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Configuring FM Stereo and RDS Signals for Receiver Test

The following example procedure shows you how to configure the equipment and Signal Studio software for a typical RDS information receiver test.

In parameter view windows, you can check and then click the desired parameter for a brief description.

  1. Set up the equipment as shown below.

       

  2. Select the FM Stereo/RDS format.

    Open the software and select FM Stereo/RDS from the Format menu.

  3. Configure the carrier parameters.

    Select Carrier 0 from the tree view.

    This opens four tables of carrier parameters you can set for that carrier. If your test setup requires multiple carriers, click to create up to 11 additional carriers.

    Set up the following parameters of each carrier to the values shown below.

  4. Click RDS in the tree view, and perform the following steps for each carrier.

    1. Enter the PI Code Value, which is the 16-bits programme identification code.

    2. Select the Programme Type (PTY).

  5. Configure the RDS Message.

    1. Click Basic tuning and switching information and configure the following parameters in the message table, as shown below.

      • Interval: 0.0s

      • Music/Speech: Music

      • Programme Service Name: This example shows RDS Test.

      • Alternative Frequency State: On

      • Alternative Frequencies: your choice

    2. Click Programme Item Number and slow labeling codes and configure the parameters in the message table as desired.

    3. Click on Radio Text and input a text string of your choice. This example shows Radio Text. If you would like to import a text file, do the following:

      1. Click , a drop-down menu appears.

      2. Select Radio Text messages from text file. A dialog box appears.

      3. Click Browse to navigate to the .txt file of your choice. You can also specify the Group Version, Maximum Number of Messages and Interval (s)

    4. Click Clock-time and date cell, and select the Modified Julian Day. This example shows 08-08, 2008.

    5. Click UTC Hour and UTC Minute cell, and select the time. This example shows 00:00.

    Rerun this step for flexible RDS receiver tests with different configurations (tests at different levels).

  6. Configure the signal generator settings.

    Click the Signal Generator node in the tree view and set the frequency and amplitude to the values below.

  7. Generate and download the waveform to the signal generator.

    1. From the tool bar, Click to generate the waveform .

    2. Observe the message area of the status bar to track waveform generation progress.

    3. If you want to generate and download the waveform at the same time, click to complete generating and downloading.

  8. Evaluate the RDS messages on the receiver.

    The RDS information is displayed on the RDS receiver, as shown below: