R&S®FSPN Phase noise analyzer and VCO tester

Unrivaled sensitivity meets high speed

R&S®FSPN Phase noise analyzer and VCO tester
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R&S®FSPN Phase noise analyzer and VCO tester
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R&S®FSPN Phase noise analyzer and VCO tester
Open Lightbox
R&S®FSPN Phase noise analyzer and VCO tester
Open Lightbox
R&S®FSPN Phase noise analyzer and VCO tester
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R&S®FSPN Phase noise analyzer and VCO tester, Front Low R&S®FSPN Phase noise analyzer and VCO tester, Front High R&S®FSPN Phase noise analyzer and VCO tester, Hero view R&S®FSPN Phase noise analyzer and VCO tester, Side view R&S®FSPN Phase noise analyzer and VCO tester, Back view

Key facts

  • Pure phase noise analyzer and VCO tester with high measurement speed due to hardware-implemented real-time cross-correlation
  • Very high sensitivity for phase noise measurements thanks to dual synthesizers and cross-correlation included in the base unit, typ. –163 dBc (1 Hz) at 1 GHz carrier frequency and 10 kHz offset
  • Frequency range from 1 MHz to 26.5 GHz
  • Extremely low‑noise internal DC sources for automatic VCO characterization
  • Simultaneous measurement of phase noise and amplitude noise
  • 3 year warranty extension

Increased efficiency and reproducibility of phase noise measurements from lab to production

The R&S®FSPN phase noise analyzer and VCO tester is designed to provide both very high sensitivity and measurement speed for production and design engineers working in these fields characterizing sources such as synthesizers, VCOs, OCXOs, and DROs. It is the ideal instrument for demanding development and production phase noise and VCO analysis.
Equipped with two low phase noise synthesizers and a real-time cross correlation engine for increased measurement sensitivity, just a few correlations are needed to measure very high-quality oscillators, synthesizers or VCOs in production. Increase the number of correlations to characterize the most sensitive commercially available synthesizers and oscillators in R&D.

Features & benefits

Measurement speed taken to its limit

Speed up the development of your device

Signal sources can be developed and optimized faster using an instrument that delivers results in a short measurement time. The R&S®FSPN takes just a few seconds to display the phase noise trace of high-end sources like OCXOs or DROs.

Phase noise analysis on the R&S®FSPN
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Phase noise analysis on the R&S®FSPN

Phase noise measurements with highest sensitivity

Real-time cross-correlation for improved phase noise sensitivity

The R&S®FSPN base unit includes cross-correlation functionality to measure sources that have very low phase noise, even lower than the phase noise of the internal high-end sources. The improvement that can be expected when using this functionality is as follows:

ΔL = 5 · log(n), where

  • ΔL: improvement in phase noise sensitivity in dB,
  • n: number of cross-correlations

Using the R&S®FSPN, just a few correlations are needed to measure a very good quality oscillator. This shortens measurement time which is essential in production environments. As an example, increasing the number of correlations by a factor of 10 lowers the inherent phase noise of the R&S®FSPN by 5 dB.

Simultaneous measurement of phase noise and amplitude noise
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Simultaneous measurement of phase noise and amplitude noise

The R&S®FSPN measures phase noise and amplitude modulation in parallel and shows the current cross correlation sensitivity gain indicated by the gray area.

Fastest VCO characterization

Thanks to its extremely low-noise internal DC sources, the R&S®FSPN can measure the phase noise of voltage-controlled oscillators (VCO) at various tuning and supply voltages. VCO characterization varying the tuning voltage or the supply voltage can be completed extremely fast. The following parameters are delivered instantaneously:

  • Frequency versus voltage
  • Tuning slope versus voltage
  • Output power versus voltage
  • Current drain versus voltage
  • Output power versus frequency

VCO characterization
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VCO characterization

Transient response analysis

Up to 8 GHz wideband analysis for frequency and phase measurements in time domain

The R&S®FSPN offers up to 8 GHz bandwidth for detailed characterization of synthesizers, measuring the settling times after a frequency hop, ramps, switching times etc. For narrowband characterization, the R&S®FSPN offers narrowband analysis down to 40 MHz, e.g. to analyze the transient response of PLLs in detail.
The display offers a persistence mode of all traces, which makes it easy to estimate how strongly the parameters scatter or whether there are any outliers.

Transient analysis with settling time measurement
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Transient analysis with settling time measurement

Available models

Available models
Models
Frequency range
Phase noise
Instrument type

R&S®FSPN8 Phase noise analyzer and VCO tester

Order number 1322.8003.06

Frequency range
1 MHz - 8 GHz
Phase noise
< –163 dBc (1 Hz)
(f = 1 GHz, 10 kHz offset)
Instrument type
Phase noise analyzer and VCO tester

R&S®FSPN26 Phase noise analyzer and VCO tester

Order number 1322.8003.24

Frequency range
1 MHz - 26.5 GHz
Phase noise
< –163 dBc (1 Hz)
(f = 1 GHz, 10 kHz offset)
Instrument type
Phase noise analyzer and VCO tester

Related videos

The R&S®FSPN – unrivalled sensitivity meets high speed

Next generation technologies like radar and satellite communication with high data rates call for innovative testing solutions to develop and manufacture RF components. With the launch of the R&S®FSPN, Rohde & Schwarz is adding a new member to the phase noise analyzer portfolio, enabling increased efficiency and reproducibility of phase noise measurements and VCO characterization from lab to production. Watch the video and find out more!

29-Sep-2021

More about phase noise measurements

White paper: Understanding voltage controlled oscillators

Download this white paper and learn more about voltage controlled oscillators and measurements made during the VCO characterization process.

More information

White paper: Understanding phase noise fundamentals

This white paper provides a brief technical introduction to phase noise concepts as well as an overview of how phase noise is measured and reported.

More information

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