Tektronix AFG2000, AFG2021 Service Manual

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AFG2000 Series

ZZZ

Arbitrary Function Generators

Service Manual

*P077058601*

077-0586-01

AFG2000 Series

ZZZ

Arbitrary Function Generators

Service Manual

www.tektronix.com

077-0586-01

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 supersedes that in all previously published material. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Additional trademark statements can be added here.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P.O. Box 5 0 0 Beaverton, OR 97077 USA

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

In North America, call 1-800-833-9200. Worl dwid e, visi t www.tektronix.com to ﬁnd contacts in your area.

Warranty

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 warran reconditioned to like n ew performance. All replaced parts, modules and products become the property of Tektronix.

ty. Parts, modules and replacement products used by Tektronix for warranty work may be new or

In order to o 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 product

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate mainte 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

LIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

IMP 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.

btain service under this warranty, Customer must notify Tektronix of the defect before the expiration

s returned to any other locations.

nance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage

[W16 – 15AUG04]

Table of Contents

General safety summary .................... ................................ ................................ ....... v

Service safety summary............................................................................................ 1

Preface ............................................................................................................... 3

Manual contents................................................................................................ 3

Manual conventions ...................... ................................ .................................. ... 3

Finding other information..................................................................................... 4

Introduction ......................................................................................................... 5

Strategy for servicing.......................................................................................... 5

Tektronix service offerings ................................................................................... 6

Performance veriﬁcation procedures ........................................................................ 6

Operating basics ..... .................................. ................................ ............................. 7

Installation. ................................ ................................ .................................. ... 8

Power the instrument on and off .............. ................................ ............................... 9

Perform instrument self test and self calibration .......................................................... 10

Protect your instrument from misuse ..... ................................ .................................. 11

Floating ground ....... ................................ ................................ ........................ 13

Protect your DUT ............................................................................................. 14

Front panel overview ......................................................................................... 15

Parts of the screen interface ................................................................................. 16

Rear panel ................. ................................ .................................. .................. 17

Theory of operation ............................................................................................... 19

Overview ...................... .................................. ................................ .............. 19

Main board .................................................................................................... 20

Front Panel board... .................................. ................................ ........................ 21

Power Supply module........................................................................................ 21

BNC Insulator boards .................... ................................ .................................. .. 21

Adjustment procedures........................................ ................................ .................... 23

Purpose of adjustments....................................................................................... 23

Equipment required................... .................................. ................................ ...... 24

Performance conditions ...................... ................................ ................................ 25

Enable the Service mode..................................................................................... 25

Save/Recall menu....................... ................................ ................................ ...... 25

Clear CAL Data menu.... ................................ .................................. .................. 25

Frequency/period adjustment................ ................................ ................................ 26

Flatness adjustment........................................................................................... 27

Resetting the serial number . ..... . ..... . ... . . ..... . ..... . ... . . . .... . ..... . ..... . ..... . ... . . ..... . ..... . ... . . . 29

Resetting the MAC address... . ..... . ... . . . .... . ..... . ..... . ..... ..... . ..... . ..... . ..... . .... . . .... . ..... . ... 29

Maintenance........................................................................................................ 31

Service preparation ..................... ................................ ................................ ...... 31

AFG2000 Series Service Manual i

Table of Contents

Preventing ESD

Preventive maintenance .............. .................................. ................................ ...... 32

Inspection and cleaning ...... ................................ ................................ ................ 33

Removal and installation procedures ............................................................................ 37

After repair adjustments.... ................................ .................................. ................ 38

Before disassembly ........................................................................................... 38

Equipment r

Handle removal/installation . . ..... . ..... . ... . . ..... . ..... . ... . . . .... . ..... . ..... . ... . . ..... . ..... . ... . . . .... 39

Case removal/installation . . .... . . .... . ..... . ..... . ..... . ..... . ..... ..... . ..... . ..... . ..... . ..... . ... . . . .... . . 40

Front panel knob removal/installation ..... . ..... . ..... . ..... . ..... . .... . . .... . . .... . ..... . ..... . ..... . ..... 41

Front panel cover removal/installation ..... . ..... . ..... . ..... . ..... . ... . . ..... . ..... . ..... . ..... . ..... . .... 42

LCD display and Front Panel board removal/installation . . ..... . .... . . .... . ..... . ..... . ..... . ..... ..... . 44

Front BN

Front chassis and main chassis separation ..... .................................. .......................... 48

Power Supply module removal/installation .... . . .... . . .... . ..... . ..... . ..... . ..... . ..... . ..... . ..... . ..... 51

Fan removal/installation .... . ..... . ... . . . .... . . .... . . .... . ..... . ..... . ..... . ..... . ..... . ..... . ..... . ..... . ... 53

AC line ﬁlter removal/installation ... . ..... . ..... . ..... . .... . . .... . ..... . ..... . ..... . ..... . ..... ..... . ..... . 56

Main board removal/installation . ..... . ..... . ... . . ..... . ..... . ..... . ..... . ..... . ... . . . .... . . .... . ..... . ..... 57

bleshooting.................................................................................................... 61

Trou

Troubleshooting tools and equipment ...................................................................... 61

Troubleshooting tree.......................................................................................... 61

Diagnostics .................................................................................................... 63

Diagrams ........................................................................................................... 67

Replaceable parts .......................... ................................ .................................. ...... 69

rts ordering information............. .................................. ................................ .... 69

Using the replaceable parts list .............................................................................. 70

C Insulator board removal/installation .... . ..... . ..... . ..... . ..... . ..... . ..... . ..... . ..... . ... . . 47

............................................................................................... 31

equired for disassembly ....... ................................ ................................ 38

ii AFG2000 Series Service Manual

List of Figures

Figure 1: Instrument dimensions ................................................................................. 8

Figure 2: Fuse and fuse adapter.................................................................................. 12

Figure 3: Block diagram .......................................................................................... 19

Figure 4: Fr

Figure 5: Flatness adjustment connections ..................................................................... 27

Figure 6: Positioning the handle for removal . ..... . ..... . .... . ..... . ..... . ..... . ..... . ... . . . .... . ..... . ..... . . 39

Figure 7: Location of the case retaining screws................................................................ 40

Figure 8: Removing the rear case........................ ................................ ........................ 41

Figure 9: Location of the knob retaining clip ................ ................................ .................. 41

Figure 1

Figure 11: Removing the front panel cover and rubber keypad .............................. ................ 43

Figure 12: Disconnecting the front-panel ribbon cable from the Main board .............................. 44

Figure 13: Removing the Front Panel board ................................................................... 45

Figure 14: Disconnecting the LCD display cable.............................................................. 46

Figure 15: Disconnecting the ribbon cable from the Main board .......... ................................ .. 48

re 16: Location of the front chassis retaining screws .................................................... 49

Figu

Figure 17: Correct position of the EMI clip for the USB port..... . ..... . .... . ..... . ..... . ..... . .... . ..... . .. 50

Figure 18: Correct orientation of BNC insulator................................... ............................ 50

Figure 19: Correct orientation of power button ................................................................ 50

Figure 20: Location of the Power Supply module cables and retaining screws ............................ 51

Figure 21: Positioning the power supply shield on the stand-off posts...................................... 52

gure 22: Location of the fan cable ...................... .................................. .................... 53

Figure 23: Location to start removing the rear panel label on the AFG2021....... ........................ 54

Figure 24: Peeling off the rear panel label of the AFG2021................ ................................ .. 54

Figure 25: Aligning the rear panel label (AFG2021 with Option GL shown) .............................. 55

Figure 26: AC line ﬁlter cable connections..................................................................... 56

Figure 27: Location of Main board retaining screws and stand-offs......................................... 58

Figure 28: Installing the rear BNC washers, nuts, and insulators .... . . .... . ..... . ..... . ..... . .... . ..... . .... 59

Figure 29: Troubleshooting tree ... .................................. ................................ ............ 62

Figure 30: Interconnections for the AFG2021 (GPIB and LAN only on AFG2021 with Option GL)... 67

Figure 31: Front panel assembly exploded diagram ........................................................... 72

Figure 32: Chassis assembly exploded diagram ............................................................... 75

equency/Period tests ................................................................................ 26

0: Location of the front panel cover retaining screws ............................................... 42

AFG2000 Series Service Manual iii

Table of Contents

List of Tables

Table 1: Test equipment .......................................................................................... 24

Table 2: Ext

Table 3: Internal inspection check list........................... .................................. .............. 35

Table 4: Troubleshooting equipment.......... ................................ .................................. 61

Table 5: Error codes............................................................................................... 65

Table 6: Parts list column descriptions...................................... .................................. .. 70

Table 7: Front panel assembly replaceable parts (See Figure 31.) . .................................. ........ 71

Table 8: C

ernal inspection check list.......................................................................... 33

hassis assembly replaceable parts (See Figure 32.)................................................ 73

iv AFG2000 Series Service Manual

General safety summary

General safet

To avoid ﬁr

e or personal

injury

y summary

Review the fo this product or any products connected to it.

