Tektronix RSA6106B, RSA6114B, RSA6120B Service

xx

RSA6100B Series

ZZZ

Real-Time Signal Analyzers

Service Manual

*P077064800*

077-0648-00

xx

RSA6100B Series

ZZZ

Real-Time Signal Analyzers

Service Manual

www.tektronix.com

077-0648-00

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 5 0 0
Beaverto
USA

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

n, OR 97077

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 this product will be free from defects in materials and workmanship for a period of one (1)
year from the date of shipment. If any such 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. Parts, modules and replacement products used by Tektronix for warranty
work may be n
the property of Tektronix.

ew or reconditioned to like new performance. All replaced parts, modules and products become

In order to o
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, with shipping
charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within
the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping
charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage
result
b) to repair damage resulting from improper use or connection t o incompatible equipment; c) to repair any damage
or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or
integrated with other products when the effect of such modification or integration increases the time or difficulty
of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY
OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

TRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE

TEK
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.

[W2 – 15AUG04]

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

ing from attempts by personnel other than Tektronix representatives to install, repair or service the product;

Table of Contents

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

Service safety summary.......................................................................................... vii

Preface .............................................................................................................. ix

Manual Content ..... ................................ .................................. ........................ ix

Manual Conventions.................................. ................................ ........................ ix

Related User Documents...................................................................................... x

Operating Information

Operating Information ........................................................................................... 1-1

Theory of Operation

Theory of Operation............................... ................................ ............................... 2-1

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

Signal Path and Processing ................................................................................. 2-1

Display Panel............ ................................ .................................. ................... 2-2

Front Panel .................. .................................. ................................ ............... 2-2

Rear Panel ............. ................................ ................................ ....................... 2-2

Power Supply................................................................................................. 2-3

Fans............................................................................................................ 2-3

Adjustment Procedures

Adjustment Procedure............................... ................................ ............................. 3-1

Running Alignments.. ................................ ................................ ....................... 3-1

Maintenance

Maintenance....................................................................................................... 4-1

Preventing ESD .............................................................................................. 4-1

Inspection and Cleaning........................ ................................ ............................. 4-2

Removal and Installation Procedures........................ ................................ ................... 4-5

Preparation..... ................................ ................................ ............................... 4-5

Trim, Cabinet, and Module Removal........................... .................................. ......... 4-7

Removal Procedures......................................................................................... 4-9

Troubleshooting................................................................................................. 4-13

Service Level........................ ................................ ................................ ....... 4-14

Check for Common Problems....................... ................................ ..................... 4-14

Diagnostics ................................................................................................. 4-17

RSA6100B Series Service Manual i

Table of Contents

Replaceable Parts

Replaceable Parts .............................. ................................ .................................. . 5-1

Parts Ordering Information ................................ ................................ ................. 5-1

Using the Replaceable Parts List........................................................................... 5-3

ii RSA6100B Series Service Manual

List of Figures

Figure 2-1: RSA6100B Series block diagram.......................................... ....................... 2-4

Figure 4-1: Primary customer replaceable module locations................................................ 4-8

Figure 4-2: Status indicator locations ........................................................................ 4-16

Figure 4-3:

Figure 4-4: Diagnostics Failure Info tab..................................................................... 4-17

Figure 4-5: Starting Extended Diagnostics ....... ................................ ........................... 4-20

Figure 4-6: Embedded Diagnostics Interface .................. ................................ ............. 4-20

Figure 4-7: Diagnostics test iteration control................................................................ 4-21

Figure 5-1: External parts ............ ................................ .................................. ......... 5-5

Figure 5

Figure 5-3: Detail 1 of display and front panel cabling ....................... ............................... 5-8

Figure 5-4: Detail 2 of display and front panel cabling ....................... ............................... 5-9

Figure 5-5: Detail 3 of display and front panel cabling ....................... ............................. 5-10

Figure 5-6: Modules................................... ................................ ......................... 5-12

Figure 5-7: Detail 1 of PC cabling............. ................................ ............................... 5-13

re 5-8: Detail 2 of PC cabling............. ................................ ............................... 5-14

Figu

Figure 5-9: Detail of RT/IQ Option 05 cabling ............................................................. 5-15

Figure 5-10: Power supply and internal hard drive......................................................... 5-17

Figure 5-11: Detail of power supply and internal hard drive cabling..................................... 5-18

Figure 5-12: Upper and lower deck fans.................................... ................................. 5-20

Figure 5-13: Detail of cabling shown in Figure 5-13....................................................... 5-22

gure 5-14: RF interface board and cables ................................................................. 5-23

Fi

Diagnostics Power On Self Test results view.................................................. 4-17

-2: Display, front panel, DVD, and removeable hard drive ....................... ................. 5-7

RSA6100B Series Service Manual iii

Table of Contents

List of Tables

Table 2-1: Rear panel connectors .................... .................................. ......................... 2-2

