The Rohde & Schwarz FS-SNS18 is a smart noise source for precision noise figure and gain measurements across 10 MHz to 18 GHz. This instrument automatically loads calibration data and compensates for environmental temperature, eliminating manual parameter entry. It delivers 1 W output power with exceptional flatness (±0.10 dB to ±0.13 dB ENR uncertainty) and operates at an Excess Noise Ratio of 5 dB to 7 dB. The FS-SNS18 integrates directly with R&S signal and spectrum analyzers, phase noise analyzers, measuring receivers, and network analyzers to streamline measurement workflows.
Technical Specifications
• Frequency Range: 10 MHz to 18 GHz
• Output Power: 1 W
• Excess Noise Ratio (ENR): 5 dB to 7 dB
• ENR Uncertainty (Flatness): ±0.10 dB to ±0.13 dB
• VSWR: ≤1.10:1 (0.01 GHz ≤ f < 5 GHz); 1.25:1 (above 5 GHz)
• Temperature Coefficient: 0.009 dB/°C
• Impedance: 50 Ohms
• Power Supply: 5 V digital, 28 V analog; 30 mA to 500 mA
• RF Connector: SMA male
• Operating Temperature: 0 °C to 55 °C
• Storage Temperature: -40 °C to 71 °C
• Dimensions: 38.0 mm (W) × 30.5 mm (H) × 130.0 mm (D)
– Key Features
• Automatic ENR table, uncertainty, and reflection coefficient loading for hands-free calibration
• Real-time temperature readout with automatic compensation (0.009 dB/°C coefficient)
• Reflection coefficient data for automated uncertainty budgeting
• Compact module form factor with 7-pin control interface
• Excellent VSWR performance across operating range
– Typical Applications
• Noise figure characterization of amplifiers and receiver chains
• Gain measurement verification in RF and microwave systems
• Low-noise amplifier (LNA) validation and acceptance testing
• Phase noise and VCO performance assessment
– Compatibility & Integration
The FS-SNS18 integrates with R&S FSW, FSV/A3000, FPS, and FPL1000 signal and spectrum analyzers; FSWP phase noise analyzer; FSMR3000 measuring receiver; ZNL network analyzer; and FSx-K30 noise figure measurement firmware.
