Rohde and Schwarz FPL1-K40 - Phase Noise Measurement Application

Phase noise is an important parameter in wireless communications systems. The R&S FPL1-K40 option enables the R&S FPL1000 to perform fast and easy phase noise measurements in development and production.

Equipped with the R&S FPL1-K40 option, the R&S FPL1000 can measure single-sideband phase noise across a selectable carrier offset frequency range displayed on a logarithmic axis. Based on the measured phase noise, the user can determine the residual FM/φM and the jitter.

Phase noise measurement

• Carrier offset frequency range selectable from 1 Hz to 1 GHz in 1/3/10 sequence (1 Hz, 3 Hz, 10 Hz, 30 Hz, etc.)
• Number of averages, sweep mode and filter bandwidth can be individually selected for every measurement subrange to optimize the measurement speed
• Fast results for the subranges are obtained by starting the measurement at the maximum carrier offset
• Verification of carrier frequency and power prior to each measurement to prevent incorrect measurements
• Improvement of dynamic range by measuring the inherent thermal noise and performing noise correction

Measurement of residual FM/φM and jitter

• Integration across the entire selected carrier offset frequency range or across a selectable subrange
• Tabular display of residual FM, residual φM, and RMS jitter in addition to measurement trace

Evaluation support

• Limit lines with pass/fail indication
• Display of phase noise at up to four selectable frequency offsets
• Additional markers

Easily control measurement settings

Control your measurements (verification and tracking) in this window. For example, the AM rejection function can suppress AM noise.

All phase noise measurement settings in one window

All settings for phase noise measurements (e.g. measurement range, average count, sweep mode) can be changed in the phase noise settings window.