Table 4- 1: E

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

Table 4-3: Tools required for module removal ................... ................................ ............. 4-6

Table 4-4: Legend for Accessing Modules table.............................................................. 4-7

Table 4-5: Accessing Modules ................. .................................. ............................... 4-7

Table 4-6: Power conversion board connectors ........ ................................ ..................... 4-11

Table 4- 7

Table 4-8: Power Converter board status indicators........................................................ 4-16

Table 4-9: Digital Interface board status indicators......................................................... 4-16

Table 4-10: Diagnostic error messages....................................................................... 4-22

Table 5-1: External parts................................ .................................. ....................... 5-4

Table 5-2: Display, front panel, DVD, and removeable hard drive ......................................... 5-6

Table

Table 5-4: Power supply and internal hard drive............................................................ 5-16

Table 5-5: Upper and lower deck fans .................. ................................ ..................... 5-19

Table 5-6: RF interface board and cables.................................................................... 5-22

xternal inspection checklist ....................................................................... 4-3

: Failure symptoms and possible causes ............................. ............................. 4-14

5-3: Modules........................ .................................. ................................ ... 5-11

iv RSA6100B Series Service Manual

General safety summary

General safet

To avoid fire 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.

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 r

Use proper power cord. Use only the power cord specified for this product and
certified for the country of use.

Ground the product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.

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

llowing safety precautions to avoid injury and prevent damage to

ential hazards, use this product only as specified.

elated to operating the system.

The inputs are not rated for connection to mains or Category II, III , or IV circuits.

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 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.

Replace batteries properly. Replace batteries only with the specified type and
rating.

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.

RSA6100B Series Service Manual v

General safety summary

Termsinthismanual

Symbols and terms on the

product

Do not operate i

Do not operate in an explosive atmosphere.

Keep product surfaces clean and dry.

Provide prop

on installing the product so it has proper ventilation.

These terms may appear in this manual:

WARNING.

in injury or loss of life.

CAUTION

damage to this product or other property.

These t

erms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read
the ma

n wet/damp conditions.

er ventilation. Refer to the manual's installation instructions for details

Warning statements identify conditions or practices that could result

. Caution statements identify conditions or practices that could result in

rking.

WARNING indicates an injury hazard not immediately accessible as you

the marking.

read

CAUTION indicates a hazard to property including the product.

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

vi RSA6100B Series Service Manual

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 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 p
test leads before removing protective panels, soldering, or replacing components.

To avoi

d personnel should perform service procedures. Read this Service

roduct. Disconnect power, remove battery (if applicable), and disconnec t

d electric shock, do not touch exposed connections.

RSA6100B Series Service Manual vii

Service safety summary

viii RSA6100B Series Service Manual

Preface

This is the service manual for the RSA6100B Series Real-time Signal Analyzers.

Read this preface to learn how this manual is structured, what conventions it uses,
and where you can find other information related to servicing this product.

Manual Cont

ent

Manual Conventions

Module

Plug-in Module

This manual contains only information related to servicing an RSA6100B Series
Real-time Signal Analyzer. For information related to installing and operating the
instrume
document as described in Related User Documents on the following page.

Be sure to
important information needed to perform the service correctly, safely, and
efficiently.

This manual uses certain conventions that you should become familiar with
before attempting service.

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.

The term Plug-in Module refers to the units that plug into the Main Digital
Interface board.

nt or for a list of instrument specifications, refer to the appropriate user

read the introductions to all procedures. These introductions provide

his manual refers to any field-replaceable assembly or mechanical part by its

Replaceable Parts

Safety

RSA6100B Series Service Manual ix

T
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.

Symbols and terms related to safety appear in the General Safety Summary found
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.

Preface

Related User Documents

The following related English user documents are available if you need more
information about operating the instrument. These documents are located on the
RSA6100B Series Real-time Signal Analyzer User Documentation CD -ROM or
can be downloaded from the Tektronix Web site (www.tektronix.com/manuals).

RSA6100B Series Real-time Signal Analyzer Quick Start User Manual. This
document provides the basic information you need to install and operate the
instrumen
the instrument.

t. Included is a listing of the options and accessories available for

RSA6100B
Performance Verification Technical Reference (English). Contains the
following technical information about the instrument:

Electrical and physical specifications, including a list of certifications

and compliances.

A performance verific ation procedure to check instrument performance

against guaranteed specifications.

RSA6100B Series Real-time Signal Analyzer Programmer Manual (English).
Describes the GPIB instrument programming commands and interface.

RSA6100B Series Real-time Signal Analyzer Security and Declassification
Instructions (English). Provides instruction on how customers with data
security concerns can sanitize or remove memory devices from the instrument.

