Page 1 Technical Reference MTM400A MPEG Transport Stream Monitor 071-2495-00 This document applies to firmware version 3.0 and above. 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.
Page 2 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.
Page 3 ..........2- - 54 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 4 ........4- - 10 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 5 ......... . . 5- - 16 Index MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 6: Table Of Contents
....2- -38 Figure 2- -24: Packets view - - ISDB- -T, IIP detail example ..2- -39 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 7 ....... . . 4- -13 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 8 ..... . . 5- -12 Figure 5- -10: Cable connections for GigE interface card ..5- -13 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 9 ....... . 5- -6 Table 5- -3: GigE interface card connectors ....5- -7 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 10 Table of Contents viii MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 11 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 installation instructions for details on installing the product so it has proper ventilation. MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 12 H WARNING indicates an injury hazard not immediately accessible as you read the marking. H CAUTION indicates a hazard to property including the product. The following symbol(s) may appear on the product: Protective Ground CAUTION Refer to Manual (Earth) Terminal MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 13 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. Use only Tektronix approved components when servicing the unit. MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 14 Service Safety Summary MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 15: Table I: Product Documentation
This manual describes the MTM400A MPEG Transport Stream Monitor, which provides a complete solution for transmission monitoring of MPEG transport streams over RF, IP, and ASI interfaces. The MTM400A monitor uses a single transport stream processor platform packaged in a 1 RU rackmount chassis to provide monitoring of a transport stream at data rates up to 155 Mbps.
Page 16 Provides instructions for upgrading the (075-0972-xx) product firmware Hardware Upgrade Instructions Provides instructions for installing the (075-0973-xx) optional hardware interface cards Key: Printed document MTM400A product documentation CD - PDF format Tektronix Web site - PDF format MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 17 RUI Overview...
Page 19 The user interface is accessed through a Remote User Interface (RUI). The RUI allows the status of the MTM400A monitor to be determined from anywhere in the world and provides remote control of the measurements and configuration to the administrator.
Page 20: Figure 1- 1: Rui Components
Figure 1- 1: RUI components Title Bar The title bar shows the stream name (defined in the Stream Configuration view), the IP address of the connected MTM400A monitor, and the product title (MTM400A Transport Stream Monitor). 1- 2 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 21: Table 1- 1: Menu Options
Opens the Configuration dialog box. Interface... Alt + I Opens the Interface Configuration dialog box. Standard... Alt + T Opens the DTV Standards Selection dialog box. Help About... Displays application and system information. 1- 3 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 22: Figure 1- 2: Toolbar Controls
Move to the previous/next view in the viewing history. Connect Opens the Connect to MTM Device dialog box that you can use to reconnect to the current MTM400A monitor or to connect to a different MTM400A monitor (see the MTM400A Quick Start User Manual). Interface Opens the Interface dialog box (see page 3- - 35).
Page 23: Figure 1- 3: Button Bar
H Monitoring buttons. All of the buttons associated with monitoring are grouped under the Monitoring primary button. You can hide or show the monitoring buttons by clicking on the Y or B symbols. Figure 1- 3: Button bar 1- 5 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 24: Figure 1- 4: Customize Button Bar Dialog Box
Move Up and Move Down buttons. You can customize the display to show or hide the button bar depending on your monitoring needs (see page 1- -7). mtm4a_bbar_customize.tif Figure 1- 4: Customize Button Bar dialog box 1- 6 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 25: Programs View 2
H Detail view(s). The detail views vary depending on which node is high- lighted in the tree view. Detail views include summary views, error logs, and thumbnail views. 1- 7 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 26: Figure 1- 5: Panel Slide Controls
The RUI window size and panel boundaries can be dragged in the conventional Windows manner to resize them. Figure 1- 5: Panel slide controls 1- 8 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 27: Figure 1- 6: Tear-Off View
Figure 1- 6: Tear-off view Status Bar Table 1- -3 describes the Status bar messages shown in Figure 1- -7. Figure 1- 7: Status bar 1- 9 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 28: Table 1- 3: Status Bar Controls
Button function Description Connectivity Shows the status of the network connection with the MTM400A monitor. If the network connection has failed, a red cross is superimposed on the icon. Login Shows the user name currently logged in: Administrator or User (see page 3- - 24).
Page 29: Figure 1- 8: Breadcrumb Trail
RUI Overview Context Menus Context menus (or right-click menus) are available throughout the MTM400A monitor RUI. The menu options are context sensitive. For a full listing of context menu options, refer to Context Menus on page 4- -17. Tooltips Extensive tooltips are available. Hover the pointer over the button or item with which you need help.
