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 E Sony/Tektronix Corporation. All rights reserved.
Copyright E T ektronix, Inc. All rights reserved.
T ektronix 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/T ektronix Corporation, P.O.Box 5209, Tokyo Int’l, Tokyo 100–31 Japan
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.
WARRANTY
T ektronix 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, T ektronix, 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 T ektronix, with shipping charges prepaid.
T ektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
T ektronix 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. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than T ektronix 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 CUST OMER 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.
Table of Contents
Specifications
Operating Information
General Safety Summary ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Characteristics 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Conditions 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nominal Traits 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
W arranted Characteristics 1–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ypical Characteristics 1–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation for Use 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplying Power 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Cord Information 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Environment 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating T emperature 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ventilation Requirements 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Panel Controls 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse T ype 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AWG2021 Service Manual
i
Table of Contents
Theory of Operation
Module Overview 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 DIGIT AL DATA OUT Check (Option 04) 4–51. . . . . . . . . . . . . . . . . . . . . . . . .
Floating Point Processor Check (Option 09) 4–54. . . . . . . . . . . . . . . . . . . . . . . . . . . .
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AWG2021 Service Manual
Adjustment Procedures
Maintenance
Table of Contents
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 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A WG2021 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 T ests 6–54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AWG2021 Service Manual
iii
Table of Contents
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
W aveform 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv
AWG2021 Service Manual
List of Figures
Table of Contents
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. . . . .
AWG2021 Service Manual
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. . . . . . . . . . . . . . . . . .
v
Table of Contents
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
AWG2021 Service Manual
Table of Contents
Figure 6–35: Troubleshooting Procedure 3 — Monitor Module 6–61. . . .
Figure 6–36: Monitor Module 6–62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–37: Horizontal and Vertical Sync Signals 6–62. . . . . . . . . . . . . . .
Figure 6–38: A Video Signal with White and Black Levels 6–63. . . . . . . . .
Figure 6–39: Troubleshooting Procedure 4 — Module Isolation 6–64. . . .
Figure 7–1: Option 03 Block Diagram 7–3. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–2: Option 03 Output Connector 7–4. . . . . . . . . . . . . . . . . . . . . . .
Figure 7–3: Generation of Excess Output 7–5. . . . . . . . . . . . . . . . . . . . . . .
Figure 7–4: Output Circuit 7–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–5: Output Waveform 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–6: Data Latching 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–7: Coaxial Cable End Processing 7–8. . . . . . . . . . . . . . . . . . . . . .
Figure 7–8: Cable Examples 7–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–9: Digital Data Latch Example 7–10. . . . . . . . . . . . . . . . . . . . . . .
Figure 7–10: Block Diagram 7–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–11: Option 04 Output Connector 7–12. . . . . . . . . . . . . . . . . . . . . .
Figure 7–12: Generation of Excess Output 7–13. . . . . . . . . . . . . . . . . . . . . .
Figure 7–13: Output Circuit 7–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–14: Output Waveform 7–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–15: Data Latching 7–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–16: Digital Data Out Cable 7–15. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 7–17: Example of Waveform Reproduction Circuit 7–16. . . . . . . .
AWG2021 Service Manual
Figure 9–1: Block Diagram of AWG2021 with Options 02 and 09 9–3. . .
Figure 9–2: Block Diagram of AWG2021 with Options 02 and 03 9–4. . .
Figure 9–3: Block Diagram of AWG2021 with Options 02 and 04 9–5. . .
Figure 9–4: Interconnect Diagram of AWG2021 with
Options 02, 04, and 09 9–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9–5: Interconnect Diagram of AWG2021 Option 03 9–7. . . . . . . .
Figure 10–1: Cabinet 10–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–2: Main Chassis and CRT 10–7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–3: Main Chassis and Circuit Boards 10–9. . . . . . . . . . . . . . . . . .
Figure 10–4: Circuit Boards 10–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–5: Front Panel Assembly 10–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–6: Option 02 10–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–7: Option 03 10–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–8: Option 04 10–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10–9: Option 09 10–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vii
Table of Contents
List of Tables
Table 1–1: Electrical Characteristics 1–4. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–2: Mechanical Characteristics 1–8. . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–3: Electrical Characteristics 1–9. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–4: Environmental Characteristics 1–14. . . . . . . . . . . . . . . . . . . . . .
