Rohde & Schwarz FSUP Series Signal Source Analyzers
2 models with full specifications from Rohde & Schwarz.
The Rohde & Schwarz FSUP series of signal source analyzers integrates high-end spectrum analysis and dedicated phase noise testing capabilities into a single platform. This series is designed for engineers and technical buyers who require complete characterization of oscillators, synthesizers, and transmitters. By combining multiple instrument functionalities, the FSUP series simplifies test setups for measuring transient responses and phase noise.
The family features two main models: the FSUP26, which covers frequencies up to 26.5 GHz, and the FSUP50, which extends coverage up to 50 GHz. Both instruments feature an 8.4-inch color SVGA TFT LCD display and are built for demanding R&D and production environments. Selecting between these models depends primarily on your required frequency range and specific interface configurations.
- Frequency Range
- 20 Hz to 50 GHz
- Display Size
- 8.4 in (800 x 600)
- RF Impedance
- 50 ΓA
- Max RF Input Level
- +30 dBm (1 W)
Models in this series
Frequency Range and Configurations
The primary differentiator within the FSUP product line is the frequency range. The FSUP26 operates as a spectrum analyzer from 20 Hz up to 26.5 GHz, and as a phase noise tester from 1 MHz to 26.5 GHz. If higher frequency measurements are required, the FSUP26 supports external mixers from the R&S FS-Zxx series to extend its range up to 110 GHz.
For native millimeter-wave applications, the FSUP50 provides a frequency range from 20 Hz up to 50 GHz without external mixers. The FSUP50 also features a defined input VSWR across its range, starting from less than 1.5 at frequencies up to 3.6 GHz, up to less than 2.5 in the 26.5 GHz to 50 GHz band.
Phase Noise and Attenuation Characteristics
Both instruments are optimized for phase noise testing and signal characterization. The FSUP26 offers an option (FSUP-B60/B61) that improves the cross-correlation factor by up to 20 dB, enabling highly sensitive phase noise measurements. Its sweep time range for spans of 10 Hz or greater is configurable from 2.5 ms up to 16,000 s.
The FSUP50 includes a configurable RF attenuator with a range from 0 dB to 75 dB, adjustable in 5 dB step sizes, allowing users to optimize the signal-to-noise ratio and prevent receiver overload. Both models support a maximum safe RF input level of +30 dBm (1 W).
Interfaces and System Integration
The FSUP series is built on platforms that support standard automated test environments. The FSUP26 runs Windows XP Embedded as its internal operating system and features a SCPI-compatible GPIB interface (IEEE 488.2).
The FSUP50 provides physical connectivity through multiple interfaces, including GPIB (IEEE 488.2), LAN (10/100 Base-T), USB 2.0, VGA, RS-232, and PS/2. It is equipped with a removable hard disk drive for data security and simplified maintenance. Physically, the FSUP50 weighs 17.5 kg and has dimensions of 435 mm in width, 192 mm in height, and 460 mm in depth.
Frequently asked questions
- What is the frequency extension capability of the FSUP26?
- The FSUP26 natively measures frequencies up to 26.5 GHz. However, its range can be extended up to 110 GHz using external mixers from the R&S FS-Zxx series.
- What are the safe input limits for these analyzers?
- Both models support a maximum safe RF input level of +30 dBm (1 W). For DC voltage, the FSUP50 has a limit of 0 V, while the FSUP26 supports up to 50 V when AC-coupled.