Tektronix AFG3021, AFG3022, AFG3101, AFG3102, AFG3251 Service Manual

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Service Manual

AFG3000 Series Arbitrary/Function Generators

071-1640-02

This document supports firmware version 1.2.0 and above.

www.tektronix.com

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions.

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.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc. 14200 SW Karl Braun Drive P.O. Box 500

Beaverton, OR 97077 USA

For product information, sales, service, and technical support:

 In North America, call 1-800-833-9200.  Worldwide, visit www.tektronix.com to find contacts in your area.

WARRANTY 16

Tektronix warrants that the product will be free from defects in materials and workmanship for a period of three (3) years from the date of original purchase from an authorized Tektronix distributor. If the 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. Batteries are excluded from this warranty. Parts, modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance. All replaced parts, modules and products become the property of Tektronix.

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, shipping charges prepaid, and with a copy of customer proof of purchase. 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; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or d) 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 THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESS 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.

Specifications

Operating Information

General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi

Finding Other Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Performance Verification Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Strategy for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Tektronix Service Offerings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Performance Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Operating Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Protect Your Instrument from Misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Floating Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Protect Your DUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Powering the Instrument On and Off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Self Test and Self Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Getting Acquainted with Your Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Screen Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Theory of Operation

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Generator section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Performance Verification

Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Self Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Frequency/Period Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Amplitude Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

DC Offset Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

AFG3000 Series Arbitrary/Function Generators Service Manual i

Table of Contents

Adjustment Procedures

AC Flatness Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Harmonics Distortion Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

Total Harmonic Distortion Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

Spurious Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

Rise-Fall time Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Performance Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Enable the service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Save menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Clear CAL Data menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Reference Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

LF Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Flatness adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Spurious adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Trigger delay adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Setting the Serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Setting the MAC Address (AFG310x and AFG325x only) . . . . . . . . . . . . . . . . . . . . 5-12

Maintenance

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Preventing ESD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Removal and Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Adjustment after repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

List of Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Summary of Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Flip feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Front-Panel knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Rear case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Top cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Front case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

A75 Front-panel board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Display module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

Output board (AFG310x, AFG325x) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

Separation of the rear module and main chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-17

Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

A70, A72 CPU board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20

A82 BNC Insulator board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Generator board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

A81 BNC Insulator board, BNC bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

ii AFG3000 Series Arbitrary/Function Generators Service Manual

Electrical Parts List

Diagrams

Replaceable Parts

Table of Contents

Required tools and equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

Troubleshooting tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29

Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

Using the Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

AFG3000 Series Arbitrary/Function Generators Service Manual iii

List of Tables

Table 1-1: Operation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Table 1-2: Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Table 1-3: Frequency/Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Table 1-4: Phase (except DC, Noise, and Pulse) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Table 1-5: Lead Delay (Pulse) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Table 1-6: Amplitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Table 1-7: DC Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Table 1-8: Internal Noise Add . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Table 1-9: Output Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Table 1-10: Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Table 1-11: Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Table 1-12: Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Table 1-13: System Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Table 1-14: Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Table 1-15: Environmental, EMC, Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Table 2-1: General features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Table 3-1: Combination of circuit boards used in each model . . . . . . . . . . . . . . . 3-1

Table 4-1: Performance test items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Table 4-2: Test equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Table 5-1: Adjustments performed after repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Table 5-2: Test equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Table 6-1: External inspection check list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Table 6-2: Internal inspection check list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Table 6-3: Required equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

Table 6-4: Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30

iv AFG3000 Series Arbitrary/Function Generators Service Manual

List of Figures

Figure 1-1: AFG3000 Series dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Figure 1-2: RM3100 Rackmount dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Figure 2-1: Front size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Figure 2-2: Output and Input connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Figure 2-3: Fuse adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Figure 2-4: Grounding equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Figure 2-5: Front panel controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Figure 2-6: Rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Figure 2-7: Screen interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Figure 3-1: AFG3000 Series block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Figure 4-1: Frequency/Period tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Figure 4-2: 50 ohm terminator accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Figure 4-3: Amplitude tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Figure 4-4: 50 ohm terminator accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Figure 4-5: DC offset tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Figure 4-6: AC flatness tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Figure 4-7: Harmonic distortion tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

Figure 4-8: Total Harmonic distortion tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

Figure 4-9: Spurious tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

Figure 4-10: Rise-Fall time tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

Figure 5-1: Reference Clock adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Figure 5-2: LF adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Figure 5-3: Flatness adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Figure 5-4: Spurious adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Figure 5-5: Trigger delay adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Figure 6-1: Disassembly order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Figure 6-2: Removing and installing the flip feet . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Figure 6-3: Rear case removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Figure 6-4: Pasting the urethane-form-gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11

Figure 6-5: Top cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Figure 6-6: Front case removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Figure 6-7: A75 front-panel board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Figure 6-8: Display module removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

Figure 6-9: Output board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

Figure 6-10: Separation of the rear module and main chassis . . . . . . . . . . . . . . 6-16

Figure 6-11: Pull out the rear module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

Figure 6-12: Inverter removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

Figure 6-13: Inverter installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

Figure 6-14: Fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

Figure 6-15: Power supply removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19

Figure 6-16: Remove the BNC connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20

AFG3000 Series Arbitrary/Function Generators Service Manual v

List of Figures

Figure 6-17: CPU board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Figure 6-18: Generator board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

Figure 6-19: A81 BNC Insulator board and BNC bracket removal . . . . . . . . . . 6-23

Figure 6-20: Platform troubleshooting procedure . . . . . . . . . . . . . . . . . . . . . . . . 6-26

Figure 6-21: Generator troubleshooting procedure . . . . . . . . . . . . . . . . . . . . . . . 6-27

Figure 8-1: Interconnection for AFG302x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Figure 8-2: Interconnection for AFG310x and AFG325x . . . . . . . . . . . . . . . . . . . 8-3

Figure 9-1: Exploded diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

Figure 9-2: Exploded diagram, rear modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9

vi AFG3000 Series Arbitrary/Function Generators 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. To avoid potential hazards, use this product only as specified.

Only qualified personnel should perform service procedures.

To Avoid Fire or

Personal Injury

Use Proper Power Cord. Use only the power cord specified for this product and

certified for the country of use.

Ground the Product. 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.

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings and markings on the product. Consult the product manual for further ratings information before making connections to the product.

The common terminal is at ground potential. Do not connect the common terminal to elevated voltages.

Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.

Do Not Operate Without Covers. Do not operate this product with covers or panels removed.

Avoid Exposed Circuitry. Do not touch exposed connections and components when power is present.

Do Not Operate With Suspected Failures. If you suspect there is damage to this product, have it inspected by qualified service personnel.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

Provide Proper Ventilation. Refer to the manual’s installation instructions for

details on installing the product so it has proper ventilation.

AFG3000 Series Arbitrary/Function Generators Service Manual vii

General Safety Summary

Symbols and Terms

Terms in this Manual. These terms may appear in this manual:

WAR N I N G. 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.

Terms on the Product. 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:

WARNING

High Voltage

Protective Ground

(Earth) Terminal

CAUTION

Refer to Manual

Double

Insulated

viii AFG3000 Series Arbitrary/Function Generators 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. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present.

Disconnect Power. To avoid electric shock, disconnect the mains power by means of the power cord or, if provided, the power switch.

Use Care When Servicing With Power On. 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.

To avoid electric shock, do not touch exposed connections.

AFG3000 Series Arbitrary/Function Generators Service Manual ix

Service Safety Summary

x AFG3000 Series Arbitrary/Function Generators Service Manual

Preface

This manual provides instructions to verify the performance of, calibrate, troubleshoot, and repair the arbitrary/function generators to the module level.

Unless noted otherwise, the term “AFG3000 Series” refers to the models in the AFG3021, AFG3022, AFG3101, AFG3102, AFG3251, and AFG3252 arbitrary/function generators.

The manual consists of the following sections:

 Specifications contains a description of the arbitrary/function generator and the

characteristics that apply to it.

 Operating Information includes general information and operating

instructions.

 Theory of Operation contains circuit descriptions that support service to the

module level.

 Performance Verification contains procedures for confirming that the

arbitrary/function generator functions properly and meets warranted limits.

 Adjustment Procedures contains information that you need to manually adjust

the arbitrary/function generator so that it meets specifications.

 Maintenance contains information and procedures for performing preventive

and corrective maintenance of the arbitrary/function generator. These instructions include cleaning, module removal and installation, and fault isolation to the module.

 Replaceable Electrical Parts contains a statement referring you to Replaceable

Mechanical Parts, where both electrical and mechanical modules are listed.

 Diagrams contains interconnection diagrams.

 Replaceable Mechanical Parts includes a table of all replaceable modules,

their descriptions, and their Tektronix part numbers.

AFG3000 Series Arbitrary/Function Generators Service Manual xi

Preface

Finding Other Information

This manual mainly focuses on the performance verification, troubleshooting and maintenance of the arbitrary/function generator. See the following list for other documents supporting the arbitrary/function generator. All documents except Built-in Help are on the AFG3000 Series Product Documents CD-ROM that shipped with instrument.

Document name Description

AFG3000 Series Quick Start User Manual A quick reference to major features of the instrument and how they operate. It also provides

several tutorials to familiarize the user with basic instrument features.

AFG3000 Series Reference Manual An encyclopedia of topics that describe the arbitrary/function generator interface and

features, and gives background information on how to use them. It provides Menu Structures, User Interface, and Programming Information.

AFG3000 Series Built-in Help A built-in help system, integrated with the User Interface application that ships with this

product. The help is preinstalled in the instrument.

Manual Conventions

Modules

Safety

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:

 Front-panel controls and menu names appear in the same case (initial capitals,

all uppercase, and so on) in the manual as is used on the arbitrary/function generator front-panel and menus. Front-panel labels are all upper case letters (for example, MENU, SELECT, PULSE GEN, and so on).

 Instruction steps are numbered unless there is only one step.

Throughout this manual, any replaceable component, assembly, or part of the arbitrary/function generator 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 arbitrary/function generator is a module.

Symbols and terms related to safety appear in the Safety Summary near the beginning of this manual.

xii AFG3000 Series Arbitrary/Function Generators Service Manual

Introduction

This manual contains information that is needed to properly service the AFG3000 Series Arbitrary/Function Generators as well as general information that is critical to safe and effective servicing.

To prevent personal injury or damage to the arbitrary/function generator, consider the following before attempting service:

 The procedures in this manual should be performed only by a qualified service

person.

 Read the General Safety Summary on page vii and the Service Safety Summary,

beginning on page ix.

 Read Installation in Operating Information on page 2-2.

When using this manual for servicing, be sure to follow all warnings, cautions, and notes.

Performance Verification Procedures

Strategy for Servicing

The performance check described in the Performance Verification section should be done every 12 months. In addition, a performance check is recommended after module replacement.

If the AFG3000 Series does not meet performance criteria, repair is necessary.

Throughout this manual, the term, module, refers to any field-replaceable component, assembly, or part of the arbitrary/function generator.

This manual contains the information needed for periodic maintenance of the arbitrary/function generator. Further, it contains information for corrective maintenance down to the module level. To isolate a failure to a module, use the troubleshooting procedures found in the Maintenance section. To remove and replace any failed module, follow the instructions in the Removal and Installation Procedures subsection. After isolating a faulty module, replace it with a fully-tested module obtained from the factory. The Replaceable Mechanical Parts section contains part number and ordering information for all replaceable modules.

AFG3000 Series Arbitrary/Function Generators Service Manual xiii

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 trained to service the arbitrary/function generator. They have access to the latest information on improvements to the AFG3000 Series as well as new options.

Warranty Repair Service

Self Service

Tektronix warrants this product for three years from date of purchase. The warranty appears at the front of this manual. Tektronix technicians provide warranty service at most Tektronix service locations.

Tektronix supports repair to the replaceable part and module level.

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.

xiv AFG3000 Series Arbitrary/Function Generators Service Manual

Specifications

Performance Conditions

These specifications apply to all AFG3000 Series Arbitrary/Function Generators. All specifications are guaranteed unless labeled “typical”. Typical specifications are provided for your convenience but are not guaranteed.

Specifications that are check marked with the ✔ symbol are checked directly (or indirectly) in the Performance Verification section.

All specifications apply to the arbitrary/function generator unless noted otherwise. These specifications are valid under the following conditions:

The performance limits in this specification are valid with these conditions:

 The instrument must have been calibrated/adjusted at an ambient temperature

between +20

 The instrument must be operating at an ambient temperature between +10 °C

and +40

°C and +30 °C.

°C.

 The instrument must have had a warm-up period of at least 20 minutes.

 The instrument must be in an environment with temperature, altitude, and

humidity within the operating limits described in these specifications.

