DekTec DTC-379 User Manual

DTC-379 C2Xpres

C2Xpress

DVB-C2 Signal Generator

DTC-379 C2Xpress

Table of Contents

1. Introduction ................................................................................................................................... 4

2. Minimum PC Requirements .............................................................................................................. 4

3. C2Xpress Software Options ............................................................................................................. 4

4. C2Xpress Software Installation ......................................................................................................... 4

5. C2Xpress Overview ........................................................................................................................ 4

5.1. Launching C2Xpress .......................................................................................................................... 4

5.2. C2Xpress Application Layout .............................................................................................................. 5

6. Walkthrough: Generation of a DVB-C2 RF signal ............................................................................... 6

7. C2Xpress Application GUI ............................................................................................................... 6

7.1. Menu Bar ........................................................................................................................................... 7

7.2. Tool Bar............................................................................................................................................. 7

7.3. General DVB-C2 Parameters.............................................................................................................. 8

7.4. C2-Frame Information ....................................................................................................................... 9

7.5. Output settings................................................................................................................................. 10

7.5.1. I/Q Output Settings .................................................................................................................. 10

7.5.2. RF Output settings .................................................................................................................... 11

7.6. Data Slice and PLP Parameters ......................................................................................................... 12

7.6.1. Data Slice Parameters .............................................................................................................. 12

7.6.2. PLP Parameters ........................................................................................................................ 12

7.7. Notch Parameters ............................................................................................................................ 14

7.8. PAPR Reduction Parameters .............................................................................................................. 15

7.8.1. PAPR TR ................................................................................................................................... 15

7.9. Channel Fading ............................................................................................................................... 15

7.9.1. Channel Simulator ................................................................................................................... 15

7.9.2. AWGN .................................................................................................................................... 16

7.9.3. Multiple Transmission Paths Simulation ..................................................................................... 16

7.10. L1 Parameter Updates ................................................................................................................... 17

7.10.1. L1 Update Data Slice Parameters ........................................................................................... 17

7.10.2. L1 Update PLP Parameters ..................................................................................................... 18

7.11. Status Bar ...................................................................................................................................... 18

DTC-379 C2Xpress

Revision

Date

Changes

V1.15.0.50

2015.02.23

Added support for DVB-C2-version and Early Warning signalling

V1.14.0.48

2014.04.24

Added DTA-2115 support

V1.13.0.47

2013.03.29

Added support for 16MHz RF-signal generation with the DTA-2111

V1.12.3.43

2013.02.21

Fixed BUFS and BUFSTAT field in case HEM=false and NDP=true Fixed problem if type 1 and type 2 data slices are mixed Fixed problem if Header Counter=2-Frames and Modulation=16 or 64QAM Fixed order of ISSY fields in the first C2-frame

V1.12.1.41

2012.06.11

Fixed IQ output to file

V1.12.0.40

2012.05.15

Based on new DTAPI and driver

V1.11.3.39

2011.12.09

Added additional error checking

V1.11.2.38

2011.08.17

Added display of total play out time Increased valid range for output delay parameter Added continuity count correction and PCR adaption after TS-file looping Fixed FIFO underflow errors when running C2Xpress for a long period Fixed “Implementation limitation” error

V1.10.0.35

2011.04.21

Added option for generating a part of the spectrum of a C2-System Added support for L1 parameter updates Updated big-TS splitting

V1.9.1.32

2011.03.17

Fixed problem when using L1 TI mode: 4 or 8 symbols

V1.9.0.31

2011.02.17

Added support for DTA-2111 Added OFDM symbol filtering Fixed SDT-Other generation in common PLP Removed .NET 2.0 SP2 dependency

V1.8.0.30

2010.12.21

Added test point data output Fixed 4K-QAM RF-signal problem Fixed (re)start generation without RF-signal

V1.7.0.27

2010.12.03

Improved MPLP and ISSY supported Added ACM test option Added experimental support for 16K QAM and 64K QAM

Added “Notch test” parameter to allow out of range notches Added “L1 part2 change counter” parameter

