Tektronix AD951A, AD953A User Manual
User Manual
AD951A/AD953A
MPEG Test System
Volume 1 of 2
071-1423-00
This document supports firmware versions:
AD95X MPEG Test Systems Version 6.7
AD960 Data Test Systems Version 3.0
www.tektronix.com
Copyright ©Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its
suppliers and are protected by United States copyright laws and international treaty provisions.
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph
(c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013, or
subparagraphs (c)(1) and (2) of the Commercial Computer Software -- Restricted Rights clause at FAR
52.227-19, as applicable.
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, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Trademarks and Patents
Windows™ is acknowledged as a trademark of Microsoft£ Corporation.
Pentium™ is acknowledged as a trademark of Intel Corporation.
HOTLink™ is acknowledged as a trademark of Cypress Semiconductor Corporation.
Dolby™ and the Double-D symbol are trademarks of Dolby Laboratories.
All trademarks acknowledged.
Licensed AAC Patents
08/937,950 5848391 5,291,557 5,451,954 5 400 433
5,222,189 5,357,594 5 752 225 5,394,473 5,583,962
5,274,740 5,633,981 5 297 236 4,914,701 5,235,671
07/640,550 5,579,430 08/678,666 98/03037 97/02875
97/02874 98/03036 5,227,788 5,285,498 5,481,614
5,592,584 5,781,888 08/039,478 08/211,547 5,703,999
08/557,046 08/894,844 5,299,238 5,299,239 5,299,240
5,197,087 5,490,170 5,264,846 5,268,685 5,375,189
5,581,654 05-183,988 5,548,574 08/506,729 08/576,495
5,717,821 08/392,756
It is a condition of these licensed products that they may not be copied, except to make single copies for
archival purposes, and may not be decompiled or reverse engineered.
Software Warranty
Tektronix warrants that the media on which this software product is furnished and the encoding of the
programs on the media will be free from defects in materials and workmanship for a period of three (3)
months from the date of shipment. If a medium or encoding proves defective during the warranty period,
Tektronix will provide a replacement in exchange for the defective medium. Except as to the media on
which this software product is furnished, this software product is provided “as is” without warranty of any
kind, either express or implied. Tektronix does not warrant that the functions contained in this software
product will meet Customer’s requirements or that the operation of the programs will be uninterrupted or
error-free.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the
expiration of the warranty period. If Tektronix is unable to provide a replacement that is free from defects in
materials and workmanship within a reasonable time thereafter, Customer may terminate the license for this
software product and return this software product and any associated materials for credit or refund.
THIS WARRANTY IS GIVEN BY TEKTRONIX 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’ RESPONSIBILITY TO REPLACE DEFECTIVE MEDIA OR REFUND
CUSTOMER’S PAYMENT 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
Volume 1
Volume 2
Preface iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Material iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Conventions iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contacting Tektronix iv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
Transport Stream Analyzer Sect. 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packetized Elementary Stream Analyzer Sect. 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T-STD Buffer Analyzer Sect. 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tracer Sect. 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Player Sect. 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Monitor/Recorder Sect. 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transport Stream Editor Sect. 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multiple Sect. 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Make Seamless Wizard Sect. 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stream Monitor Plus Sect. 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Elementary Stream Analyzer Sect. 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BS Digital Multiplexer Sect. 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BC Digital Multiplexer Sect. 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Carousel Analyzer Sect. 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Carousel Generator Sect. 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transport Stream Maker Sect. 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transport Stream Cutter Sect. 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ScriptP Sect. 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Custom SI Scripting Sect. 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AD951A/AD953A MPEG Test System User Manual
i
Table of Contents
ii
AD951A/AD953A MPEG Test System User Manual
Preface
This manual describes the software applications available to the Tektronix
AD951A/AD953A MPEG Test System. All applications are installed; access will be
dictated by the security dongle and those options purchased.
The manual is divided into sections, each describing one application. An overview of the
applications is provided in the Introduction section.
Related Material
Getting Started Manual (071-1422-xx)
Describes the installation of the MPEG Test System.
Additional documentation, such as ReadMe files, may be included on the installation disks.