Electrical

Table 1-1: Operation mode

Characteristics Description

Run Mode Continuous, Modulation, Sweep, and Burst

Burst Count 1 to 1,000,000 cycles or Infinite

Internal Trigger Rate 1.000 ms to 500.0 s

AFG3000 Series Arbitrary/Function Generators Service Manual 1-1

Specifications

Table 1-2: Waveforms

Characteristics Description

Standard Sine, Square, Pulse, Ramp, More (Sin(x)/x, Noise, DC, Gaussian, Lorentz, Exponential Rise,

Exponential Decay, and Haversine)

Arbitrary Waveform AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

Waveform Length 2 to 65,536 2 to 131,072 2 to 131,072

Sampling Rate 250 MS/s Waveform Length ≤16384:

1 GS/s 16384 < Waveform Length: 250 MS/s

Waveform Length ≤16384: 2 GS/s 16384 < Waveform Length: 250 MS/s

Resolution 14 bits

Number of Non-volatile Waveform

Memory

Table 1-3: Frequency/Period

Characteristics Description PV

reference page

Frequency Range AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

Sine

1 µHz to 25 MHz 1 µHz to 100 MHz 1 µHz to 240 MHz

Square 1 µHz to 12.5 MHz 1 µHz to 50 MHz 1 µHz to 120 MHz

Pulse 1 mHz to 12.5 MHz 1 mHz to 50 MHz 1 mHz to 120 MHz

Ramp, Sin(x)/X, Gaussian,

1 µHz to 250 kHz 1 µHz to 1 MHz 1 µHz to 2.4 MHz

Lorentz, Exponential Rise, Exponential Decay, Haversine

Arbitrary

Noise Bandwidth (-3 dB),

1 mHz to 12.5 MHz 1 mHz to 50 MHz 1 mHz to 120 MHz

25 MHz 100 MHz 240 MHz

typical

Resolution 1 µHz or 12 digits

✔Accuracy (Stability) ±1 ppm, 0 °C to 50 °C (except Arb)

page 4-19

±1 ppm ±1 µHz, 0 °C to 50 °C (Arb)

Accuracy (Aging) ±1 ppm/year

Triggered/Gated Burst Mode:

AFG3021/AFG3022, 1

AFG3101/AFG3102, 1

AFG3251/AFG3252, 1

µHz to 12.5 MHz µHz to 50 MHz µHz to 120 MHz

1-2 AFG3000 Series Arbitrary/Function Generators Service Manual

Table 1-4: Phase (except DC, Noise, and Pulse)

Characteristics Description

Range

Resolution: 0.01° (sine), 0.1° (other standard waveforms)

–180.00° to +180.00°

Table 1-5: Lead Delay (Pulse)

Characteristics Description

Range 0 ps to Period – [Pulse Width + 0.8 * (Leading Edge Time + Trailing Edge Time)]

Resolution 10 ps or 8 digits

Table 1-6: Amplitude

Specifications

Characteristics Description PV

reference page

Range

(into open circuit load)

✔Accuracy ±(1% of setting +1 mV) (at 1 kHz sine waveform, amplitude >10 mV

Resolution 0.1 mV

Units

AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

10 mV 20 mV

, V

p-p

to 10 V

p-p

rms

p-p

to 20 V

p-p

, 0.1 mV

rms

, dBm, and Volt (High Level and Low Level)

20 mV 40 mV

to 10 V

p-p

to 20 V

p-p

, 1 mV, 0.1 dBm or 4 digits

50 mV 100 mV

to 5 V

p-p

to 10 V

p-p

, 0 V offset) page 4-20

p-p

Output Impedance 50 Ω

Isolation 42 V

AFG3251/AFG3252 (frequency range: >200 MHz to 240 MHz): 50 mV

dBm is used only for sine waveform.

maximum to earth

p-p

to 4 V

into 50 Ω, 100 mV

p-p

to 8 V

into open circuit load

p-p

AFG3000 Series Arbitrary/Function Generators Service Manual 1-3

Specifications

Table 1-7: DC Offset

Characteristics Description PV

Range

✔Accuracy

Resolution 1 mV

Output Impedance 50 Ω

AFG3021/AFG3022 and AFG3101/AFG3102: ±10 Vpk ac + dc; into open circuit load

AFG3251/AFG3252: ±5 V

AFG3021/AFG3022 and AFG3101/AFG3102: Add 0.5 mV per °C for operation outside the range of 20 °C to 30 °C. AFG3251/AFG3252: Add 2.0 mV per °C for operation outside the range of 20 °C to 30 °C.

ac + dc; into open circuit load

AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

±5 V

ac + dc into 50 Ω ±5 Vpk ac + dc into 50 Ω ±2.5 Vpk ac + dc

into 50 Ω

±(1% of |setting| +5 mV + 0.5% of amplitude (V

)) page 4-22

p-p

reference page

Table 1-8: Internal Noise Add

Characteristics Description

Range 0% to 50% of amplitude setting (V

) of signal waveform

p-p

Resolution 1%

Table 1-9: Output Characteristics

Characteristics Description

Sine Wave AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

✔Flatness

(at 1.0 V

amplitude (+4 dBm),

p-p

relative to 100 kHz)

1 mHz ≤ frq < 5 MHz: ±0.15 dB

5 MHz ≤ frq < 20 MHz: ±0.3 dB

20 MHz ≤ frq ≤ 25 MHz: ±0.5 dB

1 mHz ≤ frq < 5 MHz: ±0.15 dB

5 MHz ≤ frq < 25 MHz: ±0.3 dB

25 MHz ≤ frq ≤ 100 MHz: ±0.5 dB

1 mHz ≤ frq < 5 MHz: ±0.15 dB

5 MHz ≤ frq < 25 MHz: ±0.3 dB

25 MHz ≤ frq < 100 MHz: ±0.5 dB

100 MHz ≤ frq < 200 MHz: ±1.0 dB

PV reference page

page 4-24

200 MHz ≤ frq ≤ 240 MHz: ±2.0 dB

1-4 AFG3000 Series Arbitrary/Function Generators Service Manual

Table 1-9: Output Characteristics (cont.)

Specifications

Characteristics Description

PV reference page

✔Harmonic Distortion

(at 1.0 V

amplitude)

p-p

✔Total Harmonic Distortion (at 1 V

✔Spurious (at 1 V

amplitude)

p-p

(non harmonic)

amplitude)

p-p

Phase Noise, typical (at 1 V

amplitude)

p-p

10 Hz ≤ frq < 20 kHz: <–70 dBc

20 kHz ≤ frq < 1 MHz: <–60 dBc

1 MHz ≤ frq < 10 MHz: <–50 dBc

10 MHz ≤ frq ≤ 25 MHz: <–40 dBc

10 Hz ≤ frq < 1 MHz: <–60 dBc

1 MHz ≤ frq < 5 MHz: <–50 dBc

5 MHz ≤ frq ≤ 100 MHz: <–37 dBc

10 Hz ≤ frq < 1 MHz: <–60 dBc

1 MHz ≤ frq < 5 MHz: < –50 dBc

5 MHz ≤ frq < 25 MHz: < –37 dBc

25 MHz ≤ frq ≤ 240 MHz: < –30 dBc

10 Hz to 20 kHz: <0.2% page 4-28

10 Hz ≤ frq < 1 MHz: <–60 dBc

1 MHz ≤ frq ≤ 25 MHz: <–50 dBc

10 Hz ≤ frq < 1 MHz: <–60 dBc

1 MHz ≤ frq < 25 MHz: <–50 dBc

25 MHz ≤ frq ≤ 100 MHz: –50 dBc + 6 dBc/oct

10 Hz ≤ frq < 1 MHz: < –50 dBc

1 MHz ≤ frq < 25 MHz: < –47 dBc

25 MHz ≤ frq ≤ 240 MHz: –47dBc + 6dBc/oct

20 MHz: < –110 dBc/Hz at 10 kHz offset

page 4-26

page 4-30

Residual Clock Noise, typical –63 dBm –57 dBm –57 dBm

Square Wave AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

✔Rise Time/Fall Time ≤ 18 ns ≤ 5ns ≤ 2.5 ns page 4-33

Jitter (rms), typical 500 ps 200 ps 100 ps

Pulse AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

Pulse Width 30 ns to 999.99 s 8 ns to 999.99 s 4 ns to 999.99 s

Resolution 10 ps or 5 digits

Pulse Duty 0.001% to 99.999%

Leading Edge/Trailing Edge transition time

18 ns to

0.625 * Pulse Period

5 ns to

0.625 * Pulse Period

2.5 ns to

0.625 * Pulse Period

Resolution 10 ps or 4 digits

Overshoot, typical <5%

Jitter (rms), typical 500 ps 200 ps 100 ps

Ramp

Linearity (at Frequency: 1 kHz, Amplitude: 1 V

p-p

≤ 0.1% of peak output at 10% to 90% of amplitude range

≤ 0.15% of peak output at 10% to 90% of amplitude range

≤ 0.2% of peak output at 10% to 90% of amplitude range

Symmetry: 100%)

Symmetry 0% to 100%

AFG3000 Series Arbitrary/Function Generators Service Manual 1-5

Specifications

Table 1-9: Output Characteristics (cont.)

Characteristics Description

Arbitrary AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

Rise Time/Fall Time, typical ≤ 20 ns ≤ 8ns ≤ 3ns

Jitter (rms), typical 4 ns 1 ns at 1 GS/s

4 ns at 250 MS/s

Exclude harmonics and channel crosstalk.

500 ps at 2 GS/s 4 ns at 250 MS/s

Table 1-10: Modulation

Characteristics Description

AM (Amplitude Modulation)

Carrier Waveforms Standard waveforms (except Pulse, DC, and Noise) and Arb

Modulation Source Internal or External

Internal Modulating

Sine, Square, Ramp, Noise, and Arb

Waveforms

Internal Modulating

2 mHz to 50.00 kHz

Frequency

Depth

0.0% to 120.0%

FM (Frequency Modulation) AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

Carrier Waveforms Standard waveforms (except Pulse, DC, and Noise) and Arb

Modulation Source Internal or External

Internal Modulating

Sine, Square, Ramp, Noise, and Arb

Waveforms

Internal Modulating

2 mHz to 50.00 kHz

Frequency

Peak Deviation DC to 12.5 MHz DC to 50 MHz DC to 120 MHz

PM (Phase Modulation)

Carrier Waveforms Standard waveforms (except Pulse, DC, and Noise) and Arb

Modulation Source Internal or External

Internal Modulating

Sine, Square, Ramp, Noise, and Arb

Waveforms

Internal Modulating

2 mHz to 50.00 kHz

Frequency

Phase Deviation Range

0.0 to 180.0 degrees

PV reference page

1-6 AFG3000 Series Arbitrary/Function Generators Service Manual

Table 1-10: Modulation

Characteristics Description

FSK (Frequency Shift Keying)

Carrier Waveforms Standard waveforms (except Pulse, DC, and Noise) and Arb

Modulation Source Internal or External

Internal Key Rate 2 mHz to 1.000 MHz

Numbers of Key 2

PWM (Pulse Width Modulation)

Carrier Waveforms Pulse

Modulation Source Internal or External

Internal Modulating

Sine, Square, Ramp, Noise, and Arb

Waveforms

Internal Modulating

2 mHz to 50.00 kHz

Frequency

Deviation Range

0.0% to 50.0% of pulse period

Sweep AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

Type Linear or Logarithmic

Start/Stop Frequency

1 µHz to 25 MHz 1 µHz to 100 MHz 1 µHz to 240 MHz

(except Arb)

Start/Stop Frequency

1 mHz to 25 MHz 1 mHz to 100 MHz 1 mHz to 240 MHz

(Arb)

Sweep/Hold/Return Time

Range: 1 ms to 300 s (Sweep time) 0 ms to 300 s (Hold/Return time) Resolution: 1 ms or 4 digits

Total Sweep Time Accuracy,

≤ 0.4%

typical

The maximum waveform length for Arb is 4,096. Waveform data points over 4,096 are ignored.

The maximum waveform length for Arb is 2,048. Waveform data points over 2,048 are ignored.

Pulse, DC, and Noise waveforms are not available.

Total sweep time = Sweep time + Hold time + Return time ≤ 300 s

Specifications

AFG3000 Series Arbitrary/Function Generators Service Manual 1-7

Specifications

Inputs/Outputs

Table 1-11: Front Panel

Characteristics Description

Trigger Output AFG3021/AFG3022 AFG3101/AFG3102 AFG3251/AFG3252

Level Positive TTL level pulse into 1 kΩ

Impedance 50 Ω

Jitter (rms), typical 500 ps 200 ps 100 ps

Trigger Input

Level TTL compatible

Pulse Width 100 ns minimum

Impedance 10 kΩ

Slope Positive/Negative, selectable

Trigger Delay 0.0 ns to 85.000 s

Resolution: 100 ps or 5 digits

Jitter (rms), typical Burst: <500 ps (Trigger input to signal output)

Table 1-12: Rear Panel

Characteristics Description

External Modulation Input

Input Range ±1.0 V full scale (except FSK)

3.3 V logic level (FSK)

Impedance 10 kΩ

Frequency Range AM, FM, PM, FSK, PWM: DC to 25 kHz (Sampling rate: 122 kS/s)

External Reference Output (AFG3101/AFG3102 and AFG3251/AFG3252)

Impedance 50 Ω, AC coupled

Amplitude 1.2 V

External Reference Input

Impedance 1 kΩ, AC coupled

Required Input Voltage Swing 100 mV

Lock Range 10 MHz ±35 kHz

CH1 Additional Input (AFG3101/AFG3102 and AFG3251/AFG3252)

Impedance 50 Ω

Input Range –1 V to +1 V (DC + peak AC)

Bandwidth DC to 10 MHz (–3 dB) at 1 V

into 50 Ω

p-p

to 5 V

p-p

1-8 AFG3000 Series Arbitrary/Function Generators Service Manual

General

Table 1-13: System Characteristics

Characteristics Description

Warm-up Time, typical 20 minutes minimum

Power On Self Calibration, typical <16 s

Configuration Times, typical USB LAN GPIB

Function Change 95 ms 103 ms 84 ms

Frequency Change 2 ms 19 ms 2 ms

Amplitude Change 60 ms 67 ms 52 ms

Select User Arb 88 ms 120 ms 100 ms

Data Download, typical 4000 points waveform data

GPIB: 42 ms USB: 20 ms LAN: 84 ms

Acoustic Noise, typical <50 dBA

Weight (approximate) 4.5 kg

Dimensions See Figure 1-1 and Figure 1-2 on page 1-11

Specifications

Tabl e 1- 1 4 : Po wer

Characteristics Description

Source Voltage and Frequency 100 V to 240 V, 47 Hz to 63 Hz

115 V, 360 Hz to 440 Hz

Power Consumption Less than 120 W

AFG3000 Series Arbitrary/Function Generators Service Manual 1-9

Specifications

Table 1-15: Environmental, EMC, Safety

Characteristics Description

Temperature Range

Operating 0 °C to +50 °C

Non operating –30 °C to +70 °C

Humidity

Operating At or below +40 °C: ≤ 80%

>+40 °C to +50 °C: ≤ 60%

Altitude

Operating Up to 3,000 meters (10,000 feet)

EMC Compliance

European Union EN 61326 Class A

EN 61000-3-2, 3-3 IEC 61000-4-2, 4-3, 4-4, 4-5, 4-6, 4-11

Australia AS/NZS 2064

Safety UL 61010-1:2004

CAN/CSA C22.2, No. 61010-1:2004 IEC 61010-1:2001

Emissions that exceed the levels required by this standard may occur when this equipment is connected to a test object.