To avoid pot

Only qualiﬁed personnel should perform service procedures.

Use proper

certiﬁed for the country of use.

Ground th

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.

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

llowing safety precautions to avoid injury and prevent damage to

ential hazards, use this product only as speciﬁed.

power cord. Use only the power cord speciﬁed for this product and

e product. This product is grounded through the grounding conductor

Power disconnect. The power cord disconnects the product from the power source.

Do not block the power cord; it must remain accessible to the user at al l times.

Do not operate without covers. Do not operate this product with covers or panels removed.

Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by qualiﬁed service personnel.

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

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.

AFG2000 Series Service Manual v

General safety summary

Termsinthismanual

Symbols and terms on the

product

These terms may

WARNING. Wa rning statements identify conditions or practices that could result

in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in

damage to this product or other property.

These terms may appear on the product:

DANGER in the marking.

WARNING read the marking.

CAUTIO

The following symbol(s) may appear on the product:

appear in this manual:

dicates an injury hazard immediately accessible as you read

indicates an injury hazard not immediately accessible as you

N indicates a hazard to property including the product.

vi AFG2000 Series 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.

Disconnec

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.

t power. To avoid electric shock, disconnect the mains power by means

AFG2000 Series Service Manual 1

Service safety summary

2 AFG2000 Series Service Manual

Preface

Manual contents

This manual provides instructions to calibrate, troubleshoot, and repair the AFG2021, AFG2021-SC, and AFG2021-BR Arbitrary Function Generators to the module le

The manual consists of the following sections:

Operating Information includes general information and operating instructions.

Theory of Operation contains circuit descriptions that support service to the module level.

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.

vel.

Manual conventions

Modules

Diagrams contains interconnection diagrams.

Replaceable Parts List includes a table of all replaceable modules, their

descriptions, and their Tektronix part numbers.

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 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.

, and so on) in the manual as is used on the arbitrary function

AFG2000 Series Service Manual 3

Preface

Safety

Symbols and ter beginning of this manual.

Finding other information

See the following list for other documents supporting the arbitrary function generator. All documents except the Online Help and the Declassiﬁcation and Security Instructions are located on the product Documentation CD-ROM that shipped with your instrument. Product documents can also be found on the Tektronix Web site (www.tektronix.com/downloads).

Document name Description

Quick Start User Manual A quick reference to major features of the

Speciﬁcations and Performance Veriﬁcation Technical Reference

AFG2021 Programmer Manual An encyclopedia of topics that describe the

Online Help

AFG2000 Series Declassiﬁcation and Security Instructions

msrelatedtosafetyappearintheSafetySummarynearthe

instrument and how they operate. It also provides several tutorials to familiarize you with basic instrument features.

A source for complete instrument speciﬁcations and a procedure for verifying the performance of the instrument.

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

An online help system, integrated with the User Interface application that ships with this product. The online help is preinstalled in the instrument.

A source for instructions on how to declassify the instrument.

4 AFG2000 Series Service Manual

Introduction

Strategy for servicing

This manual contains information that is needed to properly service the arbitrary function generator 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 and the Service safety summary.(See page v.)

Read th e operating requirements for the instrument. (See page 8, Installation.)

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

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.

Toremoveandreplaceanyfailedmodule, 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 Parts List section contains part number

d ordering information for all replaceable modules.

AFG2000 Series Service Manual 5

Introduction

Tektronix ser

Warranty repair service

For more information

vice offerings

Self service

Tektronix provides service to cover repair under warranty as well as other services that may provide a cost-effective answer to your service needs.

Tektronix service technicians are well trained to service the arbitrary function generator. They have access to the latest information on improvements to the generator a

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

Tektronix supports repair to the replaceable part and module level.

Contact your local Tektronix service center or sales engineer for more information on any repair or adjustment service.

swellasnewoptions.

service at most Tektronix service locations.

Performance veriﬁcation procedures

The performance check is provided in the AFG2000 Series Speciﬁcations and Performance Veriﬁcation Technical Reference manual should be performed every

12 months. In addition, a performance check is recommended after module

acement.

repl

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

6 AFG2000 Series Service Manual

Operating basics

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

AFG2000 Series Service Manual 7

Operating basics

Installation

Use the following information to safely install your instrument.

Operating requirements

Figure 1: Instrument dimensions

Environ

mental

requirements

The followin supply operating requirements of the instrument.

Clearance. When placing the instrument on a cart or bench, observing the following clearance requirements:

Sides: 50 mm (2 in)

Rear: 50 mm (2 in)

Temperature. Before operating the instrument, ensure the ambient temperature is between 0 °C to +50 °C (+32 °F to +122 °F).

g information and ﬁgure describe temperature, clearance , and power

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

obstructions.

Power supp ly

Source voltage and frequency. 100 V to 240 V, 50 Hz to 60 Hz or 115 V, 400 Hz.

requirements

Power Consumption. 60 W

WARNING. To reduce the risk of ﬁre and shock, ensure that the mains supply

voltage ﬂuctuations do not exceed 10% of the operating voltage range:

8 AFG2000 Series Service Manual

Operating basics

Power the inst

Power on

rument on and off

The following procedures show you how to apply power to the instrument and turn it on and off.

CAUTION. Th

Ensure they are raised before instrument setup.

To turn app

1. Insert the AC power cord into receptacle on the rear panel and the other en properly grounded power outlet.

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

ly power to the instrument and turn it on, do the following:

dintoa

is product will not function with the rear feet in the down position.

the power

Powe

roff

NOTE. Wait until the

front panel display shows that the instrument has passed all power-on self tests before using the instrument.

To turn the instrument off, do the following:

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

AFG2000 Series Service Manual 9

Operating basics

Perform instr

ument self test and self calibration

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

NOTE. Disconnect all the cables from the instrument before perform ing a self

test or a self calibration.

Diagnostics (Self test): Perform the self test to verify that your instrument is operating correctly.

Calibration (Self calibration): The self calibration mainly checks DC accuracy using the internal calibration routines. Perform at least once a year to maintain DC accuracy. It is recommended that the self calibration should be performed along with a periodic check.

NOTE. If you need to verify that the instrument meets the warranted speciﬁcations,

do the Speciﬁcations and Performance Veriﬁcation manual.

complete set of performance veriﬁcation procedures provided in the

ION. Do not power off the instrument while executing self calibration. If the

CAUT

power is turned off during self calibration, data stored in the internal memory may be lost.

10 AFG2000 Series Service Manual

1. Push the front-panel Utility button.

2. Push the -more button.

3. Push the Diagnostics bezel button.

4. Do one of the following:

- bezel

/Calibration

NOTE. Before executing

self calibration, ensure that the ambient temperature is between +20 °C and +30 °C (+68 °F to +86 °F), and allow a 20 minute warm-up period.

Execute Diagnostics: Push this bezel button to execute the instrument diagnostics.

Execute Calibrations: Push this bezel button to execute self calibration.

5. If the diagnostics or calibration completes without any errors, the message “PASSED” is displayed.

Operating basics

Protect your instrument from misuse

Check input and output

ctors

conne

AFG2000 Series Service Manual 11

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

ut connectors to avoid making the wrong connection.

outp

NOTE. The instrument input and output connectors are ﬂoating inputs/outputs.

(See page 13, Floating ground.)

Operating basics

1. Locate the Channel Output and the Trigger Output connec front panel.

2. Locate the Trigger Input on the front p

3. Locate the Ext Mod Input and the Ext Ref Input connectors on the rear panel.

tors on the

anel.

WARNING. To avoid personal injury due to electric shock, do not apply voltages

in excess of 42 Vpk to any BNC connector ground or to the chassis ground.

Use fu

se adapter

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

connectors. The instrument may be damaged.

CAUTION. 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

r inexperienced users, always attach the fuse adapter to the output connectors

othe to avoid damage. (See the User Manual for your product for information about optional accessories.)

Figure 2: Fuse and fuse adapter

1. Fuse adapter

2. Fuse

12 AFG2000 Series Service Manual

Floating ground

Operating basics

Since the common input and output channels of the a rbitrary/function generator are 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 BNC connectors are connected to the common ground, and the remote interface connector is connected to the chassis ground.

CAUTION. T

ground is 42 Vp-p (DC + peak AC). When the potential voltage between the chassis ground and common ground goes over 42 Vp-p, the internal protective circuit will be activated to protect the circuits. However, higher voltage may cause the internal circuits in the instrument to be d amaged.

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 Tektro

When a potential voltage exists between the common ground and chassis ground,

-circuiting between them may lead to excessive current ﬂow and the internal

short or external circuits may be damaged.

WAR N

ﬂoating voltage and the output voltage of the instrument does not exceed 42 Vpk. Do not touch the center of the BNC while the equipment is in use.

he maximum rated voltage between the chassis ground and common

nix Service Support.

ING. To prevent electrical shock, use this product so that the sum of the

AFG2000 Series Service Manual 13

Operating basics

Protect your DUT

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 s et the limit values for high level and low level.

1. Push the Output Menu bezel button.

2. Push the Lim button.

3. Push the High Limit bezel button.

4. Notice that in this example, High Limit is set to Limit is set to -5.000 V.

it bezel

5.000 V, and Low

5. Use the numeric keys or the general purpose knob to set the High Limit to 50 mV and the Low Limit to -50 mV.

6. Push the front-panel Sine button to display the waveform parameter. Conﬁrm that High and Low voltage levels were changed.

NOTE. You cannot enter any

values greater than 50 mV for High level.

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

displayed at the left end of the graph area.

14 AFG2000 Series Service Manual

Front panel overview

Operating basics

The front panel is divided into easy-to-use functional areas. This section provides you with a quick overview of the front panel controls a nd the screen interface.

Item Descrip

1 Bezel buttons

2 Return to previous menu

3Runmod

9Tri

10 Trigger output connector

13 Function buttons

tion

e buttons

tility, and Save/Recall buttons

Help, U

ic keypad, cancel action, delete/backspace, and Enter buttons

Numer

ral purpose knob

Gene

w buttons allow you to select a speciﬁc number on the display screen when

Arro you are changing amplitude, phase, frequency, or other such values

Channel On/Off and Manual Trigger buttons

gger input connector

Channel output connector

USB connector

ower button

AFG2000 Series Service Manual 15

Operating basics

Lock or unlock the front

panel controls

Push the front-

If you have an AFG2021 model and would like to remotely lock the front panel controls, use

SYSTem:KLOCk[:STATe]

Parts of the screen interface

panel Cancel button twice to unlock the front panel.

the following remote command:

Item Description

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 k eys.)

Graph / waveform display area: This part of the main display area shows the signal as a graph or waveform.

Level meter: The top portion of the indicator shows the high limit value; the bottom portion of the indicator shows the low limit value; and the indicator itself shows the currently selected level.

Parameter display area: This part of the main display area shows active parameters.

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

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.

16 AFG2000 Series Service Manual

Rear panel

Operating basics

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

Item Description

1 Power input: T his is where you attached an appropriate power cord to supply

power to the instrument.

3 LAN port: This port can be used to connect the instrument to a network.

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

Connect a 10BASE-T or 100BASE-T cable here.

NOTE. This port is only available for the AFG2021 with option GL.

USB (type B) connector: T his can be used to connect a USB type B controller.

GPIB: This is port can be used to control the instrument through GPIB

commands.

NOTE. This port is only available for the AFG2021 with option GL.

EXT REF INPUT connector: This is a BNC connector for the external reference input.

EXT MODULATION INPUT connector: This is a BNC connector for the external modulation input. It can be used to input a modulated signals.

Security slot: This slot allows you to use a standard laptop computer security cable to secure your instrument to your location.

Fan (ventilation) vent: This is the ventilation opening for the fan.

AFG2000 Series Service Manual 17

Operating basics

18 AFG2000 Series Service Manual

Theory of operation

This section describes the electrical operation of the AFG2000 Series instruments to the module level. It describes the basic operation of each functional circuit block shown i

Overview

n the block diagram. (See Figure 3 on page 19.)

The AFG202 interface. The AFG2021 with option GL also include GPIB and LAN interfaces.

1, AFG2021-SC, and AFG2021-BR instruments have a USB

Figure 3: Block diagram

AFG2000 Series Service Manual 19

Theory of operation

Main board

CPU section

Generator section

CPU circuit. The CPU Circuit contains an MPU, Flash RAM, and D RAM to

control the instrument. The liquid crystal controller a nd 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. This section contains a 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 section.

Isolator. Transmit the serial control signal from the CPU section 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.

Trigger circuit. 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.

20 AFG2000 Series Service Manual

Theory of operation

Front Panel board

Front panel

module

LCD display

module

Fan

Local regulato

-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.

A 50 mm by 50 mm size, DC 12 V type fan. It is driven by fan controller in the CPU section.

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

The display is a 3.5 inch QVGA (320 x 240) color TFT LCD.

r. Suppliesthenecessary+1.8V,+3.3V,+5V,+15V,-5V,and

Power Supply module

BNC Insulator boards

Front BNC

Insulator board

Rear BNC

Insulator board

The power supply module provides +4.3 V, ±18 V, and +7.5 V to the circuit. This power from 90 VAC.

This board insulates the I /O signals on the front panel BNC connectors from the chassis.

Thi chassis.

supply module accepts the input voltage within the range of 250 VAC

s board insulates the I/O signals on the rear panel BNC connectors from the

AFG2000 Series Service Manual 21

Theory of operation

22 AFG2000 Series Service Manual

Adjustment procedures

This section describes the procedures necessary to manually adjust the AFG2021 Arbitrary Function Generator. Perform each adjustment when you exchange a circuit board.

Purpose of a

Adjustment interval

After repair adjustments

djustments

This procedure returns the arbitrary function generator to compliance with its Warranted Characteristics a s listed in the Speciﬁcation section. It can also be used to optimiz

Generally, these adjustments should be performed every 12 months.

After the removal and replacement of a module due to electrical failure, perform the foll

e the performance of the arbitrary function generator.

owing two adjustments as described in this section:

Reference clock

Flatness

AFG2000 Series Service Manual 23

Adjustment procedures

Equipment required

The following table lists the equipment that is required to complete the adjustment procedures.

Table 1: Test equipment

Descriptio

1. Power meter 100 kHz to 250 MHz

2. Power head 100 kHz to 250 MHz

3. Frequenc

4. BNC coax

5. BNC terminator 50 Ω ,±1Ω , 2 W, DC to 1 GHz,

6. Adapter dual-banana Plug

y counter

(2 required)

ial cable

Minimum req

1 μW to 100 mW +20 dBm)

Accuracy: 0.02 dB

Resolutio

1 μW to 100 +20 dBm)

50kHzto5GHz,

Accuracy: 0.01ppm

Phase me

Ω ,mal

connector, 91 cm

BNC

BNC (female) to dual banana

uirements

(-30 dBm to

n: 0.01 dB

mW (-30 dBm to

asurement

etomaleBNC

Recommended equipment Purpose

R&S NRVS

R&S NRV-Z

Tektronix FCA3100 or equivalent

Tektronix part number 012-048

Tektr o 011-0049-02

Tektronix part number 103-0090-00

2-00

nix part number

Measures voltage. Used in multiple pr

Measures voltage. Used in multiple

Checks clock frequency.

Signal i

Signal termination

Signal interconnection to a DMM

ocedures.

procedures.

nterconnection

24 AFG2000 Series Service Manual

Adjustment procedures

Performance c

onditions

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

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

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

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

The cabinet covers must be on the instrument.

The instrument must have been calibrated/adjusted at an ambient temperature between +20 °C and +30 °C.

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

front-panel 7 numeric button.

Save/Recall menu

Clear CAL Data menu

5. Chec

You can adjust the Reference Clock and Flatness 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

e recalled after a power cycle unless you push the S ave/Recall menu button.

TheClearCALDatamenuinthesecondpage of Manual Calibration clears all the current adjustment parameters and sets them to 0. However, unless you push the Save/Recall menu button, the previous adjustment parameters will be recalled after a power cycle.

k whether the service mode is available by pushing the Utility > -more- > -more- buttons. The Service Menu selection is displayed in the third page of the Utility menu.

AFG2000 Series Service Manual 25

Adjustment procedures

Frequency/pe

riod adjustment

This procedure adjusts the frequency accura cy of the arbitrary function generator. Only one frequency point of the output channel is adjusted.

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

Figure 4: Frequency/Period tests

2. Push the following buttons to recall the arbitrary function generator default setup:

Save/Recall > Setup > Recall > Default.

NOTE. If you are using an AFG2021-SC or AFG2021-BR, push the following

buttons to recall the arbitrary function generator default setup: Save/Recall > Default.

3. Set up the arbitrary function generator as follows:

a. Push the Sine button on the front panel

b. Push the Frequency/Period/Phase Menu bezel button.

c. Push the Frequency bezel button (it will turn dark when activated) and

use the numeric keypad or general purpose knob to set the frequency to

1.000000 MHz.

d. Push the

e. Push the Amplitude/Level Menu bezel button.

f. Push the Amplitude bezel button (it will turn dark when activated) and

use the numeric keypad or general purpose knob to set the amplitude to 1.000 Vp-p.

g. Check that the Channel On/Off front panel button LED is lit. If it is

not lit, then the channel output is off. Push the Channel On/Off button to turn it on.

button on the front panel to return to the top menu.

26 AFG2000 Series Service Manual

Adjustment procedures

Flatness adjustment

4. Check that read

1.000001 MHz.

5. Push the Pulse button on the front panel.

6. Adjust the Ref Clock value with the front panel rotary knob on the generator

so that the frequency counter reading is between 0.999999 MHz and

1.000001 MHz.

7. Push the Save/Recall button on the front panel.

8. Push the Save bezel 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 the 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 the following ﬁgure.

ing of the Frequency Counter is between 0.999999 MHz and

Figure 5: Flatness adjustment connections

2. Set up the arbitrary function generator as follows:

a. Pu

b. Push the Frequency/Period/Phase Menu bezel button.

c. Push the Frequency bezel button (it will turn dark when activated) and

d. Push the

e. Push the Amplitude/Level Menu bezel button.

f.P

g. Push the Units bezel button and then push the dBm bezel button to change

AFG2000 Series Service Manual 27

sh the Sine button on the front panel.

use the numeric keypad or general purpose knob to set the frequency to

100.0000 kHz.

button on the front panel to return to the top menu.

ush the -more- bezel button.

the voltage units to dBm.

Adjustment procedures

h. Push the -more-

i. Push the Amplitude bezel button (it will turn dark when activated) and

use the numeri +4.0 dBm.

j. Check that t

If it is not lit, then the channel output is off. Push the Channel On/Off buttontotu

3. Set the frequency of the power meter to 100 kHz, and compensate the power meter so th frequency dependent offset function. Then set up the power meter to the relative measurement mode.

4. Change the frequency of the power meter setting to 5 MHz so that it is the same as the arbitrary function generator frequency.

5. The power meter shows the value difference from the reference value, which is ± 0.30. Set this value to the Flatness ﬁeld of the arbitrary function generator.

6. Repeat steps 4 through 5 until the setting of the arbitrary function generator is 20 MHz.

The output signal frequency of the arbitrary function generator increases in 5 MHz steps every time you increase the frequency. Set the frequency of the power meter to the same frequency of the arbitrary function generator in step 4.

at the reading value at 100 kHz may become 0 dB with the

bezel button.

c keypad or general purpose knob to set the amplitude to

he Channel On/Off front panel button L ED is lit.

rn it on.

28 AFG2000 Series Service Manual

Resetting the serial number

When you replace the A72 CPU board, you must set the serial number. Perform the following procedure to set the serial number:

1. Enable the Service mode. (See page 25, Enable the Service mode.)

2. Push the Utility > -more- > -more- buttons.

Adjustment procedures

3. Push the Ser

4. Enter the serial number using the numeric keys and Function buttons.

NOTE. Use

More... button corresponds to A through F.

5. Push the

Resetting the MAC address

The MAC When a new MAC address setup is required, perform the following procedure:

1. Enabl

2. Push the Utility > -more- > -more- buttons.

3. Push the Service Menu > Factory Initialize > MAC Address buttons.

4. Enter the MAC address using the numeric keys and Function buttons.

vice Menu > Factory Initialize > Serial Number buttons.

the Function buttons to enter alphabetical characters. The Sine to

OK button.

Address is set at the factory and usually does not need to be reset.

e the Service mode. (See page 25, Enable the Service mode.)

NOTE. Use the Function buttons to enter alphabetical characters. The Sine to

More... button corresponds to A through F. Use the +/- key to enter hyphens.

5. Push the OK button.

AFG2000 Series Service Manual 29

Adjustment procedures

30 AFG2000 Series Service Manual

Maintenance

Service preparation

This section contains the information needed to do periodic and corrective maintenance on the arbitrary function generator. The following subsections are included:

Preparation –Tellsyouhowtogetreadytodoarbitraryfunctiongenerator maintenance.

Preventing ESD – Provides general information on preventing damage to internal modules when doing maintenance.

Inspection and Cleaning – Information and procedures for inspecting the arbitrary function generator and cleaning its external and internal modules.

Removal and Installation Procedures – Procedures for the removal of defective modules and replacement of new o r repaired modules.

Troubleshooting – Information for isolating failed modules. Included are instructions for operating the internal diagnostic routines of the arbitrary function generator and troubleshooting trees.

Preventing ESD

Only qualiﬁed persons should perform service procedures. Before performing any

ice procedures, read the General Safety Summary and Service Safety Summary

serv sections of this manual and the preventing ESD information below.

rtotheOperating Information section and your arbitrary function generator

Refe user manual for information about using the arbitrary function generator.

When performing any service that requires internal access to the arbitrary funct ion generator, adhere to the following precautions. These precautions will help you avoid damaging internal modules and their components due to electrostatic discharge (ESD).

CAUTION. Static discharge can damage any semiconductor component in this

arbitrary function generator.

Minimize handling of static-sensitive modules.

Transport and store static-sensitive modules in their static protected containers or on a metal rail. Label any package that contains static-sensitive modules.

AFG2000 Series Service Manual 31

Maintenance

Preventive maintenance

General care

Discharge the s wrist strap while handling these modules. Service static-sensitive modules only at a static-free work station.

Do not allow anything capable of generating or holding a static charge on the work station surface.

Handle circuit boards by the edges when possible.

Do not slide

Avoid handling modules in areas that have a ﬂoor or work-surface covering that is cap

Prevent function generator, and using general care when operating it. Perform preventive maintenance more often if you operate the arbitrary function generator in a severe environment. A good time to perform preventive maintenance is just before adjustment of the arbitrary function generator.

For optimum performance, follow these recommendations:

ive maintenance consists of visually inspecting and cleaning the arbitrary

tatic voltage from your body by wearing a grounded antistatic

the modules over any surface.

able of generating a static charge.

Protect the arbitrary function generator from adverse weather conditions. The arbitrary function generator is not waterproof.

Do not store or leave the arbitrary function generator whether the liquid crystal display (LCD) will be exposed to direct sunlight or high humidity for long periods of time.

The front and rear cases help keep dust out of the arbitrary function generator and must b e in place during normal operation.

To avoid damage to the arbitrary function generator, do not expose them to any sprays, liquids, or solvents.

32 AFG2000 Series Service Manual

Inspection and cleaning

Maintenance

This section describes how to inspect for dirt and damage, and how to clean the exterior and interior of the arbitrary function generator. Inspection and cleaning are done as preventive maintenance. Preventive maintenance, when done regularly, may prevent malfunctions and enhance reliability. (See page 32,

Preventive

maintenance.)

The collection of dirt on internal components can cause them to overheat and fail. Dirt also p

rovides an electrical conduction path that could cause an arbitrary function generator failure, especially under high-humidity conditions. Inspect the arbitrary function generator as often as operating conditions require.

CAUTION. Avoid the use of chemical cleaning agents which might damage the

plastics used in this AFG2000 Series Arbitrary Function Generators. Use only deionized water when cleaning the front panel buttons. Use an ethyl alcohol solutio

n as a cleaner and rinse with deionized water.

Exterior inspection

Inspect the outside of the arbitrary function generator for damage, wear, and missing parts, using the following check list as a guide. An arbitrary function generator that appears to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance. Immediately

ir defects that could cause personal injury or cause further damage to the

repa arbitrary function generator.

Table 2: External inspection check list

Item Inspect for Repair action

Cabinet, front panel,

d cover

ont-panel knobs

Connectors

Carrying handle, bail, cabinet feet

Cracks, scratches,

formations, damaged

de hardware or gaskets.

ssing, damaged, or loose

Mi knobs.

roken shells, cracked

B insulation, and deformed contacts. Dirt in connectors.

Correct operation. Repair or replace the defective

Repair or replace the defective

dule.

pair or replace m issing or

Re defective knobs.

Repair or replace the defective modules. Clear or wash out dirt.

module.

AFG2000 Series Service Manual 33

Maintenance

Exterior cleaning

Flat panel display cleaning

Perform the fol generator:

1. Remove loose d lint-free cloth. Use care to avoid scratching the clear glass display shield.

2. Remove rema detergent-and-water solution. Do not use abrasive cleaners.

CAUTION. To prevent getting moisture inside the arbitrary function generator

during external cleaning, use only enough liquid to dampen the cloth or applicator.

To avoid damage to the surface of the arbitrary function generator, do not use any abrasive or chemical cleaning agents.

The display is a soft plastic display and must be treated with care during cleaning.

CAUTION. Imported cleaning agents or methods can damage the ﬂat panel

display.

Avoid using abrasive cleaners or commercial cleaners to clean the display surface.

Avoid scrubbing the display with excessive force.

lowing steps to clean the exterior of the arbitrary function

ust on the outside of the arbitrary function generator with a

ining dirt with a lint free cloth dampened in a general purpose

Avoid spraying liquids on the display surface.

1. Clean the ﬂat panel display surface by gently rubbing the display with a clean-room wipe (such as Wypall Medium Duty Wipes, #05701, available from Kimberly-Clark Corporation).

2. If the display is very dirty, moisten the wipe with distilled water or a 75% isopropyl alcohol solution and gently rub the display surface. Avoid using excess force or you may damage the plastic display surface.

CAUTION. To prevent getting moisture inside the arbitrary function generator

ring external cleaning, use only enough liquid to dampen the cloth or applicator.

34 AFG2000 Series Service Manual

Maintenance

Interior inspection

Inspect and cle

an the interior if it appears that the arbitrary function generator may

have been damaged or exposed to an unusually dirty environment.

To access the i

nside of the arbitrary function generator for inspection and cleaning, refer to the removal and installation procedures. (See page 37, Removal and installation procedures.)

Inspect the internal portions of the instrument for damage and wear, using the check list below as a guide. Defects should be repaired immediately.

CAUTION. To prevent damage from electrical arcing, ensure that circuit boards

and components are dry before applying power to the arbitrary function generator.

Table 3: Internal inspection check list

Item Inspect for Repair action

Front and rear case

Circuit boards

Solder connections Cold solder or rosin joints.

Wiring and cables Loose plugs or connectors.

Chassis Dents, deformations, and

Cracks or deformations. Scratched lettering or display ﬁlter. Loose connectors or labels.

Loose, broken, or corroded solder connections. B urned circuit boards. Burned, broken, or cracked circuit-run plating.

Burned, broken, or frayed wiring.

damaged hardware.

Repair or replace defective hardware.

Remove failed module and replace with a new module.

Resolder joint and clean with ethyl alcohol.

Firmly seat connectors. Repair or replace modules with defective wires or cables.

Straighten, repair, or replace defective hardware.

Interior cleaning

Perform the following steps to clean the interior of the instrument:

1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi).

2. Remove any remaining dust with a lint-free cloth dampened in isopropyl

alcohol (75% solution) and rinse with warm deionized water. (A cotton-tipped applicator is useful for cleaning in narrow spaces and on circuit boards.)

NOTE. If these steps do not remove all of the dust or dirt, please contact Tektronix

for assistance. (See Contacting Tektronix at the front of this manual.)

Lubrication

There is no periodic lubrication required for this instrument.

AFG2000 Series Service Manual 35

Maintenance

36 AFG2000 Series Service Manual

Removal and installation procedures

This section describes how to remove and install the major mechanical and electrical modules. Any elec trical or mechanical module, assembly, or part listed in the parts list is referred to as a module.

See the Replaceable parts section for a list of all the replaceable modules and diagrams showing their location in the instrument. (See page 69.)

WAR NI NG . Only qualiﬁed personnel should perform service procedures. Before

doing this Summary and Service Safety Summary found at beginning of this manual.

or any other procedure in this manual, read the General Safety

Always di arbitrary function generator.

To preve ESD. (See page 31, Preventing ESD.)

The fol

OTE. If you are disassembling the arbitrary function generator for cleaning,

refer to the inspection and cleaning instructions. (See page 33, Inspection a nd cleaning.)

sconnect the power cord before disassembling any portion of the

nt damage to electrical components, follow the instructions for p reventing

lowing subsections are included:

After repair adjustments – Describes when to perform the adjustment

dures after a repair.

proce

Before disassembly – Describes what you should do before you disassemble

nstrument.

the i

Equipment required for disassembly – Lists the equipment required to remove

install modules.

and

Order of disassembly – Provides a diagram showing the proper order in which

remove and install modules.

Removal procedures for each of the repla ceable modules.

AFG2000 Series Service Manual 37

Removal and installation procedures

After repair a

djustments

After the removal and replacement of a module due to electrical failure, perform the adjustment procedures. (See page 23, Adjustment procedures.)

Before disassembly

Before you disassemble the instrument, do the following:

Review how to prevent ESD damage. (See page 31, Preventing ESD.)

Review the exploded view diagrams in the Replaceable parts section for an overview of how the entire arbitrary function generator is assembled. (See page 69.)

Review the required equipment list to verify that you have the necessary tools to remove and install modules in the arbitrary function generator. (See page 38, Eq

uipment required for disassembly.)

Equipment required for disassembly

e following tools to remove and replace all modules:

Use th

Torque-limiting screwdriver, long shank, 8 lb-in (0.85 N m) range with Torx

d T15 tips

T8 an

16 mm (5/8 inch) deep socket w ith wide center hole

7 mm (9/32 inch) socket

Torque wrench to 30 in-lb (3.3 N m)

Screwdriver with 1/4 inch ﬂat blade

Phillips head screwdriver

iers (all-purpose and needle-nose)

Tweezers

38 AFG2000 Series Service Manual

Removal and installation procedures

Handle remova

l/installation

Required equipment. None.

Removal. To r

1. Place the arbitrary function generator bottom down on a soft surface such as

an antistat

2. Rotate the handle to the vertical position as shown below.

3. Grasp the handle on one side and pull outward until the handle is clear of

the chassis as shown below.

4. Lift the h andle clear of the chassis.

emove the handle, perform the following steps:

ic mat.

Figure 6: Positioning the handle for removal

Installation. To install the handle, perform these steps:

ace the arbitrary function generator bottom down on a soft surfac e such as

1. Pl

an antistatic mat.

ook one side of the handle into the hole on the side of the instrument. (See

2.H

Figure 7.)

rasp the handle on the other side and pull outward until the handle clears the

3.G

chassis, and then slide the handle down so that the handle ﬁts into the hole in the side of the instrument.

AFG2000 Series Service Manual 39

Removal and installation procedures

Case removal/

installation

Required equipment. You will need a torque-limiting Torx T8 screwdriver to

remove and install the case.

Removal. To remove the case, perform the following steps:

1. Place the ar

2. Remove the

3. Use a scre

bitrary function generator on a soft surface such as an antista tic

mat.

rubber boot from the rear panel by pulling it off of the rear of the

instrument. Note the orientation of the boot for reinstallation.

wdriver with a Torx T8 bit to remove the four screws located on

the bottom of the case.

Figure 7: Location of the case retaining screws

40 AFG2000 Series Service Manual

Removal and installation procedures

4. Slide the case o

Figure 8: Removing the rear case

Installa

order. Use the torque-limiting screwdriver to tighten the four retaining screws to 0.49 N m .

tion. To install the rear case, perform the removal procedure in reverse

Front panel knob removal/installation

Required equipment. None.

ff the rear of the arbitrary function generator.

Removal. Firmly grasp the knob and pull it away from the shaft.

llation. Align the keyed knob with the shaft and press the knob onto the shaft.

Insta

NOTE. There is a clip located inside the back of the knob to help retain the knob

on the shaft as shown below. If the knob is loose or will not stay on the shaft, verify that the clip is properly seated inside the knob and that the clip is not broken.

Figure 9: Location of the knob retaining clip

AFG2000 Series Service Manual 41

Removal and installation procedures

Front panel co

ver removal/installation

Required equipment. You will need a torque-limiting Torx T8 screwdriver for

this procedure.

Removal. To remove the front panel, perform the following steps:

1. Remove the h removal/installation.)

2. Remove the

3. Remove the front-panel knob. (See page 41, Front panel knob

removal/

4. Remove the rubber boot from the front panel by carefully pulling it off of the front of

5. Remove the four retaining screws (two on each side) that attach the front cover t

o the chassis.

andle from the instrument. (See page 39, Handle

case. (See page 40, Case removal/installation.)

installation.)

the instrument. Note the orientation of the b oot for reinstallation.

Figure 10: Location of the front panel cover retaining screws

42 AFG2000 Series Service Manual

Removal and installation procedures

6. Pull the front c rubber keypad that attaches to the front cover.

over away from t he instrument, taking care not to damage the

Figure 11: Removing the front panel cover and rubber keypad

lation. To install the front cover, perform the removal procedure in reverse

Instal

order. Use the torque-limiting screwdriver to tighten the four front cover retaining screws to 0.49 N m.

AFG2000 Series Service Manual 43

Removal and installation procedures

LCD display an

d Front Panel board removal/installation

Required equipment. You will need a torque-limiting Torx T8 screwdriver for

this procedure.

Removal. The LCD display is attached to the Front Panel board. To replace the LCD display, you must ﬁrst remove the Front Panel board from the chassis. To remove the LCD display and the Front Panel board, perform the following steps:

1. Remove the front panel cover. (See page 42, Front panel cover removal/installation.)

2. Disconnect the ribbon cable from the Main board by pulling up evenly on both sides of the connector tab to release the cable. (See Figure 12.)

CAUTION. To prevent damage to the cable connector, pull up evenly on both sides

of the connector housing. The housing slides up and down to create a compression ﬁt with the cable, and will lift approximately 1 mm to release the cable. You may need to remove the Power Supply board to gain access to the connector.

The ribbon cable connects to the back of the Front Panel board using the same kind of connector. The following ﬁgure shows the c board in the raised (unlatched) position.

onnector on the back of the

Figure 12: Disconnecting the front-panel ribbon cable from the Main board

44 AFG2000 Series Service Manual

Removal and installation procedures

3. Remove the Fron shown below, and then removing the f our screws attaching the LCD display to the Front Panel board.

CAUTION. To prevent damage to the LCD display, be careful when you remove

the retaining screws holding the LCD display to the Front Panel board. The LCD display will detach from the Front Panel board when the four LCD display retaining s ribbon cable of the LCD display.

crews are removed and will be connected to the board by only the

t Panel board by ﬁrst removing the ﬁve retaining screws

Figure 13: Removing the Front Panel board

AFG2000 Series Service Manual 45

Removal and installation procedures

4. To remove the LC cable from the back of the board.

CAUTION. To prevent damage to the LCD cable connector, pull up evenly on

both sides of the connector housing. The housing pivots up and down to create a compression ﬁt with the cable, and will lift approximately 2 mm to release the cable.

D display from the Front Panel board, disconnect the ribbon

Figure 14: Disconnecting the LCD display cable

allation. To install the Front Panel board, perform the removal procedure in

Inst

reverse order. Be aware of the following:

CAUTION. To prevent damage to the LCD display cable, carefully roll the cable

behind the Front Panel board during assembly. Do not fold or create pressure on the cable.

e the torque-limiting screwdriver to tighten each o f the retaining screws

Us to 0.49 N m.

he blue lines on the ribbon cable between the Front Panel board and the

T Main board will align with the locked connector when the cable has been properly inserted into the connector housing.

46 AFG2000 Series Service Manual

Removal and installation procedures

Front BNC Insu

lator board removal/installation

Required equipment. You will need a 16 mm (5/8 inch) deep socket with wide

center hole, torque wrench, and torque-limiting Torx T8 screwdriver for this procedure.

Removal. To remove the Front BNC Insulator board, perform the following steps:

1. Remove the front panel cover. (See page 42, Front panel cover removal/installation.)

2. Use the torque wrench with a 16 mm (5/8 inch) deep socket with wide center hole to remove the nut and washer from each of the three BNC connectors.

3. Use a screwdriver with Torx T8 tip to remove the two retaining screws on the Front BNC Insulator board.

Installation. To install the Front BNC Insulator board, perform the removal procedure in reverse order. Use the torque-limiting screwdriver to tighten the two board r then use the torque wrench to tighten the three BNC nuts to 1.38 N m.

etaining screws to 0.49 N m. Put the BNC washers on before the nuts, and

AFG2000 Series Service Manual 47

Removal and installation procedures

Front chassis and main chassis separation

Required equipment. You will need a 16 mm (5/8 inch) deep socket with wide

center hole, torque wrench, and torque-limiting Torx T8 screwdriver for this procedure.

Removal. To

1. Remove the front panel cover. (See page 42, Front panel cover

removal/i

2. Disconnect the ribbon cable from the Front Panel board from the Main board as shown b

remove the front chas sis, perform the following steps:

nstallation.)

elow.

Figure 15: Disconnecting the ribbon cable from the Main board

3. Use the torque wrench with a 16 mm (5/8 inch) deep socket with wide center hole to remove the nut and washer from each of the three BNC c onnectors.

4. Remove the power button by grasping the button and pulling it off of the shaft.

48 AFG2000 Series Service Manual

Removal and installation procedures

5. Remove the reta

Figure 16: Location of the front chassis retaining screws

ining screws on each side of the chassis as shown below.

6. Gently pull out the front chassis toward the front to remove the front chassis from the main chassis.

Installation. To install the front chassis, perform the removal procedure in reverse order. Be aware of the following:

Check that the EMI clip for the USB port is correctly installed. (See Figure 17.)

Correctly orient the plastic BNC insulator on each BNC before you install the front chassis. (See Figure 18.)

Use the torque-limiting screwdriver to tighten the four front chassis retaining screws to 0.49 N m.

Put the BNC washers on before the nuts, and then u se the torque wrench to tighten the three BNC nuts to 1.38 N m.

Correctly orient the power button on the shaft. (See Figure 19.)

AFG2000 Series Service Manual 49

Removal and installation procedures

Figure 17: Correct position of the EMI clip for the USB port

Figure 18: Correct orientation of BNC insulator

Figure 19: Correct orientation of power button

50 AFG2000 Series Service Manual

Removal and installation procedures

Power Supply m

odule removal/installation

Required equipment. You will need a torque-limiting Torx T8 and T15 screwdriver

for this procedure.

Removal. To remove the Power Supply module, perform the following steps:

1. Remove the c

2. Disconnect the three power supply cables from the Main board (two at the

front and t

3. Remove the four retaining screws from the Power Supply module and lift the modul

ase. (See page 40, Case removal/installation.)

wo at the rear of the Main board).

e out of the chassis.

Figure 20: Location of the Power Supply module cables and retaining screws

AFG2000 Series Service Manual 51

Removal and installation procedures

Installation.

in reverse order. Be aware of the following:

Be sure that th of the stand-off posts. (See Figure 21.)

Tighten the

To install the Power Supply module, perform the removal procedure

e holes on the b ottom of the power supply shield ﬁ tovereach

four retaining screws on the Power Supply module to 0.88 N m.

Figure 21: Positioning the power supply shield on the stand-off posts

52 AFG2000 Series Service Manual

Removal and installation procedures

Fan removal/i

nstallation

Required equipment. You will need a torque-limiting Torx T15 screwdriver and

tweezers for this procedure.

Removal. To remove the fan from the rear chassis, perform the following steps:

1. Remove the P removal/installation.)

2. Disconnec

ower Supply module. (See page 51, Power Supply module

t the fan cable from the Main board.

Figure 22: Location of the fan c able

3. Check the serial number of the instrument you are servicing if it is an AFG2021 model. If the number is C010243 or earlier, proceed to step 4. If the number is C010244 or greater, proceed to step 6.

If you are servicing an AFG2021-SC or AFG2021-BR, proceed to step 6.

4. Use needle-nose pliers to lift up the edge of the rear panel label at the bottom right corner.

AFG2000 Series Service Manual 53

Removal and installation procedures

Figure 23: Location to start removing the rear panel label on the AFG2021

5. Slowly peel back the label to minimize the glue residue left on the chassis while removing the label.

Figure 24: Peeling off the rear panel label of the AFG2021

54 AFG2000 Series Service Manual

Removal and installation procedures

6. Locate the two f lift the fan out of the chassis.

NOTE. Step 6 only applies to these models: AFG2021 with serial numbers of

C010244 or greater, AFG2021-SC, and AFG2021-BR..

Installation. To install the fan, perform the removal procedure in reverse order. Be aware of the following:

Tighten the two self-tapping retaining screws for the fan to 1.13 N m.

When you install the new rear panel label, u se the two holes shown below to align the label on the rear panel. (Only applies to AFG2021 models with a serial number of C010243 or earlier.)

an retaining screws on the rear panel, remove them, and

Figure 25: Aligning the rear panel label (AFG2021 with Option GL shown)

AFG2000 Series Service Manual 55

Removal and installation procedures

AC line ﬁlter r

emoval/installation

Required equipment. You will need a torque-limiting Torx T15 screwdriver for

this procedure.

Removal. To remove the AC line ﬁlter, perform the following steps:

1. Remove the P removal/installation.)

2. Disconnec

3. Remove the two retaining screws attaching the AC line ﬁlter to the chassis

and pull t

Installation. To install the AC line ﬁlter, perform the removal procedure in reverse order. Be aware of the following:

Tighten the two AC line ﬁlter retaining screws for the fan to 0.88 N m.

If you removed the earth lead to the chassis, tighten the retaining screw to 0.88 N m.

Reconnect the AC line ﬁlter cables as shown below.

ower Supply module. (See page 51, Power Supply module

t the cables from the AC line ﬁlter.

he ﬁlter out from the chassis.

Figure 26: AC line ﬁlter cable connections

56 AFG2000 Series Service Manual

Removal and installation procedures

Main board rem

oval/installation

Required equipment. You will need a torque-limiting Torx T8 and

T15 screwdriver, a torque wrench, a 16 mm (5/8 inch) deep socket, 7 mm socket, and needle-n

Removal. To remove the Main board, perform the following steps:

1. Remove the Power Supply module. (See page 56, AC line ﬁlter removal/installation.)

2. Separate the front chassis and main chassis. (See page 48, Front chassis and main chassis separation.)

3. Disconnect the fan cable from the Main board. (See Figure 22 on page 53.)

4. Remove t

5. Use needle-nose pliers to lift up the edge of the rear panel label at the bottom

right c

6. Slowly peel back the label to minimize the glue residue while removing the

. (SeeFigure24onpage54.)

label

7. AFG2021 with Option GL only: Remove the two jack screws and washers

ining the GPIB connector.

reta

ose pliers for this procedure.

he cable between the Main board and the AC line ﬁlter.

orner. (See Figure 23 on page 54.)