Page 30: Figure 1- 10: Flexvut Select Icon
FlexVut window. When you click the icon, you can then select the FlexVut panel in which the view will be displayed. Figure 1- 10: FlexVut select icon 1- 12 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 31 Analysis Views...
Page 33 From the Analysis view window, you can access the following views: H Programs H Tests H SI/PSI (Tables) H PID H Packets H Interface These views are described on the following pages. 2- 1 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 34 Analysis Views 2- 2 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 35: Figure 2- 1: Analysis - Programs View
(PIDs). The transport stream carries a number of programs and each program carries a number of elementary streams. Elementary streams are carried in packets that are identified by packets identifiers (PIDs). 2- 3 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 36: Table 2- 1: Programs View Nodes
LED in the current view. Only the lowest level nodes will be considered and highlighted in the search because the parent nodes simply reflect the state of the lowest level nodes. 2- 4 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 37 Error Log The Event Log displays the log entries for the whole transport stream. A more detailed description of event log management can be found starting on page 4- -1. 2- 5 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 38: Figure 2- 2: Thumbnail Display
PID. The Brief Details and Full Summary views provide progressively more detailed information about each video channel. Selecting the thumbnail viewing size from the context menu affects all thumbnails. Figure 2- 2: Thumbnail display 2- 6 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 39 Among the items that can be checked using a template are the following: H Transport stream identifier H Services - presence, name H PIDs in services H PID types and scrambling state H Service regional ratings 2- 7 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 40: Figure 2- 3: Template View
In Figure 2- -3, the presence of service 8258 in the transport stream is being checked. In addition, details of the service and associated PIDs are checked. Figure 2- 3: Template view 2- 8 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 41 <OtherPIDsAllowed>0</OtherPIDsAllowed> <PIDList Update=”Absolute”> <PID Number=”520”>  <Constraint>0</Constraint> <StreamType>2</StreamType> <CADescriptorPresent>false</CADescriptorPresent> <IsScrambled>false</IsScrambled> </PID> 2- 9 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 42  <Constraint>0</Constraint> <StreamType>11</StreamType> <CADescriptorPresent>false</CADescriptorPresent> <IsScrambled>false</IsScrambled> </PID> </PIDList> </Service> </ServiceList> </PS56> </Stream> </Streams> </MTM400Configuration> 2- 10 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 43 XML files can be edited with an XML editor or a text editor (for example, Microsoft Notepad). The MTM400A will automatically generate a template for you based on the stream being monitored. You can Create and Apply a template immediately or you can Create and Download a template for further modification or examina- tion.
Page 44: Figure 2- 4: Service Logging - Data Storage
When a service log is being monitored from multiple locations, only one location should be selected to consume entries. This will allow all locations adequate time to view or log the entries. 2- 12 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 45: Figure 2- 5: Stream View - Summary
RUI consuming the data. Where the data is logged to disk, the logging RUI must be the consuming RUI. Log Entries. Select this checkbox if entries are to be logged to a file. 2- 13 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 46 </ServiceLog> </Stream> </Streams> </MTM400Configuration> This configuration can be embedded in a full configuration file, or just uploaded as an incremental change (refer to Configuration File Structure in the MTM400A Programmer Manual). 2- 14 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 47: Figure 2- 6: Program Node
PID related information is available under the Summary view. The Thumnails view displays details of the streams and thumbnails for each of the programs (where available). The Program Tests view shows tests related to the program. 2- 15 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 48: Figure 2- 7: Elementary Stream Node
Figure 2- 7: Elementary stream node An LED associated with each elementary stream node indicates the status of the tests relating to the elementary stream. 2- 16 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 49: Figure 2- 8: Pcr Graphs View
Similarly, the Event Log shows the errors for the highlighted test. When no tests are selected, the event log will show the events related to all tests associated with the elementary stream selected in the program tree. 2- 17 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 50: Table 2- 2: Timing Measurement Graphs
PCR on the Y-axis. Expected PCR values are calculated from the byte index of the PCR. The Maximum PCR Accuracy Error limit can be adjusted by modifying the Max PCR accuracy error. 2- 18 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 51 The Maximum PCR Frequency Offset limit can be adjusted by modifying the “Max PCR frequency offset” parameter. PTS Arrival Interval Presentation Time Stamps (PTS) graph provides a display of the time interval between successive PTSs. 2- 19 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 52 Programs View 2- 20 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 53: Figure 2- 9: Tests View
