Tektronix DPO3012, DPO3014, DPO3032, DPO3034, DPO3052 Service
...
xx
MSO3000 and DPO3000 Series
ZZZ
Digital Phosphor Oscilloscopes
Service Manual
*P071266700*
071-2667-00
xx
MSO3000 and DPO3000 Series
ZZZ
Digital Phosphor Oscilloscopes
Service Manual
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.
Revision B
www.tektronix.com
071-2667-00
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.
TekLink is a trademark of Tektronix, Inc.
Tektronix is an authorized licensee of the CompactFlash® trademark.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O . Bo x 50 0
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
World wide , visi t www.tektronix.com to find contacts in your area.
Table of Contents
General safety summary .. ................................ ................................ ........................ iv
Service safety summary........................................................................................... vi
Preface ............................................................................................................. vii
Manual Conv
Related Documentation ..................................................................................... vii
Operating Information ............................................................................................. 1
Theory of Operation... ................................ ................................ ............................. 3
Block Diagram ................................ ................................ ................................. 3
Power Supply................................................................................................... 4
I/O Boar
Attenuator Board.......... ................................ ................................ ..................... 4
Main Board..................................................................................................... 4
Front-Panel Board .. ................................ .................................. ......................... 5
Adjustment Procedures ............................................................................................ 7
Required Equipment.......................... ................................ ................................. 7
view of the Adjustment Process........................................................................ 8
Over
Factory Adjustment Procedure ............................................................................... 9
Completing the Procedure ......... .................................. ................................ ........ 12
Maintenance........................................................................................................ 17
Preventing ESD ............................................................................................... 17
Inspection and Cleaning.................... ................................ .................................. 17
erview of Removal Procedures .......................... ................................ ................ 21
Ov
Removal Procedures.......................................................................................... 22
Troubleshooting................................... ................................ ............................ 28
Troubleshooting Procedure .... ................................ ................................ .............. 29
Unpacking and Repacking Instructions ........................ ................................ ............ 31
Replaceable Parts List................... ................................ ................................ .......... 33
Parts Ordering Information .................................................................................. 33
Using the Replaceable Parts List............................................................................ 35
Index
entions...................... ................................ ................................ ... vii
d ....................................................................................................... 4
MSO3000 and DPO3000 S eries Digital Phosphor Oscilloscopes Service Manual i
Table of Contents
List of Figure
Figure 1: Oscilloscope module interconnections .. . .. .. . .. .. . .. .. . .. .. . . . .. . .. .. .. . .. .. . .. .. . .. .. . .. .. . .. .. . .. . 3
Figure 2: Re
Figure 3: Utility page menu . . .. .. . .. .. . .. .. . .. .. . .. .. . . . .. . .. .. . . . .. . .. .. .. . .. . .. .. .. . .. . .. .. .. . .. . .. .. .. . .. . . . .. 10
Figure 4: Calibration selection............................. .................................. .................... 10
Figure 5: Factory information dialog............................................................................ 11
Figure 6: Digital channel input (MSO only) ................................................................... 14
Figure 7: Locator for internal modules.............. ................................ ............................ 21
Figure 8:
Figure 9: Fan cable dress ........................... ................................ .............................. 24
Figure 10: Disconnecting the main board ...................................................................... 26
Figure 11: Display cable shield in place ........ ................................ ................................ 27
Figure 12: Exploded view: rear case and rear chassis......................................................... 37
Figure 13: Exploded view: I/O and main boards .............................................................. 39
e 14: Exploded view: Front panel and power supply ......... .................................. ........ 41
Figur
Figure 15: Exploded view: Front panel labels . ................................ ................................ 43
Figure 16: Exploded view: Main board shield and attenuator board .................... .................... 45
Figure 17: Exploded view: Front chassis and LCD assembly................................................ 47
Figure 18: Exploded view: front panel board and front case................................................. 49
ar panel......................... ................................ .................................. ..... 9
Reconnecting the fan cable ........................................................................... 24
s
ii MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual
List of Tables
Table 1: External inspection check list.......................................................................... 19
Table 2: Int
Table 3: Replaceable parts list: Rear case and rear chassis ................................................... 36
Table 4: Replaceable parts list: I/O and main boards ..................... ................................ .... 38
Table 5: Replaceable parts list: Front panel and power supply .... ................................ .......... 40
Table 6: Replaceable parts list: Front panel labels ............................ ................................ 42
Table 7: Replaceable parts list: Attenuator ..................................................................... 44
Table 8: R
Table 9: Replaceable parts list: Front panel and front case ................................................... 48
Table 10: Replaceable parts list: Standard accessories ....................................................... 50
Table 11: Replaceable parts list: Optional accessories ........... ................................ ............ 50
ernal inspection check list............. ................................ .............................. 20
eplaceable parts list: Front chassis and LCD... ................................ .................... 46
Table of Contents
MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual iii
General safety summary
General safet
To avoid fir
e or personal
injury
ysummary
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.
Connect a
leads while they are connected to a voltage source.
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 a void 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.
llowing safety precautions to avoid injury and prevent damage to
ential hazards, use this product o nly as specified.
power cord. Use only the power cord specified for this product and
nd disconnect properly. Do not connect or disconnect probes o r test
eproduct.This product is grounded through the grounding conductor
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.
Power disconnect. The power cord disconnects the product from the power source.
Donotblockthepowercord;itmustremain accessible to the user at all 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.
iv MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual
General safety summary
Terms in this manual
Symbols and terms on the
product
These terms may
WAR N ING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
These terms may appear on the product:
DANGER in
the marking.
WAR N IN G
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.
MSO3000 and DPO3000 S eries Digital Phosphor Oscilloscopes Service Manual v
Service safety summary
Service safet
ysummary
Only qualifie
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 o ff 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 p
test leads before removing protective panels, soldering, or replacing components.
To a voi
d personnel should perform service procedures. Read this Service
roduct. Disconnect power, remove battery (if applicable), and disconnect
d e lectric shock, do not touch exposed connections.
vi MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual
Preface
Manual Conventions
This service manual provides information that you need to troubleshoot,
disassemble, and replace parts on the Tektronix MSO3000 and DPO3000 Series
Digital Phos
phor Oscilloscopes.
Modules
Replaceable Parts
Safety
Related Documentation
This manua
before attempting service.
Throughout this manual, any replaceable component, assembly, or part is referred
to by the t
A module is composed of electrical and mechanical assemblies, circuit boards,
interco
This manual refers to any field-replaceable assembly or mechanical part
specifically by its name or generically as a replaceable part. In general, a
repla
mechanical part, such as the I/O port connectors, that is listed in the replaceable
parts list.
Symb
To read about Use these documents
Installation and Operation MSO3000 and DPO3000 Series Oscilloscopes User
ecifications and Performance
Sp
Programmer Commands MSO3000 and DPO3000 Series Programmer Manual
Analysis and Connectivity Tools Getting Started with OpenChoice ® Solutions Manual
Installing and testing applications
modules
Oscilloscope calibrator Fluke Oscilloscope Calibrator Manual at
l uses certain conventions that you should become familiar with
erm module.
nnecting cables, and user-accessible controls.
ceable part is any circuit board or assembly, such as the hard disk drive, or a
ols and terms related to safety appear in the General Safety Summary
nual (available in 11 languages)
Ma
O3000 and DPO3000 Series Technical Reference
MS
(PDF only)
(PDF only)
Tektronix 3000 Series Application Module Installation
Instructions Manual
http://us.fluke.com
MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual vii
Preface
viii MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual
Operating Information
For information on installing and operating your MSO3000 or DPO3000 Series
Oscilloscope, refer to the MSO3000 and DPO3000 Series Oscilloscopes User
Manual.
This manual is available, in 11 languages, on the Web at www.tektronix.com.
MSO3000 and DPO3000 S eries Digital Phosphor Oscilloscopes Service Manual 1
Operating Information
2 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual
Theory of Operation
This chapter describes the electrical operation of the oscilloscope to the module
level. The following figure shows the oscilloscope module interconnections.
