Tektronix MTS400 Series User manual

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MTS400 Series

ZZZ

MPEG Test Systems

Release Notes

This document applies to software version 1.9

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Release Notes

These release notes provide the following information for version 1.9 of the MTS400 Series MPEG Test Systems:

Document part numbers

Features in this version

Introdu

ction

Installati while using the instrument and explanations of how you can minimize or eliminate the impact on instrument operation

NOTE. To gain access to your version 1.9 MTS400 Series MPEG Test Systems

applications, a software key loaded with version 1.7 permissions (or later) must be available.

Tektronix has redeﬁned the MPEG analyzer with its ground-breaking MTS400 Series MPEG Test Systems and the MTS400 Series portable analyzer software option productivity is provided through many new technical features:

The MT manufacturing test.

The M network operations.

The standalone use on PCs.

on and operational problems or behaviors that you might encounter

s for the MTX100B, RTX100B, and RTX130B instruments. Increased

S430 is well suited for applications in research, development, and

TS415 is equally well suited for applications in broadcasting and

MTS4SA provides the MTS400 Series software applications for

e MTS400P provides the MTS400 Series software applications in a

Th portable conﬁguration.

he MTX100B, RTX100B, and RTX130B instruments with analysis and

T generation options are ideal where portability is required.

A wide variety of applications simplify the complex tasks of creating transport streams for set top box design and manufacturing, as well as triggering and recording intermittent errors during live broadcasts.

NOTE. Analysis software running on RTX100B/RTX130B instruments can only be

used in deferred time, that is, for analysis of ﬁles from disk.

MTS400 Series MPEG Test Systems Release Notes 1

Release Notes

The following i MTS400P, MTX100B, RTX100B, and RTX130B features:

IP and RF Connectivity and Analysis - Acquires transport streams from the network interface for analysis and recording of streams over IP (internet protocol), or RF broadcast interfaces (High Performance Network Interface (MTS415, MTS430, and MTS400P) and RF Interfaces (MTS415 and MTS430)).

CaptureVu™ -Simpliﬁes the task of triggering, recording, and a nalyzing events.

High Performance Engine - Measurement throughput up to 400 Mbps.

Intuitive GUI - A simple, yet powerful GUI (graphic user interface) provides

real time analysis and recording, as well as deferred time analysis.

Languages - Microsoft Windows Unicode fonts provide regional language support.

Hardware/Interfaces (MTS415 and MTS430) - 144 GB of storage, ASI up to 214 Mbps, fast Intel P4 processor, integrated XGA display, and dual Ethernet ports for LAN support a nd GigE transport analysis. (For the equivalent MTS400P, MTX100B, RTX100B, and RTX130B hardware speciﬁcations, refer to the user documentation for those products.)

nformation provides an overview of the MTS400 Series,

Application Packages - Analysis of Audio and Video Elementary Streams, Packetized Elementary Streams, Transport Streams, and Data Broadcasting Streams, as well as Multiplexing Audio, Video, and Data Broadcasti Streams.

International Standards - Support for MPEG-2, ATSC, DVB, and ISDB.

Enhancements - Software Version 1.8

Transport Stream

Compliance Analyzer

PID Filtered Recording: The TSCA can now be set to record only packets containing selected PIDs.

PTS Processing:

PTS processing for PES Private stream types.

PTS-PCR and DTS-PCR graphs: New graphs have been added for

elementary stream PIDs that plot the difference between PTS/DTS values and their associated PCRs.

2.5 PTS Test change: This test has been modiﬁed to measure the interval between PTS samples in terms of PTS value. This value interval is also used to plot the new ‘PTS Value Interval’ graph.

Multiplexer

VBR Delay Factor measurement for RTP streams: A new MDI Delay Factor measurement has been added that gives better results for variable bit rate streams; it is only available when the IP ﬂow is transported over RTP (real-time protocol).

