/10A* or 50

Chapter 2 Quick Start To Rack Mount the Power Supply40 To Rack Mount the Power SupplyThe power supply can be mounted in a standard 19-inch rack cabi

Chapter 2 Quick Start To Rack Mount the Power Supply41 2To rack mount two instruments of the same depth side-by-side, order lock-link kit 5061-9694 an

Chapter 2 Quick Start To Rack Mount the Power Supply42 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

3Calibration Procedures

44 Calibration ProceduresThis chapter contains procedures for verification of the power supply’s performance and calibration (adjustment). The chapte

Chapter 3 Calibration Procedures Agilent Technologies Calibration Services45 3Note If you calibrate the power supply over the remote interface, you

Chapter 3 Calibration Procedures Test Considerations46 You can also enter calibration constants from the remote interface. Remote operation is simil

Chapter 3 Calibration Procedures Recommended Test Equipment47 3Recommended Test EquipmentThe test equipment recommended for the performance verificati

Chapter 3 Calibration Procedures Performance Verification Tests48 Performance Verification TestsThe performance verification tests use the power sup

Chapter 3 Calibration Procedures Measurement Techniques49 3Measurement TechniquesSetup for Most TestsMost tests are performed at the front terminals a

5 Front-Panel Voltage and Current Limit SettingsYou can set the voltage and current limit values from the front panel using the following method.1 Sel

Chapter 3 Calibration Procedures Measurement Techniques50 General Measurement TechniquesTo achieve best results when measuring load regulation, peak

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications51 3Constant Voltage (CV) VerificationsConstant Voltage Test SetupIf more than one

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications52 7 Program the output voltage to full rated value (20.0 V)* or (50.0 V)** by s

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications53 3CV Source effect (Line Regulation)This test measures the immediate change in o

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications54 CV PARD (Ripple and Noise)Periodic and random deviations (PARD) in the output

Chapter 3 Calibration Procedures Constant Voltage (CV) Verifications55 3Load Transient Response TimeThis test measures the time for the output voltage

Chapter 3 Calibration Procedures Constant Current (CC) Verifications56 Constant Current (CC) VerificationsConstant Current Test SetupFollow the gene

Chapter 3 Calibration Procedures Constant Current (CC) Verifications57 37 Program the output current to the full rated value (20.0 A)* or (7.0 A)** by

Chapter 3 Calibration Procedures Constant Current (CC) Verifications58 CC Source Effect (Line Regulation)This test measures the immediate change in

Chapter 3 Calibration Procedures Common Mode Current Noise59 33 The output current should be at the full rated rating with the CC annunciator on. If n

6 Display AnnunciatorsAdrs Power supply is addressed to listen or talk over a remote interface.Rmt Power supply is in remote interface mode.8V Shows

Chapter 3 Calibration Procedures Performance Test Record for Agilent E3633A and E3634A60 Performance Test Record for Agilent E3633A and E3634ACV Per

Chapter 3 Calibration Procedures Calibration Security Code61 3Calibration Security CodeThis feature allows you to enter a security code (electronic ke

Chapter 3 Calibration Procedures Calibration Security Code62 To Unsecure the Power Supply for CalibrationThe power supply can use a calibration secu

Chapter 3 Calibration Procedures Calibration Security Code63 34 Unsecure the power supply.The power supply is unsecured when you press (Secure) key.