The view displays a test tree that represents all the tests that have been applied to the analyzed transport stream. Figure 2- -10 shows the nodes available in the navigation view. 2- 21 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 54: Figure 2- 10: Test View Nodes
SI/PSI is reported in the stream log but is not subject to a standard test. The only place that these stream events are recorded is in the stream logs. This screen 2- 22 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 55: Figure 2- 11: Test Filtering Buttons
White Green Figure 2- 11: Test filtering buttons Each button, when selected, will hide a category of tests in the display. This feature will act only on the individual test nodes. 2- 23 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 56: Figure 2- 12: Test Failures View
Additionally, tests that were not in a list in the previous update are shown shaded at the top of that list. This enables any new test failure activity to be seen quickly. 2- 24 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 57: Figure 2- 13: Tests View - Test Nodes
When you select a test node, the Associated PIDs pane displays a summary of all of the PIDs and an event log listing all events that are associated with the test. Figure 2- 13: Tests view - test nodes 2- 25 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 58: Figure 2- 14: Test View - Pid Nodes
Where tests have failed, the PIDs affected are listed under the test node in the Tests navigation view. Selecting a PID will display the Event Log for that PID. Figure 2- 14: Test view - PID nodes 2- 26 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 59: Si/Psi (Tables) View 2
Some of the nodes that represent less common tables or table groups may not have specific summary views available in the analyzer. In these cases, a generic summary view is used. 2- 27 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 60: Table Summary Pane 2
A specific departure from the Table Summary view is the EPG view that is displayed when a section of the EPG table is highlighted. For a description of the general presentation of the EPG view, see page 2- -31. 2- 28 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 61: Section View 2
When a node is selected in the table pane, the bytes that make up the selected node (including the subordinate nodes) are highlighted in the hexadecimal data pane (see Figure 2- -18). 2- 29 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 62: Figure 2- 18: Section Payload
If the section is corrupt or empty, the hexadecimal view background is red instead of blue. The view is continually updated. Updating can be paused, to allow you to examine specific details. Pause table section updating Resume table section updating 2- 30 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 63: Si Repetition Graphs View 2
Nodes representing an individual table or subtable will offer the usual Summary, Section, and SI Repetition graph detail views. However, the higher nodes will display the programming information graphically as shown in Figure 2- -19. 2- 31 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 64 The initial date and time will be dictated by the information found in the stream. This information is updated regularly. 2- 32 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 65 H Green: Following event H Blue: Schedule event H Yellow: (ISDB only) After event Event Detail Panel. Shows details of the selected event. The details are contained in the EIT (event information table). 2- 33 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 66: Figure 2- 20: Epg Nodes
SDT (Service Description Table) Nodes. Links to services identified in the SI for a specific transport stream. Service Summary Nodes. Graphical view of the events identified in the service. EIT Nodes. Detailed view of event information for a single EIT subtable. 2- 34 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 67: Figure 2- 21: Pids View
Figure 2- 21: PIDs view All PIDs Node In the navigation view, PIDs are grouped under the following subordinate nodes: H Reserved PIDs H Referenced PIDs H Unreferenced PIDs H SI/PSI PIDs H User PIDs 2- 35 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 68: Detail View (All Pids And Pid Group) 2
The associated test states are shown in all views. In the pie chart view, double-clicking in the pie chart area toggles the segment labels. When no labels are displayed, click and hold a segment to display a single label. 2- 36 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 69: Figure 2- 22: All Pids Summary View (Tear-Off View)
Associated Tests view. This view lists the tests associated with the selected PID. The status of the individual tests is indicated with LED icons. Also available are Timing Graphs, which show the bit rate of the selected PID in graphical form. 2- 37 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 70: Figure 2- 23: Pid Detail View - Timing Graphs
A Presentation Time Stamp (PTS) graph may also be available on PIDs carrying audio and video information. (See also Graph Management on page 4- -11 and Timing Graphs on page 2- -18.) 2- 38 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 71: Figure 2- 24: Packets View - Isdb- T, Iip Detail Example
(IIPs) and TMCC data in ISDB-T mode. Figure 2- -24 shows an example of the IIP view in an ISDB-T transport stream. Figure 2- 24: Packets view - ISDB- T, IIP detail example 2- 39 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 72 Packets View 2- 40 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 73: Interface View 2
Interface View If one of the optional interface cards is installed in the MTM400A monitor, the Interface tab and button are displayed (see Figure 2- -25). NOTE. Refer to Interface Card Configuration starting on page 3- -35 for informa- tion about configuring the optional interface cards.
