Rohde & Schwarz FSWP Series Phase Noise Analyzers
3 models with full specifications from Rohde & Schwarz.
The Rohde & Schwarz FSWP family consists of high-performance Phase Noise Analyzers and VCO Testers designed for fast, highly sensitive phase noise measurements. This series comprises three primary models: the FSWP8, FSWP26, and FSWP50. Each instrument integrates phase noise analysis, AM noise measurement, and voltage-controlled oscillator (VCO) characterization within a single chassis. Utilizing a dual-channel internal local oscillator architecture, these instruments support cross-correlation measurements to isolate and reduce internal noise. This family serves demanding engineers in aerospace, defense, and high-frequency telecommunications who require high accuracy in signal source analysis.
- Frequency Range
- 1 MHz to 50 GHz
- Display
- 12.1-inch WXGA color TFT touchscreen
- Maximum Cross-Correlations
- 1,000,000
- Tuning Voltage Range
- -10 V to +28 V
Models in this series
| Model | Type | Display | Power Supply | Storage Temperature Range |
|---|---|---|---|---|
| FSWP8 | Sources, Signal | 12.1-inch WXGA color TFT touchscreen (1280 × 800 pixels) | 100 V to 240 V AC, 50 Hz to 60 Hz / 400 Hz, 120 W typical power consumption | -40 °C to +70 °C |
| FSWP26 | Noise Figure | 12.1-inch WXGA color TFT touchscreen (1280 × 800 pixels) | 100 V to 240 V AC (±10%), 50 Hz to 60 Hz / 400 Hz (±5%), typical 120 W (up to 400 W with options) | -40 °C to +70 °C |
| FSWP50 | *misc | 12.1-inch WXGA color TFT touchscreen (1280 × 800 pixels) | 100 V to 240 V AC (±10%), 50 Hz to 60 Hz / 400 Hz | -40 °C to +70 °C |
Frequency Coverage and Physical Interfaces
The major differentiator between the family members is their maximum RF input frequency range. The FSWP8 operates in the 1 MHz to 8 GHz range and features an N-female RF input connector. The FSWP26 extends coverage from 1 MHz to 26.5 GHz, using a 3.5 mm female RF input connector. The FSWP50 covers up to 50 GHz. For the FSWP50, frequency extensions up to 500 GHz are possible using external harmonic mixers. Additionally, while standard phase noise analysis starts at 1 MHz, adding the optional FSWP-B1 spectrum analyzer card to the FSWP50 extends the lower measurement limit down to 10 Hz.
All three instruments share a uniform physical design with a 12.1-inch WXGA color TFT touchscreen display. Connectivity options across the series include Gigabit LAN, USB 2.0, USB 3.0, DVI-D, and DisplayPort, with GPIB interfaces available as an option.
Measurement Capabilities and VCO Testing
Standard capabilities across the series include Phase Noise, AM Noise, and VCO Characterization. For VCO testing, both the FSWP26 and FSWP50 offer a tuning voltage range from -10 V to +28 V with a 0.1 mV resolution and 20 mA maximum current, alongside dual supply voltage ranges from 0 V to 16 V.
To achieve extreme sensitivity, the instruments implement dual-channel cross-correlation. The FSWP26 and FSWP50 allow users to select from 1 to 1,000,000 cross-correlations to suppress internal noise and measure very low-level phase noise offsets. For specialized tasks, optional measurement modes are available, such as Signal and Spectrum Analyzer functionality (FSWP-B3 on the FSWP8), Pulsed Phase Noise (R&S FSWP-K4), and Transient Analysis (R&S FSWP-K60).
Frequently asked questions
- Can the frequency range of the FSWP50 be extended beyond 50 GHz?
- Yes, the FSWP50 supports frequency extensions up to 500 GHz when utilizing external harmonic mixers.
- What is the lower frequency limit of the FSWP50 when equipped with the spectrum analyzer option?
- When equipped with the FSWP-B1 Spectrum Analyzer option, the frequency range of the FSWP50 can cover down to 10 Hz.
- What is the tuning voltage range for VCO characterization on the FSWP26?
- The tuning voltage range on the FSWP26 is -10 V to +28 V with a tuning voltage resolution of 0.1 mV and a maximum current of 20 mA.