Instrument Function > RF Block > RF Measurement > NRP-Z Power Analysis > Test Setup Example
Test Setup Example

As a power meter has no built-in selection, it is measuring all signal components from nearly DC to 40 GHz and higher. Therefore, the DUT's signal must be rather pure or subjected to external filtering (harmonics, spurious) before measured.

The test setup for the power analysis in the power versus frequency or power versus power is as follows:

  1. Connect the DUT (for example bandpass) to the RF output of the instrument and the RF input of the R&S NRP-Zxx sensor (like the R&S NRP-Z21).

  2. Connect the USB output of the R&S NRP-Zxx to the SENSOR connector of the instrument.

  3. Open the "NRP-Z Analysis" dialog in the "RF" block of the generator

  4. Set up the measurement and scale diagram in the "Configure…" dialog (for example fast measurement, 200 measurement points, range, x-axis and y-axis scale).

  5. Trigger measurement by pressing the "Start" button in the "NRP-Z Power Analysis" diagram.

  6. If necessary, perform the further settings:

    1. Set markers with the rotary knob. To access the markers, activate the "NRP-Z Analysis Frequency / Marker" diagram view with the REARR key. The markers are moved by means of the cursor and the roll key to the desired trace position.

      Note: To activate the "NRP-Z Analysis Frequency / Marker" view, see "REARR list - Power Analysis". Repeat pressing the REARR key until this view appears.

    2. Store a hardcopy of the measurement results "Configure Diagram" ("Save…" submenu).

    3. Apply user correction. "Ucor" is also available for NRP-Z measurements (see "User Correction").

    The diagrams below show the result of the above settings, an RF frequency range of 1 to 6 GHz and the level range of -65 dB to 5 dB.

    The graphs show the different diagram views.

    Standard view, diagram and buttons are displayed
    Full screen "Marker View", diagram and marker list are displayed
    Fullscreen view, only the diagram is displayed

 


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