Page 74: Gige Interface 2
IF Warnings Collection (see Figure 2- -26). The secondary nodes are specific to the GigE interface. The detail views are contained under three tabs: Graphs (and Readings), Interface Event Log, and All Session Event Log. Figure 2- 26: Interface view - GigE 2- 42 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 75 (see Table 2- -4 on page 2- -47). All Session PIT Error (LED). Indicates the worst case PIT Error from all sessions present on the link (see Table 2- -4, page 2- -47). 2- 43 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 76 This field is not applicable (gray) if the protocol is set to UDP. IP Errored Rate. (Packets/minute) The calculation is maintained per session on the interface card. The field displays a red background if the rate is greater than zero. 2- 44 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 77 Datagram Size. (Bytes) Datagram size of the transport stream IP packets. VLAN Tag. (Virtual Local Area Network tag) VLAN tag displayed in hex format. This is a two byte value containing priority bit, canonical format indicator (CFI), and VLAN ID (VID). 2- 45 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 78 Currently selected traffic will also be highlighted in this table. You cannot select network streams that do not carry a transport stream. The individual columns are described in Table 2- -4. 2- 46 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 79: Table 2- 4: Gige Traffic View Column Descriptions
MPEG CC (continuity count) error count in each session since reset or startup. Pkt Error Total count of IP corrupted, lost packets, and out of order packets in each session since reset or startup. 2- 47 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 80 GigE Trend Graphs The following trend graphs are available: Signal Lock, Corrupt Packet Rate, Dropped Packet Rate, Packet Inter-Arrival Time (Peak and Average), and Out-of-Order Packet Rate. 2- 48 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 81 H An SFP (Small Format Pluggable) module is used to facilitate the Ethernet Optical interconnection feature. The GigE interface card has been tested with SFP module(s) ordered from Tektronix. SFP modules purchased from a supplier other than Tektronix are not warranted to work.
Page 82 Overall SNR (all continuous pilots). A time line graph of measured Signal to Noise Ratio is displayed, over the preceding 255 seconds. Overall SNR (all continuous pilots). A time line graph of measured Modulation Error Ratio is displayed, over the preceding 255 seconds. 2- 50 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 83 The Persistence setting in the graph context menu sets the time in seconds that the dots persist on the graph. 2- 51 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 84: Qpsk (L-Band) Interface 2
QAM (Annex A and Annex C) Interface Readings See QPSK (L-band) Interface Readings, page 2- -52. Graphs See QPSK (L-band) Interface Graphs, page 2- -52. 2- 52 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 85: Qam (Annex B Ii) Interface 2
If there are echoes or other time related distortions on the signal, the Equalizer display will display the amplitude of the corresponding tap correction values versus time. MER. This graph gives a time record of MER over the last 255 seconds. 2- 53 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 86 Equalizer. The equalizer coefficients are plotted across the graph display. The display illustrates the presence of multi-path echoes by indicating how the equalizer is adjusting to cancel them out. NOTE. The Equalizer graph amplitude values are approximate. 2- 54 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 87 Configuration...
Page 89: Stream Configuration 3
Stream Configuration Configuration of the MTM400A monitor and the RUI are collected together in the Configuration dialog box, which can be accessed using the Configuration button on the toolbar (see Figure 3- -1). The left panel contains a tree view of the available configuration items under the primary nodes: Stream, Device, and Preferences.
Page 90: Stream Global Settings 3
Miscellaneous Settings Enable Thumbnails. Enables thumbnail generation for viewing in the RUI. Thumbnail support must be installed on the RUI client PC if the MTM400A RUI is to be used to view thumbnails. Instructions for installing the thumbnail support are included in the MTM400A Quick Start User Manual (Tektronix part number 071-2492-xx).
Page 91 If there is no change in the SI identity and/or versions to inform the MTM400A monitor that it is a new stream, you can reset the stream manually here.
Page 92: Recording Settings 3
TTL input, or by an alarm. The recording is held in RAM and can be downloaded from the MTM400A monitor to the client PC for storage and further analysis. The file is stored as a valid MPEG file;...