RTP Loss Distribution graph: A new graph is available when analyzing transport s IP interface or the internal network interface card) or in ﬁle-based analysis (PCAP).

ATSC:

Support for multiple sections per transport stream packet

Annex A string editing

treams carried over RTP in real-time (using the GbE Video over

EPG displays CC and Ratings information: The TSCA now processes

rating and closed caption information carried in ATSC EITs, and displays this information in the ATSC EPG view andnexttothevideothumbnails.

A78 Support: Support has been added for the conformance tests deﬁned

in the ATSC A/78 standard (for terrestrial broadcast) and the related cable standard, SCTE 142.

4 MTS400 Series MPEG Test Systems Release Notes

Release Notes

Installation

Using the Cor

Issues (MTS415 and MTS430)

rect Software

Recovery Media

Uninstalling the MTS400

MPEG Player IP Auto

Conﬁgur

ation after

Platform Restore

The following issues affect the installation of the MTS400 Series instruments and/or software on MTS415 and MTS430 platforms only.

Install software version 1.9 only on MTS400 Series instruments with serial numbers B02xxxx and above.

CAUTION. Installing software version 1.9 on MTS400 Series instruments with

serial num

When uninstalling the MTS400, a dialog box may appear listing a number of DLLs that box, and the uninstall will complete successfully.

After restoring an MTS415 or MTS430, running the MpegPlayer for the ﬁrst time (w display. If accepted, the platform will attempt to reboot. The reboot will fail and you must shutdown and restart the platform manually.

bers below B02xxxxx may cause instrument failures.

cannot be deleted from the registry. Clicking OK will close the dialog

ith the IP interface selected) causes the Auto Conﬁguration dialog box to

New Hardware Wizard

e Found New Hardware Wizard opens after the system has started, you must

If th complete the wizard before the instrument will operate properly. (See Figure 1.)

orm the following steps to complete the Found New Hardware Wizard:

Perf

1. In the Found New Hardware Wizard window, enable the No, not this time ion. (See Figure 1.)

opt

2. Click Next to continue.

MTS400 Series MPEG Test Systems Release Notes 5

Release Notes

Figure 1: Found New Hardware Wizard page 1

3. On the second page of the wizard, verify that Install the software automatically (Recommended) is selected. No installation CD or ﬂoppy

disk is required. (See Figure 2.)

4. Click Next to continue.

The wizard will search for the required drivers. When the d rivers are found, the Next button will be enabled.

5. Click Next to proceed.

6 MTS400 Series MPEG Test Systems Release Notes

Release Notes

Figure 2:

Figure 3: Wizard searching for drivers

6. When the Completing the Found New Hardware Wizard dialog box, click

Found New Hardware Wizard page 2

Finish.

7. Select Restart from the Start menu to reboot the MTS400 Series system.

MTS400 Series MPEG Test Systems Release Notes 7

Release Notes

Figure 4:

Completing the wizard

Restoring the MTS415 and MTS430

The M TS400 Series System restore process is described in t he MTS400 Series Quick Start Start User Manual.

If, after the system is restored, you are unable to import the SCSI drives, perform the following steps:

1. Copy the ﬁle "SCSIKeyDel.reg" from the restore DVD to C:\.

2. Doub

3. Whe

4. Reboot the instrument.

5. Use the process described in the MTS400 Series Getting Started Manual to

le-click the ﬁle name, and when prompted to add information to the

registry, press Yes.

n the process has successfully completed, press OK.

Import the SCSI drives.

8 MTS400 Series MPEG Test Systems Release Notes

Release Notes

Installation

Issues (MTX100B, RTX100B, RTX130B, and MTS400P)

MPEG Player Issues

Administrator Rights for

Recording

MPEG Player and TSCA

Application Interaction

For issues affecting the MTX100B, RTX100B, RTX130B, and MTS400P installation, please refer to the product documentation for those products.

The following issues affect the MTS415, MTS430, and MTS400P. The issues will also be relevant for the MTX100B, RTX100B, and RTX130B where the MPEG Player is installed.