Table 1–5: Electrical Characteristics 1–15. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–6: Certifications and Compliances 1–15. . . . . . . . . . . . . . . . . . . . .
Table 2–1: Power-Cord Conductor Identification 2–2. . . . . . . . . . . . . . . .
Table 2–2: Power Cord Identification 2–3. . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–3: Fuse Type and Rating 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–1: Test Equipment 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–2: File List for Performance Check/Adjustment Disk 4–10. . . . .
Table 4–3: Clock Frequency Accuracy 4–31. . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–1: Test Equipment 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–2: File List for Performance Check/Adjustment Disk 5–4. . . . .
Table 6–1: Relative Susceptibility to Static-Discharge Damage 6–3. . . . .
Table 6–2: External Inspection Check List 6–5. . . . . . . . . . . . . . . . . . . . .
Table 6–3: Internal Inspection Check List 6–6. . . . . . . . . . . . . . . . . . . . . .
Table 6–4: Equipment Required 6–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–5: Secondary Power Supply Voltages 6–58. . . . . . . . . . . . . . . . . . .
Table 7–1: International Power Cords 7–2. . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–2: Option 03 Digital Output Signals 7–4. . . . . . . . . . . . . . . . . . . .
Table 7–3: Option 04 Connector Pin Assignments 7–12. . . . . . . . . . . . . . .
Table 7–4: Standard Accessories List 7–18. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–5: Optional Accessories List 7–18. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7–6: Maintenance Kit Contents 7–19. . . . . . . . . . . . . . . . . . . . . . . . .
viii
AWG2021 Service Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.
Only qualified personnel should perform service procedures.
Injury Precautions
Use Proper Power Cord
Avoid Electric Overload
Ground the Product
Do Not Operate Without
Covers
Use Proper Fuse
Do Not Operate in
Wet/Damp Conditions
Do Not Operate in
Explosive Atmosphere
To avoid fire hazard, use only the power cord specified for this product.
To avoid electric shock or fire hazard, do not apply a voltage to a terminal that is
outside the range specified for that terminal.
This product is grounded through the grounding conductor of the power cord. To
avoid electric shock, the grounding conductor must be connected to earth
ground. Before making connections to the input or output terminals of the
product, ensure that the product is properly grounded.
To avoid electric shock or fire hazard, do not operate this product with covers or
panels removed.
To avoid fire hazard, use only the fuse type and rating specified for this product.
To avoid electric shock, do not operate this product in wet or damp conditions.
To avoid injury or fire hazard, do not operate this product in an explosive
atmosphere.
Product Damage Precautions
Use Proper Power Source
Provide Proper Ventilation
Do Not Operate With
Suspected Failures
AWG2021 Service Manual
Do not operate this product from a power source that applies more than the
voltage specified.
To prevent product overheating, provide proper ventilation.
If you suspect there is damage to this product, have it inspected by qualified
service personnel.
ix
General Safety Summary
Safety Terms and Symbols
Terms in This Manual
Terms on the Product
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product
The following symbols may appear on the product:
DANGER
High Voltage
Certifications and Compliances
CSA Certified Power
Cords
x
CSA Certification includes the products and power cords appropriate for use in
the North America power network. All other power cords supplied are approved
for the country of use.
Protective Ground
(Earth) Terminal
ATTENTION
Refer to
Manual
Double
Insulated
AWG2021 Service Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone
Disconnect Power
Use Caution When
Servicing the CRT
Use Care When Servicing
With Power On
Do not perform internal service or adjustments of this product unless another
person capable of rendering first aid and resuscitation is present.
To avoid electric shock, disconnect the main power by means of the power cord
or, if provided, the power switch.
To avoid electric shock or injury, use extreme caution when handling the CRT.
Only qualified personnel familiar with CRT servicing procedures and precautions
should remove or install the CRT.
CRTs retain hazardous voltages for long periods of time after power is turned off.
Before attempting any servicing, discharge the CRT by shorting the anode to
chassis ground. When discharging the CRT, connect the discharge path to ground
and then the anode. Rough handling may cause the CRT to implode. Do not nick
or scratch the glass or subject it to undue pressure when removing or installing it.