Page 93 For example, if the available memory will hold a 20 second recording, with 25% pretrigger specified and an event-triggered recording starting five seconds or more into the run, the contents of the recorded file will be as illustrated in Figure 3- -4. 3- 5 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 94 15% of the file would hold pretrigger data. The file contents would be as illustrated in Figure 3- -5. Trigger File time in seconds Figure 3- 5: 15% pretrigger example 3- 6 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 95 External Rising Edge / External Falling Edge. The trigger is set when Arm is selected. Recording will start when a rising / falling edge is detected at the TTL input on the TS Processor alarms connector. See the MTM400A Specifications and Performance Verification Technical Reference for a listing of the product specifications.
Page 96 Trigger Time. Displays the time that the trigger event occurred. You can select the time zone in which trigger times are presented from the drop-down list: H Local. The time local to the PC on which the MTM400A monitor RUI is currently running.
Page 97: Test Parameters 3
Value field, make the change and click Apply. To reset all parameters to their nominal values, click Set All to Nominal. Network traffic will dictate how quickly changes are implemented by the instrument. 3- 9 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 98: Pcr Filters 3
You can access parameters associated with individual tests by selecting Edit Parameters from the context menu of a test. Not all tests have parameters that can be edited. All of the test parameters are described in the MTM400A Test Parameter and Configuration File Technical Reference (Tektronix part number 071-2497-xx), which can be downloaded from the Tektronix Web site (www.tektronix.com).
Page 99 For more information about PCR measurements, read the PCR Measurements Primer, available on the Tektronix Web site (www.tektronix.com). 3- 11 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 100: Table 3- 1: Pcr Settling Times
(RTM devices), especially where scheduling is supported. An additional facility allows weekly schedules to be written for each stream, which instructs the MTM400A to load configuration slots at specific times and days during the week (see Schedule Management on page 3- -16).
Page 101 Stream Configuration Figure 3- 10: Configuration - Slot Management page Figure 3- 11: Configuration file handling 3- 13 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 102 2. In the Save dialog box, locate and select a file name to be overwritten or type in a new name; use the extension .xml. 3. Select Save to download the configuration file from the selected slot. 3- 14 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 103 2. From the list, highlight the slot to be deleted. 3. Select OK. The slot name is deleted from the dialog box and replaced with the slot number. 4. Select Start to upload the configuration setting into the selected slot. 3- 15 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 104: Schedule Management 3
One schedule item must be specified as the baseline (the first item to be loaded). This allows the RTM unit to synchronize, for example, if the instrument is switched on in the middle of a weekly schedule. 3- 16 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 105 NOTE. There should be only a single day listed in the LoadDay entry in the BaseScheduleItem section; there can be multiple days listed in the LoadDays entry in the ScheduleItem section. 3- 17 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 106 Figure 3- 12: Schedule Management configuration page With a prepared schedule file available, you can upload, download, and enable scheduling from the stream Configuration dialog box. 3- 18 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 107 Scheduler checkbox on the Schedule Management page should be cleared and then checked to allow the new schedule to take effect. Downloading a Schedule. A schedule file is downloaded from the MTM400A to either the client PC or to a network location: 1.
Page 108 RTM device at the same instant in time. 3- 20 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 109 Stream Configuration Figure 3- 13: Scheduling and time zones 3- 21 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 110 Stream Configuration 3- 22 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 111: Device Global Settings 3
Select Device in the tree view to access the Device configuration global settings. Product Name The product name is identified as MTM400A. Device Name The device name identifies the MTM400A monitor. The name is used in the Device button. 3- 23 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 112: Passwords Settings 3
You can also reset alarms. The Passwords configuration page (see Figure 3- -15) can be accessed using Configuration (toolbar) > Device > Passwords. Figure 3- 15: Passwords configuration page 3- 24 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 113: Network Settings 3
Device Configuration Use the following procedure to change passwords: NOTE. You must log in to the MTM400A monitor as an administrator; only users with administrator access can change the passwords. The Administrator and User passwords must both be specified when either is changed.
Page 114 If necessary, obtain the IP Address, Gateway and Subnet Mask values from the Network Administrator. NOTE. If the Network Settings are changed and the MTM400A monitor is restarted, the PC that is running the RUI will be unable to communicate with the instrument, since the browser is trying to communicate with the previous network identity.
Page 115: Time Settings 3
(see Schedule Management on page 3- -16). Figure 3- -17 shows a typical setup in which an MTM400A monitor is located in Denver, CO and is monitored from Portland, OR. In local time, Portland is one hour behind Denver.
Page 116 The Time Settings configuration page (see Figure 3- -18) can be accessed using Configuration (toolbar) > Device > Time Settings. Figure 3- 18: Time Settings configuration page Three time sources are available to the MTM400A monitor from the Time Source drop-down menu: H Real Time Clock. The MTM400A monitor internal clock.
