# BasebandStep
Source time dependence that describes a baseband step function. Unlike frequency-domain sources such as GaussianPulse, the baseband step produces a signal that ramps up from zero to a constant amplitude, which is useful for time-domain steady-state analysis.
# Rise Time
rise_time: Time duration over which the step function ramps up from zero to full amplitude.
Type: floating-point number
- Unit: s (default), ps, or fs
- Constraint: greater than 0
- Required field
# Amplitude
amplitude: Real-valued maximum amplitude of the time dependence.
Type: floating-point number
- Unit: unitless
- Constraint: greater than or equal to 0
- Default: 1
# Phase
phase: Phase shift of the time dependence.
Type: floating-point number
- Unit: rad
- Default: 0