Series Real-time Signal Analyzer Series Specifications and

x RSA6100B Series Service Manual

Operating Information

Operating Information

For information on installing and operating your RSA6100B Series Real-time
Signal Analyzer, refer to the Quick Start User Manual.

RSA6100B Series Service Manual 1–1

Operating Information

1–2 RSA6100B Series Service Manual

Theory of Operation

Theory of Operation

This section provides a basic description of the Real-Time Signal Analyzer
(RTSA) operation. A block diagram of the instrument is shown in this section.
(See Figure 2

General

A processor system controls the RSA6100B instrument. The instrument features
an XGA resolution flat-panel display, a transparent touch-screen, and a front-panel
with direct access to commonly used RTSA features. You can also use the RTSA
with a mouse or other pointing device, and/or a keyboard.

The RTSA uses the Microsoft Windows 7 operating system.

Signal Path and Processing

-1 on page 2-4.)

RF Signal Path

Acquisition System

Processor System

An RF signal enters the RTSA through a direct coaxial connection (N-type for the
RSA6106B and RSA6114B, 3.5 mm for the RSA6120B) to the input connector.

The RF signal path conditions the input signals and passes them to the acquisition
system for sampling and processing. The RF signal path consists of three
frequency conversion stages, band-limiting filters, and signal level adjustment
stages. The purpose of t
portion of the input signal range to a intermediate frequency (IF) where it can be
sampled by a high dynamic range A/D.

Control of the RF signal path is performed by the processor 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 metrics of signal quality
to the user. The acquisition d ata processing is performed by one of several
field-programmable gate arrays (FPGAs) under control of the processor. The
processor performs measurement applications.

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.

he RF signal path is to translate a band-limited replica of a

Trigger Inputs

RSA6100B Series Service Manual 2–1

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.

Theory of Operation

Display Panel

Display system

Touch Panel

Front Panel

The Trigger Out
The trigger out signal comes from the Acquisition Control FPGA via the digital
interface board.

Waveforms, spectral traces, measurement results, and control menus are displayed
on a 10.4 inch, color, active-matrix LCD display with touch panel.

The display system consists of a display adapter board, which sends text and
waveform information to the display panel.

The display adapter board sends information from the touch panel to the processor.
The touch panel appears as a USB HID device in the Window Device Manager
tool.

The processor system reads the front-panel switches and encoder. The processor
alsoturnstheLEDsonandoff.

signal is accessed below the display with a coaxial connection.

The ON/STBY switch passes through th
interface board, and to the processor on the front panel board.

Communication between the processor system and the front panel is performed
over an internal USB connection.

The DVD-RW, removable HDD (hard disk drive), or removable solid-state hard
drive communicate over a SATA connection directly to the processor system.

e display adapter board, the digital

Rear Panel

The following table describes the connectors available on the rear panel.

Table 2-1: Rear panel connectors

Name Input or Output Connector type Description

Reference In

Reference Out Output BNC 10 MHz output or loop-through of user

LAN

USB Input/Output USB Two USB 2.0 connectors

Keyboard Input

Input

Input/Output

BNC External time-base reference. See data sheet

for signal quality requirements.

Reference In signal

RJ-45

PS/2 Keyboard-only PS/2 connector

10/100/1000baseT Ethernet connector

2–2 RSA6100B Series Service Manual

Theory of Operation

Table 2-1: Rear panel connectors (cont.)

Name Input or Output Connector type Description

VGA Output D-Sub

Serial Input/Output D-Sub Serial communications port (COM2) to

Trigger In Input

Headset

+28 V

GPIB Input/Output

IF Output Output BNC 500 MHz Analog IF Output signal (Option 05)

Digital I/Q Output

Output

Output BNC

BNC TTL Gate/trigger input signal

3.5 mm stereo E xternal headphone connection

IEEE-488

2x50

External monitor connector

processor system

Noise source drive power

General P urpose Interface Bus

Two connectors for digital I and Q output
signals. (Option 05)

All connections except the IF Output and Digital I/Q are connected directly to the
digital interface board. The IF Output and Digital I/Q outputs are connected to the

-Time I/Q (RTIQ) option board.

Real

Power Supply

Fans

Power Conversion board provides instrument power. The Power Conversion

The
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.

Seven individual fans provide cooling to the RTSA. Three fans are d edicated to
the RF Deck and are controlled by the RF Interface. Two fans provide cooling
for the digital side of the instrument.

The bulk power supply module has an internal fan. Control signals to the power
supply fan are sent through the Power Conversion board from the Digital Interface
board.

A seventh fan is resident on the processor board heat sink, and is controlled by
theCOMExpressPCboard.

If Option 200 is installed, an additional fan helps cool the instrument.

RSA6100B Series Service Manual 2–3

Theory of Operation

Figure 2-1: RSA6100B Series block diagram

2–4 RSA6100B Series Service Manual

Adjustment Procedures