Page 117 SNTP server entered in the SNTP Server field. The network Gateway and Subnet Mask must be set up for the remote server to be able to communicate. See Network Settings on page 3- -25. 3- 29 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 118 Device Configuration 3- 30 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 119: Preferences Configuration 3
Fonts. The page can be accessed by selecting the relevant node in the tree view. The Preferences configuration page (see Figure 3- -19) can be accessed using Configuration (toolbar) > Preferences. Figure 3- 19: Preferences configuration page 3- 31 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 120: Preferences Global Settings 3
H Instrument. This color scheme is based around a dark background. Font Settings How the MTM400A monitor displays entries in the Event Log is dictated by the Log Entry setting in the Font configuration page along with the language and fonts used by a local computer.
Page 121 The MTM400A monitor RUI is capable of displaying these private character extensions, but the operating system must be correctly configured. The instruc- tions for installing custom font extensions are located in the MTM400A Quick Start User Manual (Tektronix part number 071-2402-xx).
Page 122 Preferences Configuration 3- 34 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 123: Interface Card Configuration 3
Interface Card Configuration This section describes how to configure the optional interface cards that can be installed in the MTM400A monitor. Only one interface card can be installed at a time. The following interface cards are available: H Gigabit Ethernet (GigE)
Page 124: Configuring An Interface Card 3
(bolded) configuration and allocate a name beginning with the word “Preset”. 4. If required, modify the allocated name in the Preset Name Value field of the Selected Preset area. 3- 36 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 125 4. Click Apply to activate the highlighted preset. If you click OK, the highlighted preset will be activated and the dialog box will close. 5. Click OK to close the dialog box. 3- 37 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 126: Gige Interface Settings 3
In this mode, the receive laser needs to be connected into a valid optical link between two other devices using an optical splitter. This enables the GigE card to monitor the communication between other devices. 3- 38 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 127 When you have selected Multi Session and entered a new IP address, the address is added to the session list and the session is joined. The list of multi session addresses is restored after the MTM400A monitor is restarted. Also, you must allow five seconds between each IP address entry, to allow the software to record the last entry.
Page 128 IP stream that fits the Source and/or Destina- tion settings. H Source. Input source port address to filter. H Destination. Input destination port address to filter. Input port number in integers between 0 and 65535. 3- 40 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 129: Cofdm Interface Settings 3
0.5 dB. However, for more detailed analysis of COFDM constellations, a much higher ultimate SNR is required, preferably in excess of 40 dB. For this reason, two modes of COFDM operation are provided. 3- 41 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 130 COFDM signal (1704 for 2K, 6816 for 8K modes). 3- 42 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 131 LNB 22kHz Tone. A 22 kHz tone is provided for control of an LNB (Low Noise Block) or similar equipment. The tone, using the drop-down dialog box, is selectable between Off (default) or On. 3- 43 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 132: Qpsk (L-Band) Settings 3
Viterbi Rate. Select the code rate from the drop-down list: 1/2; 2/3; 3/4; 5/6; 6/7; 7/8. It might be overwritten if the Viterbi Rate Auto selection is enabled. Symbol Rate (MS/s). Symbol rate value in mega symbols per second. 3- 44 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 133: Qam (Annex A And C) Settings 3
Two settings are available: Normal and Wide. In Normal mode, the loop bandwidth is approximately 3 kHz, which gives optimum immunity to noise in the channel for most applications. 3- 45 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 134 In some cases, the loop bandwidth might be too narrow to follow the jittered signal, in which case the Wide bandwidth setting should be selected. This increases the loop bandwidth to about 10 kHz, which enables the MTM400A monitor to more easily acquire and track a jittered constellation, but makes the demodulator more susceptible to thermal noise.
Page 135: Qam (Annex B2) Settings 3
Equalization Range. The channel equalizer can be configured to give a long equalization range, at the expense of equalizer resolution, or, in normal mode, optimized for typical cable environments. Normal mode is recommended for general use. 3- 47 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 136 Tuner Phase Noise. Normal and High. This control modifies the carrier loop bandwidth to allow the acquisition of noisy carriers. Normal mode is recom- mended for general use. Signal Detection. NTSC (National Television Standards Committee) and VSB (Vestigial Side Band). 3- 48 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 137 Reference...
