The HP/Agilent 8970B Noise Figure Meter with Option 020 delivers precision noise figure and gain measurements from 10 MHz to 2047 MHz. This instrument characterizes noise performance across components and systems with noise figure uncertainty of ±0.1 dB and gain uncertainty of ±0.15 dB. Automatic second-stage correction enables accurate readings for low-gain devices, while onboard ENR calibration table storage with automatic frequency interpolation eliminates manual calculation. The meter simultaneously measures noise figure (0 to 30 dB range) and gain (-20 dB to +40 dB range) at 0.01 dB resolution, or 0.001 dB over HP-IB interface.
## Technical Specifications
• **Frequency Range:** 10 MHz to 2047 MHz (Option 020)
• **Noise Figure Measurement Range:** 0 to 30 dB
• **Noise Figure Uncertainty:** ±0.1 dB (14 to 16 dB ENR source, 0 to 55°C)
• **Noise Figure Resolution:** 0.01 dB (0.001 dB over HP-IB)
• **Noise Figure (input power <-60 dBm):** <7 dB + 0.002 dB/MHz (Option 020)
• **Gain Measurement Range:** -20 dB to +40 dB
• **Gain Uncertainty:** ±0.15 dB
• **Gain Resolution:** 0.01 dB (0.001 dB over HP-IB)
• **Frequency Resolution:** 1 MHz
• **Tuning Accuracy (10°C to 40°C):** ±(1 MHz + 1% of frequency), 6 MHz maximum
• **Input SWR (50 Ω):** <1.7 (10 MHz to 1600 MHz); <1.8 (10 MHz to 1600 MHz, Option 020); 65 dB
• **Noise Source Drive:** 28.0 ±0.1 V
• **Operating Temperature:** 0°C to 55°C
• **Dimensions:** 425 mm W × 143 mm H × 476 mm D
## Key Features
• Simultaneous noise figure and gain measurements
• Automatic second-stage correction for low-gain device characterization
• Dedicated mixer measurement modes
• External local oscillator control capability
• ENR calibration table storage with automatic interpolation
• Front-panel LED displays for frequency, gain, and noise figure
• Rear-panel BNC connectors for swept oscilloscope/X-Y recorder displays
## Compatibility & Integration
Interfaces with Agilent 346x and 347x series noise sources. HP-IB control available for remote operation and enhanced resolution (0.001 dB).
