DekTec DTC-378 User Manual

DTC-378 T2Xpres

T2Xpress

DVB-T2 Signal Generator

DTC-378 T2Xpress

Table of Contents

1. Introduction ................................................................................................................................... 5

2. Minimum PC Requirements .............................................................................................................. 5

3. T2Xpress Software Options .............................................................................................................. 5

4. T2Xpress Software Installation .......................................................................................................... 5

5. T2Xpress Overview ......................................................................................................................... 6

5.1. Launching T2Xpress ........................................................................................................................... 6

5.2. T2Xpress Application Layout ............................................................................................................... 6

5.3. Multiple Component Signal Generation .............................................................................................. 7

6. Walkthrough: Creating a DVB-T2 T2-MI File ...................................................................................... 8

7. T2Xpress Application GUI ................................................................................................................ 9

7.1. Menu Bar ........................................................................................................................................... 9

7.2. Tool Bar............................................................................................................................................. 9

7.3. General DVB-T2 Parameters ............................................................................................................ 10

7.4. T2-Frame Parameters....................................................................................................................... 11

7.5. Test Points ........................................................................................................................................ 12

7.6. FEF Parameters ................................................................................................................................ 12

7.7. AUX Parameters ............................................................................................................................... 13

7.8. Frequencies ..................................................................................................................................... 13

7.9. Output settings................................................................................................................................. 14

7.9.1. I/Q Output Settings .................................................................................................................. 14

7.9.2. T2-MI File Output settings ........................................................................................................ 15

7.9.3. T2-MI over ASI Output settings ................................................................................................. 16

7.9.4. T2-MI over IP Output settings ................................................................................................... 17

7.9.5. RF Output settings .................................................................................................................... 18

7.10. PLP Parameters .............................................................................................................................. 19

7.10.1. PLP Source Selection .............................................................................................................. 20

7.11. PAPR Reduction Parameters ............................................................................................................ 23

7.11.1. PAPR ACE .............................................................................................................................. 23

7.11.2. PAPR TR ................................................................................................................................. 23

7.11.3. L1 PAPR ................................................................................................................................. 23

7.12. TX Signature .................................................................................................................................. 24

7.12.1. TX Signature in Auxiliary Streams ............................................................................................ 24

7.12.2. TX Signature in the FEF part ................................................................................................... 24

7.13. Channel Fading ............................................................................................................................. 25

7.13.1. Channel Simulator ................................................................................................................. 25

7.13.2. AWGN .................................................................................................................................. 25

7.13.3. Multiple Transmission Paths Simulation ................................................................................... 26

7.14. Messages....................................................................................................................................... 27

7.15. Status Bar ...................................................................................................................................... 27

DTC-378 T2Xpress

Revision

Date

Changes

V2.5.1.52

2015.02.23

Improved T2-MI time-stamping to reduce buffering Set the O.151 PRBS generator’s initial state according the V&V reference

streams

V2.5.0.51

2014.07.18

Added support for real-time changing channel fading (SNR and paths) Added support for real-time changing RF-level Fixed T2-MI generation when IL_TYPE=1 Improved error reporting

V2.4.0.50

2014.04.24

Added DTA-2115 support

V2.3.7.49

2013.09.25

Fixed number of leap seconds

V2.3.6.48

2013.03.29

Fixed performance issues Fixed crash after stopping generation Ignores In-band B-flag for T2 version 1.1.1 Improved error reporting

V2.3.2.44

2013.02.21

Added warning when type 1 PLPs are used and number of sub-slices!=1 Fixed T2MI FEF sub-part encoding

V2.3.1.43

2012.06.11

Fixed IQ and T2MI output to file Fixed T2MI output when license is stored on a dongle

V2.3.0.42

2012.05.15

Based on new DTAPI and driver

V2.2.2.40

2011.12.09

Added display of design delay values when Auto is selected Added append-file option for IQ-output Added L1 change counter for IQ-output. Maximum one L1 post FEC block for T2 Lite Updated 'Tdecode' RBM parameter for T2 Lite Allowed bias balancing with V1.3.1 Fixed multi PLP output for T2 Lite profile Fixed T2MI multi profile output Fixed in band signaling type A when P_I > 1 Fixed T2MI output with frame interval > 1 Fixed RBM crash

V2.1.0.37

2011.08.30

Added support for DVB-T2 version 1.3.1 including the T2 Lite profile Added support for multiple component signal generation Added continuity count correction and PCR adaption after TS-file looping Added display of total play out time

V1.10.6.33

2011.04.28

Improved DTU-215 support

V1.10.5.32

2011.02.15

Adapted TS-file input for stream generation according to DVB-T2 V&V Working

Group model Fixed noise generation for MISO TX1+TX2 Fixed SDT-Other generation in common PLP Removed .NET 2.0 SP2 dependency