When handling the CRT, wear safety goggles and heavy gloves for protection.
Dangerous voltages or currents may exist in this product. Disconnect power,
remove battery (if applicable), and disconnect test leads before removing
protective panels, soldering, or replacing components.
XĆRadiation
AWG2021 Service Manual
To avoid electric shock, do not touch exposed connections.
To avoid x-radiation exposure, do not modify or otherwise alter the high-voltage
circuitry or the CRT enclosure. X-ray emissions generated within this product
have been sufficiently shielded.
xi
Service Safety Summary
xii
AWG2021 Service Manual
Preface
Manual Structure
This is the service manual for the AWG2021 Arbitrary Waveform Generator. The
manual contains information needed to service the AWG2021 to the module
level.
This manual is divided into sections, such as Specifications and Theory of
Operation. Further, some sections are divided into subsections, such as Product
Description and Removal and Installation Procedures.
Sections containing procedures also contain introductions to those procedures.
Be sure to read these introductions because they provide information needed to
do the service correctly and efficiently. The following contains a brief description
of each manual section.
H Specifications contains a description of the AWG2021 and the characteristics
that apply to it.
H Operating Information includes general information and operating instruc-
tions at the level needed to safely power on and service the AWG2021.
H Theory of Operation contains circuit descriptions that support general service
to the module level.
H Performance Verification contains a collection of procedures for confirming
that the AWG2021 functions properly and meets warranted limits.
H Adjustment Procedures contains a collection of procedures for adjusting the
AWG2021 to meet warranted limits.
H Maintenance contains information and procedures for performing preventive
and corrective maintenance of the AWG2021. These instructions include
cleaning, module removal and installation, and fault isolation to the module.
H Options contains information on servicing any of the factory-installed
options that your AWG2021 includes.
H Electrical Parts List contains a statement referring you to Mechanical Parts
List, where both electrical and mechanical modules are listed. See below.
H Diagrams contains block diagrams and an interconnection diagram useful in
isolating failed modules.
H Mechanical Parts List includes a table of all replaceable modules, their
descriptions, and their Tektronix part numbers.
AWG2021 Service Manual
xiii
Preface
Manual Conventions
This manual uses certain conventions that you should become familiar with.
Some sections of the manual contain procedures for you to perform. To keep
those instructions clear and consistent, this manual uses the following
conventions:
H Instructions for menu selection follow this format: FRONT PANEL
BUTTON!Main Menu Button!Side Menu Button. For example, “Press
UTILITY!Misc!Reset to Factory!O.K.”
H Names of front panel controls and menus appear in the same case (initial
capitals, all uppercase, etc.) in the manual as is used on the AWG2021 front
panel and menus. Front panel names are all upper-case letters; for example,
MODE MENU, CH 1, etc.
H Instruction steps are numbered unless there is only one step.
Modules
Safety
Throughout this manual, any replaceable component, assembly, or part of the
AWG2021 is referred to generically as a module. In general, a module is an
assembly (like a circuit board), rather than a component (like a resistor or an
integrated circuit). Sometimes a single component is a module; for example, the
chassis of the AWG2021 is a module.
Symbols and terms related to safety appear in the Safety Summary near the
beginning of this manual.
Finding Other Information
Other documentation for the AWG2021 Arbitrary Waveform Generator includes:
H The AWG2021 User Manual contains a tutorial to quickly describe how to
H The AWG2021 Programmer Manual explains how to control the AWG2021
operate the AWG2021. It also includes an in-depth discussion on how to
more completely use AWG2021 features.
with a computer through the GPIB or RS-232-C interface.
xiv
AWG2021 Service Manual
Introduction
Adjustment Interval
This manual contains information needed to properly service the AWG2021
Arbitrary Waveform Generator, as well as general information critical to safe and
effective servicing.
To prevent personal injury or damage to the AWG2021, consider the following
before attempting service:
H The procedures in this manual should be performed only by a qualified
service person
H Read the General Safety Summary and the Service Safety Summary,
beginning on page ix near the beginning of this manual
H Read Preparation for Use in section 2, Operating Information
When using this manual for servicing, be sure to follow all warnings, cautions,
and notes.