Chapter 3 Calibration Procedures Calibration Count64 Calibration Count The calibration count feature provides an independent ‘‘serialization’’ of yo

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure65 3General Calibration/Adjustment ProcedureThe calibration procedures from t

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure66 Front Panel Voltage and Current Calibration1 Unsecure the power supply.T

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure67 36 Read the DVM and change the low voltage value on the display to match t

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure68 10 Read the DVM and change the high voltage value on the display to matc

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure69 3If the calibration fails, a ‘‘OVP CAL FAIL’’ message appears for one seco

7 The Rear Panel at a GlanceUse the front-panel key to:• Select the GPIB or RS-232 interface (see chapter 3 in User’s Guide).• Set the GPIB bus addr

Chapter 3 Calibration Procedures General Calibration/Adjustment Procedure70 17 Pressing the ‘‘Calibrate’’ key saves the change and selects the high

Chapter 3 Calibration Procedures Aborting a Calibration in Progress71 320 Pressing the ‘‘Calibrate’’ key saves the new OCP calibration constants and r

Chapter 3 Calibration Procedures Calibration Record for Agilent E3633A/E3634A72 Calibration Record for Agilent E3633A/E3634AStep Calibration Descrip

Chapter 3 Calibration Procedures Error Messages73 3Error MessagesThe following tables are abbreviated lists of error messages for the E3633A and E3634

Chapter 3 Calibration Procedures Error Messages74 Self-Test Error MessagesError Error Messages601 Front panel does not respond602 RAM read/write fai

Chapter 3 Calibration Procedures Error Messages75 3Calibration Error MessagesError Error Messages701 Cal security disabled by jumper702 Cal secured703

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration76 An Example program of Excel 97 for CalibrationThis section contain

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration77 3If DacErrorCorrection = False Then ClosePort Exit Sub

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration78 ActiveCell.Value = "End Middle Current Calibration" S

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration79 3Private Function InitializeDevice() SendSCPI power, "*Cls&q

8 In This BookThis is the Service Guide for your Agilent E3633A and E3634A DC power supplies. Unless otherwise stated, the information in this manual

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration80 Error = viWrite(device, ByVal commandString, Len(commandString), a

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration81 3Private Function DacErrorCorrection() As Boolean Dim Message As

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration82 If bVolt Then 'Send the measured voltage value to the power

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration83 3Declaration for Windows 95/NT 4.0Declare Function viOpenDefaultRM L

Chapter 3 Calibration Procedures An Example program of Excel 97 for Calibration84 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.

4Theory of Operation

86 Theory of OperationThis chapter provides block diagram level descriptions of the power supply. The descriptions provide a basic understanding of c

Chapter 4 Theory of Operation Block Diagram Overview87 4Block Diagram OverviewThis discussion pertains to the block diagram on the next page. The powe

Chapter 4 Theory of Operation Block Diagram Overview88 Block Diagram

Chapter 4 Theory of Operation AC Input and Bias Supplies89 4AC Input and Bias SuppliesThe ac mains are connected by a fused power module. This module

9 ContentsChapter 1 SpecificationsPerformance Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15Supplemental Characteristics-

Chapter 4 Theory of Operation Floating Logic90 Floating LogicThe floating common logic controls operation of the entire instrument. All output funct

Chapter 4 Theory of Operation Floating Logic91 4M bits/second for the DAC system and 93.75 k bits/second for communication with the front panel contr

Chapter 4 Theory of Operation D-to-A Converter92 D-to-A ConverterAll reference voltages of power circuits are derived from the internal voltage refe

Chapter 4 Theory of Operation A-to-D Converter93 4A-to-D ConverterThe analog-to-digital converter (ADC) is used to change dc voltages into digital inf

Chapter 4 Theory of Operation Power Mesh and Control94 Power Mesh and ControlFor the power mesh and control circuit, the preregulator which is contr

Chapter 4 Theory of Operation Power Mesh and Control95 4Two error amplifiers are included in a CV/CC supply, one for controlling output voltage, the o

Chapter 4 Theory of Operation Earth-Referenced Logic96 Earth-Referenced LogicMicroprocessor U1 handles GPIB (IEEE-488) control through bus interface

5Service

98 ServiceThis chapter discusses the procedures involved for returning a failed power supply to Agilent for service or repair. Subjects covered incl

Chapter 5 Service Operating Checklist99 5Operating ChecklistBefore returning your power supply to Agilent for service or repair check the following it