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Performing W-CDMA TS 25.141 Clause 6 Transmitter Tests

This topic guides the user through using the preconfigured W-CDMA Clause 6 tests. With some exceptions, Test Case Manager also provides the ability to export the waveform settings for use in the appropriate Signal Studio Software.

Range values such as frequency and amplitude are dependent upon the instrument identified in the Signal Generator (n:<connection status>) node. To find range values, refer to the instrument's User's Guide or Data Sheet.

Each software setting has a hint (setting information) associated with it. To use the hints, just click on the setting and the hint appears below the settings window.

Some fields within the setting windows are grayed out, while others are not and allow a different setting. The grayed out fields are static settings required by the standards and may change, in accordance with the standards, as active fields within the same window or the Common Settings window are changed.

While making changes, you can monitor the signal changes by viewing the graphic at the bottom of the test settings window. If there is a need to save all of the software settings, this can be done by using the Save As... function to create a state file.

  1. Setup the instruments and make the connections.

  2. Configure the instrument(s).

  3. Click the Common Settings node and configure the base station parameter.

  4. Select a test.

  5. Configure the BS Configuration settings:

    1. If the Spectrum Mode setting is available for the test and the base station is using non-continuous spectrum, use the drop-down menu to select Non-contiguous Spectrum.

    2. In the Frequency parameter, enter the carrier Frequency of the base station.

    3. If the Pout field is active, enter the base station output power.

      For tests 6.6, the W-CDMA Interferer Amplitude property automatically adjusts by –30 dB from the Pout value.

    4. When Non-contiguous spectrum is enabled, set the Lower Edge and Upper Edge spectrum values.

    5. If the settings include Transmit Diversity and it is needed, ensure that the check box shows as checked.

  6. Configure the interferer non-grayed out (active) parameters:

    1. For a TS 25.141 compliant test signal, leave State enabled.

      If there is a need to disable State, refer to the State Checkbox Behavior topic for more information.

    2. Click the Signal Generator field and use the drop-down menu to select an instrument for the current signal.

      The drop-down selection menu contains all of the instruments configured in a previous step.

    3. Set the remaining parameters as needed or required.

      For test 6.4.6, the Amplitude, EC, and Ioh parameters change with the Test Case selection.

  7. If a test includes AWGN, determine whether to include the AWGN by changing the status of the State checkbox.

  8. If there is a need to reconfigure the grayed out parameters, which causes the test to no longer be in compliance with the 3GPP standards, perform the following steps:

    1. Enable the Override Settings by checking the box.

      This causes the grayed-out parameters(inactive) to become active so they can be changed.

    2. Modify the settings as needed.

      After modifying the settings, if the Override Settings is disabled by unchecking the box, the software resets the grayed out parameters back to their default settings based on the 3GPP standards.

  9. Click the Execute button.

  10. If there is a need to stop the signals, click the Stop button.

    To restart the signals, click the Execute button, which again downloads all of the settings.

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