Page 139: Event Log
At this point the entry will be lost, the view will return to the most recent entries at the top of the screen, and automatic scrolling will start again. 4- 1 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 140: Pinning The Event Log 4
Export the log by selecting the Export icon or Export Log from the context menu. Select the format in which the log file is to be saved, either xml or csv, and a location for the file. 4- 2 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 141: Color Coding Events 4
The color-coding on a single event type can be removed by selecting Reset Color from the Event Log context menu. Color-coding can be removed from all event types by selecting Reset All Colors from the context menu. 4- 3 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 142 Event Log Figure 4- 2: Event log - Color dialog box 4- 4 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 143: Chart Views And Bit Rates 4
The bit-rate bars are scaled so that all bars are displayed relative to the one with the highest bit rate. Column widths can be adjusted by dragging the line dividing the column headers to the left or right. 4- 5 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 144: Error Status 4
The color of the bit rate bar indicates the bit rate status and whether the rate has exceeded the limits set. 4- 6 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 145: Bit Rate Range Bar 4
Set Bit Rate Limits... from the context menu (see Figure 4- -6) to open the dialog box shown in Figure 4- -7. Figure 4- 6: Set Bit Rate Limits context menu 4- 7 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 146 Transport Stream Occupancy test. This can be found under the Other tab in the Tests view. The Bit Rate Limits of all programs in a stream can be disabled and reset by selecting the Clear Bit Rate Limits (All PIDs) from the context menu. 4- 8 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 147: Pie Charts 4
The maximum and minimum values are not shown. If a segment label is hidden at the edge of the window, click on a segment to display the label in full. 4- 9 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 148: Historical Multiplex Graph 4
You can display trend graphs of the programs in the transport stream using the historical multiplex icon. This graph displays stacked program bit rates over a period that you have selected from the Time period drop-down list. Figure 4- 9: Historical multiplex graph 4- 10 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 149: Graph Management 4
The graphs that can be displayed depend on the selection made in the main application tree view. However, the menus and options for the graphs are similar and are described in the following pages. 4- 11 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 150: Measurement Background 4
Interval and PCR Arrival Interval. Within the category, the X axis is common to the all graphs. A horizontal scroll bar allows you to select an area for inspection when the graph extends beyond the display area. Figure 4- 10: Typical timing graph display 4- 12 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 151: Cursor Data And Control 4
Data for the selected cursor position is displayed in the Data at Cursor panel. Figure 4- 11: Graph cursors 4- 13 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 152: Graph Menu And Toolbar 4
Hide/show settling time Rotate graph layout The graph context menu can be displayed by right-clicking anywhere in a graph display area. The options on the menu are applicable to all graphs. 4- 14 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 153: Adding And Removing Graphs 4
When a graph is zoomed in, its axes will not change as new data is collected. Eventually when the displayed data is overwritten in the MTM, the points will be removed from the graph. 4- 15 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 154: Graph Controls 4
Uses a logarithmic scale for the summary bars. This setting applies to 8VSB interfaces only. Toggles the use of a logarithmic scale for the summary bars shown at the bottom of the 8VSB Symbol Distribution graph. 4- 16 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 155: Table 4- 1: Context Menus
Enable Enables the selected test and all of its subtests Enable All Tests Enables all the tests in the Tests tree Enable Listed Tests Enables only the tests in the list 4- 17 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 156 Resets the PID Group Occupancy Test to green if currently amber Reset Range Bars (all PIDs) Resets the minimum and maximum range indicators (Range Bars) shown on the PID Summary Table (Histogram View) for each PID 4- 18 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 157 Switches to the Tests tab and selects this Test in the Tests tree View this Warning in the Interface tree Switches to the Interface tab and selects the Warning associated with this Test in the Tests tree 4- 19 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 158 Zooms into the graph by 25%. Holding down the Shift key locks the Y axis, holding down the Ctrl key locks the X axis Zoom Out Zooms out of the graph by 25% 4- 20 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 159: Maintenance 5
Maintenance...
Page 161: Preventative Maintenance 5
To rinse, repeat the same process using a cloth dampened with de-ionized water. A swab is useful for cleaning in narrow spaces around the connectors. Do not use abrasive compounds on any part of the unit. 5- 1 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 162: Removing Or Replacing An Interface Card 5
Do not use unnecessary force to disconnect or insert connectors. Accessing the To access the interface card, the MTM400A monitor should be removed from the Components instrument rack, be disconnected from any power and signal sources, and be moved to a suitable static-free working environment.
