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.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
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.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
HIn North America, call 1-800-833-9200.
HWorldwide, visit www.tektronix.com to find contacts in your area.
Warranty 2
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. Batteries are excluded from this warranty. Parts, modules and replacement products used by Tektronix
for warranty work may be new or reconditioned to like new performance. All replaced parts, modules and products become
the property of Tektronix.
In order to obt ain service under this warranty, Custom er must notify Tektronix of the defect before the expiration 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 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 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
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
TEKTRONIX
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
ٛF RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
Table of Contents
Specifications
General Safety Summaryvii...................................
Service Safety Summaryix....................................
Table 5-3: Summary of procedures5-8..........................
Table 5-4: Tools required for module removal5-9..................
RTX100A ISDB-T RF Signal Generator Service Manual
v
Table of Contents
vi
RTX100A ISDB-T RF Signal Generator Service Manual
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.
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.
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 m aking connections to the product.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
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.
No Power Switch. Power supply cord is considered the disconnecting device,
disconnect the main power by means of the power cord.
RTX100A ISDB-T RF Signal Generator Service Manual
vii
General Safety Summary
Symbols and Terms
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.
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 the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
CAUTION
Refer to Manual
WARNING
High Voltage
Double
Insulated
Protective Ground
(Earth) Terminal
Not suitable for
connection to
the public telecom-
munications network
viii
RTX100A ISDB-T RF Signal Generator 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.
Disconnect Power. To avoid electric shock, disconnect the mains power by means
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.
RTX100A ISDB-T RF Signal Generator Service Manual
ix
Service Safety Summary
x
RTX100A ISDB-T RF Signal Generator Service Manual
Environmental Considerations
This section provides i nformation about the environmental impact of the
product.
Product End-of-Life
Handling
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 Nortification. 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.
Restriction of Hazardous
Substances
RTX100A ISDB-T RF Signal Generator Service Manual
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.
xi
Environmental Considerations
xii
RTX100A ISDB-T RF Signal Generator Service Manual
Preface
Manual Structure
This is the service manual for the RTX100A ISDB-T RF Signal Generator. This
manual contains information needed to service an RTX100A to the module level.
This manual is divided into sections, such as Specifications and Theory of
Operation. Furthermore, some sections are divided into subsections, such as
Product Description and Removal and Installation Procedures.
Sections containing procedures also contain introductions to those procedures.
Be sure to read these introductions because they provide information needed to
do the service correctly and efficiently. The following are brief descriptions of
each manual section.
HSpecifications contains a description of the RTX100A and the characteristics
that apply to it.
HTheory of Operation contains circuit descriptions that support service to the
module level.
HPerformance Verification contains procedures for confirming that an
RTX100A functions properly and meets warranted characteristics.
HAdjustment Procedures contains procedures for adjusting the RTX100A to
meet warranted characteristics.
HMaintenance contains information and procedures for performing preventive
and corrective maintenance of an RTX100A. These instructions include
cleaning, module removal and installation, and fault isolation to the module
level.
HOptions contains descriptions of factory-installed options and field-upgrad-
able options.
HDiagrams contains block diagram and interconnection diagram.
HReplaceable Parts List includes a table of all replaceable modules, their
descriptions, and their Tektronix part numbers.
RTX100A ISDB-T RF Signal Generator Service Manual
xiii
Preface
Manual Conventions
This manual uses certain conventions with which you should become familiar.
Some sections of the manual contain procedures for you to perform. To keep
those instructions clear and consistent, this manual uses the following
conventions:
HNames of front panel controls and menus appear in the same case (initial
capitals, all uppercase, and so forth) in the manual as is used on the
RTX100A front panel and menus.
HInstruction steps are numbered unless there is only one step.
HBold text refers to specific interface elements that you are instructed to
select, click, or clear .
Example: To power on the RTX100A, press the ON/STBY switch.
HItalic text refers to document names or sections. Italics are also used in
NOTES, CAUTIONS, and WARNINGS.
Modules
Safety
Throughout this manual, any replaceable component, assembly, or part of the
RTX100A 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 RTX100A is a module.
Symbols and terms related to safety appear in the General Safety Summary and
Service Safety Summary near the beginning of this manual.
Finding Other Information
Other documentation for the RTX100A includes:
HThe RTX100A ISDB-T RF Signal Generator User Manual (Tektronix part
Example: The Diagrams section, beginning on page 7-1, includes a block
diagram and an interconnect diagram.
number 071-1755-XX) contains a tutorial to quickly describe how to operate
the RTX100A. It also includes an in-depth discussion on how to use the
RTX100A features.
xiv
RTX100A ISDB-T RF Signal Generator Service Manual
Introduction
This manual contains information needed to properly s ervice the RTX100A
ISDB-T RF Signal Generator, as well as general information critical to safe and
effective servicing.
To prevent personal injury or damage to the RTX100A, consider the following
before attempting service:
HThe procedures in this manual should be performed only by a qualified
service person.
HRead the General Safety Summary and the Service Safety Summary,
beginning on page vii.
When using this manual for servicing, be sure to follow all warnings, cautions,
and notes.
Performance Check Interval
Generally, the performance check described in Section 3, Performance Verification, should be done every 12 months. In addition, a performance check is
recommended after module replacement.
Strategy for Servicing
If the RTX100A does not meet performance criteria, repair is necessary.
This manual contains all the information needed for periodic maintenance of the
RTX100A.
This manual also contains all information for corrective maintenance down to the
module level. To isolate a failure to a module, use the fault isolation procedures
found in Troubleshooting, part of Section 5, Maintenance. To remove and
replace any failed module, follow the instructions in Removal and InstallationProcedures, also part of Section 5. After isolating a faulty module, replace it
with a fully-tested module obtained from the factory. Section 8, ReplaceableParts List, contains part number and ordering information for all replaceable
modules.
RTX100A ISDB-T RF Signal Generator Service Manual
xv
Introduction
Tektronix Service Offerings
Tektronix provides service to cover repair under warranty as well as other
services that may provide a cost-effective answer to your service needs.
Whether providing warranty repair service or any of the other services listed
below, Tektronix service technicians are well trained to service the RTX100A.
They have access to the latest information on improvements to the RTX100A as
well as the latest new options.
Warranty Repair Service
Self Service
Tektronix warrants this product for one year from date of purchase. The warranty
appears after the title page in this manual. Tektronix technicians provide
warranty service at most Tektronix service locations. The Tektronix product
catalog lists all worldwide service locations or you can visit our website for
service information: www.tektronix.com.
Tektronix supports repair to the module level by providing Module Exchange.
Module Exchange. This service reduces down-time for repair by allowing you to
exchange most modules for remanufactured ones. Each module comes with a
90-day service warranty.
For More Information. Contact your local Tektronix service center or sales
engineer for more information on any of these repair or adjustment services.
xvi
RTX100A ISDB-T RF Signal Generator Service Manual
Specifications
Product Overview
The RTX100A ISDB--T RF Signal Generator converts a broadcast transport
stream into an RF signal and outputs it. In addition to the RF signal output
feature, the RTX100A records and plays MPEG--2 transport streams that are
compliant with ATSC, DVB, and ARIB standards.
The RTX100A provides the following features:
HRF modulated output of broadcast transport streams
HDirect RF output of ASI input signals
HData rate: 200 Mbps maximum (RAM mode); 256 Kbps minimum
HHierarchy display of stored or captured transport streams
H188, 204, 208 bytes packet size, S --TMCC, M--TMCC, non transport stream,
HReal--time updating of stream parameters; continuity_counter, PCR/PTS/
UHF: 13 channel to 62 channel (473 MHz to 767 MHz)
and partial transport stream output formats
DTS, TOT/TDT/STT, NPT, and Reed Solomon (ISDB--T only)
HContinuous recording of captured streams
HPCR jitter insertion
HTriggered stream capture
HFull remote control using Ethernet interface
HScheduler application for automated stream playout and record (Option SC
only)
HDVD ± RW drive
The RTX100 includes the ReMux application software that provides the
capability to create a t ransport stream of super frame structure defined in the
ISDB-S systems from an MPEG2 transport stream.
RTX100A ISDB-T RF Signal Generator Service Manual
1-1
Product Overview
1-2
RTX100A ISDB-T RF Signal Generator Service Manual
Specifications
Tables 1-1 through 1-4 list the functional, electrical, mechanical, and environmental characteristics of the RTX100A. Table 1-5 lists the national and
international standards t o which the RTX100A complies.
All listed specifications are guaranteed unless labeled with “typical”. Typical
specifications are provided for your convenience but are not guaranteed.
Performance Conditions
The electrical characteristics listed on t he following pages are valid under the
following conditions:
HThe RTX100A must be in an environment where the temperature, altitude,
HThe RTX100A must have a warm-up period of at least 20 minutes.
HThe RTX100A must be operating at an ambient temperature between
humidity, and vibration conditions are within the operating limits described
in Table 1-4 on page 1-11.
+5 _Cto+40_C, unless otherwise noted.
Functional Specifications
Table 1-1: Functional specifications
CharacteristicsDescription
System configuration
System OSWindows XP Professional
CPU1.3 GHz
System memory512 MB
Display640 x 480 VGA resolution with 256 K colors
Storage device
Hard disk drive160 GB
DVD ± RW driveRead and write: DVD+R, DVD+RW, DVD--R, DVD--RW, CD--R, and CD--RW
Read only: DVD--ROM and CD--ROM
Expansion slot1-PCIslot
RTX100A ISDB-T RF Signal Generator Service Manual
1-3
Specifications
Electrical Specifications
Table 1-2: Mainframe
CharacteristicsDescription
Maximum output rate
Hard disk≥120 Mbps
RAM≥200 Mbps
Maximum record rate
Hard disk≥120 Mbps (File size: < 4 GB, just after disk format operation)
≥90 Mbps (File size: 33 GB, just after disk format operation)
Clock pulse width, typicalT/2 ± T/10, T=1/f (f=byte clock frequency) (see Figure 1-1 on page 1-10)
Data hold time, typicalT/2 ± T/10, T=1/f (f=byte clock frequency, data are latched on DCLK rising edge)
(see Figure 1-1 on page 1-10)
ASI interface
Standard conformanceEN 50083-9 Annex B
Connector typeBNC
Impedance75 Ω
Data rate256 Kbps to 214 Mbps
Output
Number of outputs1
Output voltage800 mV ± 10%
Jitter≤ 0.2 UI p--p
Rise/fall time≤ 1.2 ns (20% to 80%)
Return loss< --17 dB (5 MHz to 270 MHz) into 75 Ω load
Input
Number of inputs1
Input voltage, typical200 mV to 800 mV
Return loss< --17 dB ( 5 MHz to 270 MHz) into 75 Ω load
Internal RF reference clock
Frequency27 MHz ± 1 ppm when manufactured.
Stability± 0.5 ppm per year
± 1 ppm over temperature range
External RF reference input
Connector typeBNC
Input impedance, typical50 Ω
Reference input
Frequency10 MHz, 27 MHz
8.126948 MHz
Input level, typical160 kHz to 26.75 MHz (parallel clock)
1.28 MHz to 32 MHz (serial clock)
1-6
RTX100A ISDB-T RF Signal Generator Service Manual
Table 1-2: Mainframe (Cont.)
CharacteristicsDescription
RF output
Connector typeBNC
Output impedance, typical75 Ω
Digital modulation
StandardARIB B31 V1.1
Mode1/2/3
Bandwidth6MHz
Number of segments13
Number of layersMaximum 3
Carrier modulationQPSK, 16 QAM, 64 QAM
NOTE: DPQSK is not supported. If DPQSK modulation is used in a broadcast transport stream,
the stream is modulated into QPSK. However, the signal output from the ASI connector is not
modulated into QPSK.