TheMPEGPlayerapplicationallowsyoutorecordtoRAM.Youneedlocal administrator rights on the machine to make a recording.

If the MPEG Player application is playing a stream near its maximum bit rate limit (214 Mbps simplex or 107 Mbps duplex), and you start the TSCA application, the instrument may display the message "Mega FIFO empty error" and the player application may stop. Onc the stream again.

A workaround is to ensure that the TSCA is started before playing a stream at high bit rates.

e the TSCA has started, you can start playing

Duplex Support in IP Mode

Maximum IP Playout Bit

Rate

DVB SPI in Port Ignores

the D Valid Setting

Ensure that File Path

is set before Triggered

Recording

The MPEG Player does not support duplex mode (via any interface) when in IP Playout mode.

The maximum playout bit rate supported by the player is determined by the NIC interface setting and Windows Network Component settings.

To reach optimal bit rates, the NIC conﬁgurations should be optimized and the Windows ICS service should be turned off.

When recording using the SPI port marked "DVB SPI In", the setting in the "Ignore Dvalid" check box under the Record > Target dialog box is ignored, and all data will be recorded with Dvalid active and inactive.

The port marked "DVB SPI Out" is capable of both input and output, and this setting is applied correctly. However, recordings made using this port will not be timestamped.

Before performing a triggered recording, ensure that the correct path is set using the File > Save dialog box. If the path is not set, a File Not Found error will be generated when the recording starts.

MTS400 Series MPEG Test Systems Release Notes 9

Release Notes

Incorrect Ouput Position

Indicator

Software Update Mode

Behavior

Rapid scr

oll bar movement

may stop Player

responding

Burst of IP packets at start

of Playout

If the Fixed ES R position indicator may not show the correct position.

When the MPEG Player plays out in the Software Update mode, you may observe the followin

PCR inaccuracy errors might occur at the beginning of every loop.

If PCR errors preexist in a transport stream ﬁle, they will continue to exist across all loops.

Preprocessing the stream with the Make Seamless utility (before playout) prevents these looping errors.

When the scroll bar is moved rapidly in the Record mode, the MPEG Player may stop responding. Clicking the Hierarchical window returns the MPEG Player to the normal state.

When pla few packets. This may result in the burst mode delays not occurring at correct intervals.

ying out in IP mode, a delay (above 250 ms) may occur once in the ﬁrst

ate check box is selected in the Clock dialog box, the output

Simultaneous TSCA and

MPEG Player Triggered

Recording

Data R

ate Auto Converter

for ISDB-Tsb Streams

Player Does Not Use Time

in TDT/TOT Dialog Box

Hierarchical Window Does

Not Always Show Stream

tents

Con

TSCA and the MPEG Player are simultaneously conﬁgured to record for

If the individual triggers events, both the applications are triggered when the ﬁrst trigger event occurs.

Setting the Data Rate Auto Converter (Auto Play) value does not update the bit rate of ISDB-Tsb streams.

During playout, the MPEG Player does not use the time value set in the TDT/TOT dialog box.

While in record mode, the MPEG Player is unable to display the contents of the stream onto the hierarchical window for some transport stream ﬁ les (for example,Test40.mpg) at high bit rates although it is able to receive the transport stream ﬁle.

10 MTS400 Series MPEG Test Systems Release Notes

Release Notes

Transport Str

eam Compliance Analyzer Issues

Administrator Righ ts for IP

Analysis

Lost Packe

ts During Recording on IP Analysis on Low Speciﬁcation PCs

Processing may Become

Strained with Script

Validation enabled in Real

Time Mode

RTP Analysis - Transport

Stream Availability Error

Reporte

d for 204 byte

Packet Streams

The following issues affect the MTS415, MTS430, MTS4SA, and MTS400P. The issues will also be relevant for the MTX100B, RTX100B, and RTX130B where the Transpor

To perform real-time IP analysis using an NIC (network interface card), you must have local administrator rights.

