Additional Features: Frequency stability of ±1x10E+08/day -50 dB signal to phase noise with a constant resolution of 0.1 Hz to 13 MHz. Amplitude range from +13.44 dBm to -86.55 dBm in to 50-ohms Resolution of 0.01 dB. Harmonic distortion, with full output amplitude, is -60 dB (5 Hz to 100 kHz), -50 dB (100 kHz to 1 MHz), and -40 dB (1 MHz to 13 MHz). 100 mV RMS/50 ohms Tracking Output (20 to 33 MHz ). 1 MHz Reference Output 220 mV RMS/50 ohms (0 dBm/50 ohms). Step size is continuously adjustable in 0.1 Hz increments. Number of steps: 10, 100, or 1000. Time per step: 1, 3, 10, 30, 100, 300, 1000, and 3000 ms. Sweeps up, down, or both. The Agilent HP 3330B is a reconditioned Automatic Synthesizer that has made an impact throughout the industry due to its capability to digitally sweep frequency and amplitude!