V1.10.2.28

2011.01.17

Fixed RF-frequency and RF-level

V1.10.1.27

2011.01.10

Fixed 1.7MHz bandwidth

V1.9.3.25

2010.07.08

Added support for PLP stream generation according to DVB-T2 V&V Working

Group model. Added Receiver Buffer Model validation option Added option to add dummy AUX streams

Revision History

DTC-378 T2Xpress

Fixed Pilot Pattern #8 Fixed continuity count errors in SDT-table Fixed ISCR generation Fixed SYNCD computation Fixed Compensation Delay computation

V1.7.0.17

2010.04.08

Added Transmitter Signature parameters Two independent channel simulation paths for MISO Added Message tab page Added options for PAT, PMT and PCR insertion in T2-MI Reduced de-jitter buffer size requirements when IL-Type 1 is used Fixed PRBS for bias balancing cells Scheduler fixes Fixed TTO rounding in in-band type B signalling

V1.6.0.15

2010.02.26

Added DVB-T2 Version 1.2.1 support Improved PAPR TR algorithm Improved L1 ACE algorithm FEF signal selection fixed

V1.5.0.14

2010.01.25

Name changed into T2Xpress Design delay computation updated Rare L1 BCH error fixed Parameters for PAPR testing added Vclip in PAPR specified in Volt

V1.4.0.12

2009.12.03

Design Delay parameter added “Big-TS” Splitting hanging fixed T2-MI generated file size fixed At least 3 BB-frames with ISSY per IL-frame are created.

V1.3.0.8

2009.10.28

ACE and TR PAPR reduction added T2-MI improvements T2-MI DVB-T2 timestamp support added T2-MI over IP output format added

V1.1.0.6

2009.09.04

“Big-TS” Splitting added T2-MI output format added DVB-T2 RF output format added T2MI over ASI output format added TTO error related to DTG164 fixed L1_POST_INFO_SIZE field of the L1 current packet in T2MI fixed

V1.0.0.4

2009.07.09

First released version

DTC-378 T2Xpress

Platform

Windows XP/2003/Vista with .NET v2.0

Processor*

P4@2.0GHz (off-line generation) Core 2, Core i7 (real-time output)

RAM

1 GB

Option

Description

DTC-378-T2

T2Xpress: Enables DVB-T2 T2-MI generation and DVB-T2 RF output StreamXpress: Enables single-PLP (from TS) and T2-MI playout

DTC-371-IQ

Option to enable DVB-T2 I/Q sample generation, Test Point data generation, and playout of I/Q samples through the StreamXpress

DTC-305-CM

Option to enable channel modelling

1. Introduction

The DTC-378 T2Xpress software package is designed to create DVB-T2 test signals in the form of I/Q sample files, T2-MI files, DVB-T2 RF output and T2-MI over ASI output. T2Xpress can be installed by the user on any qualifying PC, as specified in section 2.

T2Xpress allows you to set the DVB-T2 parameters, specify the T2-frame structure, PLP parameters and select the PLP sources, add noise, add multiple channel simulation paths and generate the DVBT2 test signals. Generation of DVB-T2 signals using the T2-base, T2-lite profile and a combination of both profiles are supported.

The I/Q sample file and T2-MI file can be processed by your application or it can be played out through the StreamXpress.

Note: The T2Xpress functions depend on the installed options, as specified in section 3.

2. Minimum PC Requirements

* Or equivalent AMD processor

3. T2Xpress Software Options

The T2Xpress software requires a valid license to be installed. Without a valid DTC-378-T2 license installed, T2Xpress will operate in demo mode and is to not enable to generate DVB-T2 signals.

The following options are available:

4. T2Xpress Software Installation

The T2Xpress software installation and T2Xpress license installation instructions can be found in the ‘DTC-378 T2Xpress Installation’ document, which is included in the install package.

DTC-378 T2Xpress

6 3 5

5. T2Xpress Overview

5.1. Launching T2Xpress

The T2Xpress program can be started simply from the Start Menu:

Start > All Programs > DekTec > T2Xpress

A dialog appears that allows you to specify all parameters, to save and load parameter sets from file, and to start generation of the DVB-T2 signal.

5.2. T2Xpress Application Layout

1. Menu Bar The top area of the T2Xpress application contains two menus: File and Help.

2. Tool Bar This area contains the following commands: New File, Open File, Save File, Close File, Clear, Generate output and Cancel. This area also displays the name of the T2Xpress -settings file.

3. General DVB-T2 Parameters This area allows you to set the general DVB-T2 parameters.

4. Frame Parameters This area allows you to specify the T2-frame structure. If the DVB-T2 parameter set is valid, it also displays the derived parameters.

5. Test Points This area allows you to specify the output of test point data files according to the document: “Generating DVB-T2 Reference Streams”.