The following URLs access the Web sites for the standards organizations listed (the URLs
listed were valid at the time of writing):
x MPEG-2 standards (International Organization for Standards) - http://www.iso.ch/
x DVB standards (European Technical Standards Institute) - http://www.etsi.org/
x ATSC standards (Advanced Television Systems Committee) - http://www.atsc.org/
Manual Conventions
Naming conventions for the interface elements are based on standard Windows naming
conventions. Naming conventions for MPEG-2, ATSC, and DVB structures follow the
conventions derived from the standards documents listed above. In addition, the following
formatting conventions apply to this manual:
Bold text refers to specific interface elements that you are instructed to select, click, or
x
clear.
Example: Select
x Boxed text represents buttons on the user interface.
Example: Select Trigger on the Setup dialog.
x Mono-spaced text can indicate the following:
x Text you enter from a keyboard
Example: Enter the network identity (http://TSMonitor01)
x Characters you press on your keyboard
Example: Press
x Paths to components on your hard drive
Example: The program files are installed at the following location: C:\Program
Files\Tektronix\
Settings from the Configuration menu.
CTRL+C to copy the selected text.
AD951A/AD953A MPEG Test System User Manual iii
Preface
Contacting Tektronix
Phone 1-800-833-9200*
Address Tektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
Web site www.tektronix.com
Support - N & S America
Sales support 1-800-833-9200, select option 1*
Service support 1-800-833-9200, select option 2*
Technical support Email: techsupport@tektronix.com
1-800-833-9200, select option 3*
* - toll free in North America.
6:00 a.m. -- 5:00 p.m. Pacific time
After office hours, please leave a voice mail
message.
Support - Europe & the Rest of the World
Sales Support +44 (0)1344 392000
Service & Technical Support
Telephone +44 (0)1223 200700
Fax +44 (0)1223 200701
iv AD951A/AD953A MPEG Test System User Manual
Introduction
Introduction............................................................. 3
The Software Suite.................................................. 3
Proprietary Analysis Software ................................ 6
MPEG Files............................................................. 7
Format............................................................... 7
Locations .......................................................... 7
AD951A/AD953A MPEG Test System User Manual 1
Introduction
2 AD951A/AD953A MPEG Test System User Manual
Introduction
All applications in the MPEG Test System family operate under a Windows operating
system (refer to the Specifications section in the AD951A/AD953A Technical Reference
Manual, 071-1425-xx).
The Software Suite
Table 1 lists the applications available to the MPEG Test System. The table shows which
applications are included in the standard installation (
that can be enabled as an upgrade option (
Table 1: AD951A/AD953A Software Applications
Section
Number
1 Transport Stream (TS) Analyzer
Desktop
Icon
Introduction
); also shown are those applications
).
Application \ Product AD951A AD953A
Transport stream analysis with user-selectable
MPEG-2, DVB and ATSC conformance tests.
Shows transport structure, header contents,
hexadecimal packet contents, PCR timing
/transport rate graphs and an error message log.
TS Analyzer Lite
As for the TS Analyzer except that the file size of
transport streams to be analyzed is limited to
192 MB.
2 Packetized Elementary Stream (PES)
Analyzer
PES analysis with selectable test options. Shows
PES program structure, header contents, packet
contents, PTS/DTS timing graphs and analysis
reports.
3 Transport Stream – System Target
Decoder (T-STD) Buffer Analyzer
Analyzes program streams modeling their
behaviour in, and their conformance to, the
MPEG-2 T-STD Buffer Model.
4 Tracer
Views the message log produced by T-STD
Buffer Analyzer.
5
Player
Records and Plays out MPEG-2 streams.
AD951A/AD953A MPEG Test System User Manual 3
Introduction
Table 1: AD951A/AD953A Software Applications
Section
Number
Desktop
Icon
Application \ Product AD951A AD953A
6
7
8
9
TS Monitor/Recorder
Monitors and/or Records MPEG-2 transport
streams – gives viewing of the transport stream
multiplex, triggered and filtered recordings,
logging of events and generation of an external
alarm signal linked to transport stream events.
TS Editor
Viewing and Editing of transport stream packets,
via a hexadecimal view of the packet contents
and semantic interpretation of the header.
Provides facilities to: remap PIDs, recalculate
PCR values and introduce PCR inaccuracies.
