Tektronix RTX130B Service
Service Manual
RTX130B
QAM & VSB RF Signal Generator
071-1935-03
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 © 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 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:
H In North America, call 1-800-833-9200.
H Worldwide, 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 obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangem ents 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 c onnection 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 MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE 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
Table of Contents
Specifications
General Safety Summary vii...................................
Service Safety Summary ix....................................
Environmental Considerations xi...............................
Preface xiii...................................................
Manual Structure xiii................................................
Manual Conventions xiv..............................................
Finding Other Information xiv.........................................
Introduction xv..............................................
Performance Check Interval xv........................................
Strategy for Servicing xv.............................................
Tektronix Service Offerings xvi........................................
Product Overview 1-1.........................................
Specifications 1-3.............................................
Software Protection 1-3..............................................
Performance Conditions 1-3...........................................
Functional Specifications 1-4..........................................
Electrical Specifications 1-4...........................................
Mechanical (Physical) Characteristics 1-13................................
Environmental Characteristics 1-13......................................
Certifications and Compliances 1-14.....................................
Theory of Operation
A12 Main Board 2-1.................................................
A20 PCI Backplane Board 2-3.........................................
A180 QAM Modulator Board 2-4......................................
Front-Panel Processor Board 2-6.......................................
Keypad Board 2-7...................................................
A40 AC Distributor Board 2-7.........................................
Performance Verification
Connecting to a Network 3-1..........................................
Equipment Required 3-6..............................................
RTX130B Test Record 3-7............................................
Procedures 3-8......................................................
RTX130B QAM & VSB RF Signal Generator Service Manual
i
Table of Contents
Maintenance
Related Maintenance Procedures 4-1....................................
Preparation 4-2.....................................................
Inspection and Cleaning 4-3...........................................
Removal and Installation Procedures 4-7.........................
Preparation 4-7.....................................................
Access Procedure 4-14................................................
Procedures for External Modules 4-15...................................
Procedures for Board Modules 4-21......................................
Procedures for Internal Modules 4-26....................................
Verifying the BIOS Configuration 4-33...........................
Procedure 4-33......................................................
Troubleshooting 4-35...........................................
Troubleshooting Trees 4-35............................................
System Software Recovery 4-45..................................
Recovery Procedure 4-45..............................................
Using the Rescue Disk 4-47......................................
Recovery Procedure 4-47..............................................
Options
Diagrams
Replaceable Parts List
Parts Ordering Information 7-1.........................................
Using the Replaceable Parts List 7-3....................................
ii
RTX130B QAM & VSB RF Signal Generator Service Manual
List of Figures
Table of Contents
Figure 1-1: Timing diagram of the SPI interface 1-12................
Figure 3-1: Pin connections for a crossover Ethernet cable 3-1.......
Figure 3-2: Network Connections window 3-2.....................
Figure 3-3: Local Area Connection Status dialog box 3-3............
Figure 3-4: Local Area Connection Properties dialog b ox 3-3........
Figure 3-5: Internet Protocol (TCP/IP) Properties dialog box 3-4.....
Figure 3-6: Equipment connection for checking the internal clock
output level 3-9............................................
Figure 3-7: Equipment connection for checking the internal clock
frequency 3-10.............................................
Figure 3-8: Equipment connection for checking the play
operation--SPI interface 3-11.................................
Figure 3-9: Equipment connections for checking the external
clock/reference and trigger inputs 3-15.........................
Figure 3-10: Equipment connection for checking the output
signal--ASI interface 3-18....................................
Figure 3-11: Equipment connections for checking the ASI play
operation 3-20.............................................
Figure 3-12: Equipment connection for checking the ASI record
operation 3-21.............................................
Figure 3-13: Equipment connection for checking the recorded
file--ASI interface 3-23.......................................
Figure 3-14: Eq uipment connection for verifying the 8VSB play
operation 3-24.............................................
Figure 3-15: Eq uipment connection for verifying the 8VSB record
operation 3-26.............................................
Figure 3-16: Equipment connection for verifying the recorded
file--SMPTE310M interface 3-27..............................
Figure 3-17: Equipment connection for checking the output for
errors 3-30................................................
Figure3-18:TestsGroupedbyPriority123screen(AnnexA) 3-32....
Figure 3-19: Equipment connection for checking the IEEE1394b
interface 3-34..............................................
Figure 3-20: Equipment setup for Option GbE performance
verification 3-40............................................
Figure 3-21: IP Playout Configuration dialog box 3-42...............
Figure 3-22: RTX130B MPEG Player display with 40.000000 Mbps 3-43
RTX130B QAM & VSB RF Signal Generator Service Manual
iii
Table of Contents
Figure 3-23: Open Transport Stream dialog box 3-44................
Figure 3-24: Selecting the IP interface 3-45.........................
Figure 3-25: Interface settings 3-46...............................
Figure 3-26: IP Flow selection 3-47...............................
Figure 3-27: MTS400 Series TS Compliance Analyzer display 3-48....
Figure 3-28: Clock dialog box 3-49................................
Figure 3-29: RTX130B MPEG Player display with maximum
bit rate 3-50...............................................
Figure 3-30: MTS400 Series TS Compliance Analyzer display for
maximum bit rate 3-51......................................
Figure 4-1: RTX130B orientation 4-10.............................
Figure 4-2: External modules 4-11................................
Figure 4-3: Board modules 4-12..................................
Figure 4-4: Internal modules 4-13................................
Figure 4-5: Guid e to removal procedures 4-14......................
Figure 4-6: Cabinet removal 4-16.................................
Figure 4-7: Right-side and left-side cover removal 4-17...............
Figure 4-8: Front-panel unit removal 4-18.........................
Figure 4-9: Disassembly of front-panel assembly 4-20................
Figure 4-10: A180 QAM Modulator board, A12 Main board,
CPU board, and A20 PCI Backplane board removal 4-22.........
Figure 4-11: H ard disk drive removal 4-27.........................
Figure 4-12: Internal and external fan removal 4-29.................
Figure 4-13: 12 V main power supply and A40 AC
Distributor board removal 4-31...............................
Figure 4-14: RFI filter removal 4-32..............................
Figure 4-15: Troubleshooting procedure (1) 4-36....................
Figure 4-16: Troubleshooting procedure (2) 4-37....................
Figure 4-17: Troubleshooting procedure (3) 4-38....................
Figure 4-18: Troubleshooting procedure (4) 4-39....................
Figure 4-19: Troubleshooting procedure (5) 4-40....................
Figure 4-20: Troubleshooting procedure (6) 4-41....................
Figure 4-21: Troubleshooting procedure (7) 4-42....................
Figure 4-22: Troubleshooting procedure (8) 4-43....................
Figure 4-23: A20 PCI Backplane board view--back side 4-43..........
Figure 4-24: A20 PCI Backplane board view--right side 4-44..........
Figure 6-1: RTX130B block d iagram 6--3..........................
Figure 6-2: RTX130B interconnect diagram 6--5....................
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RTX130B QAM & VSB RF Signal Generator Service Manual
Table of Contents
Figure 7-1: Cabinet and covers 7-5..............................
Figure 7-2: Internal modul es (1) 7-7.............................
Figure 7-3: Internal modul es (2) 7-9.............................
Figure 7-4: Front-panel unit 7-11.................................
Figure 7-5: Cables 7-13.........................................
RTX130B QAM & VSB RF Signal Generator Service Manual
v
Table of Contents
List of Tables
Table 1-1: Functional specifications 1-4..........................
Table 1-2: Mainframe 1-4......................................
Table 1-3: Mechanical characteristics 1-13.........................
Table 1-4: Environmental characteristics 1-13......................
Table 1-5: Certifications and compliances 1-14.....................
Table 3-1: Equipment required for performance verification 3-6.....
Table 3-2: RTX130B test record 3-7.............................
Table 4-1: External inspection check list 4-4......................
Table 4-2: Internal inspection check list 4-5.......................
Table 4-3: Summary of procedures 4-8..........................
Table 4-4: Tools required for module removal 4-9..................
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RTX130B QAM & VSB 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 m ust 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.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
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.
RTX130B QAM & VSB 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
Protective Ground
(Earth) Terminal
viii
RTX130B QAM & VSB 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 m ains 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.
RTX130B QAM & VSB RF Signal Generator Service Manual
ix
Service Safety Summary
x
RTX130B QAM & VSB RF Signal Generator Service Manual
Environmental Considerations
This section provides information 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.
This symbol 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.
Perchlorate Materials. This product contains one or more type CR lithium
coin cell batteries. According to the state of California, CR lithium coin
cells are classified as perchlorate materials and require special handling. See
www.dtsc.ca.gov/hazardouswaste/perchlorate for additional information.
Restriction of Hazardous
Substances
RTX130B QAM & VSB 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 C onsiderations
xii
RTX130B QAM & VSB RF Signal Generator Service Manual
Preface
Manual Structure
This is the service manual for the RTX130B QAM & VSB RF Signal Generator.
