The Keysight N8975B Noise Figure Analyzer measures noise performance across 10 MHz to 26.5 GHz with high repeatability and accuracy. Its multi-touch WXGA display (1280 × 768) enables intuitive gesture-based navigation—stretch, pinch, and drag controls simplify menu access and data exploration. Beyond noise figure analysis, the instrument integrates spectrum analyzer capability (up to 44 GHz) and basic IQ analyzer modes, providing comprehensive device characterization in a single platform.
– Technical Specifications
• Frequency Range: 10 MHz to 26.5 GHz
• Measurement Functions: Noise Figure, Noise Factor, Y-Factor, Gain, Phot, Pcold, and Effective Temperature (Teffective)
• Analysis Bandwidth: 8 MHz (standard); 25 MHz available via B25 option
• Measurement Speed: 18.3 ms per measurement
• Gain Uncertainty: ±0.15 dB
• Instrument Uncertainty: ±0.02 dB (with 4–6 dB ENR noise source)
• RF Input: Type-N female, 50 Ω nominal
• Display: Multi-touch, 1280 × 768 (WXGA)
• Operating Temperature: 0°C to +55°C
• Power: 350 W (operational), 20 W (standby)
• Mains Supply: 100–120 V or 220–240 V, 50/60/400 Hz
• Operating System: Windows 10
– Key Features
• Simultaneous noise figure and gain measurements with table view displaying all computed parameters
• Internal calibration mode reduces measurement time by eliminating user calibration steps
• Built-in uncertainty calculator with auto-population from noise sources and preamplifier data
• Spectrum analyzer mode for wideband characterization up to 44 GHz
• Basic IQ analyzer mode for signal modulation analysis
• Automatic ENR data download from compatible noise sources
• External local oscillator control via GPIB, LAN, or USB for upconverted DUT testing
– Typical Applications
• Low-noise amplifier (LNA) and receiver characterization
• RF front-end system noise performance validation
• Preamplifier and downconverter assessment
• Multi-parameter device evaluation combining noise, gain, and spectral content
– Compatibility & Integration
• Noise Sources: SNS Series (N4000A, N4001A, N4002A)
• Preamplifiers: U7227 Series USB preamplifiers, including U7227C (100 MHz to 26.5 GHz)
• Standard Options: P26 (26.5 GHz internal preamplifier), PFR (precision frequency reference), FSA (fine step attenuator), NFE (noise floor extensions), B25 (25 MHz analysis bandwidth)
• Extended Range: Frequency capability extendable to 110 GHz with block downconverters
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