Tektronix 4000 SERIES User manual

Type
User manual
Service Manual
Tektronix 4000 Series
Digital Phosphor Oscilloscopes
071-2137-- 00
This document applies to firmware version 2.00
and above.
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com
Copyright © Tektroni x. All rights reserved. Licensed software products are owned by Tekt ronix or its subsidiaries or
suppliers, and are protected by national copyright laws and international treaty provisions.
Tektroni x products are covere d b y U. S. and foreig n patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
TEKT RONIX and TEK are registered trademarks of Tektronix, Inc.
TekLink is a trademark of Tektronix, Inc.
Tektroni x is an authorized licensee of the CompactFlash® trademark.
Contacting Tektronix
Tektroni x, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
H In North America, cal l 1-800-833-9200.
H Worldwide, visit www.tektronix.com to find contacts in your area.
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
i
Table of Contents
General Safety Summary iii...................................
Service Safety Summary v....................................
Environmental Consid erations vii...............................
Preface ix...................................................
Manual Conventions ix..............................................
Related Documentation ix...........................................
Operating Information 1--1.....................................
Theory of Operation 2--1.......................................
Block Diagrams 2--1.................................................
Power Supply 2--2...................................................
I/O Board 2--2......................................................
Main Board 2--2.....................................................
Front--Panel Board 2--3...............................................
Adjustment Procedures 3--1.....................................
Required Equipment 3--1..............................................
Overview of t he Adjustment Process 3--2.................................
Factory Adjustment Procedure 3--4......................................
Completing the Procedure 3-- 8.........................................
Maintenance 4--1..............................................
Preventing ESD 4 -- 1.................................................
Inspection and Cleaning 4-- 1...........................................
General Care 4--2................................................
Interior Cleaning 4--2.............................................
Exterior Cleaning 4--2............................................
Overview of Re moval Procedures 4--6...................................
Removal Procedures 4--8..............................................
Troubleshooting 4--12.................................................
Troubleshooting Procedure 4--13.........................................
Unpacking and Repa cking Instructions 4--16...............................
Mechanical Parts List 5--1......................................
Parts Ordering Information 5-- 1.........................................
Using the Replaceable Parts List 5-- 2....................................
Table of Contents
ii
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
List of Tables
Table 4--1: External inspection check list 4--3......................
Table 4--2: Internal inspection check list 4--4......................
List of Figures
Figure 2--1: Oscilloscope modu le interconnections 2--1...............
Figure 3--1: Rear panel 3--4.....................................
Figure 3--2: Utility page menu 3--5...............................
Figure 3--3: Calibration selection 3--6.............................
Figure 3--4: Factory information dialog 3--6.......................
Figure 3-- 5: Digital channel input 3--10............................
Figure 4--1: Locator for trim and cabin et removal 4--7...............
Figure 4--2: Locator for in ternal mod ules 4--8......................
Figure 4--3: Primary tr oubleshooting pr ocedure 4--13................
Figure 4-- 4: AC power supply troubleshooting procedure 4--14.........
Figure 4--5: Module isolation troubleshooting procedure 4--15.........
Figure 5--1: Exploded view, case 5--5..............................
Figure 5--2: Exploded view: DPO4000 front pan el and display,
4-channel instruments 5--7...................................
Figure 5--3: Exploded view: MSO4000 front pan el and display,
4-channel instruments 5--9...................................
Figure 5--4: Exploded view: DPO4000 front pan el and display,
2-channel instruments 5--11...................................
Figure 5--5: Exploded view: MSO4000 front pan el and display,
2-channel instruments 5--13...................................
Figure 5--6: Exploded view: DPO4000 Power Supply
and I/O board 5--15.........................................
Figure 5--7: Exploded view: MSO4000 Power Supply
and I/O board 5--17.........................................
Figure 5--8: Exploded view: DPO4000 Main board,
Inverter board, and side fans 5--19.............................
Figure 5--9: Exploded view: MSO4000 Main board,
Inverter board, and side fans 5--21.............................
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
iii
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.
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Connect and Disconnect Pr operly. Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
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 inputs are not rated for connection to mains or C ategory II, III, or IV
circuits.
Connect the probe reference lead to earth ground only.
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.
Do Not Operate With Suspect ed Failures. If you suspect 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 Vent ilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
ToAvoidFireor
Personal Injury
General Safety Summary
iv
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
These terms may appear on the product:
H DANGER indicates an injury hazard immediately accessible as you read the
marking.
H WARNING indicates an injury hazard not immediately accessible as you
read the marking.
H CAUTION indicates a hazard to property including the product.
The following symbols may appear on the product:
CAUTION
Refer to Manual
Protective Ground
(Earth) Terminal
Chassis Ground
Mains Connected
ON (Power)
Push button OUT
Push button
IN
Terms in this Manual
Symbols and Terms
on the Product
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