To ensure compliance to the standards listed above, attach only high quality shielded cables to this instrument. High quality shielded cables

typically are braid and foil types that have low impedance connection to shielded connectors at both ends.

1, 2

1-10 AFG3000 Series Arbitrary/Function Generators Service Manual

Specifications

51.2

(2.02)

156.3 (6.16)

(1.13)

7.6

(0.30)

28.7

34.6

(1.37)

6.5

(0.26)

67.5

(2.66)

(0.87)

329.6

(12.98)

39.5

(1.56)

118.5

(4.67)

27.3

(1.08)

24.0

(0.95)

6.0

(0.24)

Knob

3.1

(0.13)

BNC connectors

6.3

(0.25)

BNC connectors

154.4 (6.08)

Figure 1-1: AFG3000 Series dimensions

482.6

(19.00)

465.5

37.3

(1.47)

(6.94)

176.2

101.6 (4.00)

(18.32)

Figure 1-2: RM3100 Rackmount dimensions

36.8

(1.45)

5.1

(0.20)

37.3

(1.47)

101.6 (4.00)

All dimensions are shown in mm and (in).

44.4

(1.75)

25.4

(1.00)

Front

154.3 (6.08)

AFG3000 Series Arbitrary/Function Generators Service Manual 1-11

Specifications

1-12 AFG3000 Series Arbitrary/Function Generators Service Manual

Operating Information

Operating Basics

This section provides installation and operating information that is necessary for service.

General Features

The following table and bulleted list describe the general features of AFG3000 Series Arbitrary/Function Generators.

Table 2-1: General features

Feature AFG3021 AFG3022 AFG3101 AFG3102 AFG3251 AFG3252

Channel 121212

Sine 25 MHz 100 MHz 240 MHz

Pulse / Square 12.5 MHz 50 MHz 120 MHz

Ramp / Gaussian 250 kHz 1 MHz 2.4 MHz

Arbitrary

Waveform Length 2 to 65,536 2 to 131,072 2 to 131,072

Sample Rate

Waveform Length ≤ 16384

250 MS/s

1 GS/s

2 GS/s

16384 < Waveform Length

Resolution 14 bits 14 bits 14 bits

Amplitude 10 V

Display Monochrome Color Color Color

Interface USB USB, LAN, GPIB USB, LAN, GPIB

 Three functions integrated into one generator

 Ground isolation

 Synchronous operation

 USB memory interface

 ArbExpress Software

 Context-sensitive Help system

250 MS/s

p-p

 25 MHz to 240 MHz Function Generator

 12.5 MHz to 120 MHz Pulse Generator

 14 bits Arbitrary Waveform Generator

250 MS/s

10 V

p-p

250 MS/s

p-p

AFG3000 Series Arbitrary/Function Generators Service Manual 2-1

Operating Basics

Installation

Operating Requirements

Environmental

Use the following information to safely install your instrument.

329.6 mm (12.98 in)

AFG

3102

USB

Memory

DUAL CHANNEL ARBITRARY/FUNCTION GENERATOR

1GS/s 100MHz

View

Sine

Square

Ramp

Pulse

Arb

Output

Run ModeFunction

Continuous Modulation

Frequency/Period Amplitude/High

Phase Delay

Leading/TrailingDuty/Width

Edit

Utility

Save RecallMore...

Channel

Ch2

Ch1

Sweep Burst

Offset/Low

Help

Default

156.3 mm (6.16 in)

TriggerTrigger

InputOutput Output

Power Supply Requirements

Figure 2-1: Front size

1. Place the instrument on a cart or bench, observing clearance requirements:

 Sides: 50 mm (2 in)

 Rear: 50 mm (2 in)

2. Before operating, ensure that the ambient temperature is between 0 °C and

+50 °C (+32 °F and +122 °F).

CAUTION. To ensure proper cooling, keep both sides of the instrument clear of

obstructions.

Source Voltage and Frequency 100 V to 240 V, 47 Hz to 63 Hz

or 115 V, 360 Hz to 440 Hz

Power Consumption Less than 120 W

2-2 AFG3000 Series Arbitrary/Function Generators Service Manual

Protect Your Instrument from Misuse

Check Input and Output

Connectors

Operating Basics

Avoid Instrument Damage

Output

Input

Do not mistake Output connectors for Input.

Figure 2-2: Output and Input connectors

1. The instrument has both input and output connectors on the front panel.

When connecting a cable, be sure to distinguish the input connector from the output connectors.

The arbitrary/function generator input and output connectors are floating inputs/outputs.

WAR N I N G. To prevent electrical shocks, do not apply voltages in excess of 42 Vpk

to any BNC connector ground or to the chassis ground.

CAUTION. Do not short output pins or apply external voltages to Output

connectors. The instrument may be damaged.

Do not apply excessive inputs over +5 V to Trigger Input connector. The instrument may be damaged.

The instrument will be damaged if a large DC or AC voltage is applied to the output or input connectors. To protect the output circuits, a fuse adapter is provided as an optional accessory. When the instrument is used by students or other inexperienced users, always attach the fuse adapter to the output connectors to avoid damage.

Tektronix part numbers for the fuse adapter are as follows:

Adapter (P/N: 013-0345-00)

0.125 A fuse (P/N: 159-0454-00 (3 each))

Figure 2-3: Fuse adapter

AFG3000 Series Arbitrary/Function Generators Service Manual 2-3

Operating Basics

Floating Ground

Since the common (input and output channel common) of the arbitrary/function generator is electrically isolated from the chassis ground (the instrument chassis and ground line of the AC connector), you can make a floating connection between the instrument and other equipment.

All the signal output connectors are connected to the common ground, and the remote interface connector is connected to the chassis ground.

CAUTION. When you make a floating connection, review the following

precautions:

The maximum rated voltage between the chassis ground and common ground is 42 V and common ground goes over 42 V

(DC + peak AC). When the potential voltage between the chassis ground

p-p

, the internal protective circuit will be

p-p

activated to protect the circuits. However, higher voltage may cause the internal circuits in the instrument to be damaged.

When a potential voltage exists between the chassis ground and common ground, a short circuit from output to ground causes the instrument internal fuse to open and the output is stopped. If the fuse opens, you need to contact your local Tektronix Service Support.

When a potential voltage exists between the common ground and chassis ground, short-circuiting between them may lead to excessive current flow and the internal or external circuits may be damaged.

Common ground

Chassis ground

Figure 2-4: Grounding equivalent circuit

2-4 AFG3000 Series Arbitrary/Function Generators Service Manual

Protect Your DUT

Operating Basics

Use care when you connect the instrument Channel Output to your DUT (device under test). To avoid damage to your DUT, the following preventive measures are provided. Follow these steps to set the limit values for high level and low level.

1. Push the front-panel Top Menu button. The Output Menu is displayed at the bottom of the bezel menu. Select Output Menu.

2. In this example, High Limit is set to 5.000 V, and Low Limit is set to –5.000 V.

3. Push the Limit bezel button.

4. Select High Limit. Use numeric keys or the general purpose knob to enter a

value. Enter 50 mV for High Limit, and -50 mV for Low Limit.

5. Push the front-panel Sine button to display the waveform parameter. Confirm that High and Low voltage levels were changed. You cannot enter any values greater than 50 mV for High level.

NOTE. When you set limit values using Output Menu, a level indicator is displayed

at left end of graph area. Refer to Screen Interface on page 2-10 for the level indicator.

AFG3000 Series Arbitrary/Function Generators Service Manual 2-5

Operating Basics

120 VA

Powering the Instrument On and Off

Power On

1. Insert the AC power cord into the power receptacle on the rear panel.

Power Off

DUAL CHANNEL

AFG

3102

ARBITRARY/FUNCTION GENERATOR

USB

Memory

1GS/s 100MHz

View

Sine

Square

Ramp

Pulse

Arb

Output

Run ModeFunction

Continuous Modulation

Frequency/Period Amplitude/High

Phase Delay

Leading/TrailingDuty/Width

Edit

Utility

Save RecallMore...

Channel

Ch2

Ch1

Sweep Burst

Offset/Low

Help

Default

TriggerTrigger

InputOutput Output

2. Use the front-panel power button to power on the instrument.

Wait until the front panel display shows that all power-on self tests passed.In this example, High Limit is set to 5.000 V, and Low Limit is set to –5.000 V.

NOTE. You can select the instrument settings, Default settings or Last powered-off

settings, which are restored when you power on the instrument. Use the Utility menu to change the settings.

DUAL CHANNEL

AFG

3102

ARBITRARY/FUNCTION GENERATOR

USB

Memory

1GS/s 100MHz

View

Sine

Square

Ramp

Pulse

Arb

Output

Run ModeFunction

Continuous Modulation

Frequency/Period Amplitude/High

Phase Delay

Leading/TrailingDuty/Width

Edit

Utility

Save RecallMore...

Channel

Ch2

Ch1

Sweep Burst

Offset/Low

Help

Default

TriggerTrigger

InputOutput Output

1. Use the front-panel power button to power off the instrument.

2-6 AFG3000 Series Arbitrary/Function Generators Service Manual

Self Test and Self Calibration

The arbitrary/function generator performs a limited set of hardware tests at power-on. You can also perform the manual diagnostics and/or self calibration using the Utility menu.

1. Push the front-panel Utility button.

2. Push the -more- bezel button.

Operating Basics

3. Push the Diagnostics/Calibration bezel button.

4. The Diagnostics/Calibration execution menu is displayed.

To execute self calibration, push the Execute Calibration bezel button. To execute the instrument diagnostics, push the Execute Diagnostics bezel button.

CAUTION. Do not power off the instrument while executing self calibration. The

calibration data may be damaged/ lost.

NOTE. Before executing self calibration, ensure that the ambient temperature is

between +20 °C and +30 °C (+68 °F to +86 °F).

Allow a 20 minute warm-up period prior to executing self calibration.

AFG3000 Series Arbitrary/Function Generators Service Manual 2-7

Operating Basics

Getting Acquainted with Your Instrument

Front Panel Overview

The front panel is divided into easy-to-use functional areas. This section provides you with a quick overview of the front panel controls and the screen interface. The following figure shows the front panel of the dual-channel model.

Top Menu button

Bezel menu buttons

Function buttons

DUAL CHANNEL

AFG

3102

ARBITRARY/FUNCTION GENERATOR

USB

Memory

USB connector

Power On/Off switch

1GS/s 100MHz

View

View button

Sine

Square

Ramp

Pulse

Arb

Output

Run ModeFunction

Continuous Modulation

Frequency/Period Amplitude/High

Offset/Low

Phase Delay

Leading/TrailingDuty/Width

Edit

Utility

Save RecallMore...

Channel

Ch2

Ch1

Sweep Burst

Shortcut buttons

Numeric keypad

Help

Default

TriggerTrigger

InputOutput Output

Trigger Input connector

Trigger Output connector

Menu buttons

CH1 and CH2 Output connectors

Figure 2-5: Front panel controls

2-8 AFG3000 Series Arbitrary/Function Generators Service Manual

Operating Basics

120

Rear Panel

The following illustration shows the rear panel connectors for the instrument.

Security slot

Chassis ground screw

Figure 2-6: Rear panel

EXT REF INPUT. This input is used when synchronizing multiple arbitrary/function

generators or an arbitrary/function generator and another device.

EXT REF OUTPUT. When you want to synchronize multiple AFG3000 series arbitrary/function generators, or synchronize your arbitrary/function generator and another instrument, use the external reference output connector. (Except AFG3021 and AFG3022)

ADD INPUT. The ADD INPUT connector is provided with AFG3101/AFG3102 and AFG3251/AFG3252. This connector lets you add an external signal to the CH1 output signal.

EXT MODULATION INPUT (CH1 and CH2). The CH1 INPUT and CH2 INPUT are independent. The signal input level of these connectors controls modulation depth.

USB. Used to connect a USB controller. (Type B)

LAN. Used to connect the instrument to a network. Connect a 10BASE-T or

100BASE-T cable here. (Except AFG3021/ AFG3022)

GPIB. Used to control the instrument through GPIB commands. (Except AFG3021/AFG3022)

Security Slot. Use a standard laptop computer security cable to secure your instrument to your location.