Strategy for Servicing
Generally, the manual adjustments described in section 5, Adjustment Procedures, should be done every 12 months. In addition, adjustment is recommended
after module replacement.
Throughout this manual, the term, module, refers to any field-replaceable
component, assembly, or part of the AWG2021.
This manual contains all the information needed for periodic maintenance of the
AWG2021. (Examples of such information are procedures for checking
performance and for readjustment.)
Further, it contains all information for corrective maintenance down to the
module level. To isolate a failure to a module, use the fault isolation procedures
found in Troubleshooting, part of section 6, Maintenance. To remove and replace
any failed module, follow the instructions in Removal and Installation Proce-
dures, also part of section 6. After isolating a faulty module, replace it with a
fully-tested module obtained from the factory. Section 10, Mechanical Parts
List, contains part number and ordering information for all replaceable modules.
AWG2021 Service Manual
xv
Introduction
Tektronix Service Offerings
Tektronix provides service to cover repair under warranty as well as other
services that may provide a cost-effective answer to your service needs.
Whether providing warranty repair service or any of the other services listed
below, Tektronix service technicians are well equipped to service the AWG2021.
Tektronix technicians train on Tektronix products; they have access to the latest
information on improvements to the AWG2021 as well as the latest new options.
Warranty Repair Service
Repair or Calibration
Service
Tektronix warrants this product for one year from date of purchase. (The
warranty appears on the back of the title page in this manual.) Tektronix
technicians provide warranty service at most Tektronix service locations
worldwide. The Tektronix product catalog lists all service locations worldwide.
The following services can be purchased to tailor repair and/or calibration of the
AWG2021 to fit your requirements.
AtĆdepot Service. Tektronix offers several standard-priced adjustment (calibration) and repair services:
H A single repair and/or adjustment
H Calibrations using equipment and procedures that meet the traceability
standards specific to the local area
H Annual maintenance agreements that provide for either calibration and repair
or calibration only of the AWG2021
Of these services, the annual maintenance agreement offers a particularly
cost-effective approach to service for many owners of the AWG2021.
xvi
Self Service
Tektronix supports repair to the module level by providing Module Exchange.
Module Exchange. This service reduces down-time for repair by allowing you to
exchange most modules for remanufactured ones. Tektronix ships an updated and
tested exchange module from the Beaverton, Oregon service center, typically
within 24 hours. Each module comes with a 90-day service warranty.
For More Information. Contact your local Tektronix service center or sales
engineer for more information on any of the repair or adjustment services just
described.
AWG2021 Service Manual
Specifications
Product Description
The AWG2021 is a portable arbitrary waveform generator capable of generating
both arbitrary waveforms and standard function waveforms. Key features
include:
H Arbitrary waveform generation from waveform data files that you:
H Create using the graphical waveform editor
H Generate from equations you create using the equation editor
H Transfer from GPIB or RS-232-C interfaces
H Directly transfer from a Tektronix TDS Digitizing Oscilloscope,
H Continuous generation of arbitrary waveform data files you specify in a
sequence file
2200 Series, 2400 Series, or 11000 Series Digital Storage Oscilloscope
(DSO), DSA Series Digital Analyzer, RTD710A Transient Digitizer,
AFG2020 Arbitrary Function Generator, or from another AWG2000
Series Arbitrary Waveform Generator
H Stepped arbitrary waveform generation of waveform data files and/or
sequence files you specify in an autostep file (Autostep mode)
H Single- or dual-channel waveform output to 5 V
Option 02)
H Point clock rate from 10 Hz to 250 MHz
H Continuous, triggered, gated, or burst trigger modes
H Amplitude modulation
H Output waveform Add function (CH 2 to CH1)
H Internal waveform memory of 256K 12 bits for each channel
H Internal catalog memory of 2.2 M
H Waveform file storage in internal nonvolatile memory (512K) or on external
disk
H Two waveform markers (per channel)
H Rear-panel waveform output in digital format for ECL level (Option 03)
H Rear-panel waveform output in digital format for TTL level (Option 04)
(the second channel is
p-p
AWG2021 Service Manual
1-1
Product Description
H Editing in frequency domain and convolution waveform editor capability
(Option 09)
H Sample waveform library and sample GPIB programming examples on disk
H Standard function waveforms
H Internal diagnostic/calibration
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AWG2021 Service Manual
Performance Characteristics
This subsection describes the conditions required for the AWG2021 to operate to
specified characteristics.