Page 163 There are three types of interface cards as shown in Figure 5- -2, Figure 5- -3, and Figure 5- -4. Each card type has different cable connections. 5- 3 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 164: Table 5- 1: Qam (Annex A), Qam (Annex B1), Qam (Annex C), And Qpsk (L-Band, Old Version) Card Connectors
Eight wires J7 on Power Distribution card Power Miniature coaxial I/P A on TS Processor card Data and control (serializer) Miniature coaxial O/P A on TS Processor card Data and control (serializer) 5- 4 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 165: And Qpsk (L-Band, Old Version) Interface Card Location 5
Figure 5- 2: QAM (Annex A), QAM (Annex B1), QAM (Annex C), and QPSK (L-Band, old version) interface card location Ribbon Eight-wire cable power cable Interface card Figure 5- 3: QAM (Annex B2), 8PSK/QPSK, 8VSB, and COFDM interface card location 5- 5 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 166: Table 5- 2: Qam (Annex B2), 8Psk/Qpsk, 8Vsb, And Cofdm Interface Card Connectors
Table 5- 2: QAM (Annex B2), 8PSK/QPSK, 8VSB, and COFDM interface card connectors Interface card connection (see Figure 5- 3) Cable type Connects to location Function Eight wires J7 on Power Distribution card Power Ribbon J750 on TS Processor card Data and control 5- 6 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 167: Table 5- 3: Gige Interface Card Connectors
Figure 5- -6. c. For GigE interface cards, remove the six retaining screws from the card and remove the three retaining screws from the rear panel as shown in Figure 5- -7. 5- 7 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 168 QAM (Annex C), and QPSK (L-Band, old version) interface cards Retaining screws (6) Retaining screws (3) Figure 5- 6: Retaining screw locations for QAM (Annex B2), 8PSK/QPSK, 8VSB, and COFDM interface cards 5- 8 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 169 CAUTION. To prevent static damage to the removed card, be sure to store the card in static-free packaging. Failure to properly store the card may result in the card needing repair before it will operate properly when reinstalled. 5- 9 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 170 CAUTION. To prevent damage to the interface card connectors, do not use unnecessary force to connect the cables. All of the connectors are polarized and they will only fit into their respective socket in one way. 5- 10 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 171 J7 on the Power Distribution card. Eight-wire Coaxial power cable cables Interface card Figure 5- 8: Cable connections for QAM (Annex A), QAM (Annex B1), QAM (Annex C), and QPSK (L-Band, old version) interface cards 5- 11 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 172 H Verify that the two coaxial cables on the interface card are firmly attached to their connectors. Eight-wire cable Ribbon cable Coaxial cables Interface card Figure 5- 9: Cable connections for QAM (Annex B2), 8PSK/QPSK, 8VSB, and COFDM interface cards 5- 12 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 173 (see Figure 5- -1 on page 5- -3). Select the Interface 16. The interface card will be detected and initialized when the MTM400A monitor is switched on. Before the Interface card can be used, it must be selected through the user interface and an input must be provided.
Page 174 Maintenance Battery Maintenance The MTM400A monitor uses a pair of Lithium batteries to provide power to the backup circuits when mains power is off. Under normal circumstances, the shelf life of the batteries is in excess of five years. NOTE. The following precautions must be observed when replacing and handling...
Page 175 5. Replace the 21 cover retaining screws and tighten them uniformly. 6. Reconnect the unit and apply power (refer to MTM400A Quick Start User Manual). 7. Reinstate the network identity of the unit (refer to MTM400A Quick Start User Manual).
Page 176 Maintenance Repacking for Shipment If an instrument is to be shipped to a Tektronix field office for repair, attach a tag to the instrument showing the following: H Owner’s name and address H Serial number H Description of the problem(s) encountered and/or service required.
Page 177 Index...
Page 179 L- - band, 3- - 44 Context menus, 4- - 17 QAM (A&C), 3- - 45 QAM (BII), 3- - 47 QPSK, 3- - 44 Interface configuration, 3- - 35 Interface view, 2- - 41 Index- 1 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 180 3- - 9 PCR settling time, 3- - 11 PIDs view, 2- - 35 all PIDs and PID group, 2- - 36 all PIDs node, 2- - 35 PIDs, 2- - 37 Index- 2 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 181 PCR overall jitter, 2- - 18 panel slides, 1- - 8 PTS arrival interval, 2- - 19 tear- - off function, 1- - 9 Toolbar, 1- - 4 Tooltips, 1- - 11 Index- 3 MTM400A MPEG Transport Stream Monitor Technical Reference...
Page 182 Index Index- 4 MTM400A MPEG Transport Stream Monitor Technical Reference...

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