The Keysight N8974B Noise Figure Analyzer delivers precision noise characterization across 10 MHz to 7 GHz with a multi-touch WXGA display interface. This instrument performs simultaneous noise figure and gain measurements, executing complete Y-Factor measurements in 18.3 ms per cycle. The analyzer combines calibration for up to 12 DUT setups, internal preamp capability, and automated ENR data download from SNS series noise sources and USB preamplifiers.
Technical Specifications
• Frequency Range: 10 MHz to 7 GHz
• Measurement Bandwidth: 8 MHz
• Gain Uncertainty: ±0.15 dB
• Instrument Uncertainty: ±0.02 dB (with 4–6 dB ENR noise source)
• Measurement Speed: 18.3 ms per measurement
• Measurement Functions: Noise Figure, Noise Factor, Y-Factor, Gain, Phot, Pcold, Teffective
• Internal Preamp Noise Figure (100 kHz–3.6 GHz): 8 dB + (0.001112 × frequency in MHz)
• Operating Temperature: 0 to 55°C
• Power Input: 100–120 V, 50/60/400 Hz
– Key Features
• Multi-touch WXGA display (1280 × 768 resolution) for intuitive control
• Type-N female RF input connector, 50 Ω nominal impedance
• Internal 7 GHz preamplifier with precision frequency reference included
• Spectrum Analyzer and IQ Analyzer (Basic) modes for extended measurement capability
• Table view displays all measurement parameters simultaneously
• External LO control via GPIB, LAN, or USB for upconverting and downconverting device characterization
• Internal calibration streamlines setup and reduces measurement uncertainty
• Fine Step Attenuator and Noise Floor Extensions options included
– Typical Applications
• RF and microwave amplifier noise performance validation
• LNA characterization and optimization across microwave bands
• Device noise factor and effective temperature measurement
• Multi-DUT production testing with automated calibration sequencing
– Compatibility & Integration
• SNS Series Noise Sources: N4000A, N4001A, N4002A
• USB Preamplifier: U7227C (100 MHz to 26.5 GHz)
• Automated ENR coefficient retrieval from compatible noise sources and preamplifiers
• Internal data storage with external export capability
