Frequency Response Analysis (Bode Plot) Option for RTM3000 Oscilloscope
The R&S RTx-K36 frequency response analysis (Bode plot) option lets you perform low-frequency response analysis on your oscilloscope easily and quickly. It characterizes the frequency response of a variety of electronic devices, including passive filters and amplifier circuits. For switch mode power supplies, it measures the control loop response and power supply rejection ratio. The frequency response analysis option uses the oscilloscope's built-in waveform generator to create stimulus signals ranging from 10 Hz to 25 MHz. Measuring the ratio of the stimulus signal and the output signal of the DUT at each test frequency, the oscilloscope plots gain and phase logarithmically.
Bode Plot Display
A Bode plot displays the frequency response of an electrical system. It is divided in two parts, a magnitude plot and a phase shift plot. The Bode plot display is divided into several sections.
Bode plot diagram
The Bode plot diagram has the frequency presented on the x-axis. The gain (blue color waveform) and phase (orange color waveform) scales are on the y-axis. The magnitude plot represents the gain of a system between input and output. The phase plot shows the phase shift between input and output.
Bode plot result table
In the Bode plot result table, all sample points are displayed with the respective value for the frequency, gain, phase and amplitude. If you select a sample in the table, the respective points in the Bode plot are highlighted by a white line on the gain and the phase curve.