Multiplexer
Multiplexes table information and packetised
elementary streams together to synthesise new
transport streams. A fine level of control is
provided to allow non-conformances and test
cases to be specified for new transport streams.
Make Seamless Wizard
Guides the user through the process of creating
an MPEG-2 file for use by Stream Player in
continuously looped operation.
10
11
12
Stream Monitor Plus
Monitors one or more transport streams.
Updates graphs, status displays and event logs in
real time.
Can make sequences of recordings, unattended,
whenever user specified events occur.
Elementary Stream Analyzer
Elementary Stream analysis at video picture and
audio level. This includes vector graphs and
macroblock picture quality.
Broadcast Satellite Digital
Multiplexer
The BSDM allows multiple transport streams,
together with TMCC information, to be
multiplexed into a BS Digital stream. A single
transport stream may also be exported from an
existing BS Digital stream.
4 AD951A/AD953A MPEG Test System User Manual
Table 1: AD951A/AD953A Software Applications
Section
Number
Desktop
Icon
Application \ Product AD951A AD953A
Introduction
13
Broadcast Cable Digital Multiplexer
The BCDM allows multiple transport streams,
together with TSMF information, to be
multiplexed to produce ISDB-C streams (TSMF
streams). It can also demultiplex existing TSMF
streams and allow the TSMF to be edited.
14 Carousel Analyzer
Data analysis showing structure, bitrate,
repetition rate, syntax and semantics of data
items.
15
16
17
Carousel Generator
Provides in-depth off-line generation of MPEG-2,
DVB transport streams containing a range of
data broadcast protocols.
TS Maker
Creates and initialises files for recording.
TS Cutter
Extracts sections of MPEG-2 files to new files.
18 Script Pad
Enables users to create and modify System
Information (SI) scripts.
19 Custom SI Scripting
A background document which describes the
scripting arrangements of the AD951A/AD953A.
Documentation only
Standalone Operation
All applications (with the exception of Player, Monitor/Recorder and Stream Monitor Plus)
are available as standalone options that can be installed and used on a PC (For more
information about the PC specification required, refer to the AD951A/AD953A Technical
Reference Manual, 071-1425-xx).
Upgrading
Upgrades are available for the following products:
x AD95x MPEG Test System
x AD951A/AD953A MPEG Test System
x Standalone MPEG Test System.
All applications are available for upgrading, with the exception of Player, Monitor/Recorder
and Stream Monitor Plus in standalone systems.
AD951A/AD953A MPEG Test System User Manual 5
Introduction
Proprietary Analysis Software
Analysis of proprietary DTV standards is carried out in the MPEG Test System by
the addition of plug-in modules. Where these are supplied, any documentation
provided will be included in Adobe PDF format as part of the installation procedure.
For information on the range and availability of proprietary analysis software, please
contact Tektronix directly or an approved representative.
6 AD951A/AD953A MPEG Test System User Manual
MPEG Files
Format
All files created by MPEG Test System applications start on a packet boundary. That is the
first byte of a file contains the first byte of the first packet in that file.
Files which are produced or modified by other equipment or software must conform to this
convention if they are to be opened by MPEG Test System applications. No harm will occur
to a MPEG Test System if a file with an invalid format is opened.
Locations
MPEG Test System hardware uses two types of disk drives. The operating system, MPEG
Test System applications and general data are stored on a standard computer hard disk
drive. This is usually configured as Drive C:
Recording and playout of ATSC, DVB and MPEG-2 streams requires much higher data
transfer rates and consistency of performance. To achieve this, a high performance disk
drive is incorporated.
Introduction
Other than the greater performance there is no difference in the function of the two types of
disk drives. Files may be copied to and from the high performance drives in the same way
as for the standard drives.
Additional high performance drives may be connected to a MPEG Test System. These will
be mapped to other drive letters if Drive E: is already taken. If the MPEG Test System was
supplied with extra disks configured, these will be documented in the Delivery Note.
AD951A/AD953A MPEG Test System User Manual 7
Introduction
8 AD951A/AD953A MPEG Test System User Manual
Section 1
Transport Stream Analyzer
This section describes the Transport Stream Analyzer software.
If you have purchased the AD-TSAL software option, the functionality is exactly the same, except that the
file size of transport streams to be analysed is limited to 192 MB.
