This chapter provides information on port power control and configuration and, if equipped, attenuator configurations for the VNA in 4-Port Mode. The power menus and associated field toolbars allow the user to set various power mode parameters which apply to the currently active channel. The power menus, their link structure, appearance, and related dialog boxes vary depending on the setting of the SWEEP TYPE menu as either a Frequency-Based Sweep (Linear or Log), a Segment-Based Sweep (Frequency- or Index-Based), or a Power Sweep (CW Frequency or Swept Frequency).