Table Of Contents

Using RF List Mode

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    Last Modified: March 28, 2019

    An RF configuration list is composed of configuration list steps. Each step specifies the state of the instrument by specifying values for attributes/properties. Out of all available properties, select only those that you want to set from step-to-step and add them to the list.

    To use the RF list mode, complete the following steps:
    1. Create the RF configuration list.
      1. Call Create Configuration List.

        When the set as active list input is set to True, the newly created list is set as the active configuration list.

      2. When you call Create Configuration List, pass the array of properties or attribute IDs that you intend to change between configuration list steps.
    2. If in the previous step you did not specify the active configuration list, do so now using the Active Configuration List property or attribute. The active configuration list also specifies whether NI-RFSA operates using the RF list mode.
    3. When the list is first created, the list has no steps. Populate the steps that make up the list, by calling Create Configuration List Step. When the set as active step input is set to True, the newly created step becomes the active configuration list step.
    4. If in the previous step you did not specify the active configuration list step, do so now using the Active Configuration List Step property or attribute.
    5. While the configuration list step is active, use the NI-RFSA property node one of the set attribute functions to change the default values of those properties and attributes. Initially, this configuration list step contains the driver default values for each configuration list property that you specified using Create Configuration List.
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      Note

      Configuration list steps are zero-based and numbered in the order in which you created them for the active list. List execution always starts with step zero.

    6. To start RF list mode operation, call Initiate.

      After Initiate, the device starts executing the list as indicated by the Active Configuration List property or attribute.

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      Note

      If you set the active list to "", the NI-RFSA device operates without using RF list mode.

    The RF configuration list advances at the end of each record, and the Ready for Advance Event waits for the device to settle in the new configuration; therefore, each record has a corresponding list step. If there are more records than list steps, the list steps advance from the last step to step zero. For example, if you have 10 records and five steps, records five through nine are acquired with list steps zero through four. This also applies to infinite records.

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    Note

    For the PXIe-5663E/5665/5667, RF list mode requires at least one available PXI backplane trigger for synchronization between the RF vector signal analyzer modules.


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