Description of Features ...........................................3
Starting the Program................................................5
Initial Appearance.............................................6
Initial Menu Options.........................................6
Packet Size Selection...............................................9
Stream Test Settings..............................................10
MPEG2 Test Options......................................12
DVB Test Options ..........................................13
ATSC Test Options ........................................16
Scripts and Modules ..............................................17
Handling Scripts and Modules .......................18
Script and Module Selection...........................19
Expert Mode ...................................................20
Opening a file ........................................................22
SI Filtering......................................................25
Storing SI information ....................................28
Menus and Controls ..............................................29
Menus and Options.........................................29
Toolbars ..........................................................34
Status Bar........................................................36
Slider Bar........................................................37
Find Transport Packet ...........................................39
Search by Criteria ...........................................40
Goto Packet.....................................................41
Transport Navigator ..............................................42
Transport Structure Diagram..........................43
Selecting a PID ...............................................44
Looking at the SI/PSI/PSIP Tables.................46
Table Structure ......................................................47
Looking at the Packets ................................... 47
Looking at the Complete Table (Hex View).. 53
Transport Packet Hex View.................................. 54
Packet Size ..................................................... 55
Packet Header ................................................ 55
Adaptation Fields ........................................... 56
Transport Private Data ................................... 56
Transport Packet Header ...................................... 57
Adaptation Fields ........................................... 58
Message Log......................................................... 59
Packet Selection ............................................. 60
Multiplex Statistics............................................... 62
Histogram View ............................................. 62
Pie Chart View............................................... 67
Graphing Features................................................. 68
PCR Statistics Graphs........................................... 72
PCR Interval................................................... 72
Arrival Time Jitter (Arrival) .......................... 73
Inaccuracy (PCR-AC) .................................... 74
Overall Jitter (PCR-OJ).................................. 75
Frequency Offset (PCR-FO) .......................... 76
PCR Drift Rate Measurement (PCR_DR) ..... 76
Bit Rate Graphs .................................................... 77
Instantaneous Transport Rate (ITR)............... 77
PID Bitrate ..................................................... 80
Electronic Program Guide .................................... 81
Schedule Window .......................................... 83
References ............................................................ 85
AD951A/AD953A MPEG Test System User Manual 1
1 - Transport Stream Analyzer
2 AD951A/AD953A MPEG Test System User Manual
Transport Stream Analyzer - 1
Description of Features
The Transport Stream Analyzer allows the contents of a previously recorded or synthesised
transport stream to be interpreted and viewed in a variety of formats. It also performs a
series of user selectable MPEG-2, DVB and ATSC conformance tests. Errors found in
specific packets are cross-referenced to enable each packet to be selected from the reference
in the conformance report.
Information can be viewed in graphical and textual formats. To analyze and view the
Packetised Elementary Stream (PES) packets use the companion program PES Analyzer,
which can be run at the same time as this TS Analyzer. More than one instance of the
program can be run simultaneously. This allows comparison of different files.
The functionality provided includes:
x Histogram or pie chart display of multiplex structure showing the Packet Identifier (PID)
of all packets that are present in the stored file.
x Diagrammatic display and interpretation of Transport Stream packet header and
adaptation field information for individual packets.
x Hexadecimal representation of Transport Stream packet, with color coding to
differentiate the header, adaptation field and payload information.
x Location of a Transport Stream packet to match a particular condition in the packet
header.
AD951A/AD953A MPEG Test System User Manual 3
1 - Transport Stream Analyzer
x Electronic Program Guide for DVB and ATSC streams.