Block Diagram
Figure 1: Oscilloscope module interconnections
MSO3000 and DPO3000 S eries Digital Phosphor Oscilloscopes Service Manual 3
Theory of Operation
Power Supply
I/O Board
Attenuator Board
The Power Supply board converts AC line voltage to +12 V and +6 V to power all
internal circuits.
The I/O board contains two USB ports (one host port and one device port), an
Ethernet p
ort (LAN), a WVGA Video port, and a Trigger Out BNC connector.
Main Board
Acquisition System
Trigger System
The Atten
Acquisition s ystem begins with the analog signal path, on the Attenuator board,
and ends with a digitized signal in memory, on the Main board.
The signal enters a channel input, and then passes through an attenuator and
preamplifier. The signal is then passed to the Main board.
The Main board module contains the following functions:
The A
board and ends with a digitized signal in memory, on the Main board. The analog
signal from each preamplifier on the Attenuator board 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 on the
Attenuator board, 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.
uator board contains the analog portions of the acquisition system. The
cquisition system begins with the analog signal path, on the Attenuator
isplay System
D
Processor System
4 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual
The Display system combines live waveform data from acquisition memory with
menus and text, and stores this information in display memory. It then uses this
data to refresh the XGA display module (LCD).
The Processor system contains a 440EP Power PC microprocessor that controls
the entire instrument. The processor system also contains FLASH ROM, system
RAM, and interfaces to the USB ports.
Theory of Operation
Power Converter
Digital Channels
Front-Panel Board
The Power Conve
and generates voltages for the analog and digital circuitry on the Main board.
The MSO3000 series main board also includes threshold DACs and comparators
for the digit
The Front Pa
and controls, and then sends this information to the processor system on the Main
board. The Front Panel board also generates the probe compensation output signal
and p rovides an interface to the application modules.
rter receives the +12 V and +6 V from the main power supply
al channels.
nel board contains a microprocessor that reads the front-panel buttons
MSO3000 and DPO3000 S eries Digital Phosphor Oscilloscopes Service Manual 5
Theory of Operation
6 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual
Adjustment Procedures
This chapter contains the factory adjustment procedure for the MSO3000
and DPO3000 Series oscilloscopes. Only qualified personnel should perform
adjustment procedures. Read the Service Safety Summary and the General Safety
Summary before performing any service procedures.
NOTE. The vo
ltage references inside the oscilloscope are very stable over time
and should not require routine adjustment. Before performing any procedure
in this chapter, do the Performance Verification procedures to check whether
the oscilloscope meets specifications. See the MSO3000 and DPO3000 Series
Specifications and Performance Verification Technical Reference.
Successful completion of this adjustment procedure automatically updates the
stored time and date of the latest successful adjustment. Completion of the
Performance Verification procedure does not update this date and time. If no
adjustm
ent is needed, there is also no need to update the time and date of the
adjustment.
Required Equipment
The following equipment, or a suitable equivalent, is required to complete these
procedures.
The following table specifies required equipment for adjusting the oscilloscope.
Description Minimum requirements Example
DC voltage source 50 mV to 70 V, ±0.1% amplitude accuracy Fluke or Wavetek 9500 Oscilloscope
Calibrator with 9530 active heads
Sine Generator 1 kHz 1 GHz Fluke or Wavetek 9500 Oscilloscope
Calibrator with one 9510 Output Module
Edge Generator
50 Ω BNC cable BNC male to BNC male, about 10 in (25 cm.)
Adjustment tool
1 kHz with < 50 ps ch-ch skew
long
Non-conducting shaft with diameter = 0.1 in.
(= 2.5 mm)
Fluke or Wavetek 9500 Oscilloscope
Calibrator with one 9510 Output Module
Tektronix part number 012-0208-00
Tektronix part number 003-1433-00
MSO3000 and DPO3000 S eries Digital Phosphor Oscilloscopes Service Manual 7
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