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Walkthrough: generation of a isdb-tmm rf signal, Tmmxpress application gui, Dtc-382 tmmxpress – DekTec DTC-382 TmmXpress User Manual

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DTC-382 TmmXpress Manual

Essential Tools for Digital-TV Professionals

April 2014

DTC-382 TmmXpress

7. 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.
8. Status Bar

The status bar shows the validity of the ISDB-Tmm/T

SB

/T parameter set.

6. Walkthrough: Generation of a ISDB-Tmm RF signal

This walkthrough will guide you through the generation of an ISDB-Tmm RF signal.

- Start TmmXpress application

TmmXpress can be started from the start menu or using the desktop shortcut.

After start-up all ISDB-T parameters are set to default values.

- Set general ISDB-Tmm parameters

The sub-channel specifies the sub-channel of the centre segment of the connected ISDB-Tmm

segments.

- Select the source and set layer parameters

For each block of 13- 3- or 1-segments select the transport stream source, double click on the

source parameter and select a transport-stream file. If the file has valid TMCC information, these

ISDB-T parameters can be used by checking the “Use TMCC info” checkbox; otherwise the layer-

mapping has to be specified manually.

If the TMCC is used, the layer parameters are fixed and cannot be changed.

To add a transport stream right-click the mouse in parameter area and select: Add TS.

Alternatively, the Insert key can be used.

To remove a complete TS, select the TS then right-click the mouse and select: Remove TS. The

shortcut key in this case is Delete.

To navigate through the layer 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.

- 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 TmmXpress-Settings

Optionally save the current TmmXpress 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. TmmXpress Application GUI

The following sections describe the parameter groups and areas in the GUI of the TmmXpress

application.