Chassis Ground Screw. The chassis ground screw is used to ground the instrument. Use a unified coarse screw (#6-32, 6.35 mm length or less).

AFG3000 Series Arbitrary/Function Generators Service Manual 2-9

Operating Basics

Screen Interface

Main display area (Parameter listing

or Graph)

Message display area

Output status

Bezel menu

Level meter

View tab

Figure 2-7: Screen interface

Bezel Menu. When you push a front panel button, the instrument displays the

corresponding menu on the right side of the screen. The menu shows the options that are available when you push the unlabeled bezel buttons directly to the right of the screen. (Some documentation may also refer to the bezel buttons as option buttons, side-menu buttons, or soft keys.)

Main Display Area and View Tab. Pushing the front-panel View button toggles through the view format of the main display area. The view tabs correspond with the current view format. The arbitrary/function generator can display three different screen formats.

Output Status. If the output is set to disable, Output Off message is displayed in this area. When you push the front panel channel output button to enable the output, the message will disappear.

Message Display Area. A message that monitors hardware status such as clock or trigger is displayed in this area.

Level Meter. Amplitude level is displayed. Refer to page 2-5 for setting the high limit and low limit. The following figure describes the level meter.

1. Shows maximum amplitude level of your instrument.

2. Shows the range of high limit and low limit set by the user.

3. Shows the amplitude level that is currently selected. Use the

front-panel power button to power off the instrument.

2-10 AFG3000 Series Arbitrary/Function Generators Service Manual

Theory of Operation

This section describes the electrical operation of the AFG3000 Series Arbitrary/Function Generators to the module level. It describes the basic operation of each functional circuit block shown in Figure 3-1. The descriptions for the one and two channel units, and the color and monochrome units are slightly different.

Overview

AFG3000 Series Arbitrary/Function Generators provide six models with different frequency and number of channels. Each model consists of two major sections: the platform section and the generator section. The platform section is common to each model.

The combination of circuit boards in each model is shown in Table 3-1.

Table 3-1: Combination of circuit boards used in each model

Circuit board AFG3021 AFG3022 AFG3101 AFG3102 AFG3251 AFG3252

A11 Generator with Amp 1ch 1

A12 Generator with Amp 2ch 1

A31 Generator 1ch 1

A32 Generator 2ch 1

A41 Generator High 1ch 1

A42 Generator High 2ch 1

A51 Output Amp 1 2

A61 Output Amp 12

A70 CPU without LAN, GPIB 1 1

A72 CPU 1111

A75 Front Panel 111111

A80 1212

A81 Front BNC Insulator 111111

A82 Rear BNC Insulator 111111

AFG3000 Series Arbitrary/Function Generators Service Manual 3-1

Theory of Operation

ADD In (except

AFG302x

Ext Mod

Ch2 In

Ext Ref

Out

(except

FG302

Ext Ref

Ext Mod

CH1 In

BNC Insulator

USB

Generator CH1 & CH2 A12/A32/A42

Generator CH1 A11/A31/A41

Floating Ground

A70/A72 CPU

Memory

Generator

On Chip

Clock

Circuit

Generator

On Chip

Pre Amp

TRIGGER

INPUT

CIRCUIT

Isolator

Fan

Controller

A51/A61

Filter & output

Amplifier

DC offset

Calibration

Circuit

A51/A61

Filter & output

Amplifier

DC offset

Local Regulators

+1.8 V +3.3 V

Tig Out Put

Circuit

Calibration

Circuit

FAN

BNC Insulator A81

CH2

Output

Ext Trig

㪫㫉㫀㪾㪾㪼㫉

㩷㪦㫌㫋

㪚㪟㪈

㪦㫌㫋㫇㫌㫋

GPIB

LAN

Remote

Interface

GPIB &

LAN

Primary Circuit

Safety Ground Area

Power Supply Unit

(MPU, ROM, RAM, etc)

Figure 3-1: AFG3000 Series block diagram

CPU Circuit

+4.3 V

15 V

-15 V +5 V

Local Regulators

+5 V

+3.3 V

+28 V

Inverter

LCD/

Monochrome

Display

A75 Front

Panel Board

USB

Memory

3-2 AFG3000 Series Arbitrary/Function Generators Service Manual

Platform

Theory of Operation

CPU Board (A70/A72)

Front Panel

CPU Circuit: The CPU Circuit contains an MPU, Flash RAM, and DRAM to

control the instrument. The liquid crystal controller and the USB circuit are included in the MPU.

Local Regulators: This regulator stabilizes and supplies +3.3 V and +5.0 V for the logic circuit.

Remote Interface: The A72 board contains a GPIB and LAN driver circuit. The A70 board installed in the AFG3021 and AFG3022 does not contain the GPIB and LAN driver circuit.

Fan Controller: This circuit controls the speed of the fan.

Primary Circuit: Contains the power switch and the filter circuit.

Signal I/O Circuit: The Reference Clock Input/Output and the Modulation Input

signals are transmitted to the Generator section through this board.

The Front Panel controls a rubber button matrix, LED, a buzzer, and a rotary encoder.

Power Supply

LCD

Fan

BNC Insulator Board

(A81/ A82)

AFG3000 Series Arbitrary/Function Generators Service Manual 3-3

The power supply module provides +4.3 V, ±15 V, and +5 V to the circuit. This power supply module accepts the input voltage within the range of 250 VAC from 90 VAC.

The display is a color/monochrome Quarter VGA (320 x 240) STN LCD display. The high voltage power for LCD is supplied through the inverter. A monochrome display is used in the AFG3021.

A 90 mm by 90 mm size, DC 12 V type fan. It is driven by fan controller on the CPU board.

These boards insulate the I/O signal from the chassis. The A81 board is used for the rear panel connectors and the A82 board is used for the front panel connectors.

Theory of Operation

Generator section

Generator with Amp Board

(A11/A12)

Isolator: Transmit the serial control signal from the CPU board to the following

circuits with electrical insulation.

Clock Circuit: Generates a 1 GHz high-speed clock necessary for the signal generation from a 10 MHz reference clock by PLL. This circuit has a function of selecting the reference signal source as well.

GoC ASIC: GoC (Generator on Chip) ASIC is a CMOS waveform synthesis IC which includes 2 GS/s DA, Direct Digital Synthesis, waveform SRAM 128 K, x8 MUX, Modulation, Burst and Sweep. So GoC manages most of the generator section.

Tri g g er C ircu i t: Receives an External Trigger input signal, executes the level conversion, then supplies the level converted trigger signal to the GoC ASIC.

Pre-Amplifier Circuit: Converts the differential output signal of the GoC to single ended output, then supplies the single ended output to the Output Amplifier through the Attenuator.

Output Amplifier: The output of the pre-amplifier is amplified and output. LPF is used when a sine wave is output.

Trig Out Circuit: Sync Out signal from GoC ASIC is level converted to Trigger Out.

ADC: Modulation by an external source is performed by digitally sampling the

external input from the Ext Modulation Input connector.

Local Regulator: Supplies the necessary +1.8 V, +3.3 V, +15 V, and -15 V power.

On/Off Relay: On/Off of the output signal.

Calibration Circuit: DC Calibration of the output signal is done by a 16 bit AD

Converter.

Generator with Amp Board

(A31/A32/A41/A42)

3-4 AFG3000 Series Arbitrary/Function Generators Service Manual

The A31/A32/A41/A42 boards are the same as the A11/A12 boards except they have a different Output Amplifier board.

Theory of Operation

Output Amp Board

(A51/A61)

Output Amplifier: Amplifying the output of the pre-amplifier with the DC offset.

Output Filter: LPF is used when a sine wave is output.

AFG3000 Series Arbitrary/Function Generators Service Manual 3-5

Theory of Operation

3-6 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

Two types of Performance Verification procedures can be performed on this product: Self Tests and Performance Tests. You may not need to perform all of these procedures, depending on what you want to accomplish.

 To quickly confirm that the AFG3000 Series Arbitrary/Function Generators

are operating properly, complete the Self Tests which begin on page 4-1.

Advantage: These procedures require minimal time to perform, and test the internal hardware of the AFG3000 Series Arbitrary/Function Generators.

 To further check functionality and proper calibration, first complete the Self

Tests; then complete the Performance Tests beginning on page 4-3.

Advantages: These procedures add direct checking of warranted specifications. These procedures require suitable test equipment and more time to execute. (Refer to Table 4-2 Test equipment on page 4-4)

Self Tests

There are two types of tests in this section that provide a quick way to confirm basic functionality and proper adjustment:

Diagnostics

 Diagnostics

 Calibration (you must perform this calibration before the performance tests.)

These procedures use internal diagnostics to verify that the instrument passes the internal circuit tests, and calibration routines to check and adjust the instrument internal calibration constants.

This procedure uses internal routines to verify that the instrument is operating correctly.

Equipment required None

Prerequisites

Do the following steps to run the internal routines that confirm basic functionality and proper adjustment:

 Power on the instrument and allow a 20 minute warm-up before

doing this procedure.

 The instrument must be operating at an ambient temperature

between +0 °C and +50 °C.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-1

Performance Verification

1. Select Diagnostics in the Utility menu:

Utility (front-panel) > -more- (bezel) > Diagnostics/Calibration > Execute Diagnostics

2. Wait until the test is completed.

3. Verify passing of the diagnostics.

If the diagnostics completes without finding any problems, the message “PASSED” is displayed.

When an error is detected during diagnostic execution, the instrument displays an error code. Error codes are described in Error codes on page 6-30.

4. Press any front panel button to exit the diagnostics.

Calibration

This procedure uses internal routines to verify that the instrument is operating correctly.

Equipment required None

Prerequisites

 Power on the instrument and allow a 20 minute warm-up before

doing this procedure.

 An ambient temperature is between +20 °C and +30 °C.

Do the following steps to run the internal routines that confirm basic functionality and proper adjustment:

1. Select Diagnostics in the Utility menu;

Utility (front-panel) > -more- (bezel) > Diagnostics/Calibration > Execute Calibration

2. Wait until the test is completed.

3. Verify passing of the calibration.

If the calibration completes without any problems, the message “PASSED” is displayed.

When an error is detected during calibration execution, the instrument displays an error code. Error codes are described in Error Codes on page 6-30.

4. Press any front panel button to exit the diagnostics.

NOTE. Do not turn off the power while executing calibration. If the power is turned

off during calibration, data stored in internal nonvolatile memory may be lost.

4-2 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

Performance Tests

The Performance Tests include functional tests, such as the interface functional test, in this manual.

 The Functional Tests verify the functions; they verify that the AFG3000 Series

Arbitrary/Function Generators features operate. They do not verify that they operate within limits.

 The Performance Tests verify that the AFG3000 Series Arbitrary/Function

Generators performs as warranted. The Performance Tests check all the characteristics that are designated as checked in Specifications. (The characteristics that are checked appear with a ✔ in Specifications.)

Table 4-1: Performance test items

Titles Test items Reference page

Frequency/Period Test Internal clock output frequency accuracy page 4-19

Amplitude Test Amplitude accuracy page 4-20

DC Offset Test Amplitude accuracy page 4-22

AC Flatness Test AC Flatness page 4-24

Harmonic Distortion Test Harmonic Distortion page 4-26

THD (Total Harmonic Distortion) Test Total Harmonic Distortion page 4-28

Spurious Test Spurious page 4-30

Rise-Fall Time Test Rise-Fall Time page 4-33

Performance Conditions

The tests in this section comprise an extensive, valid confirmation of performance and functionality when the following requirements are met:

 The cabinet covers must be on the AFG3000 Series.

 The instrument must have been performed and passed the procedures under

calibration and diagnostics.

 The instrument must have been calibrated/adjusted at an ambient temperature

between +20

 The instrument must be operating at an ambient temperature between +0 °C

and +50

 The instrument must have had a warm-up period of at least 20 minutes.

°C and +30 °C.

°C.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-3

Performance Verification

Equipment Required

Table 4-2 lists the required equipment used to complete the performance tests.

Table 4-2: Test equipment

Description Minimum requirements Recommended equipment Purpose

1. Digital Multi Meter (DMM) AC volts, true rms, AC coupled Accuracy:

DC volts Accuracy: 50 ppm, resolution 100µV

Resistance Accuracy:

2. Power Meter 100 kHz to 250 MHz 1 µW to 100 mW (-30 dBm to +20 dBm) Accuracy: 0.02 dB Resolution: 0.01 dB

3. Power Head 100 kHz to 250 MHz 1 µW to 100 mW (-30 dBm to +20 dBm)

4. Frequency Counter Accuracy: 0.01ppm Phase measurement

5. Oscilloscope 1 GHz Bandwidth 50 Ω input termination

6. Spectrum Analyzer 20 kHz to 1.25 GHz Tektronix RSA3303A Checks output signals.

7. BNC Coaxial Cable

(3 required)

8. BNC terminator 50 Ω,

9. Attenuator (2 required)

10. Adapter Dual-Banana

Plug

11. Adapter BNC(fe)-N(ma) BNC (female) to N (male) Tektronix part number

50 Ω, male to male BNC connector, 91 cm

50 Ω, x10, BNC Tektronix part number

BNC (female) to dual banana Tektronix part number

± 0.1% to 1 kHz

± 0.05 Ω

±1Ω, 2W, DC to 1GHz, BNC Tektronix part number

Agilent 3458A Measures voltage. Used in

multiple procedures.

R&S NRVS Measures voltage. Used in

multiple procedures.

R&S NRV-Z5 Measures voltage. Used in

multiple procedures.

Agilent 53132A Checks clock frequency.

Tektronix TDS5104B Checks output signals. Used in

multiple procedures.

Harmonics Spurious.

Tektronix part number 012-0482-00

011-0049-02

011-0059-03

103-0090-00

103-0045-00

Signal interconnection

Signal termination

Signal attenuation

Signal interconnection to a DMM

Signal interconnection to a Spectrum Analyzer

4-4 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

Test Record

Photocopy this test record and use to record the performance test results for your AFG3000 Series Arbitrary/Function Generators. Excel spreadsheet Test record with embedded calculation formulas is also available in standard accessory document CD P/N 063-3828-xx.

AFG3000 Series Performance

Instrument Serial Number: Certificate Number:

Temperature: RH %:

Date of Calibration: Technician:

Test Record

AFG3000 Series Performance Test Record

Minimum

Frequency

Sine at 1.000000 MHz 0.999999 MHz 1.000001 MHz

Pulse at 1.000000 MHz 0.999999 MHz 1.000001 MHz

Amplitude

Test result Maximum

AFG302X, AFG310X CF = 2 / (1 + 50 Ω / Measurement Ω) =

CH1Amplitude

30.0 mVrms at 1.00 kHz (30.0 × CF - 0.654) mVrms (30.0 × CF + 0.654) mVrms

300.0 mVrms at 1.00 kHz (300.0 × CF - 3.35) mVrms (300.0× CF + 3.35) mVrms

800.0 mVrms at 1.00 kHz (800.0 × CF - 8.35) mVrms (800.0 × CF + 8.35) mVrms

1.500 Vrms at 1.00 kHz (1.500 × CF - 0.0154) Vrms (1.500 × CF + 0.0154) Vrms

2.000 Vrms at 1.00 kHz (2.000 × CF - 0.0204) Vrms (2.000 × CF + 0.0204) Vrms

2.500 Vrms at 1.00 kHz (2.500 × CF - 0.0254) Vrms (2.500 × CF + 0.0254) Vrms

3.500 Vrms at 1.00 kHz (3.500 × CF - 0.0354) Vrms (3.500 × CF + 0.0354) Vrms

CH2 Amplitude

30.0 mVrms at 1.00 kHz (30.0 × CF - 0.654) mVrms (30.0 × CF + 0.654) mVrms

300.0 mVrms at 1.00 kHz (300.0 × CF - 3.35) mVrms (300.0× CF + 3.35) mVrms

800.0 mVrms at 1.00 kHz (800.0 × CF - 8.35) mVrms (800.0 × CF + 8.35) mVrms

1.500 Vrms at 1.00 kHz (1.500 × CF - 0.0154) Vrms (1.500 × CF + 0.0154) Vrms

2.000 Vrms at 1.00 kHz (2.000 × CF - 0.0204) Vrms (2.000 × CF + 0.0204) Vrms

2.500 Vrms at 1.00 kHz (2.500 × CF - 0.0254) Vrms (2.500 × CF + 0.0254) Vrms

3.500 Vrms at 1.00 kHz (3.500 × CF - 0.0354) Vrms (3.500 × CF + 0.0354) Vrms

AFG3000 Series Arbitrary/Function Generators Service Manual 4-5

Performance Verification

AFG3000 Series Performance Test Record (cont.)

Minimum

Amplitude

AFG325X CF = 2 / (1 + 50 Ω / Measurement Ω) =

CH1 Amplitude

0.030 Vrms at 1.00 kHz (30.0 × CF - 0.654) mVrms (30.0 × CF + 0.654) mVrms

0.300 Vrms at 1.00 kHz (300.0 × CF - 3.35) mVrms (300.0× CF + 3.35) mVrms

0.800 Vrms at 1.00 kHz (800.0 × CF - 8.35) mVrms (800.0 × CF + 8.35) mVrms

1.500 Vrms at 1.00 kHz (1.500 × CF - 0.0154) Vrms (1.500 × CF + 0.0154) Vrms

CH2 Amplitude

30.0 mVrms at 1.00 kHz (30.0 × CF - 0.654) mVrms (30.0 × CF + 0.654) mVrms

300.0 mVrms at 1.00 kHz (300.0 × CF - 3.35) mVrms (300.0× CF + 3.35) mVrms

800.0 mVrms at 1.00 kHz (800.0 × CF - 8.35) mVrms (800.0 × CF + 8.35) mVrms

1.500 Vrms at 1.00 kHz (1.500 × CF - 0.0154) Vrms (1.500 × CF + 0.0154) Vrms

DC Offset

AFG302X, AFG310X CF = 2 / (1 + 50 Ω / Measurement Ω) =

CH1 DC Offset

Test result Maximum

+5.000 Vdc (+5.000 × CF - 0.055) Vdc (+5.000 × CF + 0.055 Vdc

0.000 Vdc -0.005 Vdc +0.005 Vdc

-5.000 Vdc (-5.000 × CF - 0.055) Vdc (-5.000 × CF + 0.055) Vdc

CH2 DC Offset

+5.000 Vdc (+5.000 × CF - 0.055) Vdc (+5.000 × CF + 0.055) Vdc

0.000 Vdc -0.005 Vdc +0.005 Vdc

-5.000 Vdc (-5.000 × CF - 0.055) Vdc (-5.000 × CF + 0.055) Vdc

AFG325X CF = 2 / (1 + 50 Ω / Measurement Ω) =

CH1 DC Offset

+2.500 Vdc (+2.500 × CF - 0.030) Vdc (+2.500 × CF + 0.030 Vdc

0.000 Vdc -0.005 Vdc +0.005 Vdc

-2.500 Vdc (-2.500 × CF - 0.030) Vdc (-2.500 × CF + 0.030) Vdc

CH2 DC Offset

+2.500 Vdc (+2.500 × CF - 0.030) Vdc (+2.500 × CF + 0.030) Vdc

0.000 Vdc -0.005 Vdc +0.005 Vdc

-2.500 Vdc (-2.500 × CF - 0.030) Vdc (-2.500 × CF + 0.030) Vdc

4-6 AFG3000 Series Arbitrary/Function Generators Service Manual

AFG3000 Series Performance Test Record (cont.)

Performance Verification

Minimum

AC Flatness

AFG302X

CH1 AC Flatness

Frequency 100.00 kHz (Ampl: +4.0 dBm)

Frequency 500.00 kHz Reference - 0.15 dB dB Reference + 0.15 dB

Frequency 1.00 MHz Reference - 0.15 dB dB Reference + 0.15 dB

Frequency 5.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

Frequency 15.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

Frequency 25.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

CH2 AC Flatness

Frequency 100.00 kHz (Ampl: +4.0 dBm)

Frequency 500.00 kHz Reference - 0.15 dB dB Reference + 0.15 dB

Frequency 1.00 MHz Reference - 0.15 dB dB Reference + 0.15 dB

Frequency 5.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

---------- dB ( = Reference) ----------

Test result Maximum

Frequency 15.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

Frequency 25.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

AFG3000 Series Arbitrary/Function Generators Service Manual 4-7

Performance Verification

AFG3000 Series Performance Test Record (cont.)

Minimum

AC Flatness

AFG310X

CH1 AC Flatness

Frequency 100.00 kHz (Ampl: +4.0 dBm)

Frequency 1.00 MHz Reference - 0.15 dB dB Reference + 0.15 dB

Frequency 5.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

Frequency 25.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

Frequency 50.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

Frequency 100.0 MHz Reference - 0.50 dB dB Reference + 0.50 dB

CH2 AC Flatness

Frequency 100.00 kHz (Ampl: +4.0 dBm)

Frequency 1.00 MHz Reference - 0.15 dB dB Reference + 0.15 dB

Frequency 5.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

Frequency 25.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

---------- dB( = Reference) ----------

Test result Maximum

Frequency 50.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

Frequency 100.0 MHz Reference - 0.50 dB dB Reference + 0.50 dB

4-8 AFG3000 Series Arbitrary/Function Generators Service Manual

AFG3000 Series Performance Test Record (cont.)

Performance Verification

Minimum

AC Flatness

AFG325X

CH1 AC Flatness

Frequency 100.00 kHz (Ampl: +4.0 dBm)

Frequency 1.00 MHz Reference - 0.15 dB dB Reference + 0.15 dB

Frequency 5.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

Frequency 25.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

Frequency 50.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

Frequency 100.0 MHz Reference - 1.00 dB dB Reference + 1.00 dB

Frequency 150.00 MHz Reference - 1.00 dB dB Reference + 1.00 dB

Frequency 240.0 MHz Reference - 2.00 dB dB Reference + 2.00 dB

CH2 AC Flatness

Frequency 100.00 kHz (Ampl: +4.0 dBm)

Frequency 1.00 MHz Reference - 0.15 dB dB Reference + 0.15 dB

---------- dB( = Reference) ----------

Test result Maximum

Frequency 5.00 MHz Reference - 0.30 dB dB Reference + 0.30 dB

Frequency 25.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

Frequency 50.00 MHz Reference - 0.50 dB dB Reference + 0.50 dB

Frequency 100.0 MHz Reference - 1.00 dB dB Reference + 1.00 dB

Frequency 150.00 MHz Reference - 1.00 dB dB Reference + 1.00 dB

Frequency 250.0 MHz Reference - 2.00 dB dB Reference + 2.00 dB

AFG3000 Series Arbitrary/Function Generators Service Manual 4-9

Performance Verification

AFG3000 Series Performance Test Record

Harmonic Distortion Fundamental

= reference

AFG302X Spectrum Analyzer reading

Sine 20 kHz 20 kHz 40 kHz 60 kHz 80 kHz 100 kHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -60 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -60 dBc

Sine 100 kHz 100 kHz 200 kHz 300 kHz 400 kHz 500 kHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -60 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -60 dBc

Sine 1 MHz 1 MHz 2 MHz 3 MHz 4 MHz 5 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -50 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

2nd 3rd 4th 5th Limit

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -50 dBc

Sine 25MHz 25 MHz 50 MHz 75 MHz 100 MHz 125 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -40 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -40 dBc

4-10 AFG3000 Series Arbitrary/Function Generators Service Manual

AFG3000 Series Performance Test Record (cont.)

Performance Verification

Harmonic Distortion Fundamental

= reference

AFG310X Spectrum Analyzer reading

Sine 1 MHz 1 MHz 2 MHz 3 MHz 4 MHz 5 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -50 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -50 dBc

Sine 5 MHz 5 MHz 10 MHz 15 MHz 20 MHz 25 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

Sine 25MHz 25 MHz 50 MHz 75 MHz 100 MHz 125 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

2nd 3rd 4th 5th Limit

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

Sine 100 MHz 100 MHz 200 MHz 300 MHz 400 MHz 500 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

AFG3000 Series Arbitrary/Function Generators Service Manual 4-11

Performance Verification

AFG3000 Series Performance Test Record (cont.)

Harmonic Distortion Fundamental

= reference

AFG325X Spectrum Analyzer reading

Sine 1 MHz 1 MHz 2 MHz 3 MHz 4 MHz 5 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -50 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -50 dBc

Sine 5 MHz 5 MHz 10 MHz 15 MHz 20 MHz 25 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -37 dBc

Sine 100 MHz 100 MHz 200 MHz 300 MHz 400 MHz 500 MHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -30 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

2nd 3rd 4th 5th Limit

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -30 dBc

Sine 240 MHz 240 MHz 480 MHz 720 MHz 960 MHz 1.20 GHz

CH1 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -30 dBc

CH2 Harmonic Distortion dBc dBc dBc dBc dBc

reading - reference 0 dBc dBc dBc dBc dBc Nth - reference < -30 dBc

4-12 AFG3000 Series Arbitrary/Function Generators Service Manual

AFG3000 Series Performance Test Record

Total Harmonic Distortion (THD)