8. Remove the two screws retaining the BNC cover plate.

9. Remove the BNC insulator from each BNC and then remove the BNC nuts

and washers.

10. Remove the two screws retaining the Rear BNC Insulator board.

AFG2000 Series Service Manual 57

Removal and installation procedures

11. Remove the six s chassis.

crews and four stand-offs retaining the Main board to the

Figure 27: Location of Main board retaining screws and s tand-offs

12. Carefully slide the Main board forward until the connectors clear the rear

l and then lift the board out of the instrument.

pane

58 AFG2000 Series Service Manual

Removal and installation procedures

Installation.

order. Be aware of the following:

NOTE. After you replace the Main board, you must reset the instrument serial

number. (See page 29, Resetting the serial number.).

Correctly orient the plastic BNC insulator on each front BNC before you install the Main board in the chassis. (See Figure 18 on page 50.)

Tighten the Rear BNC Insulator b oard retaining screws to 0.88 N m.

Attach the wave washers, then the nuts, and then the BNC insulators to the rear BNCs before you install the BNC cover plate. (See Figure 28.)

Tighten the BNC cover plate retaining screws to 0.49 N m.

AFG2021

to 0.88 N m .

Tighte Main board stand-offs for the Power Supply module to 0.49 N m.

To install the Main board, perform the removal procedure in reverse

with Option GL only: Tighten the GPIB connector jack screws

nthesixMainboardretainingscrewsto0.88Nm;tightenthefour

Figure 28: Installing the rear BNC washers, nuts, and insulators

AFG2000 Series Service Manual 59

Removal and installation procedures

60 AFG2000 Series Service Manual

Troubleshooting

This section contains the following information to help you isolate faulty modules in a AFG2000 Series Arbitrary Function Generator.

Troubleshooting trees – Show how to ﬁnd and isolate faulty modules.

Diagnostics – Describes the diagnostics supplied with the arbitrary function generator, its operation, and status messages.

After you troubleshoot and identify a faulty part, use the Removal and installation procedures section to exchange the modules. (See page 37.)

Troubleshooting tools and equipment

You may need the following tools and equipment to troubleshoot the arbitrary function generator.

Table 4: Troubleshooting equipment

Tools and equipment Example

Digital multimeter (DMM)

Oscilloscope with probe Tektronix TDS1000 or TDS2000 series

3.5 or greater digit DMM

loscope

oscil

Troubleshooting tree

To isolate a problem to a speciﬁc troubleshooting procedure, use the following troubleshooting tree. The tree makes use of internal diagnostic routines to speed fault isolation to a module.

WAR NI NG . To prevent electrical shock, do not touch the heat sink of the Power

pply module. There are potentially dangerous voltages present on the heat sink

Su of the Power Supply module.

AFG2000 Series Service Manual 61

Troubleshooting

Figure 29: Troubleshooting tree

62 AFG2000 Series Service Manual

Diagnostics

Troubleshooting

Power-on diagnostic test

Utility me

nu diagnostic

test

When you power on the instrument, it automatically executes a diagnostic test for all the diagnostics items before the Startup screen appears.

When an error is detected, the diagnostic test displays an error message. If you see such an error message, press the OK button to proceed with the next step. The generator software starts. When the instrument contains an unresolved error, the test cannot be conducted normally.

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

Prerequ

Procedure. Perform the following steps to run the Utility menu diagnostic test:

1. Select Execute Diagnostics in the Utility menu (Utility > -more- >

isites. Before you run the Utility menu diagnostic test:

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

ure.

proced

The instrument must be operating at an ambient temperature between +0 °C and +5

Diagnostics/Calibration > Execute Diagnostics).

0°C.

2. Wait until the test is completed.

3. Ver

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

ify that the diagnostic test passed.

If the diagnostic completes without ﬁnding any problems, the message

ASSED”isdisplayed.

“P

When an error is detected during diagnostic execution, the instrument

hows an error code. (See page 65, Diagnostic error codes.)

AFG2000 Series Service Manual 63

Troubleshooting

Calibration diagnostic test

This procedure correctly.

Prerequisites. Before you run the Calibration d iagnostic test:

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.

Procedure. Perform the following steps to run the internal routines that conﬁrm basic functionality and proper adjustment:

WARNING.

calibration. If the power is turned off while the calibration is in progress, data stored in internal nonvolatile memory may be lost.

1. Select the Execute Calibration in the Utility menu (Utility > -more- > Diagnostics/Calibration > Execute Calibration).

2. Wait until the test is completed.

3. Verif

uses internal routines to verify that the instrument is operating

To prevent the loss of data, do not turn off the power while executing

y that the diagnostic test passed.

If the diagnostic completes without ﬁnding any problems, the message

SED”isdisplayed.

“PAS

When an error is detected during diagnostic execution, the instrument

ws an error code. (See page 65, Diagnostic error codes.)

sho

4. Press any front panel button to exit from the calibration test.

64 AFG2000 Series Service Manual

Troubleshooting

Diagnostic error codes

If a diagnostic

test detects a malfunction, the character string “Fail” and the associated error code is displayed. The following table describes the error codes and lists the related modules.

Table 5: Error codes

Error code Description

— Calibration Error —

1101

1103

1105

1201

1203

1205

1207

1209

1211

1301

1401

1403

1405

2100

2101

2102

2201

2203

Internal offset calibration failure

Output offset calibration failure

Output gain Calibration failure

x3dB attenuator calibration failure

x6dB attenuator calibration failure

x10dB attenuator calibration failure

x20dB 1 attenuator calibration failure

x20dB 2 attenuator calibration failure

Filter calibration failure

Sine Flatness calibration failure

ASIC TINT calibration failure

ASIC SGEN calibration failure

ASIC clock duty calibration failure

— Diagnostics Errors —

Calibration data not found

Calibration data checksum

Calibration data invalid

ASIC1 memory failure

ASIC1 Overheat

— Output Diagnostics Errors—

2301

2303

2305

2401

2403

2405

2407

2409

2411

2413

2501

Internal offset failure

Output offset failure

Output gain failure

x3dB attenuator failure

x6dB attenuator failure

x10dB attenuator failure

x20dB 1 attenuator failure

x20dB 2 attenuator failure

Filter failure

x20dB 3 attenuator failure

Sine Flatness failure

AFG2000 Series Service Manual 65

Troubleshooting

66 AFG2000 Series Service Manual

Diagrams

The diagram in this section shows how the modules in the generator connect together.

Figure 30: Interconnections for the AFG2021 (GPIB and LAN only on AFG2021 with Option GL)

AFG2000 Series Service Manual 67

Diagrams

68 AFG2000 Series Service Manual

Replaceable parts

This section contains a list of the replaceable modules for the arbitrary function generators. Use this list to identify and order replacement parts.

Parts ordering information

Replacement parts are available through your local Tektronix ﬁeld ofﬁce or representative.

Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the beneﬁt of the latest circuit improvements. Therefore, when ordering parts, it is important to include the follo

If you order a part that has been replaced with a different or improved part, your local Tektronix ﬁeld ofﬁce or representative will contact you concerning any change in part number.

wing information in your order.

Part number

Instrument type or model number

Instrument serial number

Instrument modiﬁcation n umber, if applicable

AFG2000 Series Service Manual 69

Replaceable parts

Using the replaceable parts list

This section contains a list of the mechanical and/or electrical components that are replaceable for the arbitrary function generator. Use this list to identify and order replacement parts. The following table describes each column in the parts list.

Table 6: Parts list column descriptions

Column Column name Description

2 Tektronix part number

3 Instrument model

4 and 5

Figure & index number Items in this section are referenced by component number.

Use this part number when ordering replacement parts from Tektronix.

This indicates the model of instrument that uses this item.

Serial number Column four indicates the serial number at which the part was ﬁrst effective. Column

ﬁve indicates the serial number at which the part was discontinued. No entries indicates the part is good for all serial numbers.

Qty This indicates the quantity of parts used.

Name & description An item name is separated from the description by a colon (:). Because of space

limitations, an item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook H6-1 for further item name identiﬁcation.

Abbre

viations

Abbreviations conform to American National Standard ANSI Y1.1-1972.

70 AFG2000 Series Service Manual

Replaceable parts

Table 7: Front p

Fig. & index no.

31- Front panel assembly exploded diagram

-1 367-0558-XX 1

-2 200-5159-XX 1

-3 366-0896-XX 1

-4 366-0863-XX 1

-5

-6 211-0101-XX 4

-7

-8 202-0486-XX 1

-9 211-1129-XX 11

-10 850-0201-XX 1

-11 260-2934-XX 1

-12 220-0265-XX 3

-13 210-1544-XX 3

-14 878-0575-XX 1

-15 878-0585-XX 1

anel assembly replaceable parts (See Figure 31.)

Serial Tektronix part no.

335-2559-XX 1

335-2680-XX 1

335-2681-XX 1

335-2682-XX 1

335-2683-XX 1

335-2684-XX 1

335-2685-XX 1

335-2686-XX 1

335-2687-XX 1

335-2688-XX 1

335-2715-XX 1

335-3000-XX 1

335-3003-XX 1

335-2560-XX 1

335-3002-XX 1

335-2999-XX 1

no.

effective

Serial no. discont’d Qty. Name & descrip

tion

HANDLE, CARRYING; TEK SILVER GRAY

COVER, FRONT BOOT CAP TEK SILVER GRAY

PUSH BUTTON, POWER

ASSEMBLY, KNOB WITH RETAINER CLIP; 0.685 DIAMETER

LABEL, FRONT PANEL, AFG2021 ENGLISH

LABEL, FRONT PANEL, AFG2021 FRENCH

LABEL, FRONT PANEL, AFG2021 ITALIAN

LABEL, FRONT PANEL, AFG2021 GERMAN

LABEL, FRONT PANEL, AFG2021 SPANISH

LABEL, FRONT PANEL, AFG2021 JAPANESE

LABEL, FRONT PANEL, AFG2021 SIMPLIFIED CHINESE

LABEL, FRONT PANEL, AFG2021 STANDARD CHINESE

LABEL, FRONT PANEL, AFG2021 KOREAN

LABEL, FRONT PANEL, AFG2021 RUSSIAN

LABEL, FRONT PANEL, AFG2021 PORTUGUESE

LABEL, FRONT PANEL, AFG2021-SC

LABEL, FRONT PANEL, AFG2021-BR

SCREW, MACHINE; 4-40 X 0.25, FLH, 100 DEG, ZINC

LATED STEEL, T8

LABEL, NOMENCLATURE AFG2021

LABEL, NOMENCLATURE AFG2021-BR

LABEL, NOMENCLATURE AFG2021-SC

CASE, FRONT, PC/ABS, PLASTIC BLEND, TEK GRAY, SAFETY CONTROLLED

SCREW, MACHINE; 2-56 X 0.312L, TORX T8, PAN HEAD, STEEL, ZINC FINISH

ASSEMBLY; DISPLAY, COLOR

SWITCH, KEYPAD, FRONT PANEL

NUT, PLAIN, HEX; 0.5-28 X 0.625 HEX , BRS, NKL PL

WASHER, SPRING; 0.610 OD X 0.490 ID X 0.007 THK, WAVE SHAPE, STAINLESS STEEL

CIRCUIT BOARD ASSY; FRONT BNC INSULATOR; 389442300; UNTESTED

CIRCUIT BOARD ASSY; FRONT PANEL (4 LAYERS); 389446100; UNTESTED

AFG2000 Series Service Manual 71

Replaceable parts

Figure 31: Front panel assembly exploded diagram

72 AFG2000 Series Service Manual

Replaceable parts

Table 8: Chassi

Fig. & index no.

32-

-01 441-2661-00 1

-02 211-0101-00 8

-03

-04

-05 441

-06 200

-07 342-1135-00

-08 131-6521-00 1

-10 174-6018-00 1

-11

-12 213-1152-00 4 HEX NUT

-13 342-1228-00 1

-14 119-7271-03 1

sassemblyreplaceableparts(SeeFigure32.)

Serial Tektronix part number

441-2648-

441-2647-00 1

335-2582-01

335-260

335-2582-00

335-2

335-3004-00 1

11-1272-00

679-6514-03 1

679-6531-02 1

3-01

603-00

-2651-00

-5152-00

no.

effective

C010244

Serial no. discont’d Qty. Name & descrip

C01024

C010243

Chassis asse

FRONT SHIEL

SCREW, MACH PLATED STEEL, T8

CHASSIS, ASSEMBLY MAIN CHASSIS, SIMPLE VERSION, SAFETY CONTROLLED

CHASSIS, ASSEMBLY MAIN CHASSIS, OPTIO N GL VERSION,

LABEL, R LEXAN, W/ADHESIVE BACK, SAFETY CONTROLLED

LABEL, REAR PANEL FULL, OPTION GL VERSION,

0.010 PC FILM, LEXAN, W/ADHESIVE BACK, SAFETY CONTRO

LABEL, LEXAN, W/ADHESIVE BACK, SAFETY CONTROLLED

LABEL, REAR PANEL FULL, OPTION GL VERSION,

0.010 PC FILM, LEXAN, W/ADHESIVE BACK, SAFETY ROLLED

CONT

L, REAR PANEL AFG2021-SC, AFG2021-BR, SAFETY

LABE CONTROLLED

ENCLOSURE TOP, SAFETY CONTROLLED

COVER, REAR BOOT CAP, TEK BLUE; SAFETY CONTROLLED

INSULATOR, BSHG: NYLON, 0.509 X 0.470 D HOLE X 0.687

X 0.035 T

ONTACT, ELEC; EMI, CLIP-ON, 0.38 L X 0.460 W (2

C CONTACTS) X 0.45 HIGH, ELECTROLESS NICKEL PLATE

SCREW, MACHINE; 6-32 X 0.250, PNH, STL, ZNPL, T-15 TORX DR

FFC CABLE ASSY, PITCH = 0.5MM FRONT PANEL TO MAINBOARD

CIRCUIT BOARD ASSY, SIMPLE VERSION; A70, CPU, MAIN BOARD; 389442400; UNTESTED

CIRCUIT BOARD ASSY, OPTION GL VERSION; A70, CPU, MAIN BOARD; 389442400; UNTESTED

PWR INSULATOR (PROTECTION COVER)

POWER SUPPLY; AC-DC; 150 W MAX IN; 87-264 VAC 47-63 HZ, 100-127 VAC 360-440 HZ IN; +4.3V @ 2.3A, +7.5V @

3.2A, +18V @ 2A, -18V @ 2A OUT; SAFETY CONTROLLED

tion

mbly exploded diagram

DING COVER; 0.039IN THICK AL 5052 H32

INE; 4-40 X 0.25, FLH, 100 DEG, ZINC

SAFETY CONTROLLED

EAR PANEL, SIMPLE VERSION, 0.010 PC FILM,

LLED

REAR PANEL, SIMPLE VERSION, 0.010 PC FILM,

AFG2000 Series Service Manual 73

Replaceable parts

Table 8: Chassis assembly replaceable parts (See Figure 32.) (cont.)

Fig. & index no.

-15 174-5926-00 1

-16 210-1539-00 1

-17 196-3496-00 1

-18 119-7255-00 1

-19 119-7780-XX 1

-20 213-1150-00 2

-21 210-0056-00 2

-22 213-1061-00 2

-23 878-0574-00 1

-24 210-1544-XX 2

-25 220-0265-00 2

-26 386-7634-00 1

-27 131-6363-00 1

Tektronix part number

Serial no. effective

Serial no. discont’d Qty. Name & description

CA ASSY, SP (INLE T, POWER)

WASHER, LOCK; #8 INTL, 0.02 THK, STEEL, ZINC FINISH

LEAD, ELECTRICAL; 18 AWG, 4.0 L, 5-4 SAFETY CONTROLLED

FILTER, EMI; AC LINE FILTER;3.0A, 115-250VAC, 50/60HZ, IEC INPUT, FAST-ON/SOLDER LUG OUTPUT, CHASSIS MOUNT, SAFETY CONTROLLED

FAN, DC ASSEMBLY

SCREW, FLAT HEAD, T15 FAN SCREW, M5X10

WASHER, LOCK; #10 SPLIT, 0.047 THK, SI BRZ NP

JACKSCREW; 6-32 EXT THD, M3.5 X 0.6-6 INT THD, ZINC PLATED STEEL

CIRCUIT BOARD ASSY; REAR BNC INSULATOR; 389442200; UNTESTED

WASHER, SPRING; 0.610 OD X 0.490 ID X 0.007 THK, WAVE SHAPE, STAINLESS STEEL

NUT, PLAIN, HEX; 0.5-28 X 0.625 HEX, BRS, NKL PL

BNC COVER

EMI GASKET; GROUNDING, 0.320 L X 0.365 W (2 CONTACTS) X 0.110 DEEP, ELECTRO LESS NICKEL PLATE

74 AFG2000 Series Service Manual

Replaceable parts

Figure 32: Chassis assembly exploded diagram

AFG2000 Series Service Manual 75

Tektronix AFG2000, AFG2021 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual