Configure measurement settings for pulse profile and pulse stability measurements.

  1. Click the Measurement tab of the Configuration Pane to open the measurement page.
  2. Configure the measurement settings by defining the following values in the General tab.
    1. Configure the measurement bandwidth using the Measurement Bandwidth (Hz) field.
      Note The I/Q rate chosen by the analyzer to acquire the data is 1.25 times the selected measurement bandwidth.
    2. Configure the Acquisition Trigger Source drop-down to match the value in the Pulse Trigger Destination field of the Stimulus » Trigger Settings tab.
    3. Configure the Acquisition Pretrigger Time field.
      Note NI recommends setting the pre-trigger time to a value low in relation to your PRI, but at least 2.5 times the inverse of your measurement bandwidth.
    4. Configure the Acquisition Trigger Delay field to align the trigger to the top of the pulse.
  3. Under the Measurement tab, navigate to Pulse Stability » Test Points.
  4. Choose from the following options:
    1. Select Defined Points from the combo box and select the Measurement Points you want to enable.
      Note You can enable and disable added measurement points by clicking the Enable? button. To add or remove measurement points, click the toggle to the right of the Enable? button.
    2. Select Sampling Window from the combo box and select Cursor Position (%) and Window Size (s) to define the test point starting point and the region in which test points will be selected.
  5. Under the Measurement tab, navigate to Pulse Stability » Averaging .
  6. (Optional) If you want to average the measurements, click Enable Multiple Burst Averaging and select the number of bursts to average.
  7. (Optional) If you want to enable filtering, navigate to Measurement » Pulse Stability » Advanced to configure the following advanced settings.
    1. Set the number of taps using the #Taps field and click Enable Filter.
    2. Set the Stability Measurement Offset value to define the pulse number from which the stability analysis is started.