AFG3xxxx Spectrum Analyzer reading

Performance Verification

Fundamental

2nd 3rd 4th 5th 6th 7th

= reference

Sine 20.0 kHz 20 kHz 40 kHz 60 kHz 80 kHz 100 kHz 120 kHz 140 kHz

CH1 reading (dBm) A

reading - reference (A

- A1) (dBc) B1= 0 B2=B

Bn/20

= 10

= A2=A

C1= 1 C2=C

Limit

< 0.2%

∑

THD

n2=

-----------------------=

CH2 reading (dBm) A1= A2= A3= A4= A5= A6= A7=

reading - reference (An - A1) (dBc) B1= 0 B2= B3= B4= B5= B6= B7=

Bn/20

= 10

C1= 1 C2= C3= C4= C5= C6= C7=

Limit

< 0.2%

∑

THD

n2=

-----------------------=

AFG3000 Series Arbitrary/Function Generators Service Manual 4-13

Performance Verification

AFG3000 Series Performance Test Record

Spurious

AFG302X Spectrum Analyzer Measurement

Frequency Center

Frequency

CH1 Spurious

Sine 100 kHz 10 MHz /

300 MHz

Sine 1.00 MHz 10 MHz /

300 MHz

Sine 10.00 MHz 10 MHz /

300 MHz

Sine 25.00 MHz 10 MHz /

300 MHz

CH2 Spurious

Sine 100 kHz 10 MHz /

300 MHz

Sine 1.00 MHz 10 MHz /

300 MHz

Sine 10.00 MHz 10 MHz /

300 MHz

Sine 25.00 MHz 10 MHz /

300 MHz

Span RBW Spurious Frequency Spurious (Max) Limit

20 MHz / 600 MHz

20 kHz / 20 kHz

MHz MHz

MHz

MHz MHz

MHz

MHz MHz

MHz

dBc dBc

< -60 dBc

< -50 dBc

< -60 dBc

< -50 dBc

4-14 AFG3000 Series Arbitrary/Function Generators Service Manual

AFG3000 Series Performance Test Record

Spurious

AFG310X Spectrum Analyzer Measurement

Performance Verification

Frequency Center

Frequency

CH1 Spurious

Sine 100 kHz 10 MHz

300 MHz

Sine 1.00 MHz 10 MHz

300 MHz

Sine 10.00 MHz 10 MHz

300 MHz

Sine 25.00 MHz 10 MHz

300 MHz

Sine 50.00 MHz 10 MHz

300 MHz

Sine 100.00 MHz 10 MHz

300 MHz

CH2 Spurious

Sine 100 kHz 10 MHz

300 MHz

Sine 1.00 MHz 10 MHz

300 MHz

Span RBW Spurious Frequency Spurious (Max) Limit

20 MHz 600 MHz

20 kHz 20 kHz

MHz MHz

MHz

MHz MHz

MHz

dBc dBc

< -60 dBc

< -50 dBc

< -44 dBc

< -38 dBc

< -60 dBc

< -50 dBc

Sine 10.00 MHz 10 MHz

300 MHz

Sine 25.00 MHz 10 MHz

300 MHz

Sine 50.00 MHz 10 MHz

300 MHz

Sine 100.00 MHz 10 MHz

300 MHz

20 MHz 600 MHz

20 kHz 20 kHz

MHz MHz

MHz

MHz MHz

dBc dBc

< -50 dBc

< -44 dBc

< -38 dBc

AFG3000 Series Arbitrary/Function Generators Service Manual 4-15

Performance Verification

AFG3000 Series Performance Test Record

Spurious

AFG325X Spectrum Analyzer Measurement

Frequency Center

Frequency

CH1 Spurious

Sine 100 kHz 10 MHz

300 MHz

Sine 1.00 MHz 10 MHz

300 MHz

Sine 10.00 MHz 10 MHz

300 MHz

Sine 25.00 MHz 10 MHz

300 MHz

Sine 50.00 MHz 10 MHz

300 MHz

Sine 100.00 MHz 10 MHz

300 MHz

Sine 200.00 MHz 10 MHz

300 MHz

Sine 240.00 MHz 10 MHz

300 MHz

CH2 Spurious

Span RBW Spurious Frequency Spurious (Max) Limit

20 MHz 600 MHz

20 kHz 20 kHz

MHz

MHz MHz

MHz

MHz MHz

dBc dBc

< -50 dBc

< -47 dBc

< -41 dBc

< -35 dBc

< -29 dBc

< -28 dBc

Sine 100 kHz 10 MHz

300 MHz

Sine 1.00 MHz 10 MHz

300 MHz

Sine 10.00 MHz 10 MHz

300 MHz

Sine 25.00 MHz 10 MHz

300 MHz

Sine 50.00 MHz 10 MHz

300 MHz

Sine 100.00 MHz 10 MHz

300 MHz

Sine 200.00 MHz 10 MHz

300 MHz

Sine 240.00 MHz 10 MHz

300 MHz

20 MHz 600 MHz

20 kHz 20 kHz

MHz MHz

MHz

MHz MHz

MHz

MHz MHz

dBc dBc

< -50 dBc

< -47 dBc

< -41 dBc

< -35 dBc

< -29 dBc

< -28 dBc

4-16 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

AFG3000 Series

Performance Test Record

Minimum Test result Maximum

Rise-Fall Time

AFG302X

CH1 Rise Time Amplitude: 1.0 V

Fall Time Amplitude: 1.0 V

Rise Time Amplitude: 10.0 V

Fall Time Amplitude: 10.0 V

CH2 Rise Time Amplitude: 1.0 V

Fall Time Amplitude: 1.0 V

Rise Time Amplitude: 10.0 V

Fall Time Amplitude: 10.0 V

- - - - - 18 ns

AFG310X

CH1 Rise Time Amplitude: 1.0 V

Fall Time Amplitude: 1.0 V

Rise Time Amplitude: 10.0 V

Fall Time Amplitude: 10.0 V

CH2 Rise Time Amplitude: 1.0 V

Fall Time Amplitude: 1.0 V

Rise Time Amplitude: 10.0 V

Fall Time Amplitude: 10.0 V

- - - - - 5 ns

AFG3000 Series Arbitrary/Function Generators Service Manual 4-17

Performance Verification

AFG3000 Series Performance Test Record (cont.)

Minimum Test result Maximum

AFG325X

CH1 Rise Time Amplitude: 1.0 V

Fall Time Amplitude: 1.0 V

Rise Time Amplitude: 5.0 V

Fall Time Amplitude: 5.0 V

CH2 Rise Time Amplitude: 1.0 V

Fall Time Amplitude: 1.0 V

Rise Time Amplitude: 5.0 V

Fall Time Amplitude: 5.0 V

- - - - - 2.5 ns

4-18 AFG3000 Series Arbitrary/Function Generators Service Manual

Frequency/Period Test

Performance Verification

This test verifies the frequency accuracy of the arbitrary/function generator. All output frequencies are derived from a single generated frequency. Only one frequency point of channel 1 is required to be checked.

1. Connect the arbitrary/function generator to the frequency counter as shown in

Figure 4-1.

AFG3000 Series

CH1 Output

50 Ω BNC coaxial cables

Frequency counter

Inputs

Figure 4-1: Frequency/Period tests

2. Push the Default front-panel button and OK menu button to recall the

arbitrary/function generator default setup.

3. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 1.000000 MHz Frequency/Period (front)

Amplitude 1.00 Vpp Amplitude/High (front)

Channel 1 Output On On (front)

4. Check that reading of the Frequency Counter is between 0.999999 MHz and

1.000001 MHz.

5. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Pulse Pulse (front)

6. Check that reading of the frequency counter is between 0.999999 MHz and

1.000001 MHz.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-19

Performance Verification

Amplitude Test

This test verifies the amplitude accuracy of the arbitrary/function generator. All output amplitudes are derived from a combination of attenuators and 3 dB variable gain. Some amplitude points are checked. This test uses a 50 Ω terminator. It is necessary to know the accuracy of a 50 Ω terminator in advance of this amplitude test. This accuracy is used as a calibration factor.

1. Connect the 50 Ω terminator to the DMM as shown in Figure 4-2 and measure

the register value.

DMM

BNC-Dual banana adapter + 50 Ω terminator

Figure 4-2: 50 ohm terminator accuracy

2. Calculate the 50 Ω calibration factor (CF) from the reading value and record

as follows:

CF (Calibration Factor) = 2 / (1 + 50 Ω / Measurement Ω)

Measurement (reading of the DMM) CF

Ω

Example

50.50 Ω 1.0050 (= 2 / (1 + 50 / 50.50))

49.62 Ω 0.9962 (= 2 / (1 + 50 / 49.62))

3. Connect the arbitrary/function generator to the DMM as shown in Figure 4-3.

Be sure to connect the 50 Ω terminator to the arbitrary/function generator Output connector side.

AFG3000 series

DMM

CH1 Output

50 Ω BNC coaxial cables + 50 Ω terminator

BNC-Dual banana adapter

Figure 4-3: Amplitude tests

4-20 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

4. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 1.000000 kHz Frequency/Period (front)

Amplitude Units V rms

The voltage unit should be matched to that of DMM.

Amplitude 0.030 Vrms Amplitude/High (front)

Channel 1 Output On On (front)

Top Menu > Amplitude/Level Menu > -more> Units > V rms

5. Verify that each amplitude measurement is within the range specified in the

following tables.

AFG302x and AFG310x Measurement Range

Function Frequency Amplitude

Sine 1.000 kHz 30.0 mVrms mVrms (30.0 × CF ± 0.654) mVrms

Sine 1.000 kHz 300.0 mVrms mVrms (300.0 × CF ± 3.35) mVrms

Sine 1.000 kHz 800.0 mVrms mVrms (800.0 × CF ± 8.35) mVrms

Sine 1.000 kHz 1.500 Vrms Vrms (1.500 × CF ± 0.0154) Vrms

Sine 1.000 kHz 2.000 Vrms Vrms (2.000 × CF ± 0.0204) Vrms

Sine 1.000 kHz 2.500 Vrms Vrms (2.500 × CF ± 0.0254) Vrms

Sine 1.000 kHz 3.500 Vrms Vrms (3.500 × CF ± 0.0354) Vrms

AFG325x Measurement Range

Function Frequency Amplitude

Sine 1.000 kHz 30.0 mVrms mVrms (30.0 × CF ± 0.654) mVrms

Sine 1.000 kHz 300.0 mVrms mVrms (300.0 × CF ± 3.35) mVrms

Sine 1.000 kHz 800.0 mVrms mVrms (800.0 × CF ± 8.35) mVrms

Sine 1.000 kHz 1.500 Vrms Vrms (1.500 × CF ± 0.0154) Vrms

6. (AFG3xx2 only) Repeat steps 3 through 5 for the channel 2 output.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-21

Performance Verification

DC Offset Test

This test verifies the DC offset accuracy of the arbitrary/function generator. This test uses a 50 Ω terminator. It is necessary to know the accuracy of a 50 Ω terminator in advance of this test. This accuracy is used for as a calibration factor.

1. Connect the 50 Ω terminator to the DMM as shown in Figure 4-4 and measure

the register value.

DMM

BNC-Dual banana adapter + 50 Ω terminator

Figure 4-4: 50 ohm terminator accuracy

2. Calculate the 50 Ω calibration factor (CF) from the reading value and record

as follows:

CF (Calibration Factor) = 2 / (1 + 50 Ω / Measurement Ω)

Measurement (reading of the DMM) CF

Ω

Example

50.50 Ω 1.0050 (= 2 / (1 + 50 / 50.50))

49.62 Ω 0.9962 (= 2 / (1 + 50 / 49.62))

3. Connect the arbitrary/function generator to the DMM as shown in Figure 4-5.

Be sure to connect the 50 Ω terminator to the arbitrary/function generator Output connector side.

AFG3000 series

CH1 Output

50 Ω BNC coaxial cables + 50 Ω terminator

DMM

BNC-Dual banana adapter

Figure 4-5: DC offset tests

4-22 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

4. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function DC More... (front) > More Waveform Menu > DC

Frequency 1.000000 kHz Frequency/Period (front)

Offset + 5.000 V

+ 2.500 V (AFG325x)

Channel 1 Output On On (front)

Offset/Low (front)

5. Verify that each offset measurement is within the range specified in the

following tables.

AFG302x and AFG310x Measurement Range

Function Offset

DC + 5.000 Vdc Vdc (5.000 × CF ± 0.055) Vdc

DC 0.000 Vdc Vdc ± 0.005 Vdc

DC - 5.000 Vdc Vdc (- 5.000 × CF ± 0.055) Vdc

AFG3251 and AFG3252 Measurement Range

Function Offset

DC + 2.500 Vdc Vdc (2.500 × CF ± 0.030) Vdc

DC 0.000 Vdc Vdc ± 0.005 Vdc

DC - 2.500 Vdc Vdc (- 2.500 × CF ± 0.030) Vdc

6. (AFG3xx2 only) Repeat steps 3 through 5 for the channel 2 output.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-23

Performance Verification

AC Flatness Test

This test verifies the flatness of a sine wave to 100 kHz sine wave.

1. Connect the arbitrary/function generator to the power meter with a power head

as shown in Figure 4-6.

AFG3000 series

CH1 Output

Power head

50 Ω BNC coaxial cables

Power met er

Figure 4-6: AC flatness tests

2. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 100.0000 kHz Frequency/Period (front)

Amplitude Units dBm TopMenu > Amplitude/Level Menu > -more- >

Units > dBm

Amplitude + 4.0 dBm Amplitude/High (front)

Channel 1 Output On On (front)

3. Set the frequency of the Power Meter to 100 kHz.

4. Write the Power Meter reading of the 100 kHz sine wave as a reference power

value.

5. Verify that the power measurement at each frequency is within the error

specified in the following tables.

4-24 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

AFG302x Measurement Range

Function Amplitude Frequency (dB) (dB)

Sine + 4.0 dBm 100.00 kHz = Reference - - - - - -

Sine + 4.0 dBm 500.00 kHz Reference ± 0.15

Sine + 4.0 dBm 1.00 MHz Reference ± 0.15

Sine + 4.0 dBm 5.00 MHz Reference ± 0.30

Sine + 4.0 dBm 15.00 MHz Reference ± 0.30

Sine + 4.0 dBm 25.00 MHz Reference ± 0.50

AFG310x Measurement Range

Function Amplitude Frequency (dB) (dB)

Sine + 4.0 dBm 100.00 kHz = Reference - - - - - -

Sine + 4.0 dBm 1.00 MHz Reference ± 0.15

Sine + 4.0 dBm 5.00 MHz Reference ± 0.30

Sine + 4.0 dBm 25.00 MHz Reference ± 0.50

Sine + 4.0 dBm 50.00 MHz Reference ± 0.50

Sine + 4.0 dBm 100.00 MHz Reference ± 0.50

AFG325x Measurement Range

Function Amplitude Frequency (dB) (dB)

Sine + 4.0 dBm 100.00 kHz = Reference - - - - - -

Sine + 4.0 dBm 1.00 MHz Reference ± 0.15

Sine + 4.0 dBm 5.00 MHz Reference ± 0.30

Sine + 4.0 dBm 25.00 MHz Reference ± 0.50

Sine + 4.0 dBm 50.00 MHz Reference ± 0.50

Sine + 4.0 dBm 100.00 MHz Reference ± 1.00

Sine + 4.0 dBm 150.00 MHz Reference ± 1.00

Sine + 4.0 dBm 240.00 MHz Reference ± 2.00

6. (AFG3xx2 only) Repeat steps 3 through 5 for the channel 2 output.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-25

Performance Verification

Harmonics Distortion Test

This test verifies the harmonic distortion using a spectrum analyzer.

