Real Time

Example Video Subjective Evaluation

This example shows you how to configure the equipment and Signal Studio software to monitor a DVB-T/H format video. A similar procedure can also be used for other formats.

Step 1: Setup the equipment

Step 2: Select the DVB-T/H standard

Step 3: Configure the DVB-T/H waveform parameters

Step 4: Configure the signal generator settings

Step 5: Generate and download the waveform to the signal generator

Step 6: View the color bar display result on a USB receiver monitor

Step 1: Set up the equipment as shown below.

Step 2: Select the DVB-T/H standard.

Click DVB-T/H from the Format menu.

Step 3: Configure the DVB-T/H waveform parameters.

  1. In the Waveform Setup (DVB-T/H) pane: click Carrier n.

  2. Edit the parameters to set up a waveform.

  3. Set the Data Source Type to Demo File and select PAL as the video type.

Step 4: Configure the signal generator settings

Click the Instrument Settings node in the tree view, set the MXG/EXG/ESG/PSG’s frequency and amplitude to the values below

Step 5: Generate and download the waveform to the signal generator

  1. Click Generate Waveform button in the tool bar. The software generates an I/Q waveform file in accordance with the current waveform configuration and signal generation setup. Waveform generation time varies proportionally to the complexity of the waveform.

  2. After the waveform is generated, you can examine its characteristics.

    1. View the CCDF plot for the carrier based on the configuration by clicking the carrier in the tree view. For more information, refer to CCDF Plot.

    2. By clicking Waveform Setup in the tree view, you can view plots of the baseband spectrum, I and Q signals, and CCDF curve prior to downloading the file to the signal generator. For more information, refer to CCDF plot and waveform plot.

  3. To download the waveform file to the signal generator, click Download in the tool bar if you have configured the instrument connection. The signal generator automatically begins to play the digital video waveform. The waveform file, however, cannot be modified after downloading it to the signal generator.

Step 6: View the color bar display result on a receiver monitor

You can observe the color bar display on a DVB-T/H receiver as shown in the figure below.