x Display and interpretation of MPEG-2 Program Specific Information (PSI) tables:
x Program Association Table (PAT)
x Conditional Access Table (CAT)
x Program Map Table (PMT)
x Transport Stream Description Table (TSDT)
x Network Information Table (NIT)
x Display and interpretation of DVB Service Information (SI) tables:
x Network Information Table (NIT) as defined by DVB
x Bouquet Association Table (BAT)
x Service Description Table (SDT)
x Event Information Table (EIT)
x Running Status Table (RST)
x Time and Date Table (TDT)
x Stuffing Table (ST)
x Time Offset Table (TOT)
x Discontinuity Information Table (DIT)
x Selection Information Table (SIT)
x Single Frequency Network (SFN) information
x Display and interpretation of ATSC Program and System Information Protocol (PSIP)
tables:
x Master Guide Table (MGT)
x System Time Table (STT)
x Terrestrial Virtual Channel Table (TVCT)
x Cable Virtual Channel Table (CVCT
x Regional Ratings Table (RRT)
x Event Information Table (EIT)
x Extended Text table (ETT)
x Display and interpretation of ATSC A/57 table (Ref [2]:ATSC Standard A/57)
x Program Information Table (PIT)
x Display and interpretation of ARIB tables
x
Network Information Table (NIT)
x Service Description Table (SDT)
x Event Information Table (EIT)
x Stuffing Table (ST)
x Time Offset Table (TOT)
x Discontinuity Information Table (DIT)
x Selection Information Table (SIT)
x Broadcaster Information Table (BIT)
x Linked Description Table (LDT)
x Network Board Information Table (NBIT)
4 AD951A/AD953A MPEG Test System User Manual
Transport Stream Analyzer - 1
x Software Download Trigger Table (SDTT)
x Common Data Table (CDT)
x ISDB-T Information Packet (IIP)
x Statistical display of the components of the Transport Stream and their data rates on a
PID by PID basis.
x Calculation and graphical display of the instantaneous bit rate for each PID and for the
entire Transport Stream from Program Clock Reference (PCR) time stamp values.
x Calculation and graphical display of PCR information:
x The arrival interval between successive PCRs on a PID by PID basis.
x The PCR accuracy for each PCR on a PID by PID basis.
x The network, or arrival time, jitter on a PID by PID basis.
x The overall jitter on a PID by PID basis.
x The PCR frequency offset on a PID by PID basis.
x The PCR drift rate on a PID by PID basis.
Starting the Program
The program may be started by selecting
the
Tektronix TS Analyser option from the
Start -> Programs menu.
or
by double clicking on the
Tektronix TS Analyser
Shortcut on the desktop.
AD951A/AD953A MPEG Test System User Manual 5
1 - Transport Stream Analyzer
Initial Appearance
Once the program has started and is ready for use it will open a Main Window. When the
program starts the main window looks like this:
The Toolbars (rows of buttons above the dark grey area of the empty window) provide
quick access to the main menu functions. The toolbars can be docked on any edge of the
window or floated (see page 29 et seq).
The Status line at the bottom of the window displays status information and tooltips and,
because no file is open, that 0% of a stream file has been analysed.
Above the Status line is the Slider bar, for selecting packets within the file. This may be
moved to the top of the window or floated.
Initial Menu Options
Users are presented with different menus and options, depending on whether or not a file is
open for analysis. The menu options available when the program has just been started, or
after a file is closed, are given below. Greyed out options are not available at this time.
(A check mark
9 means that it is hidden.)
9 next to an option shows that the window or toolbar is currently visible; no
6 AD951A/AD953A MPEG Test System User Manual
Transport Stream Analyzer - 1
File Menu Options
Open ... Opens a stream file for analysis. The
program opens the file selection
dialogue allowing the user to choose
the required file.
Print Setup ... Opens a dialogue for selecting which
printer and associated options to use.
1 <filename> A list of the four most recently
2 <filename> analysed files. If the program has
3 <filename> recently been installed the list may
4 <filename> be empty or hold less than four files.
Selecting a filename opens that file
for analysis.
Exit Finishes running the program.
View Menu Options
Toolbar Ź Shows or hides the sub-menu which
allows the toolbars to be hidden or
shown.
Settings Menu options
Message Log Toggles the Message Log window
between being displayed or not.
Tests… Displays a dialog for selecting the
tests to be used in stream analysis.
Stream Interpretation… Displays a dialog for
selecting scripts and modules to be
used in stream analysis.
Packet Size Allows the packet size of the
incoming stream to be designated.
Display Filter… Allows designated table Ids to be
filtered from the Transport Navigator
display.
Store all SI When enabled, stores all SI
information during analysis. When
disabled, data for tables that are
filtered out is not stored.
AD951A/AD953A MPEG Test System User Manual 7
1 - Transport Stream Analyzer
Help Menu Options
About StreamAnalyser… Displays Program
Number, Version and copyright
information.
8 AD951A/AD953A MPEG Test System User Manual
Transport Stream Analyzer - 1
Packet Size Selection
Specifies which packet size will be used to interpret the stream. (N.B. selecting the wrong
packet size will cause analysis to report large numbers of errors, and the Transport
Navigator and other views to show nonsense.) The options are:
Select
Packet Size from the Settings menu to open the
Transport Packet Size dialog.
Note that the Packet Size dialog is available when a file is
open, but all activity is disabled.
The following dialog is displayed:
Auto detect packet
size
Automatically detect the packet size used in a file when it is
opened. If the program fails to determine the correct packet size
it can be selected using the other Packet Size options.
188 byte packets
204 byte packets
Analyze files as a stream of 188 byte packets.
Analyze files as a stream of 204 byte packets.
If large numbers of errors are reported during analysis, try selecting a different packet size.
AD951A/AD953A MPEG Test System User Manual 9
1 - Transport Stream Analyzer
Stream Test Settings
The stream Test Settings can only be modified before opening a file. To change these
settings and options once a file has been opened: the file must be closed, the settings
modified and the file re-opened.
Select
Tests... from the Settings menu to open the Test
Settings dialog.
Note that the
Tests… option is not available when a file is
open.
The Test Settings dialogue contains a number of tabbed pages as described below:
Tabs are shown only for the test sets available, as set in the Stream Interpretation screen.
General Tests
SI/PSI/PSIP Tables
Conformance Checks
IS/PSI/SI Descriptor
Conformance Checks
Mandatory Descriptors
The ATSC standard, in particular, specifies differences in the allowed and mandatory
descriptors based upon whether the context is cable, satellite or terrestrial. The analyzer does
not know the intended context, so may log warnings that do not apply in all contexts. In
these situations the log will indicate the contexts that are relevant.
10 AD951A/AD953A MPEG Test System User Manual
Enables conformance check of the SI/PSI tables.
Enables conformance checks of the SI/PSI descriptors.
Checks for inclusion of mandatory descriptors within each
SI/PSI table.
Transport Stream Analyzer - 1
Message Control
Message Control is used to limit the level of error reporting during analysis. Select the error
level required.
Limit Repeat Errors
Multiple reports (greater than 20) of errors can be limited, by enabling the Limit Repeat
Errors
checkbox.
When this option is enabled, up to 20 reports are made for a single error type, but thereafter
a the total in excess of twenty is displayed at the end of the analysis.
AD951A/AD953A MPEG Test System User Manual 11
1 - Transport Stream Analyzer
MPEG2 Test Options
These test options are laid out in a similar hierarchy to the conformance specifications in
the MPEG-2 standard. For a full description of each test, see section 2.3.2.1 of the MPEG-2
standard ISO/IEC 13818-4 (Ref [9]). The dialog uses the same names as those used in the
standard.
Enable an option in the dialog to check for conformance to that part of the specification. A
test is enabled when there is a check mark in the box. Conformance is not tested when the
box is not checked.
12 AD951A/AD953A MPEG Test System User Manual
Transport Stream Analyzer - 1
DVB Test Options
These test options are laid out according to the Priority scheme used in the conformance
specifications for the DVB standards. Refer to section 5.2 of the DVB standard TR 101 290
(Ref [1]) for a full description. The dialog uses the same names as those in the standard.
Enable an option to check for conformance to the related part of the specification. An
option is enabled when there is a check mark in the box. Conformance is not tested when
the box is not checked.
DVB 2.2 CRC-error and MPEG CRC tests refer to the same test and are linked in these
dialogs. Enabling/Disabling either test in one of the dialogs will also enable/disable the test
in the other dialog.
DVB tests also apply to both ISDB-S and ISDB-T standards.
AD951A/AD953A MPEG Test System User Manual 13
1 - Transport Stream Analyzer
Single Frequency Network (SFN) Errors
SFN error analysis is only applicable in DVB interpretation mode. The option is enabled
when there is a check mark in the box. Conformance is not tested when the box is not
checked.
All of the tests specified in DVB standard TR 101 290 (Ref [1]) are carried out.
Although MIPs are not SI tables, they are listed in the Transport Navigator window as such
for convenience. SFN errors are presented in the Message Log.
14 AD951A/AD953A MPEG Test System User Manual
Loading...