v
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, switch off the instrument power, then
disconnect the power cord from the mains power.
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.
Service Safety Summary
vi
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
vii
Environmental Considerations
This section provides information about the environmental impact of the
product.
Observe the following guidelines when recycling an instrument or component:
Equipment Recycling. Production of this equipment required the extraction and
use of natural resources. The equipment may contain substances that could be
harmful to the environment or human health if improperly handled at the
product’s end of life. In order to avoid release of such substances into the
environment and to reduce the use of natural resources, we encourage you to
recycle this product in an appropriate system that will ensure that most of the
materials are reused or recycled appropriately.
The symbol shown to the left indicates that this product
complies with the European Union’s requirements
according to Directive 2002/96/EC on waste electrical and
electronic equipment (WEEE). For information about
recycling options, check the Support/Service section of the
Tektronix Web site (www.tektronix.com).
Mercury Notification. This product uses an LCD backlight lamp that contains
mercury. Disposal may be regulated due to environmental considerations. Please
contact your local authorities or, within the United States, the Electronics
Industries Alliance (www.eiae.org) for disposal or recycling information.
This product has been classified as Monitoring and Control equipment, and is
outside the scope of the 2002/95/EC RoHS Directive. This product is known to
contain lead, cadmium, mercury, and hexavalent chromium.
Product End-of-Life
Handling
Restriction of Hazardous
Substances
Environmental Considerations
viii
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
ix
Preface
This service manual provides information that you need to troubleshoot,
disassemble, and replace parts on the Tektronix 4000 Series Digital Phosphor
Oscilloscopes.
Manual Conventions
This manual uses certain conventions that you should become familiar with
before attempting service.
Throughout this manual, any replaceable component, assembly, or part is
referred to by the term module. A module is composed of electrical and
mechanical assemblies, circuit boards, interconnecting cables, and
user-accessible controls.
This manual refers to any field-replaceable assembly or mechanical part
specifically by its name or generically as a replaceable part. In general, a
replaceable part is any circuit board or assembly, such as the hard disk drive, or a
mechanical part, such as the I/O port connectors, that is listed in the replaceable
parts list.
Symbols and terms related to safety appear in the General Safety Summary found
at the beginning of this manual.
Related Documentation
To read about Use these docum ents
Installation and Operation Tektronix 4000 Series Digital Phosphor Oscilloscopes User
Manual (available in 11 languages)
Specifications and Performance Tektronix 4000 Series Technical Reference (PDF only)
Programmer Commands Tektronix 4000 Series Programmer Manual (PDF only)
Analysis and Connectivity Tools Getting Start ed wit h OpenChoice® Solutions Manual
Modules
Replaceable Parts
Safety
Preface
x
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
To read about Use these documents
Installing and testing applica-
tions modules
Tektronix 4000 Series Appli cation Modules Installation
Instructions M anual
Oscilloscope calibrator Fluke Oscilloscope Calibrator Manual at
http://us.fluke.com
Operating Information
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
1-1
Operating Information
For information on installing and operating your DPO4000 or your MSO4000
Series Digital P hosphor Oscilloscope, refer to the Tektronix 4000 Series Digital
Phosphor Oscilloscopes User Manual.
This manual is available, in 11 languages, on the Web at www.tektronix.com.
Operating Information
1-2
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
Theory of Operation
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
2-1
Theory of Operation
This chapter describes the electrical operation of the oscilloscope to the module
level. Figure 2--1 s hows the oscilloscope module interconnections.
Block Diagrams
Power
Supply
Main board
Front Panel
Input ports for
application
modules
Attenuator circuit
Display
back light
inverter
power
LCD
Display
Ch 1
Ch 1
Ch 2
Ch 2
Ch 3
Ch 4
2-channel oscilloscopes
3 Fans
AC Line
4-channel oscilloscopesAux in
Ethernet
port
I/O Board
CompactFlash
Port
Trigger
Out
J100
J570
J571
J850
J930
Bezel
buttons
J130
J420, J421
J0480
J1
USB
J120
J510
Aux in
J680
XGA
Video
port
J170
J440 J610
J140
Figure 2- 1: Oscilloscope module interconnections
Theory of Operation
2-2
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
Power Supply
The Power Supply board converts AC line voltage to +12 V to power for all
internal circuits.
I/O Board
The I/O board contains USB ports, a CompactFlash port, an Ethernet port
(LAN), an XGA Video port, and a Trigger Out BNC connector.
Main Board
The Main board module contains the following functions:
The Acquisition system begins with the analog signal path and ends with a
digitized signal in memory. The signal enters a channel input, and then passes
through an attenuator and preamplifier. The analog signal from each preamplifier
goes through a digitizer, a time base controller, and then into acquisition
memory. The analog signal from each preamplifier is also distributed to a trigger
circuit.
The Trigger system processes the analog signals from the preamplifiers and
sends trigger information to the time--base controller. Advanced trigger functions
are enabled only when the appropriate application modules and supporting
software are installed.
The Display system combines live waveform data from acquisition memory with
menus and text, and s tores this information in display memory. It then uses this
data to refresh the XGA display module (LCD).
Acquisition System
Trigger System
Display System
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67
  • Page 68 68
  • Page 69 69
  • Page 70 70
  • Page 71 71
  • Page 72 72
  • Page 73 73
  • Page 74 74
  • Page 75 75
  • Page 76 76
  • Page 77 77
  • Page 78 78

Tektronix 4000 SERIES User manual

Type
User manual

Ask a question and I''ll find the answer in the document

Finding information in a document is now easier with AI