Performance Conditions
The electrical characteristics are valid under the following conditions:
1. The instrument must have been calibrated at an ambient temperature from
+20_ C to +30_ C.
2. Allow twenty minutes warm-up time for operation to specified accuracy.
3. The instrument operates at an ambient temperature from +10_ C to +40_ C,
unless otherwise noted.
Any conditions that are unique to a particular characteristic are expressly stated
as part of that characteristic.
The electrical and environmental performance limits, together with the related
validation procedure, comprise a complete statement of the electrical and
environmental performance of a calibrated instrument.
Introduction
Electrical characteristic limits in the Description column are verified by
completing the test listed in the Performance Test column.
The performance characteristics on the AWG2021 can be divided into three
categories:
H Nominal Traits. General characteristics are described not by equipment
performance and limits but by such things as memory capacity.
H Warranted Characteristics. Warranted characteristics are described in terms
of quantifiable performance limits which are guaranteed.
H T ypical Characteristics. Typical characteristics are described in terms of
typical or average performance for the AWG2021. The characteristics
described herein are not absolutely guaranteed.
AWG2021 Service Manual
1-3
Performance Characteristics
Nominal Traits
This section contains a collection of tables that list the various nominal traits
that describe the AWG2021 Arbitrary Waveform Generator. Electrical and
mechanical traits are included.
Nominal traits are described not by equipment performance and limits but by
such things as memory capacity.
Table 1-1: Electrical Characteristics
Characteristics Description Performance Test
Operating Modes
Continuous Generates the waveform continuously. Check Cont Mode, page
4-12.
Triggered Output quiescent until triggered by an external, GPIB or
manual trigger; then generates a waveform or sequence only
one time.
Gated Same as triggered mode except periods are output for the
duration of the gated signal.
Burst Output quiescent until triggered by an external, GPIB or
manual trigger; then generates a waveform or sequence
predefined count.
Waveform Advance Continuously generates the waveform in the predefined
(edited) sequence and the next trigger advances the waveform.
Autostep Outputs the first waveform in the predefined Autostep File
once. The next trigger advances to output the next waveform
once and so on, for each successive trigger.
Arbitrary Waveforms
Waveform Memory
Memory Length
Waveform 256K ×12 bits
Marker1 256K × 1bit
Marker2 256K × 1bit
Waveform 64 to 256K in multiple of 8 data points
Sequence Memory 8K, 32 bits/word
Scan Counter 1 to 64 K (16 bits)
Burst Counter 1 to 64 K (16 bits)
Check Triggered Mode, page
4-14.
Check Gated Mode, page
4-18.
Check Burst Mode, page
4-16.
Check Waveform Advance
Mode, page 4-21.
Check Autostep Mode, page
4-23
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AWG2021 Service Manual
Table 1-1: Electrical Characteristics (Cont.)
Characteristics Performance TestDescription
Main Output
Amplitude Except multiply (AM) and add (Add) operation
Range 0.05 to 5 V
The amplitude range expands about 2 times (10 V
open circuit. It's actual value is two times the displayed value.
±10 V ≥(The absolute peak Amplitude + Offset)
Resolution 1mV
Offset
Range ±2.5 V into 50 W
The offset range expands about 2 times (-5 V to +5 V) into
open circuit. Its actual value is two times the displayed value.
±10 V ≥(The absolute peak Amplitude + Offset)
-100 mA to +100 mA into 50 W (current source output)
Resolution 5mV
Impedance 50 W
Auxiliary Output
SYNC When F.G mode and the frequency is above 250 kHz, the Sync
pulse occurs one time per two waveforms.
