Tektronix RSA5103 User manual

RSA5100B Series
Real-Time Signal Analyzer
ZZZ
Service Manual
xx
Revision A
www.tek.com
*P077090300*
077-0903-00

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.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
In North America, call 1-800-833-9200.
Worldwide, visit www.tek.com to find contacts in your area.

Table of Contents
Important safety information..................................................................................... iv
General safety summary ..................................................................................... iv
Service safety summary...................................................................................... vi
Terms in this manual ........................................................................................ vii
Symbols and terms on the product......................................................................... vii
Preface.............................................................................................................. ix
Manual content................................................................................................ ix
Manual conventions .......................................................................................... ix
Related documentation........................................................................................ x
Theory of operation
Theory of operation .............................................................................................. 1-1
General........................................................................................................ 1-2
Signal path and processing.................................................................................. 1-2
Display panel................................................................................................. 1-3
Front panel.................................................................................................... 1-3
Rear panel .................................................................................................... 1-3
Power supply................................................................................................. 1-4
Fans............................................................................................................ 1-4
Adjustment procedures
Adjustment procedure............................................................................................ 2-1
Running alignments ......................................................................................... 2-1
Maintenance
Maintenance....................................................................................................... 3-1
Preventing ESD.............................................................................................. 3-1
Inspection and cleaning ..................................................................................... 3-1
Restoring the instrument software.............................................................................. 3-5
Restore the operating system............................................................................... 3-5
Get the latest software....................................................................................... 3-6
Removal and installation procedures........................................................................... 3-7
Preparation.................................................................................................... 3-7
Trim, cabinet, and module removal........................................................................ 3-9
Removal procedures....................................................................................... 3-12
Troubleshooting................................................................................................. 3-16
Service level................................................................................................ 3-17
RSA5100B Series Service Manual i

Table of Contents
Check for common problems............................................................................. 3-17
Diagnostics ................................................................................................. 3-20
Replaceable parts
Replaceable parts................................................................................................. 4-1
Parts ordering information.................................................................................. 4-1
Using the Replaceable parts list............................................................................ 4-3
ii RSA5100B Series Service Manual

List of Figures
Figure 1-1: Block diagram ...................................................................................... 1-1
Figure 3-1: Power supply and HDD drive locations........................................................ 3-10
Figure 3-2: Main customer replaceable modules ........................................................... 3-11
Figure 3-3: Status indicator locations........................................................................ 3-19
Figure 4-1: External parts ....................................................................................... 4-5
Figure 4-2: Display and front panel ............................................................................ 4-7
Figure 4-3: Modules.............................................................................................. 4-9
Figure 4-4: Power supply and hard drives................................................................... 4-11
Figure 4-5: Upper deck fans, misc. cables .................................................................. 4-13
List of Tables
Table 1-1: Rear panel connectors............................................................................... 1-3
Table 3-1: External inspection checklist....................................................................... 3-2
Table 3-2: Internal inspection check list....................................................................... 3-4
Table 3-3: Tools required for module removal................................................................ 3-8
Table 3-4: Legend for accessing modules table............................................................... 3-9
Table 3-5: Accessing modules .................................................................................. 3-9
Table 3-6: Failure symptoms and possible causes .......................................................... 3-17
Table 3-7: Power converter board LED status indicators.................................................. 3-19
Table 3-8: Digital interface board LED status indicators .................................................. 3-19
Table 3-9: Hardware module diagnostic error messages................................................... 3-26
Table 3-10: Digital interface Board diagnostic error messages ........................................... 3-26
Table 3-11: ADC board diagnostic error messages......................................................... 3-27
Table 3-12: DPSA board diagnostic error messages........................................................ 3-28
Table 3-13: RF Interface board diagnostic error messages ................................................ 3-29
Table 3-14: LO1 module diagnostic error messages........................................................ 3-30
Table 3-15: LO2/Reference oscillator diagnostic error messages......................................... 3-31
Table 3-16: Front panel diagnostic error messages......................................................... 3-34
Table 4-1: External parts......................................................................................... 4-4
Table 4-2: Display and front panel ............................................................................. 4-6
Table 4-3: Modules............................................................................................... 4-8
Table 4-4: Power supply and hard drives .................................................................... 4-10
Table 4-5: Upper deck fans, misc. cables.................................................................... 4-12
RSA5100B Series Service Manual iii