DTC-378 T2Xpress

6. FEF Parameters This area allows you to insert and specify the Future Extension Frame settings.

7. AUX Streams Parameters This area allows you to insert additional dummy auxiliary streams.

8. Frequencies This area allows you to set the carrier frequency. In case of Time-Frequency Slicing (TFS) you can set multiple frequencies.

9. Output Settings This area allows you to specify the name, location, size and the format for the generated signals.

10. PLP Parameters This area allows you to specify the parameters for each PLP and to select the Transport Stream source for each PLP.

11. PAPR Parameters This area allows you to specify the Peak-to-Average-Power-Ratio (PAPR) reduction parameters.

12. TX Signature This area allows you to specify the transmitter signature in the FEF part and AUX streams.

13. Channel Fading This area allows you to add noise to the output signal and to specify multiple simulated fading paths. For each path you can specify the channel-simulation parameters.

14. Messages In this area interesting events are shown.

15. Status Bar The status bar shows the validity of the DVB-T2 parameter set.

5.3. Multiple Component Signal Generation

T2Xpress allows the generation of a DVB-T2 signal containing two components, one component using the T2-base profile and another component using the T2-lite profile. Checking the Multiple Component check box enables this option. In case this option is enabled, the T2Xpress user interface allows you to specify for each component:

- General DVB-T2 parameters

- Frame parameters

- Test Points parameters

- FEF parameters,

- AUX Stream parameters

- PLP parameters

- PAPR parameters

- TX Signature parameters

Note that the components have to use the same bandwidth. Multiple component T2-MI output is not yet supported.

DTC-378 T2Xpress

6. Walkthrough: Creating a DVB-T2 T2-MI File

This walkthrough will guide you through creating a DVB-T2 T2-MI file.

- Start T2Xpress application T2Xpress can be started from the start menu or using the desktop shortcut. After start-up all DVB-T2 parameters are set to default values.

- Set general DVB-T2 parameters

- Set T2-Frame parameters Only the fields with light-blue background can be set. The other fields are derived from the DVB-T2 parameters and are displayed if the parameter set is valid.

- Set Future Extension Frames (FEF) parameters (optional)

- Set Frequencies Set the carrier frequency of the DVB-T2 RF channel. In case TFS is used, multiple frequencies have to be set.

- Set PLP Parameters Modify the PLP parameters and optionally add more PLPs. To add more PLPs, right-click the mouse in the PLP parameter area and select: Insert PLP. Alternatively, the Insert key can be used. To remove a PLP, select the PLP then right-click the mouse and select: Remove PLP. The shortcut key in this case is Delete. To navigate through the PLP parameters, use the arrow keys. After selection you can press the Enter key to modify the parameter. When done, press the Enter key for further navigation. To modify the PLP’s source, double click on the PLP’s source parameter and select a TransportStream file or the O151 PRBS test signal.

- Check Status Bar The status bar should indicate: Parameter set is valid. If otherwise, correct the settings.

- Set Output File Specify the name, location, size and format of the generated T2-MI file.

- Save T2Xpress-Settings Optionally save the current T2Xpress settings to file by pressing the save button in the toolbar, or selecting Save File in the menu bar.

- Generate T2-MI File

The generation of the output file can be started by pressing the Generate output button in the toolbar, or selecting Generate output in the menu bar. After starting, the progress bar shows the percentage of work done. After completion, the result of the generation is displayed.

- Play-out of T2-MI File The generated T2-MI file can be processed by your application directly or it can be played out through the StreamXpress with a DTA-115 PCI modulator or DTU-215 USB modulator. To use the StreamXpress for play-out: Start the StreamXpress application, select an appropriate modulator card, select modulation type T2MI and select the file to be played-out.

DTC-378 T2Xpress

Submenu

Description

New

Create a new T2Xpress-settings file; Settings are set to default

Open …

Open an existing T2Xpress-settings file

Save

Save the current T2Xpress-settings to file

Save As …

Save the current T2Xpress-settings to file using a different file name

Close the current file

Clear

Clear the current settings. All settings are set to default

Generate output

Start the generation of the DVB-T2 signal

Cancel generation

Cancel the generation of the DVB-T2 signal

Submenu item

Description

License Manager

Open the License Manager dialog providing information about the installed licenses and enabling the installation of new licenses

About

Provide information about the current T2Xpress version

Toolbar button

Description

Create a new T2Xpress-settings file; Settings are set to default

Open an existing T2Xpress-settings file

Save the current T2Xpress-settings to file

Close the current file

Clear the current settings; All settings are set to default

Start the generation of the DVB-T2 signal

Cancel the generation of the DVB-T2 signal

7. T2Xpress Application GUI

The following sections describe the parameter groups and areas in the GUI of the T2Xpress application.

7.1. Menu Bar

The menu bar contains two menus:

- File Menu

- Help Menu

7.2. Tool Bar

- Toolbar buttons

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