Sony Tektronix AWG2021 User manual

Service Manual
AWG2021
Arbitrary Waveform Generator
070-9098-08
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to the Safety Summary prior to
performing service.

Copyright ESony/Tektronix Corporation. All rights reserved.
Copyright ETektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Printed in Japan.
Sony/Tektronix Corporation, P.O.Box 5209, Tokyo Int’l, Tokyo 100–31 Japan
Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year
from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either
will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the
defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.
Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; or c) to service a product that has been
modified or integrated with other products when the effect of such modification or integration increases the time or
difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY
OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX
AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

AWG2021 Service Manual i
Table of Contents
General Safety Summary ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Characteristics 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Conditions 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nominal Traits 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranted Characteristics 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Characteristics 1–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Information
Preparation for Use 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplying Power 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Cord Information 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Environment 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ventilation Requirements 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Controls 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Type and Rating 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applying and Interrupting Power 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-on Cycle 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-off Cycle 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Memory Backup Power 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging Instructions 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installed Options 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Instructions 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to Power On 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal Diagnostics and Calibration Routines 2–9. . . . . . . . . . . . . . . . . . . . . . . . . .
User Interface 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display 2–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menus 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Waveform Files 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Waveform Storage and I/O 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Files 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Output Parameters 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation Mode Settings 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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ii AWG2021 Service Manual
Theory of Operation
Module Overview 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock Synthesizer (A10, Synthesizer Board) 3–1. . . . . . . . . . . . . . . . . . . . . . . .
CH1/CH2 Clock Divider (A21/A31, Control Board) 3–1. . . . . . . . . . . . . . . . . .
Waveform Memory Control (A21, Control Board) 3–1. . . . . . . . . . . . . . . . . . .
Waveform Memory (A21, Control Board) 3–1. . . . . . . . . . . . . . . . . . . . . . . . . .
Digital-to-Analog Converter (DAC) (A21, Control Board) 3–2. . . . . . . . . . . . .
Analog Processing (A3, Analog Board) 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
CPU and Memory (A6, CPU Board) 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIB (A6, CPU Board) 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-232-C (A6, CPU Board) 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Control (A6, CPU Board) 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Monitor 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel (A12, Keyboard) 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floppy Disk Drive 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Voltage Power Supply (A4 Power Board) 3–3. . . . . . . . . . . . . . . . . . . . . .
Fan 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification
Performance Verification Procedures 4–1. . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventions 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self Tests 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostics 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Tests 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prerequisites 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Information 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Check/Adjustment Files 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Mode Checks 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Arithmetic Operation Checks 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock Frequency and Amplitude Checks 4–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain and Offset Accuracy Checks 4–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Response Check 4–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYNC Out and MARKER Out Amplitude Checks 4–40. . . . . . . . . . . . . . . . . . . . . . .
External Trigger Level Accuracy Check 4–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External CLOCK IN Check 4–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ECL Digital Data Out Check (Option 03) 4–47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TTL DIGITAL DATA OUT Check (Option 04) 4–51. . . . . . . . . . . . . . . . . . . . . . . . .
Floating Point Processor Check (Option 09) 4–54. . . . . . . . . . . . . . . . . . . . . . . . . . . .

