Specifying the Frequencies

To define the operating frequencies, go to the Setup tab in the main window and select the Frequency panel. You can choose from three frequency modes: Single, List, or Sweep.

• Single: Enter a single frequency value in the Single Frequency box (see Fig. 1). The corresponding wavelength is displayed automatically below the frequency field.
• List: Enter multiple frequencies in the Frequency List box (Fig. 2). You can import a list from a text file using the Open button, or export the current list using the Save button.
• Sweep: Perform a frequency sweep using either a linear or logarithmic scale.
  • For a linear sweep, specify the start, step, and stop frequencies (Fig. 3).
  • For a logarithmic sweep, enter the start and stop frequencies, along with a multiplication factor (Fig. 4).

To change the frequency unit (e.g., Hz, kHz, MHz, GHz), go to Tools > Preferences in the main menu, and select the desired unit on the Units page of the Preferences dialog box. See Preferences for more details.