1. Connect the arbitrary/function generator to the spectrum analyzer as shown in

Figure 4-7.

Spectrum analyzer (WCA280A)

AFG3000 series

CH1 Output

50 Ω BNC coaxial cable

BNC(Fe)-N(Ma) adapter

Figure 4-7: Harmonic distortion tests

2. Push the Default front-panel button and OK menu button to recall the

arbitrary/function generator default setup.

3. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 20.00 kHz: AFG302x

1.000 MHz: AFG310x

1.000 MHz: AFG325x

Amplitude Units Vpp TopMenu > Amplitude/Level Menu > -more- >

Amplitude 1.00 Vpp Amplitude/High (front)

Channel 1 Output On On (front)

Frequency/Period (front)

Units > Vpp

4. Set up the spectrum analyzer according the frequency setup of the

arbitrary/function generator.

5. Read the signal level in the Fundamental frequency for each signal. Use this

level as a Reference value in step 6.

6. Verify that the differences between the reference level and the signal level in

the frequency of higher-order at each frequency are below the limit specified in the following tables.

4-26 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

AFG302x Spectrum Analyzer Measurement Limit

Frequency Center

Frequency

20.00 kHz 100 kHz 200 kHz 500 Hz 20 kHz 40 kHz 60 kHz 80 kHz 100 kHz < -60 dBc

100.00 kHz 500 kHz 1 MHz 2 kHz 100 kHz 200 kHz 300 kHz 400 kHz 500 kHz < -60 dBc

1.00 MHz 5.00 MHz 10 MHz 20 kHz 1 MHz 2 MHz 3 MHz 4 MHz 5 MHz < -50 dBc

25.00 MHz 125 MHz 250 MHz 20 kHz 25 MHz 50 MHz 75 MHz 100 MHz 125 MHz < -40 dBc

AFG310x Spectrum Analyzer Measurement Limit

Frequency Center

Frequency

1 MHz 5.00 MHz 10 MHz 20 kHz 1 MHz 2 MHz 3 MHz 4 MHz 5 MHz < -50 dBc

5 MHz 10 MHz /

25 MHz

25 MHz 125 MHz 250 MHz 20 kHz 25 MHz 50 MHz 75 MHz 100 MHz 125 MHz < -37 dBc

100 MHz 500 MHz 1 GHz 100 kHz 100 MHz 200 MHz 300 MHz 400 MHz 500 MHz < -37 dBc

Span RBW Fundamental

(= Reference)

Span RBW Fundamental

(= Reference

20 MHz /

50 MHz

20 kHz /

20 kHz

5 MHz 10 MHz 15 MHz 20 MHz 25 MHz < -37 dBc

2nd 3rd 4th 5th Nth - Reference

AFG325x Spectrum Analyzer Measurement Limit

Frequency Center

Frequency

1 MHz 5.00 MHz 10 MHz 20 kHz 1 MHz 2 MHz 3 MHz 4 MHz 5 MHz < -50 dBc

5 MHz 10 MHz /

25 MHz

100 MHz 500 MHz 1 GHz 100 kHz 100 MHz 200 MHz 300 MHz 400 MHz 500 MHz < -30 dBc

240 MHz 625 MHz 1.25 GHz 100 kHz 240 MHz 480 MHz 720 MHz 960 MHz 1.20 GHz < -30 dBc

Span RBW Fundamental

(= Reference

20 MHz /

50 MHz

20 kHz /

20 kHz

5 MHz 10 MHz 15 MHz 20 MHz 25 MHz < -37 dBc

2nd 3rd 4th 5th Nth - Reference

7. (AFG3xx2 only) Repeat steps 2 through 6 for the channel 2 output.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-27

Performance Verification

Total Harmonic Distortion Test

This test verifies the total harmonic distortion (THD) using a spectrum analyzer.

1. Connect the arbitrary/function generator to the spectrum analyzer as shown in

Figure 4-8.

Spectrum analyzer (WCA280A)

AFG3000 series

CH1 Output

50 Ω BNC coaxial cable

BNC(Fe)-N(Ma) adapter

Figure 4-8: Total Harmonic distortion tests

2. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 20.00 kHz Frequency/Period (front)

Amplitude Units Vpp TopMenu > Amplitude/Level Menu > -more- >

Units > Vpp

Amplitude 1.00 Vpp Amplitude/High (front)

Channel 1 Output On On (front)

3. Set up the spectrum analyzer according to the following table:

Center Frequency Span RBW

100 kHz 200 kHz 500 Hz

4. When the THD cannot be measured directly, it is obtained by using the

following calculation:

∑

THD

Measure and record each level (A1 to A7) to the seventh harmonics of the

n2=

-----------------------=

20 kHz sine wave.

4-28 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

6. Calculate the each B

to B7, C1 to C7 value and the THD.

AFG3xxx Measurement

Function Frequency Fundamental

2nd 3rd 4th 5th 6th 7th

= reference

sine 20.00 kHz 20 kHz 40 kHz 60 kHz 80 kHz 100 kHz 120 kHz 140 kHz

reading (dBm) A

reading - reference

= An - A1 (dBc)

= 10

Bn/20

= A2 =A

= 0 B2 =B

C1 = 1 C2 =C

= A4 =A

Limit

THD

∑

n2=

-----------------------=

THD =

< 0.2%

Sample: reading 1.5 dBm -58.5 dBm -58.5 dBm -63.5 dBm -58.5 dBm -63.5 dBm -63.5 dBm

reading - reference 0 -60 dBm -60 dBm -65 dBm -60 dBm -65 dBm -65 dBm

= 1.000 0.001 0.001 0.000562 0.001 0.000562 0.000562

Limit

THD

∑

n2=

-----------------------=

0.1987%

< 0.2%

NOTE. When all the harmonic components are -62dBm or less, the calculation of

THD can be skipped because it is THD<0.2%.

7. Verify that the THD is less than 0.2%.

8. (AFG3xx2 only) Repeat steps 2 through 7 for the channel 2 output.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-29

Performance Verification

Spurious Test

This test verifies the spurious using a spectrum analyzer.

1. Connect the arbitrary/function generator to the spectrum analyzer as shown in

Figure 4-9.

Spectrum analyzer (WCA280A)

AFG3000 series

CH1 Output

50 Ω BNC coaxial cable

BNC(Fe)-N(Ma) adapter

Figure 4-9: Spurious tests

2. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 100.00 kHz Frequency/Period (front)

Amplitude Units Vpp TopMenu > Amplitude/Level Menu > -more- >

Units > Vpp

Amplitude 1.00 Vpp Amplitude/High (front)

Channel 1 Output On On (front)

3. Set the center frequency of the spectrum analyzer to 10 MHz. Other settings

are shown in the following tables.

4. Measure the maximum spurious level other than harmonic distortion of 1 V

sine wave in each frequency.

5. Set the center frequency of the spectrum analyzer to 300 MHz. Other settings

are shown in the following tables.

6. Measure the maximum spurious level other than harmonic distortion of 1 V

sine wave in each frequency.

7. Verify that the spurious signal at each frequency is equal to or less than the

limit specified in the following tables.

4-30 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Verification

8. (AFG3xx2 only) Repeat steps 2 through 7 for the channel 2 output.

AFG302x Spectrum Analyzer Measurement

Frequency Center

Frequency

100.00 kHz 10 MHz 300 MHz

1.00 MHz 10 MHz 300 MHz

10.00 MHz 10 MHz 300 MHz

25.00 MHz 10 MHz 300 MHz

AFG310x Spectrum Analyzer Measurement

Frequency Center

Frequency

100.00 kHz 10 MHz 300 MHz

1.00 MHz 10 MHz 300 MHz

10.00 MHz 10 MHz 300 MHz

25.00 MHz 10 MHz 300 MHz

50.00 MHz 10 MHz 300 MHz

100.00 MHz 10 MHz 300 MHz

Span RBW Spurious

Frequency

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

Span RBW Spurious

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 kHz 20 kHz

Frequency

20 kHz 20 kHz

Spurious

(Max)

MHz MHz

MHz

MHz MHz

MHz

Spurious

(Max)

MHz MHz

MHz

MHz MHz

MHz

MHz MHz

dBc dBc

Limit

< -60 dBc

< -50 dBc

Limit

< -60 dBc

< -50 dBc

< -44 dBc

< -38 dBc

AFG3000 Series Arbitrary/Function Generators Service Manual 4-31

Performance Verification

AFG325x Spectrum Analyzer Measurement

Frequency Center

Frequency

100.00 kHz 10 MHz 300 MHz

1.00 MHz 10 MHz 300 MHz

10.00 MHz 10 MHz 300 MHz

25.00 MHz 10 MHz 300 MHz

50.00 MHz 10 MHz 300 MHz

100.00 MHz 10 MHz 300 MHz

200.00 MHz 10 MHz 300 MHz

240.00 MHz 10 MHz 300 MHz

Span RBW Spurious

Frequency

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 MHz

600 MHz

20 kHz 20 kHz

MHz MHz

MHz

MHz MHz

MHz

MHz MHz

MHz

Spurious

(Max)

dBc dBc

Limit

< -50 dBc

< -47 dBc

< -41 dBc

< -35 dBc

< -29 dBc

< -28 dBc

4-32 AFG3000 Series Arbitrary/Function Generators Service Manual

Rise-Fall time Test

Performance Verification

This test verifies the pulse rise time of the arbitrary/function generator.

1. Connect the arbitrary/function generator to the oscilloscope as shown in

Figure 4-10.

Oscilloscope

AFG3000 series

CH1 Output

50 Ω BNC coaxial cable

CH1 Input

Figure 4-10: Rise-Fall time tests

2. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Square Square (front)

Frequency 10.00 MHz Frequency/Period (front)

Amplitude Units Vpp TopMenu > Amplitude/Level Menu > -more- >

Units > Vpp

Amplitude 1.0 Vpp Amplitude/High (front)

Offset 0.0 V TopMenu > Offset/Low (front)

Channel 1 Output On On (front)

3. Set up the Oscilloscope so the square waveform of 5 division amplitude is

displayed.

4. Verify that the rise/fall time of the square waveform on the oscilloscope at each

amplitude is equal to or less than the limit specified in the following tables. Use 10-90% reference level for rise/fall time measurement.

AFG3000 Series Arbitrary/Function Generators Service Manual 4-33

Performance Verification

Function Frequency Offset Amplitude Vertical Horizontal Limit

Square 10.00 MHz 0.0 V 1.0 V

Square 10.00 MHz 0.0 V 10.0 V

Function Frequency Offset Amplitude Vertical Horizontal Limit

Square 10.00 MHz 0.0 V 1.0 V

Square 10.00 MHz 0.0 V 10.0 V

AFG302x Oscilloscope Measurement

200 mV/div 5 ns/div ≤ 18 ns

200 mV/div

5 ns/div ≤ 18 ns

with x10 attenuator

AFG310x Oscilloscope Measurement

200 mV/div 2 ns/div ≤ 5 ns

200 mV/div

2 ns/div ≤ 5 ns

with x10 attenuator

AFG325x Oscilloscope Measurement

Function Frequency Offset Amplitude Vertical Horizontal Limit

Square 10.00 MHz 0.0 V 1.0 V

Square 10.00 MHz 0.0 V 5.0 V

200 mV/div 1 ns/div ≤ 2.5 ns

1.0 V/div 1 ns/div ≤ 2.5 ns

5. (AFG3xx2 only) Repeat steps 2 through 4 for the channel 2 output.

4-34 AFG3000 Series Arbitrary/Function Generators Service Manual

Adjustment Procedures

This section describes the procedures necessary to manually adjust the AFG3000 Series Arbitrary/Function Generators. Execute each adjustment when you exchange a circuit board.

Purpose

This procedure returns the arbitrary/function generator to compliance with its Warranted Characteristics as listed in Specification section. It can also be used to optimize the performance of the arbitrary/function generator.

Adjustment Interval

Adjustment After Repair

Table 5-1: Adjustments performed after repair

Adjustment AFG3021, AFG3022 AFG3101, AFG3102, AFG3251, AFG3252

A70 CPU A11, A12 Generator A72 CPU A31, A32, A41, A42

Reference ClockXXXX

LF XXX

FlatnessXXXXX

SpuriousXXXXX

Trigger Delay XXXX

Generally, these adjustments should be done every 12 months.

After the removal and replacement of a module due to electrical failure, perform the adjustment procedure in this section. The table below lists the adjustment items that should be performed after repair.

A51, A61 Output

Generator

AFG3000 Series Arbitrary/Function Generators Service Manual 5-1

Adjustment Procedures

Equipment Required

Table 5-2 lists the equipment that is required to complete the adjustment procedures.

Table 5-2: Test equipment

Description Minimum requirements Recommended equipment Purpose

1. Digital Multi Meter (DMM) AC volts, true rms, AC coupled Accuracy: DC volts Accuracy: 50 ppm, resolution 100µV Resistance Accuracy:

2. Power Meter 100 kHz to 250 MHz 1 µW to 100 mW (-30 dBm to +20 dBm) Accuracy: 0.02 dB Resolution: 0.01 dB

3. Power Head 100 kHz to 250 MHz 1 µW to 100 mW (-30 dBm to +20 dBm)

4. Frequency Counter 50 kHz to 5 GHz, Accuracy: 0.01ppm Phase measurement

5. Oscilloscope 1 GHz Bandwidth 50 Ω input termination

6. Spectrum Analyzer 20 kHz to 1.25 GHz Tektronix RSA3303A Checks output signals.

7. BNC Coaxial Cable

(3 required)

8. BNC terminator 50 Ω,

9. Attenuator (2 required)

10. Adapter Dual-Banana

Plug

11. Adapter BNC(fe)-N(ma) BNC (female) to N (male) Tektronix part number

50 Ω, male to male BNC connector, 91 cm

50 Ω, x10, BNC Tektronix part number

BNC (female) to dual banana Tektronix part number

± 0.02% to 1 MHz

± 0.05 Ω

±1 Ω, 2 W, DC to 1 GHz, BNC Tektronix part number

Agilent 3458A Measures voltage. Used in

multiple procedures.

R&S NRVS Measures voltage. Used in

multiple procedures.

R&S NRV-Z5 Measures voltage. Used in

multiple procedures.

Agilent 53132A Checks clock frequency.

Tektronix TDS5104B Checks output signals. Used in

multiple procedures.

Harmonics Spurious.

Tektronix part number 012-0482-00

011-0049-02

011-0059-03

103-0090-00

103-0045-00

Signal interconnection

Signal termination

Signal attenuation

Signal interconnection to a DMM

Signal interconnection to a Spectrum Analyzer

5-2 AFG3000 Series Arbitrary/Function Generators Service Manual

Performance Conditions

The adjustments in this section are an extensive, valid confirmation of performance and functionality when the following requirements are met:

 The cabinet covers must be on the AFG3000 Series.

 The instrument must have been calibrated/adjusted at an ambient temperature

 The instrument must have had a warm-up period of at least 20 minutes.

Enable the service mode

You must enable the service mode to perform the adjustment procedure. Do the following steps to enter the service mode:

1. Push the power button to power on the arbitrary/function generator.

2. After the beep, push the front-panel Recall button, and then push the

between +20

front-panel 7 numeric button.

°C and +30 °C.

Adjustment Procedures

Save menu

Clear CAL Data menu

3. Keep pushing these buttons until the power-on screen is displayed.

4. Release the buttons when the top screen is displayed.

5. Check whether the service mode is available by pushing the Utility > -more-

> -more- buttons. Service Menu is displayed in the third page of Utility menu.

You can adjust the Reference Clock, LF, Flatness, Spurious, and Trigger Delay parameters on the Manual Calibration that is described in this section. Each of changed parameters is stored in non-volatile memory of the arbitrary/function generator after you push the Save menu in the first page of Manual Calibration. Previous adjustment parameters will be recalled after a power cycle unless you push the Save menu button.

The Clear CAL Data menu in the second page of Manual Calibration clears all the current adjustment parameters and sets them to 0. But unless you push the Save menu button, the previous adjustment parameters will be recalled after a power cycle.

AFG3000 Series Arbitrary/Function Generators Service Manual 5-3

Adjustment Procedures

Reference Clock

This procedure adjusts the frequency accuracy of the arbitrary/function generator. For any model, only one frequency point of channel 1 is adjusted.

1. Connect the arbitrary/function generator to the frequency counter as shown in

Figure 5-1.

AFG3000 series

CH1 Output

50 Ω BNC coaxial cable

Frequency counter

Inputs

Figure 5-1: Reference Clock adjustment

2. Push the Default front-panel button and OK menu button to recall the

arbitrary/function generator default setup.

3. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 1.000000 MHz Frequency/Period (front)

Amplitude 1.00 Vpp Amplitude/High (front)

Channel 1 Output On On (front)

4. Push the Utility > -more- > -more- > Service Menu > Manual Calibration > -more- > Reference Clock buttons. Ref Clock value is selected.

5. Adjust the Ref Clock value with the rotary knob so that the frequency counter reading is between 0.999999 MHz and 1.000001 MHz.

6. Push the Save menu button to save the adjusted value.

5-4 AFG3000 Series Arbitrary/Function Generators Service Manual

LF Adjustment

Adjustment Procedures

This procedure adjusts the LF amplitude accuracy of the arbitrary/function generator. This adjustment is not necessary in the AFG3021 and AFG3022.

1. Connect the arbitrary/function generator to the DMM as shown in Figure 5-2.

AFG3000 series

CH1 Output

50 Ω BNC coaxial cables + 50 Ω terminator

DMM

BNC-Dual banana adapter

Figure 5-2: LF adjustment

2. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Frequency 10.00000 kHz: AFG310x

100.00000 kHz: AFG325x

Load Impedance 50 Ω TopMenu > Output Menu > Load Impedance

Amplitude 1.00 Vpp Amplitude/High (front)

Channel 1 Output On On (front)

Frequency/Period (front)

> 50 Ω

3. Set the DMM voltage unit to VAC (effective voltage).

4. Record the DMM voltage reading:

AFG Function Frequency DMM reading

AFG310x Sine 10.00000 kHz CH1: (CH2: )

AFG325x Sine 100.00000 kHz CH1: (CH2: )

5. Set the AFG3000 Series frequency to 100.000 Hz.

6. Push the Utility > -more- > -more- > Service Menu > Manual Calibration

> LF Adjustment > (CH1) buttons. LF Adj value is selected.

7. Adjust the LF Adj value with the rotary knob so that the DMM voltage reading

is the same as shown in the Table at step 4.

AFG3000 Series Arbitrary/Function Generators Service Manual 5-5

Adjustment Procedures

Flatness adjustment

8. (AFG3102, AFG3252 only) Connect the AFG3000 Series CH2 Output to the DMM. Repeat steps 2 through 7 for the channel 2 output.

9. Push the and the Save button to save the adjusted value.

To obtain the flatness of sine waveform relative to the 100 kHz sine waveform, compensate the output level of sine waveform at 5 MHz interval with the power meter.

1. Connect the arbitrary/function generator to the power meter with a power head as shown in Figure 5-3.

AFG3000 series

CH1 Output

Power head

50 Ω BNC coaxial cables

Power met er

Figure 5-3: Flatness adjustment

2. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Amplitude Units Vpp TopMenu > Amplitude/Level Menu > -more- >

Units > Vpp

Amplitude 1.0 Vpp Amplitude/High (front)

Offset 0 V Offset/Low (front)

Channel 1 Output On On (front)

3. Push the Utility > -more- > -more- > Service Menu > Manual Calibration > Flatness > CH1-Flatness Next Frequency buttons. The setting of the first frequency of the arbitrary/function generator is 100 kHz.

4. Set the frequency parameter of the power meter to 100 kHz, and compensate the power meter so that the reading value at 100 kHz may become 0 dB with the frequency dependent offset function. Then set up the power meter to the relative measurement mode.

5. Push the CH1-Flatness Next Frequency button. The setting of next frequency of the arbitrary/function generator becomes 5 MHz.

5-6 AFG3000 Series Arbitrary/Function Generators Service Manual

Adjustment Procedures

6. Change the frequency of the power meter setting to 5 MHz (same as the

arbitrary/function generator frequency).

7. The power meter shows the value difference from the reference value. Set this

value to the Flatness field of the arbitrary/function generator.

8. Repeat steps 5 through 7 until the setting of the arbitrary/function generator is:

25 MHz; AFG302x, 100 MHz; AFG310x, or 240 MHz; AFG325x. The frequency of the output signal of the arbitrary/function generator increases in 5 MHz step every time you push the CH1-Flatness Next Frequency button. Set the frequency of the power meter to the same frequency of the arbitrary/function generator in step 6. Pushing the CH1-Flatness Previous Frequency button decreases the output frequency of the arbitrary/function generator.

9. Push the CH1-Flatness Apply Parameters button to enable the input data for

flatness correction.

10. (AFG3xx2 only) Repeat steps 2 through 9 for the channel 2 output.

11. Push the button and Save menu button to save the adjusted value.

AFG3000 Series Arbitrary/Function Generators Service Manual 5-7

Adjustment Procedures

Spurious adjustment

This adjustment minimizes spurious of the output signal by adjusting spurious in the frequency of several points. This adjustment is not necessary in the AFG3021 and AFG3022.

1. Connect the arbitrary/function generator to the spectrum analyzer as shown in Figure 5-4.

Spectrum analyzer (WCA280A)

AFG3000 series

CH1 Output

50 Ω BNC coaxial cable

BNC(Fe)-N(Ma) adapter

Figure 5-4: Spurious adjustment

2. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function Sine Sine (front)

Amplitude Units Vpp TopMenu > Amplitude/Level Menu > -more- >

Units > Vpp

Amplitude 1.0 Vpp Amplitude/High (front)

Channel 1 Output On On (front)

3. AFG310X:

Push the Utility > -more- > -more- > Service Menu > Manual Calibration > Spurious Adjustment > CH1 Pulse 2.7 MHz buttons.

AFG325X:

Push the Utility > -more- > -more- > Service Menu > Manual Calibration > Spurious Adjustment > CH1 Sine 0.1 MHz buttons.

4. Set up the spectrum analyzer according to the Spurious adjust setup of the AFG3000 Series.

5-8 AFG3000 Series Arbitrary/Function Generators Service Manual

Adjustment Procedures

AFG310x Spectrum Analyzer

Spurious Adjust Center Frequency Span Spurious Frequency

Pulse 2.7 MHz 247.3 MHz 100 kHz 247.3 MHz

AFG325x Spectrum Analyzer

Spurious Adjust Center Frequency Span Spurious Frequency

Sine 0.1 MHz 249.9 MHz 100 kHz 249.9 MHz

Sine 50 MHz 200 MHz 100 kHz 200 MHz

Sine 200 MHz 50 MHz 100 kHz 50 MHz

Pulse 2.7 MHz 247.3 MHz 100 kHz 247.3 MHz

5. Push the CH1-Sine (Pulse) x.x MHz Gain menu button.

6. Adjust the Spurious Gain value with the rotary knob to minimize the spurious

on the spectrum analyzer screen.

7. Push the CH1-Sine x.x MHz Phase menu button.

8. Adjust the Spurious Phase value with the rotary knob to minimize the

spurious on the spectrum analyzer screen.

9. Push the button. Repeat steps 4 through 8 to minimize the spurious

display on the spectrum analyzer screen for each frequency of the Sine (Pulse) x.x MHz.

10. (AFG3xx2 only) Repeat steps 2 through 9 for the channel 2 output.

11. Push the button and the Save menu button to save the adjusted value.

AFG3000 Series Arbitrary/Function Generators Service Manual 5-9

Adjustment Procedures

Trigger delay adjustment

This procedure adjusts trigger timing of two channels. This adjustment is not necessary in AFG3021, AFG3101, and AFG3251.

1. Connect the arbitrary/function generator to the oscilloscope as shown in Figure 5-5.

Oscilloscope

AFG3000 series

CH1 Output

CH2 Output

50 Ω BNC coaxial cable

CH1 Input

CH2 Input

Figure 5-5: Trigger delay adjustment

2. Push the Default front-panel button and OK menu button to recall the arbitrary/function generator default setup.

3. Set up the arbitrary/function generator using the following steps:

Select menu Setting Operation

Function (CH1) Pulse Pulse (front)

Leading (CH1) AFG3022: 18 ns

AFG3102: 5 ns AFG3252: 2.5 ns

Delay (CH1) 0.00 ns Delay (front)

Function (CH2) Pulse CH1/CH2 > Pulse (front)

Leading (CH2) AFG3022: 18 ns

AFG3102: 5 ns AFG3252: 2.5 ns

Delay (CH2) 0.00 ns Delay (front)

Run Mode (CH2) Burst Burst (front)

Trigger Delay 0.0 ns more (menu) > Delay

Run Mode (CH2) Continuous Continuous (front)

Channel 1 Output On On (front)

Channel 2 Output On On (front)

Pulse Parameter Menu (menu) > Leading Edge

5-10 AFG3000 Series Arbitrary/Function Generators Service Manual

Tektronix AFG3021, AFG3022, AFG3101, AFG3102, AFG3251 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARRANTY 16

Table of Contents

List of Tables

List of Figures

General Safety Summary

Service Safety Summary

Preface

Finding Other Information

Manual Conventions

Introduction

Performance Verification Procedures

Strategy for Servicing

Tektronix Service Offerings

Specifications

Performance Conditions

Electrical

Inputs/Outputs

General

Operating Basics

General Features

Installation

Protect Your Instrument from Misuse

Floating Ground

Protect Your DUT

Powering the Instrument On and Off

Self Test and Self Calibration

Getting Acquainted with Your Instrument

Screen Interface

Theory of Operation

Overview

Platform

Generator section

Performance Verification

Self Tests

Performance Tests

Test Record

Frequency/Period Test

Amplitude Test

DC Offset Test

AC Flatness Test

Harmonics Distortion Test

Total Harmonic Distortion Test

Spurious Test

Rise-Fall time Test

Adjustment Procedures

Purpose

Equipment Required

Performance Conditions

Enable the service mode

Save menu

Clear CAL Data menu

Reference Clock

LF Adjustment

Flatness adjustment

Spurious adjustment

Trigger delay adjustment