On some low-speciﬁcation PCs ( with old network cards and slower hardware), if you record a stream that is being analyzed over IP using an NIC, packets might be lost. This is because of the hardware dropping Ethernet frames.

If you ena strained. If this occurs, and script validation is required, disable the feature, make a recording in real time, and then per form a deferred analysis on the recording with the feature enabled.

When analyzing a 204 byte packet stream over RTP, the transport stream Availability test will activate at the start of the stream.

t Stream Compliance Analyzer is installed.

ble Script Validation for Real Time Analysis, the TSCA might become

Analyzing RTP Streams

using UDP causes

the TSCA to become

Overwhelmed

Streams Transmitted over

UDP may be recognized as

RTP

IP Packet Interarrival

Timing

When you select an IP session to analyze from the "Browse for UDP ﬂow" dialog box, the TSCA attempts to identify whether it is RTP or UDP, and automatically updates the " Use RTP" check box in the Real-time Analysis Open Transport Stream dialog box. If you manually clear the "Use RTP" and analyze a known

tream, this can cause the TSCA to become overwhelmed and data to be lost.

RTP s

It has been seen very infrequently that UDP sessions are detected as RTP in the "Browse for UDP ﬂow" dialog box. This is due to speciﬁcbytepatternsappearing

he transport stream. If this occurs, clear the "Use RTP" check box manually.

in t

The TSCA uses WinPcap for IP input using an NIC. The timing of WinPcap is affected by the type of processor, hyper-threading and SMP. See the WinPcap change log (http://www.winpcap.org/misc/changelog.htm) for more details.

IP Packet timing measurements using an NIC are based on timestamps averaged over a 40 ms period. You can deﬁne an integration period for the graphical d isplay of average Packet Inter-Arrival Time. The default integration period is 1 second.

MTS400 Series MPEG Test Systems Release Notes 11

Release Notes

Ethernet Packet

Timestamp Smoothing

RTP Droppe

d Packet Test

H.264 Thumbnails with

Recovery Points

Concur

rent Analysis

Behaviour

Under certain c timestamping of Ethernet packets can be delayed within the network interface kernel mode driver when using an NIC.

To overcome this issue, an Ethernet packet arrival smoothing algorithm has been implemented in this release to ensure that erroneous jitter does not affect the transport stream timing measurements. This algorithm results in the smoothing of the PCR Arrival Interval measurement and the associated graphs when using the IP interface through an NIC.

The RTP Dropped Packet tests checks the RTP sequence number of packets leaving the Jitter buffer a fter they have been reordered. The test will fail if the difference in the RTP sequence number between two subsequent packets is greater than one

The TSCA thumbnail decoder does not support H.264 Recovery Points.

It is possible to have multiple instances of the TSCA running at the same time. However, the following behavior should be noted:

onditions of heavy network trafﬁc, it has been noted that

nectiontoVLAN

Con

Sessions using a NIC

Triggers are saved on restarting analysis. The effect of setting a trigger in an instance and restarting analysis will be to cause the trigger to be inherited in other instances when analysis is restarted in those instances.

When a parameter is modiﬁed in one instance, it will be inherited in other instances when analysis is restarted.

The VLAN tag will not appear in the TSCA analysis because, by default, Intel adapters strip the VLAN tag b efore passing IP up the stack.

If you n eed to analyze VLAN sessions, you should update to the latest Intel driver for the NIC, and add a DWORD a registry entry "MonitorModeEnabled" to a value of 1 within:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\↩ {4D36E972-E325-11CE-BFC1-08002BE10318}\00xx

- where xx is the instance of the network adapter.

12 MTS400 Series MPEG Test Systems Release Notes

Release Notes

Transport Str

Errors Repor

Stops and Starts Quickly

eam Compliance Analyzer IPTV Option Issues

The following issue affects the MTS415, MTS430, and MTS400P where the Transport Stream Compliance Analyzer IPTV Option is installed.

ted if Session

If a selected session stops and starts quickly, the Transport Stream Analysis may report transport stream Availability and Continuity Errors, but no errors will appear in the TrafﬁcTable.