Amplitude >1.2 V into 50 W, >2.4 V into open circuit
Impedance 50 W
MARKER1
Amplitude 2.5 V (+5%, -10%) into 50 W, 5 V (+5%, -10%) into open
circuit
Impedance 50 W
Period Jitter Refer to Table 1-1-1 (measured by TDS694C-1MHD with
TDSJIT1)
Cycle to Cycle Jitter Refer to Table 1-1-2 (measured by TDS694C-1MHD with
TDSJIT1)
MARKER2
Amplitude 2.5 V (+5%, -10%) into 50 W, 5 V (+5%, -10%) into open
circuit
Impedance 50 W
CLOCK
Amplitude 1 V into 50 W
Impedance 50 W
into 50 W
pĆp
pĆp
) into
Performance Characteristics
AWG2021 Service Manual
1-5
Performance Characteristics
Table 1-1: Electrical Characteristics (Cont.)
Characteristics Performance TestDescription
Period Jitter Refer to Table 1-1-3 (measured by TDS694C-1MHD with
TDSJIT1)
Cycle to Cycle Jitter Refer to Table 1-1-4 (measured by TDS694C-1MHD with
TDSJIT1)
ECL DIGITAL DATA OUT
(Option 03)
Level ECL compatible
Output Signals Same wires to DAC
Data (D0 to D11)
Clock
TTL DIGITAL DATA OUT
(Option 04)
Output Signals
CH1 Data (D0 to D11), Clock
CH2 (Option 02) Data (D0 to D11), Clock
Amplitude >2 V into 50 W
Impedance 50 W
Connector 26 pin header
Auxiliary Input
TRIGGER
Threshold Level -5 V to 5V
Resolution 0.1V
Impedance 1MW with 30 pF (max) or 50 W
ARM
Range 2 V
Impedance 10 kW
CLOCK
Impedance 50 W
Function Generator
Waveform Shape Sine, Triangle, Square, Ramp, Pulse
Output Parameter All of these values with the exception of frequency can be set
Frequency 1.000 Hz to 2.500 MHz
Amplitude Can be set between 50 mV and5Vin1mVincrements
Offset Can be set between ±2.5 V in 5 mV increments
Polarity Normal, Invert
(-1V to 1V) for 100% modulation
pĆp
independently for each channel. Frequency settings apply to
each channel.
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AWG2021 Service Manual
Table 1-1: Electrical Characteristics (Cont.)
Characteristics Performance TestDescription
Duty 0% to 100% Pulse only. Can be set in 1% increments
Operating Mode Continuous mode
Auxiliary Output
Marker Signal 2.5 V into 50 W, generated at the starting point of the
waveform. The pulse width will vary depending on the
frequency.
Display
CRT
Display Area 5.2 inches horizontally by 3.9 inches vertically
Resolution 640 (H) × 480 (V) pixels
AC Power Source
AC Line Power
Fuse Rating 6A fast blow, 250 V, UL198G(3AG) or 5 A (T), 250 V, IEC127
Battery
Type Li3 V, 650 mAH
Performance Characteristics
Table 1-1-1 ȧPeriod Jitter (CH1 Marker 1 Out)
Clock=250MS/s
StdDev Pk-Pk StdDev Pk-Pk
11.0 ps 60.0 ps 10.5 ps 50.0 ps
Table 1-1-2 ȧCycle to Cycle Jitter (CH1 Marker 1 Out)
Clock=250MS/s
StdDev Pk-Pk StdDev Pk-Pk
20.0 ps 110.0 ps 20.0 ps 90.0 ps
Table 1-1-3 ȧPeriod Jitter (Clock Out)
Clock=250MS/s
StdDev Pk-Pk StdDev Pk-Pk
11.0 ps 60.0 ps 10.5 ps 50.0 ps
Table 1-1-4 ȧCycle to Cycle Jitter (Clock Out)
Clock=250MS/s
StdDev Pk-Pk StdDev Pk-Pk
20.0 ps 110.0 ps 20.0 ps 90.0 ps
Clock=100MS/s
Clock=100MS/s
Clock=100MS/s
Clock=100MS/s
AWG2021 Service Manual
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Performance Characteristics
Table 1-2: Mechanical Characteristics
Characteristics Description
Net Weight
Standard 9.7 kg
Size
Height 6.4 inches with feet
Width 14.3 inches with handle
Length 19.25 inches with front cover
22.2 inches with handle extended
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AWG2021 Service Manual
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