Fixed narrow band notch width Fixed zero length data slices

V1.1.0.19

2010.08.30

Added peak-to-average power reduction Incorporated DVB-C2 V1.1.2 specification changes Added support for DTA-116 and DTA-117 Fixed bitrate when ISSY is enabled

V1.0.1.17

2010.04.19

Fixed detection of capable output adapters

V1.0.0.16

2010.03.16

Initial version

Revision History

DTC-379 C2Xpress

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-379-C2

C2Xpress: Enables DVB-C2 RF output

DTC-371-IQ

Option to enable DVB-C2 I/Q sample generation, and playout of I/Q samples through the StreamXpress

DTC-305-CM

Option to enable channel modelling

1. Introduction

The DTC-379 C2Xpress software package is designed to create DVB-C2 test signals in the form of I/Q sample files or DVB-C2 RF output signals. C2Xpress can be installed by the user on any qualifying PC, as specified in section 2.

C2Xpress allows you to set the DVB-C2 parameters, specify the Data Slice Parameters, PLP parameters and select the PLP sources, add noise, add multiple channel simulation paths and generate the DVB-C2 test signals.

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

Note: The C2Xpress functions depend on the installed options, as specified in section 3.

2. Minimum PC Requirements

* Or equivalent AMD processor

3. C2Xpress Software Options

The C2Xpress software requires a valid license to be installed. Without a valid DTC-379-C2 license installed, C2Xpress will operate in demo mode and is to not enable to generate DVB-C2 signals.

The following options are available:

4. C2Xpress Software Installation

The C2Xpress software installation and C2Xpress license installation instructions can be found in the ‘DTC-379 C2Xpress Installation’ document, which is included in the install package.

5. C2Xpress Overview

5.1. Launching C2Xpress

The C2Xpress program can be started simply from the Start Menu:

Start > All Programs > DekTec > C2Xpress

DTC-379 C2Xpress

7 6 8

10 10

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-C2 signal.

5.2. C2Xpress Application Layout

1. Menu Bar The top area of the C2Xpress 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 C2Xpress -settings file.

3. General DVB-C2 Parameters This area allows you to set the general DVB-C2 parameters.

4. Frame Information This area displays the DVB-C2 frame information.

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

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

7. Notches This area allows you to specify Notch bands.

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

9. 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.

DTC-379 C2Xpress

10. L1 Parameter Updates This area allows you to specify the L1 parameter updates. For each update a tab page is inserted where you can specify the updated parameters and the number of frames the updated parameters set is used.

11. Status Bar The status bar shows the validity of the DVB-C2 parameter set.

6. Walkthrough: Generation of a DVB-C2 RF signal

This walkthrough will guide you through the generation of a DVB-C2 RF signal.

- Start C2Xpress application C2Xpress can be started from the start menu or using the desktop shortcut. After start-up all DVB-C2 parameters are set to default values.

- Set general DVB-C2 parameters

- Set Data Slice and PLP Parameters Modify the Data Slice and PLP parameters and optionally add more Data Slices and/or PLPs. To add more Data Slices right-click the mouse in the Data Slice and PLP parameter area and select: Add Data Slice. Alternatively, the Insert key can be used. To add more, select the Data Slice to which the PLP has to be added then right-click the mouse and select: Add PLP. Alternatively, the Insert key can be used. To remove a complete Data Slice or a PLP or, select the Data Slice or PLP then right-click the mouse and select: Remove Data Slice or Remove PLP. The shortcut key in this case is Delete. To navigate through the Data Slice and 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.

- Set Output Format Set the Format to RF, thereafter you can specify the output adapter, RF frequency and RF level.

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

- Save C2Xpress-Settings Optionally save the current C2Xpress settings to file by pressing the save button in the toolbar, or selecting Save File in the menu bar.

- Generate RF signal

The generation of the RF signal can be started by pressing the Generate output button in the toolbar, or selecting Generate output in the menu bar.

The generation can be stopped by pressing the Cancel generation button in the toolbar, or selecting Cancel generation in the menu bar.

7. C2Xpress Application GUI

The following sections describe the parameter groups and areas in the GUI of the C2Xpress application.

+ 12 hidden pages

DekTec DTC-379 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual