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Service Guide
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 Flexible system features
Convenient bench-top features
Agilent E3633A and E3634A DC Power Supplies
 The Front Panel at a Glance
 For Agilent E3633A Model **For Agilent E3634A Model
 Front-Panel Voltage and Current Limit Settings
 Display Annunciators
 The Rear Panel at a Glance
Use the front-panel I/OConfig key to
 In This Book
Page
 Contents
Contents
 Contents Chapter 3 Calibration Procedures Continued
Chapter 4 Theory of Operation
 Chapter 7 Backdating Chapter 8 Schematics
Contents Chapter 5 Service
Chapter 6 Replaceable Parts
 Contents
 Specifications
 Specifications
 Performance Specifications
Chapter 1 Specifications
Performance Specifications
Table 1-1. Performance Specifications
 Chapter 1 Specifications Performance Specifications
 Supplemental Characteristics
Chapter 1 Specifications Supplemental Characteristics
Remote Sensing Capability
Temperature Coefficient, ±% of output + offset
 SCPI Standard Commands for Programmable Instruments
 20 to 70 C for storage environment
 Chapter 1 Specifications Supplemental Characteristics
 Quick Start
 Quick Start
Local
 To Prepare the Power Supply for Use
Chapter 2 Quick Start To Prepare the Power Supply for Use
3 Connect the power cord and turn on the power supply
4 Enable the outputs
 100 or 115 Vac, 6.3 AT fuse 230 Vac, 3.15 AT fuse
 To Check the Rated Voltages of the Power Supply
Chapter 2 Quick Start To Check the Rated Voltages of the Power Supply
1 Turn on the power supply
2 Enable the outputs
 To Check the Rated Currents of the Power Supply
Output On/Off Display Limit Voltage Current
 page 123 in chapter 5 of the User’s Guide
 To Use the Power Supply in Constant Voltage Mode
 Current Display Limit Output On/Off
1 Voltage
 To Use the Power Supply in Constant Current Mode
Display Limit
 Check that the Limit annunciator still flashes. Set the knob for current control. The second digit of the ammeter will be flashing. Change the flashing digit using the resolution selection keys and adjust the knob to the desired output current
 1 Set up the power supply for the desired operating state
To Store and Recall the Instrument State
STORE
Chapter 2 Quick Start To Store and Recall the Instrument State
 RECALL
DONE
Memory location “1” will be displayed in the recall mode
 Setting the OVP Level and Enable the OVP Circuit
To Program Overvoltage Protection
LEVEL 22.0V E3633A LEVEL 55.0V E3634A
OVP ON
 Checking OVP Operation
Clearing the Overvoltage Condition
CHANGED
OVP CLEAR
 Adjust OVP trip level
 Setting the OCP Level and Enable the OCP Circuit
To Program Overcurrent Protection
LEVEL 22.0 A E3633A LEVEL 7.5 A E3634A
OCP ON
 Clearing the Overcurrent Condition
Checking OCP Operation
OCP CLEAR
 Adjust OCP trip level
 To Rack Mount the Power Supply
To Rack Mount the Power Supply
To remove the rubber bumper, stretch a corner and then slide it off
To rack mount a single instrument, order adapter kit
 To Rack Mount the Power Supply
 Chapter 2 Quick Start To Rack Mount the Power Supply
 Calibration Procedures
 Calibration Procedures
 Agilent Technologies Calibration Services
Calibration Interval
 Automating Calibration Procedures
Chapter 3 Calibration Procedures Automating Calibration Procedures
Test Considerations
C a u t i o n
 Recommended Test Equipment
Chapter 3 Calibration Procedures Recommended Test Equipment
Table 3-1. Recommended Test Equipment
 Self-Test
Performance Verification Tests
Performance Verification Tests
 Measurement Techniques
Setup for Most Tests
Electronic Load
 Current-Monitoring Resistor
General Measurement Techniques
Programming
 Constant Voltage CV Verifications
Constant Voltage Test Setup
Voltage Programming and Readback Accuracy
 CV Load Effect Load Regulation
 CV Source effect Line Regulation
 CV PARD Ripple and Noise
 Load Transient Response Time
 Constant Current CC Verifications
Constant Current Test Setup
Current Programming and Readback Accuracy
 CC Load Effect Load Regulation
 CC Source Effect Line Regulation
CC PARD Ripple and Noise
 Chapter 3 Calibration Procedures Common Mode Current Noise
Common Mode Current Noise
 Performance Test Record for Agilent E3633A and E3634A
CV Performance Test Record
CC Performance Test Record
Performance Test Record for Agilent E3633A and E3634A
 See the procedure on page
Chapter 3 Calibration Procedures Calibration Security Code
Calibration Security Code
 To Unsecure the Power Supply for Calibration
SECURED
000000 CODE
003633 CODE E3633A 003634 CODE E3634A
 To Unsecure the Power Supply Without the Security Code
UNSECURED
 Chapter 3 Calibration Procedures Calibration Count
Calibration Count
Calibration Message
CALSECSTAT OFFON,code
 General Calibration/Adjustment Procedure
 CAL SETUP
Front Panel Voltage and Current Calibration
30 LEFT
V LO 0.5000
 V LO 0.4500
V MI 10.000 V E3633A
V MI 10.001
V HI 19.500 V E3633A
 V HI 19.495
For example, if the DVM reads 19.495 V, adjust the voltage to 19.495 V using the knob and arrow keys
 I LO 0.500 A E3633A
I LO 0.499 A
I MI 10.000 A E3633A
I MI 9.999 A
 I HI 19.499 A
I HI 19.500 A E3633A
If the entered number is within an acceptable range, an ‘‘ENTERED’’ message appears for one second. If the entered number is not correct, an ‘‘MIN VALUE’’ or ‘‘MAX VALUE’’ message appears for one second and the display shows the middle current calibration point again. The display now shows the high current calibration point
 Aborting a Calibration in Progress
CAL MODE
 Calibration Record for Agilent E3633A/E3634A
Calibration Record for Agilent E3633A/E3634A
 Error Messages
Chapter 3 Calibration Procedures Error Messages
System Error Messages
Self-Test Error Messages
 Calibration Error Messages
 An Example program of Excel 97 for Calibration
An Example program of Excel 97 for Calibration
 Chapter 3 Calibration Procedures
An Example program of Excel 97 for Calibration
 Chapter 3 Calibration Procedures
An Example program of Excel 97 for Calibration
 Chapter 3 Calibration Procedures
An Example program of Excel 97 for Calibration
 Chapter 3 Calibration Procedures
An Example program of Excel 97 for Calibration
 Chapter 3 Calibration Procedures
 End of Program
 Declaration for Windows 95/NT
 Theory of Operation
 Block Diagram Overview, starting on page
 Block Diagram Overview
Chapter 4 Theory of Operation Block Diagram Overview
 Block Diagram
 AC Input and Bias Supplies
Chapter 4 Theory of Operation AC Input and Bias Supplies
 Floating Logic
Chapter 4 Theory of Operation Floating Logic
 U20 Internal Signal
 D-to-A Converter
Chapter 4 Theory of Operation D-to-A Converter
 A-to-D Converter
Chapter 4 Theory of Operation A-to-D Converter
 Power Mesh and Control
Chapter 4 Theory of Operation Power Mesh and Control
 Two error amplifiers are included in a CV/CC supply, one for controlling output voltage, the other for controlling output current. Since the constant voltage amplifier tends to achieve zero output impedance and alters the output current whenever the load resistance changes, while the constant current amplifier causes the output impedance to be infinite and changes the output voltage in response to any load resistance change, it is obvious that the two amplifiers can not operate simultaneously. For any given value of load resistance, the power supply must act either as a constant voltage source or as a constant current source - it can not be both transfer between these two modes is accomplished at a value of load resistance equal to the ratio of the output voltage control setting to the output current control setting
 Front Panel
Earth-Referenced Logic
Chapter 4 Theory of Operation Earth-Referenced Logic
 Service
 Service
 Is the Power Supply Inoperative?
Operating Checklist
Does the Power Supply Fail Self-Test?
 Standard Repair Service worldwide
Types of Service Available
Express Exchange U.S.A. only
 Repacking for Shipment
Chapter 5 Service Repacking for Shipment
Agilent Technologies recommends that you always insure shipments
 Electrostatic Discharge ESD Precautions
To Replace the Power-Line Fuse
Chapter 5 Service Electrostatic Discharge ESD Precautions
Surface Mount Repair
 To Disconnect the Output Using an External Relay
Installation Procedure
 Troubleshooting Hints
Unit Reports Errors 740 to
Unit is Inoperative
Unit Fails Self-Test
 Bias Supplies Problems
 Power-On  Self-Test
Self-Test Procedures
Complete  Self-Test
 ±10% tolerance
 Chapter 5 Service Self-Test Procedures 106
 Replaceable Parts
 To Order Replaceable Parts
Replaceable Parts
Backdating and Part Changes
 E3633/E3634-60002 Main PC Assembly
E3633/E3634-60002 Main PC Assembly
Chapter 6 Replaceable Parts
 E3633/E3634-60002 Main PC Assembly
Chapter 6 Replaceable Parts
 E3633/E3634-60002 Main PC Assembly
Chapter 6 Replaceable Parts
 E3633/E3634-60002 Main PC Assembly
Chapter 6 Replaceable Parts
 E3633/E3634-60002 Main PC Assembly
Chapter 6 Replaceable Parts
 E3633/E3634-60002 Main PC Assembly
Chapter 6 Replaceable Parts
 E3633/E3634-60002 Main PC Assembly
 Designator
 E3633/E3634-60002 Main PC Assembly
 For use with E3634A model only
 E3633-60003 Front-Panel Display PC Assembly
E3633-60003 Front-Panel Display PC Assembly
 E3633A/E3634A Power Supply Assembly
E3633-60011 Front Frame Assembly
E3633-60011 Front Frame Assembly
 Manufacturer’s List
Manufacturer’s List
 Chapter 6 Replaceable Parts Manufacturer’s List 122
 Backdating
 Backdating
 Schematics
 Mechanical Disassembly, on page
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 Copyright 1998 Agilent Technologies All Rights Reserved