This manual contains information needed to service an RTX130B 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.
H Specifications contains a description of the RTX130B and the characteristics
that apply to it.
H Theory of Operation contains circuit descriptions that support service to the
module level.
H Performance Verification contains procedures for confirming that an
RTX130B functions properly and meets warranted characteristics.
H Maintenance contains information and procedures for performing preventive
and corrective maintenance of an RTX130B. These instructions include
cleaning, module removal and installation, and fault isolation to the module
level.
H Options contains descriptions of factory-installed options and field-upgrad-
able options.
H Diagrams contains the block diagram and interconnection diagram.
H Replaceable Parts List includes a table of all replaceable modules, their
descriptions, and their Tektronix part numbers.
RTX130B QAM & VSB 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:
H Names of front panel controls and menus appear in the same case (initial
capitals, all uppercase, and so forth) i n the manual as is used on the
RTX130B front panel and menus.
H Instruction steps are numbered unless there is only one step.
H Bold text refers to specific interface elements that you are instructed to
select, click, or clear.
Example: Press the Menu button to open the File menu.
H Italic 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
RTX130B 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 RTX130B 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 RTX130B includes:
H The RTX130B QAM & VSB RF Signal Generator User Manual (Tektronix
Example: The Diagrams section, beginning on page 6-1, includes a block
diagram and an interconnect diagram.
part number 071-1933-00) contains a tutorial to quickly describe how to
operate the RTX130B. It also includes an in-depth discussion on how to use
the RTX130B features.
xiv
RTX130B QAM & VSB RF Signal Generator Service Manual
Introduction
This manual contains information needed to properly service the RTX130B
QAM & VSB RF Signal Generator, as well as general information critical to safe
and effective servicing.
To prevent personal injury or damage to the RTX130B, consider the following
before attempting service:
H The procedures in this manual should be performed only by a qualified
service person.
H Read 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 RTX130B does not meet performance criteria, repair is necessary.
This manual contains all the information needed for periodic maintenance of the
RTX130B.
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 4, Maintenance. To remove and
replace any failed module, follow the instructions in Removal and Installation
Procedures, also part of Section 4. After isolating a faulty module, replace it
with a fully-tested module obtained from the factory. Section 7, Replaceable
Parts List, contains part number and ordering information for all replaceable
modules.
RTX130B QAM & VSB 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 RTX130B.
They have access to the latest information on improvements to the RTX130B 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 l ocations or you can visit our Web site for
service information: www.tektronix.com.
Tektronix supports repair to the module l evel 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
RTX130B QAM & VSB RF Signal Generator Service Manual
Specifications
Product Overview
The RTX130B QAM & VSB RF Signal Generator generates QAM and 8VSB
modulated signals that are compliant with the DVB-C/ITU-T J.83 Annex A/B/C
and ATSC standards. In addition to the RF signal output feature, the RTX130B
records and plays MPEG-2 transport streams that are compliant with ATSC,
DVB, and ARIB standards.
The RTX130B provides the following features:
H 16/64/256QAM and 8VSB modulation formats
H Modulation frequency range: 50 MHz to 860 MHz
H 44 MHz or 36 MHz IF output
H Support the following standards:
H DVB-C/ITU-T J.83 Annex A (Option M1)
H ITU-TJ.83AnnexB(OptionM2)
H ITU-TJ.83AnnexC(OptionM3)
H ATSC (Option M4)
H Data rate: 200 Mbps maximum (RAM mode); 256 Kbps minimum
H Hierarchy display of stored or captured transport streams
H 188, 204, 208 bytes packet size, S-TMCC, M-TMCC, non transport stream,
and partial transport stream output formats
H Real-time updating of stream parameters; continuity_counter, PCR/PTS/
DTS, TOT/TDT/STT, NPT, and Reed Solomon (ISDB-T only)
H Continuous recording of captured streams
H PCR jitter insertion
H Triggered stream capture
H Full remote control using Ethernet interface
H Scheduler application for automated stream playout and record (Option SC
only)
H Playout on one interface at a time, either IP or QAM/VSB interfaces
H Two IP versions namely IPv4 and IPv6 are supported
RTX130B QAM & VSB RF Signal Generator Service Manual
1-1
Product Overview
H Stream replication (IP) with some attributes of hte stream incremented by a
certain value
The RTX130B includes the ReMux application software that provides the
capability to create a transport stream of super frame structure defined in the
ISDB-S systems from an MPEG2 transport stream.
1-2
RTX130B QAM & VSB RF Signal Generator Service Manual
Specifications
Software Protection
Tables 1-1 through 1-4 list the functional, electrical, mechanical, and environmental characteristics of the RTX130B. Table 1-5 lists the national and
international standards to which the RTX130B complies.
All listed specifications are guaranteed unless labeled “typical”. Typical
specifications are provided for your convenience but are not guaranteed.
The RTX100B software options require that a software key, and beginning with
V10.1, an OptionDongle be installed so that the purchased set of options can be
accessed.
CAUTION. The software key/OptionDongle must be installed on the instrument
before the RTX100B software application will operate.
The software key is the character string which is entered into the Option Update
Key string field. Beginning with V10.1, an OptionDongle is also provided. The
OptionDongle is a small hardware device that is available in parallel port form.
The software key and the OptionDongle work together; the software polls the
OptionDongle at the beginning of the application and during the Play and Record
to verify the option coding. The type of software key used by your test system is
determined at the time of the original product order.
Any printer compatible with the installed operating system can be connected to
the unit through the parallel port version of the OptionDongle.
Performance Conditions
The electrical characteristics listed on the following pages are valid under the
following conditions:
H The RTX130B must be in an environment where the t emperature, altitude,
humidity, and vibration conditions are within the operating limits described
in Table 1-4 on page 1-13.
H The RTX130B must have a warm-up period of at least 20 minutes.
H The RTX130B must be operating at an ambient temperature between
+5 _Cto+40_C, unless otherwise noted.
RTX130B QAM & VSB RF Signal Generator Service Manual
1-3
Specifications
Functional Specifications
Table 1-1: Functional specifications
Characteristics Description
System configuration
System OS Windows XP Professional
CPU 1.3 GHz
System memory 1GB
Display 6.3 inch, XGA (1024 x 768), Windows Control Panel setting is SVGA (800 x 600)
Hard disk drive 250 GB
Expansion slot 1-PCIslot
Electrical Specifications
Table 1-2: Mainframe
Characteristics Description
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)
RAM ≥200 Mbps
Internal reference clock For Output_clock, PCR/PTS/DTS, packet operation timing, and TDT/STT time.
Frequency 27 MHz ± 1 ppm when manufactured.
Stability ± 0.5 ppm per year
± 1 ppm over temperature range
External reference/clock input
Connector type BNC
Input impedance, typical 50 Ω
Reference input
Frequency 8.129698 MHz, 10 MHz, and 27 MHz
Input level, typical Sine wave: 0 ± 6dBm
Square wave: 0.5 Vp-p to 3.0 Vp-p
Clock input
1-4
RTX130B QAM & VSB RF Signal Generator Service Manual
Table 1-2: Mainframe (Cont.)
Characteristics Description
Frequency 160 kHz to 25 MHz (parallel clock)
1.28 MHz to 32 MHz (serial clock)
Input level, typical 0.5 V to 3.0 V
External trigger input/MISC output
Connector type BNC
Input impedance, typical 1kΩ
Threshold level Rising and falling edges are programmable.
High level >3.5 V (maximum input voltage: 7 V)
Low level <0.8 V
Output level
High level >2.2V(with50Ω termination)
Low level <0.8V(with50Ω termination)
Output impedance 50 Ω
Specifications
RTX130B QAM & VSB RF Signal Generator Service Manual
1-5
Specifications
Table 1-2: Mainframe (Cont.)
Characteristics Description
PLL
Frequency 50 MHz to 100 MHz, locked to reference clock
Output clock 50 MHz maximum (serial clock)
26.75 MHz maximum (parallel clock)
Output rate 214 Mbps maximum
64 Kbps minimum
TS clock
TS clock = (X / (2 * Y * Z) ) * 27 MHz
(Internal and external
reference, 27 MHz and 10 MHz)
(External parallel clock) TS clock = (X / (2 * Y * Z) ) * external parallel clock, 214 MHz maximum
(External serial clock) TS clock = (X / (2 * Y * Z) ) * external serial clock / 8,32 MHz maximum
P/N and Jitter (serial clock) < --104 dBc/Hz at 21.455707 MHz +20 kHz (RBW=300 Hz)
SPI interface
Connector type D-sub, 25 pin
Data rate 256 Kbps to 214 Mbps
Pin assignments 1 DCLK
15362 < X < 31248
1686 < Y < 3376
2 ≤ Z ≤ 65536
15632 < X < 31248
1 < Y < 16383
2 ≤ Z ≤ 65536
15632 < X < 31248
1 < Y < 16383
2 ≤ Z ≤ 65536
2GND
3to10 DATA7toDATA0
11 DVALI D
12 PSYNC
13 Shield
14 DCLK
15 GND
16 to 23 DATA 7
24 DVALID
25 PSYNC
to DATA 0
1-6
RTX130B QAM & VSB RF Signal Generator Service Manual
Table 1-2: Mainframe (Cont.)
Characteristics Description
Output
Output level, typical 330 mV to 550 mV (termination: internal 100 Ω, external 100 Ω), bus LVDS with 50 Ω
termination
Offset 1.1 V to 1.5 V
Output resistance, typical 100 Ω, between differential outputs (output off)
Data delay, typical ± 5 ns from the falling edge of DCLK (see Figure 1-1 on page 1-12)
Input
Input level, typical > +100 mV, < --100 mV, (RI+)--(RI--) with 100 Ω termination
Input resistance, typical 100 Ω (between differential inputs)
Clock pulse width, typical T/2 ± T/10, T=1/f (f=byte clock frequency) (see Figure 1-1 on page 1-12)
Data hold time, typical T/2 ± T/10, T=1/f (f=byte clock frequency, data are latched on DCLK rising edge)
(see Figure 1-1 on page 1-12)
ASI/SMPTE310M interface
Connector type BNC
Impedance 75 Ω
Data rate 256 Kbps to 214 Mbps (ASI), 19.3 Mbps (SMPTE310M)
Output
Output voltage 800 mV ± 10%
Jitter (ASI) ≤ 0.2 UI p--p
Jitter (SMPTE310M) Past 1stedge < 1.4 ns
Rise/fall time ASI: ≤ 1.2 ns (20% to 80%)
Return loss ASI: < --17 dB (5 MHz to 270 MHz) into 75 Ω load
Input
Input voltage, typical 200 mV to 880 mV
Return loss ASI: < --17 dB (5 MHz to 270 MHz) into 75 Ω load
Data format Accepts both byte and packet modes.
nd
Past 2
Prev 1
edge < 2ns
st
edge < 1.4 ns
SMPTE310M: 0.4 ns ≤ X ≤ 5 ns (20% to 80%)
SMPTE310M: < --30 dB (5 MHz to 38.7 MHz) into 75 Ω load
SMPTE310M: < --17 dB (5 MHz to 38.785316 MHz) into 75 Ω load
Specifications
RTX130B QAM & VSB RF Signal Generator Service Manual
1-7
Specifications
Table 1-2: Mainframe (Cont.)
Characteristics Description
RF/IF output
Connector type BNC
Output impedance, typical 75 Ω
Digital modulation standard
DVB-T/ITU-T J8.3 Annex A (Option M1)
The following parameters conform to the standard:
Symbol rate: 1 Msps to 6.9565 Msps (IF output)
Modulation: 16/64/256QAM
Outer cording: RS (204, 188)
Roll off: 0.15
ITU-T J.83 Annex B (Option M2)
The following parameters conform to the standard:
Symbol rate: 5.056941/5.360537 Msps
Modulation: 64/256QAM
Outer cording: RS (128, 122)
Roll off: 0.18/0.12
Interleaving: Level 1 (64 QAM only)
5 Msps to 6.9565 Msps (RF output)
I=128, J=1
Level 2
I=128, J=1 (Control Word: 0001)
I=64, J=2 (0011)
I=32, J=4 (0101)
I=16, J=8 (0111)
I=8, J=16 (1001)
I=128, J=1 (0000)
I=128, J=2 (0010)
I=128, J=3 (0100)
I=128, J=4 (0110)
I=128, J=5 (1000)
I=128, J=6 (1010)
I=128, J=7 (1100)
I=128, J=8 (1110)
1-8
ITU-T J.83 Annex C (Option M3)
The following parameters conform to the standard:
Symbol rate: 1 Msps to 5.3097 Msps (IF output)
5 Msps to 5.3097 Msps (RF output)
Modulation: 64QAM
Outer cording: RS (204, 188)
Roll off: 0.13
ITU-T J.83 Annex C-JCTEA
The following parameters conform to the standard:
Symbol rate: 5.274 Msps
Modulation: 64QAM
Outer cording: RS (204, 188)
Roll off: 0.13
RTX130B QAM & VSB RF Signal Generator Service Manual
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