Transport Stream Compliance Analyzer GbE Option Issues

The following issues affect the MTS415 and MTS430, where the GbE Option is

nalysis. This will result in dropped packet and continuity count errors.

Packets with IP Checksum

Errors are Discarded

Interface Card Startup

Time

installe

Packets with IP checksum errors will be discarded by the interface card. The user will be notiﬁed that the checksum errors have occurred, but they will not be passed on for a

The Interface Card takes around 90 seconds to boot up after the user logs in. No sessions will be visible during this time.

ah Connection

Cheet

Appears in Network

Connections

Maximum Aggregate Bit

Rates across all Four Ports

Restricted to 3.6 Gbps

ser Active on all Optical

La SFP Ports during Analysis

A connection called "Cheetah Connection" will appear in the Network Connections window. Users must not change any of the settings for this connection, as any modiﬁcations will prevent the interface card from operating.

that the IP address speciﬁed within the Internet Protocol (TCP/IP) settings

Note is not the IP address of the ports on the card. This is set through the TSCA user interface on a port by port basis.

though a user may be analyzing a session through a single port, all four ports

Al are still active. The maximum total bit rate that the card can handle through all ports is 3.6 Gbps.

It should be noted that although only one port can be used for analysis, all ports are active on the card. Therefore, if an optical SFP is plugged into one of the ports not being used for analysis, the laser will be active.

MTS400 Series MPEG Test Systems Release Notes 13

Release Notes

Only Select Active Mode

on Ports with Live

Connections

ES Analyzer Issues

Only Partially Decodes

4:2:2 Pro

Presentation Order is

ﬁle@HighLevel

File

Incorrect

Active mode, us selected on ports with live connections. If active mode is selected for a port without a live connection, the card will attempt to issue live messages, and will block until they can be delivered. This will also prevent ARP and IGMP messages being transmitted on other ports. If you suspect that you have selected a port in active mode on a connection that is not live, restarting the unit will ensure that ARP and IGMP

The follow RTX100B and RTX130B where the ES Analyzer is installed.

4:2:2 Proﬁle@HighLevel ﬁles are only partially supported by the ES Analyzer. It fails to

Sometimes the Presentation Order chart does not present ﬁeld encoded material in the correct order.

correctly recognize the 0x82 Proﬁle/Level type.

ed when ARP a nd IGMP support is required, should only be

messages can be transmitted on the live connections.

ing issues affect the MTS415, MTS430, MTS400P, MTX100B,

Buffer Analyzer Issues

The following issues affect the MTS415, MTS430, MTS4SA, and MTS400P. The issues will also be relevant for the MTX100B, RTX100B, and RTX130B where the Buffer Analyzer is installed.

When private data is processed and the Show All Graphs button is pressed, only the event log pops up. However, The TB and MB graphs can be brought

sing the appropriate buttons.

up u

There is no support for streams which have multiple access units per PES

ket.

pac

When System PIDs are analyzed, the MB graph shows the variations and

tails. However, the trace window does not show any details of the analysis.

14 MTS400 Series MPEG Test Systems Release Notes

Multiplexer Issues

Release Notes

The following issues affect the MTS415, MTS430, MTS4SA, and MTS400P. The issues will also be relevant for the MTX100B, RTX100B, and RTX130B where the Multiplexer is installed.

Elementary stream within other containers, such as *.MP4, Fluxmux and others, are not directly supported.

Incomplete access units (for the last access unit), will be dropped during multiplexing.

On looping small ﬁles, the PAT and PMT table stop time resets to the start time. The repetition interval then becomes zero because there is only one occurrence in each of these table sections.

The multiplexer does not consider the start time of the stream when adjusting the PTS/DTS values of the elementary stream. A workaround for this is to enter a D

Altering some stream properties (like duration) does not affect other stream proper transport stream durations automatically. However, the stream properties can be set manually.