Important safety information
Important safety information
This manual contains information and warnings that must be followed by the user
for safe operation and to keep the product in a safe condition.
To safely perform service on this product, additional information is provided at
the end of this section. (See page vi, Servicesafetysummary.)
General safety summary
Use the product only as specified. Review the following safety precautions to
avoid injury and prevent damage to this product or any products connected to it.
Carefully read all instructions. Retain these instructions for future reference.
Comply with local and national safety codes.
For correct and safe operation of the product, it is essential that you follow
generally accepted safety procedures in addition to the safety precautions specified
in this manual.
The product is designed to be used by trained personnel only.
Only qualified personnel who are aware of the hazards involved should remove
the cover for repair, maintenance, or adjustment.
Before use, always check the product with a known source to be sure it is
operating correctly.
This product is not intended for detection of hazardous voltages.
Use personal protective equipment to prevent shock and arc blast injury where
hazardous live conductors are exposed.
While using this product, you may need to access other parts of a larger system.
Read the safety sections of the other component manuals for warnings and
cautions related to operating the system.
When incorporating this equipment into a system, the safety of that system is the
responsibility of the assembler of the system.
To avoid fire or personal
injury
Use proper power cord. Use only the power cord specified for this product and
certified for the country of use.
Do not use the provided power cord for other products.
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, make sure that the product is properly grounded.
iv RSA5100B Series Service Manual

Important safety information
Do not disable the power cord grounding connection.
Power disconnect. The power cord disconnects the product from the power
source. See instructions for the location. Do not position the equipment so that
it is difficult to operate the power cord; it must remain accessible to the user at
all times to allow for quick disconnection if needed.
Connect and disconnect properly. Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
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.
Do not float the common terminal above the rated voltage for that terminal.
The measuring terminals on this product are not rated for connection to mains or
Category II, III, or IV circuits.
Do not operate without covers. Do not operate this product with covers or panels
removed, or with the case open. Hazardous voltage exposure is possible.
Avoid exposed circuitry. Do not touch exposed connections and components
when power is present.
Do not operate with suspected failures. If you suspect that there is damage to this
product, have it inspected by qualified service personnel.
Disable the product if it is damaged. Do not use the product if it is damaged
or operates incorrectly. If in doubt about safety of the product, turn it off and
disconnect the power cord. Clearly mark the product to prevent its further
operation.
Before use, inspect voltage probes, test leads, and accessories for mechanical
damage and replace when damaged. Do not use probes or test leads if they are
damaged, if there is exposed metal, or if a wear indicator shows.
Examine the exterior of the product before you use it. Look for cracks or missing
pieces.
Use only specified replacement parts.
Use proper fuse. Use only the fuse type and rating specified for this product.
Wear eye protection. Wear eye protection if exposure to high-intensity rays or
laser radiation exists.
Do not operate in wet/damp conditions. Be aware that condensation may occur if
a unit is moved from a cold to a warm environment.
RSA5100B Series Service Manual v

Important safety information
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry. Remove the input signals before you clean
the product.
Provide proper ventilation. Refer to the installation instructions in the manual for
details on installing the product so it has proper ventilation.
Slots and openings are provided for ventilation and should never be covered or
otherwise obstructed. Do not push objects into any of the openings.
Provide a safe working environment. Always place the product in a location
convenient for viewing the display and indicators.
Avoid improper or prolonged use of keyboards, pointers, and button pads.
Improper or prolonged keyboard or pointer use may result in serious injury.
Be sure your work area meets applicable ergonomic standards. Consult with an
ergonomics professional to avoid stress injuries.
Use care when lifting and carrying the product. This product is provided with
handles for lifting and carrying.
Use only the Tektronix rackmount hardware specified for this product.
Servicesafetysummary
The Service safety summary section contains additional information required to
safely perform service on the product. Only qualified personnel should perform
service procedures. Read this Service safety summary and the General safety
summary before performing any service procedures.
To avoid electric shock. Do not touch exposed connections.
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 product power and
disconnect the power cord from the mains power before removing any covers or
panels, or opening the case for servicing.
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.
Verify safety after repair. Always recheck ground continuity and mains dielectric
strength after performing a repair.
vi RSA5100B Series Service Manual

Important safety information
Terms in this 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.
Symbols and terms on the product
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read
the marking.
WARNING indicates an injury hazard not immediately accessible as you
read themarking.
CAUTION indicates a hazard to property including the product.
When this symbol is marked on the product, be sure to consult the manual
to find out the nature of the potential hazards and any actions which have to
be taken to avoid them. (This symbol may also be used to refer the user to
ratings in the manual.)
The following symbol(s) may appear on the product:
RSA5100B Series Service Manual vii

Important safety information
viii RSA5100B Series Service Manual

Preface
This is the service manual for the RSA5100B Series Real-Time Signal Analyzers.
Manual content
This manual contains information related to servicing an RSA5100B Series
Real-Time Signal Analyzer. For information related to installing and operating
the instrument, or for a list of instrument specifications, refer to the appropriate
user document. (See page x, Related documentation.)
Be sure to read the introductions to all procedures. These introductions provide
important information needed to perform the service correctly, safely, and
efficiently.
Manual conventions
This manual uses certain conventions that you should become familiar with
before attempting service.
Module The term module refers to a collection of items that are replaceable as a unit. A
module may contain electrical and mechanical assemblies, circuit boards, and
interconnecting cables.
Plug-in module The term Plug-in module refers to the units that plug into the Main digital
interface board.
Replaceable parts This manual refers to any field-replaceable assembly or mechanical part by its
name or generically as a replaceable part. In general, a replaceable part is any
circuit board or assembly that is listed in the Replaceable Parts section.
Safety SymbolsandtermsrelatedtosafetyappearintheGeneralSafetySummaryfound
at the beginning of this manual. Be sure to read both the General Safety Summary
and Service Safety Summary before performing any service to this instrument.
RSA5100B Series Service Manual ix

Preface
Related documentation
The following related English user documents are available if you need more
information about operating the instrument. These documents can be downloaded
from the Tektronix Web site (www.tektronix.com/manuals).
RSA5100B Series Real-Time Signal Analyzer Quick Start User Manual.This
document provides the basic information you need to install and operate the
instrument. The document includes a listing of the available instrument
options and accessories.
RSA5100B Series Real-Time Signal Analyzer Series Specifications and
Performance Verification Technical Reference (English). This document
contains the following technical information about the instrument:
Electrical and physical specifications, including a list of certifications
and compliances.
A performance verification procedure to check instrument performance
against guaranteed specifications.
RSA5100B Series Real-Time Signal Analyzer Programmer Manual (English).
Describes the GPIB instrument programming commands and interface.
RSA5100B Series Real-Time Signal Analyzer Declassification and Security
Instructions (English). Provides instruction on how customers with data
security concerns can sanitize or remove memory devices from the instrument.
x RSA5100B Series Service Manual

Theory of operation

Theory of operation
This section provides a basic description of the Real-Time Signal Analyzer (RSA)
operation. Refer to the following block diagram of the instrument while reading
through this section.
Figure 1-1: Block diagram
RSA5100B Series Service Manual 1–1

