Primary measurement functions:

Phase Noise Measurement

Phase Noise, Residual Phase Noise, Additional Phase Noise

Continuous Wave, Pulse (as low as 50ns pulse width), Burst Test Mode

High drift or slow modulation

Internal or External Reference Testing

Amplitude Noise Measurement

Continuous Wave and Pulse Test Modes

High drift or slow modulation

Transient Measurement

Frequency to Time (Hopping)

Phase to Time

Amplitude over time

Short-term and long-term frequency stability/Allen variance measurement

1s to 10 days

Voltage-Controlled Oscillator (VCO)

Feature Measurement

Tuning, tuning sensitivity, push-pull, power, current, harmonics, and phase noise