TS offset for the PID equal to its lag against the PCR PID.

ties. For Example, other PIDs do not automatically adjust to new

The Multiplexer does not support H.264 adaptive ﬁeld/frame encoding (AFF). Erroneous DTS and PTS values are likely to be generated for video streams that incorporate AFF.

MTS400 Series MPEG Test Systems Release Notes 15

Release Notes

Support for Generating

Partial Reception Streams

Support for gen

While multiplexing H.264 elementary streams, the Multiplexer puts one access unit per PES packet. Remultiplexing some H.264 PES, which has more than one access unit in one PES packet, will result in a slightly increased bit rate.

The Multiplexer currently expects the PCR to be carried in one of the audio or video PIDs. However, if you need to generate a separate PCR only PID, perform the following steps:

a. While creat

the PCR tab.

b. Uncheck the Carry PCR and enter the PCR PID number.

c. Check that you have the right PCR PID on all audio and video streams.

d. Finish the proc ess of adding the streams and tables.

e. You will get an PCR error message here if you are working with the

wizard (no PCR).

f. On the File Examine TS menu, open the reference stream from which you

want to use the PCR from.

g. Drag the PCR PID from the examine TS to the PID tab of the stream

being cr

erating Partial Reception Streams has some limitations:

ing the new TS, in the add program stream dialogue, go to

eated.

h. Check the PID number and click ok.

Select an appropriate stream type when providing an input ﬁle to the Multiplexer. For example, providing a transport stream as input and selecting PES or ES as the stream type may result in a crash.

When a non-SEI H.264 PES is provided as input, the Multiplexer displays the detect bit rate dialog box. However, the Detect Bitrate button, Scan settings button, and frame rate combo box are all grayed out. You will need to

de a bit rate manually.

provi

Support for H.264 in the Make Seamless feature of the Multiplexer and Seamless Wizard is not available yet.

In ISDB-T (One Segment), ISDB-TB (One Segment) interpretations, NIT/ TOT/ TDT setup screens are not available. However, you can a dd these tables through the table and section views.

The Multiplexer allows you to create multiple sections of a TDT/ TOT table, but when the muxed ﬁle is opened in Mux again, these multiple sections are

t seen. However, these are present in the stream, evident when the stream

no is analyzed with the TSCA.

When two TDT sections are added to a stream and both are given two different start and stop times, the generated stream will have identical sections.

16 MTS400 Series MPEG Test Systems Release Notes

Release Notes

MTS400P Issue

On the ﬁrst use of the Pseudo real-time playout, the path for the MPEG Player application needs to be changed to:

C:\Program Files\Tektronix\mp eg\MTS400\Apps\TSCA\bin\ MpegPlayer.exe

The path can be changed using the Player Settings dialog under the Multiplex Menu.

Carousel Analyzer Issues

The following issue affects the MTS415, MTS430, MTS4SA, and MTS400P. The issues wi Carousel Analyzer is installed.

Spikes on Bite Rate Graphs

for Lon

g Streams

The Carousel Analyzer bit rate graphs for long streams may show spikes.

Security Patches

ll also be relevant for the MTX100B, RTX100B, RTX130B where the

Microsoft Windows

ofessional

XP Pr

(Service Pac k 3)

The MT the following Microsoft Security Patches:

Patch KB923789

End of document

S415, MTS430, MTS4SA, and MTS400P software has been veriﬁed with

MTS400 Series MPEG Test Systems Release Notes 17

Tektronix MTS400 Series User manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Release Notes

Related User Documentation

Enhancements - Software Version 1.8

Restoring the MTS415 and MTS430

MPEG Player Issues

Transport Stream Compliance Analyzer GbE Option Issues

ES Analyzer Issues

Buffer Analyzer Issues

Multiplexer Issues

Carousel Analyzer Issues

Security Patches