Theory of operation
General
A processor system controls the instrument. The instrument features an XGA
resolution flat-panel display, a transparent touch-screen, and a front-panel with
direct access to common features. You can also use the instrument with a mouse
or other pointing device, and/or a keyboard.
The instrument uses the Microsoft Windows 7 operating system.
Signal path and processing
RF signal path An RF signal enters the instrument through a direct N-type coaxial connection.
The RF signal path consists of an attenuator, optional preamplifier, 1st converter,
and 2nd converter. The purpose of the RF signal path is to translate a band-limited
replica of a portion of the input signal range to an intermediate frequency (IF)
which can be sampled by a high-dynamic-range A/D converter.
The processor system controls the RF signal path.
Acquisition system The acquisition system samples the IF signal and converts it to digital signals.
These digital signals are then filtered numerically and processed either for
direct display or by measurement applications to provide signal quality metrics
to the user. The acquisition data processing is performed by one of several
field-programmable gate arrays (FPGAs) under control of the processor. The
processor performs measurement applications.
Processor system The processor system consists of a COM Express PCI-based processor board and
a Digital interface board that connects the processor to the acquisition board.
Trigger inputs There are two coaxial trigger inputs. One is on the front panel below the display
and the other is on the rear panel. Both trigger inputs connect directly to the
Digital interface board. Trigger signals are processed by an FPGA on the Digital
interface board. The information from the trigger system is combined with
acquisition data by the processor system.
The Trigger Out signal is a coaxial connection on the front panel below the
display. The trigger out signal comes from the Acquisition Control FPGA,
through the Digital interface board.
1–2 RSA5100B Series Service Manual

Theory of operation
Display panel
Waveforms, spectral traces, measurement results, and control menus are displayed
on a 10.4 inch, color, active-matrix LCD display with touch panel.
Display system The display system consists of a display adapter board. The display adapter board
sends text and waveform information to the display panel.
Touch panel The display adapter board sends information from the touch panel to the processor.
The touch panel is listed as a USB HID device in the Window Device Manager
tool.
Front panel
The processor system detects changes in the front-panel switches and encoder. The
processor also turns the LEDs on and off. Communication between the processor
system and the front panel is performed over an internal USB connection.
The ON/STBY switch passes through the display adapter board, the PC carrier
board, the digital interface board, and to the PC board.
The removable HDD (hard disk drive) communicates over a SATA connection
directly to the processor system.
Rear panel
The following table describes the rear panel connectors.
Table 1-1: Rear panel connectors
Name
Input or
Output
Connector
type Description
Reference In Input BNC External time-base reference. See data
sheet for signal quality requirements.
Reference
Out
Output BNC 10 MHz output or loop-through of user
Reference In signal
LAN Input/Output RJ-45 10/100/1000baseT Ethernet connector
USB Input/Output USB Two USB 2.0 connectors
Keyboard Input PS/2 Keyboard-only PS/2 connector
VGA Output D-Sub External monitor connector
Serial Input/Output D-Sub Serial communications port (COM1) to
processor system
Trigger In Input BNC TTL Gate/trigger input signal
RSA5100B Series Service Manual 1–3

Theory of operation
Table 1-1: Rear panel connectors (cont.)
Name
Input or
Output
Connector
type Description
Line In (blue) Input 3.5 mm
mono
Audio line input (disabled)
MIC In (pink) Input 3.5 mm
mono
Audio input signal (microphone)
Headphone Output 3.5 mm
stereo
External headphone connection
+28 VDC Output BNC Noise source drive power
GPIB Input/Output IEEE-488 General Purpose Interface Bus
Zero-span Output BNC Zero-span output connector
Power supply
The Power conversion board provides instrument power. The Power conversion
board consists of several switching supplies that translate and balance the power
taken from the power supply module.
Power is distributed from the Power conversion board to both the RF Deck and
the Digital interface board.
The ON/STBY switch, located on the front panel, controls all of the power to the
instrument except for the part of the circuitry in the standby power supply.
Fans
Several fans provide cooling to the instrument:
Three fans are located in the RF Deck and are controlled by the RF Interface.
Two fans provide cooling for the Digital Deck of the instrument.
The power supply module has an internal fan.
The COM Express PC board has a fan that is controlled by the COM Express
PC board.
The optional DPSA board contains a fan.
1–4 RSA5100B Series Service Manual

Adjustment procedures