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AWG2021 Service Manual iii
Adj stment Proced res
Adjustment Procedures 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements for Performance 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before Adjustments 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Providing Access 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Check/Adjustment Files 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
X5 Amplifier HF Compensation 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
Maintenance 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventing ESD 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Care 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation Procedures 6–9. . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Mechanical Parts 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Instructions 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary of Procedures 6–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 6–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AWG2021 Orientation 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Access Procedure 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for External Modules 6–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front-panel Knob 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Fuse and Line Cord 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Cover and Cabinet 6–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EMI Gaskets 6–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Cover, Trim Ring, and Menu Buttons 6–20. . . . . . . . . . . . . . . . . . . . . . . . .
Front-panel Module 6–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedures for Internal Modules 6–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A4 Power Board, A3 Analog Board, and A23 Analog Board
(Option 02) 6–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector Module 6–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan and Fan Frame 6–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Shield Cover 6–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear BNC Connector 6–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Module 6–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Inlet and AUX Power Board 6–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Monitor Module and CRT Frame 6–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Boards 6–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A5 Backplane Board 6–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lithium Battery 6–48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floppy-disk Drive Module 6–49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6–53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
After Repair Adjustment 6–53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Procedures 6–53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AWG2021 Diagnostics 6–53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Diagnostics Tests 6–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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iv AWG2021 Service Manual
Options
Options and Accessories 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options A1–A5 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 02 Description 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 03 Description 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Output 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock Output 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Connector Configuration 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 7–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Circuit and Output Waveform 7–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Suggestions 7–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 04 Description 7–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Output 7–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock Output 7–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Connector Configuration 7–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 7–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Circuit and Output Waveform 7–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Example 7–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Waveform Regeneration 7–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 09 Description 7–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 1R Description 7–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 1S Description 7–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option 95 Description 7–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 7–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Accessories 7–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 7–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Electrical Parts
Electrical Parts List 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagrams
Diagrams 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Mechanical Parts
Replaceable Mechanical Parts 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents
AWG2021 Service Manual v
List of Fig res
Figure 1–1: Timing for the Data and Clock Signals 1–11. . . . . . . . . . . . . . .
Figure 2–1: Rear Panel Controls 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: Display Features 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–3: LOAD Menu 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–4: SETUP Menu 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–5: MODE Menu 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–1: Diagnostics Menu 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: Calibrations Menu 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–3: Cont Mode Initial Test Hookup 4–12. . . . . . . . . . . . . . . . . . . . .
Figure 4–4: Triggered Mode Initial Test Hookup 4–14. . . . . . . . . . . . . . . . .
Figure 4–5: Burst Mode Initial Test Hookup 4–16. . . . . . . . . . . . . . . . . . . .
Figure 4–6: Gated Mode Initial Test Hookup 4–18. . . . . . . . . . . . . . . . . . . .
Figure 4–7: Relationship Between 1 Volt or Greater Gate
Signal and Waveform Output Signal 4–20. . . . . . . . . . . . . . . . . . . . . . .
Figure 4–8: Waveform Advance Mode Initial Test Hookup 4–21. . . . . . . .
Figure 4–9:Autostep Mode Initial Test Hookup 4–23. . . . . . . . . . . . . . . . .
Figure 4–10: External AM Operation Initial Test Hookup 4–26. . . . . . . . .
Figure 4–11: MODE Menu Autostep Setting 4–27. . . . . . . . . . . . . . . . . . . .
Figure 4–12: Clock Frequency Accuracy Initial Test Hookup 4–30. . . . . .
Figure 4–13: Clock Amplitude Initial Test Hookup 4–32. . . . . . . . . . . . . . .
Figure 4–14: Gain Accuracy Initial Test Hookup 4–34. . . . . . . . . . . . . . . . .
Figure 4–15: Pulse Response Initial Test Hookup 4–37. . . . . . . . . . . . . . . .
Figure 4–16: Initial Test Hookup 4–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–17: External Trigger Level Accuracy Initial
Test Hookup 4–42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–18: External CLOCK IN Initial Test Hookup 4–45. . . . . . . . . . .
Figure 4–19: ECL Digital Data Out Initial Test Hookup 4–48. . . . . . . . . .
Figure 4–20: Output Pins on the Termination Board 4–50. . . . . . . . . . . . .
Figure 4–21: TTL Digital Data Out Initial Test Hookup 4–51. . . . . . . . . . .
Figure 4–22: Output Pins on the TTL Digital Data Out Cable 4–53. . . . .
Figure 5–1: Cooling the AWG2021 During Adjustment
Procedures 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–2: Hookup for X5 Amplifier HF Compensation 5–5. . . . . . . . . .
Figure 5–3: C201 Locations for CH1 and CH2 5–7. . . . . . . . . . . . . . . . . .

Table of Contents
vi AWG2021 Service Manual
Figure 5–4: Hookup for Attenuator LF Compensation 5–8. . . . . . . . . . . .
Figure 5–5: PELTOLA Cable with BNC 5–8. . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–6: C301 Location 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–1: AWG2021 Orientation 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–2: Guide to Removal Procedures 6–12. . . . . . . . . . . . . . . . . . . . . .
Figure 6–3: External Modules 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–4: Internal Modules 6–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–5: Front-panel Knob Removal 6–16. . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–6: Line Fuse and Line Cord Removal 6–17. . . . . . . . . . . . . . . . . .
Figure 6–7: Rear Cover and Cabinet Removal 6–19. . . . . . . . . . . . . . . . . .
Figure 6–8: Front Cover, Trim Ring, and Menu Button Removal
(Front Cover not Shown) 6–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–9: Front-panel Module Removal 6–23. . . . . . . . . . . . . . . . . . . . . .
Figure 6–10:A12 Keyboard Removal 6–24. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–11: Disassembly of Front-panel Module 6–25. . . . . . . . . . . . . . . .
Figure 6–12:A4 Power Board Removal 6–27. . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–13:A3/A23 Analog Board Removal 6–29. . . . . . . . . . . . . . . . . . . .
Figure 6–14: Connector Module Removal 6–30. . . . . . . . . . . . . . . . . . . . . .
Figure 6–15: Fan and Fan Frame Removal 6–32. . . . . . . . . . . . . . . . . . . . .
Figure 6–16: Rear Shield Cover Removal 6–33. . . . . . . . . . . . . . . . . . . . . . .
Figure 6–17: Rear BNC Connector Removal 6–35. . . . . . . . . . . . . . . . . . . .
Figure 6–18: Power Supply Module Removal 6–36. . . . . . . . . . . . . . . . . . .
Figure 6–19:AUX Power Board and AC Inlet Removal 6–38. . . . . . . . . . .
Figure 6–20: Monitor Module Removal 6–40. . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–21: CRT Frame Removal 6–41. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–22: Board Removal 6–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–23:A5 Backplane Board Removal 6–47. . . . . . . . . . . . . . . . . . . . .
Figure 6–24: Battery Location on the A5 Backplane Board 6–49. . . . . . . .
Figure 6–25: Floppy-disk Drive Module Removal 6–51. . . . . . . . . . . . . . . .
Figure 6–26:A6 CPU Board 6–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–27: Primary Troubleshooting Procedure 6–55. . . . . . . . . . . . . . .
Figure 6–28: Troubleshooting Procedure 1 —Power
Supply Module 6–56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–29:AUX Power Board 6–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–30: Power Supply Module 6–57. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–31:A10 Synthesizer Board 6–58. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–32:A3/A23 Analog Board 6–58. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–33: Troubleshooting Procedure 2 —A6 CPU Board
or Front-panel Module 6–59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–34: Key Board 6–60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .