The Keysight N9962A FieldFox is a handheld microwave spectrum analyzer delivering lab-grade measurement precision across 5 kHz to 50 GHz in a portable, field-hardened package. This multi-function instrument combines spectrum analysis, cable and antenna characterization, and power metering into a single device, eliminating the need to transport multiple instruments. With spur-free dynamic range exceeding 104 dB, phase noise of −111 dBc/Hz at 1 GHz (10 kHz offset), and DANL of −159 dBm at 1 GHz, it provides precision metrics for RF and microwave system troubleshooting, maintenance, and characterization across Ka-band and below.
Technical Specifications
Frequency and Performance
• Frequency Range: 5 kHz to 50 GHz
• Spur-Free Dynamic Range: >104 dB
• Phase Noise @ 1 GHz (10 kHz offset): −111 dBc/Hz
• Phase Noise @ 1 GHz (30 kHz offset): −108 dBc/Hz
• Phase Noise @ 1 GHz (1 MHz offset): −113 dBc/Hz
• DANL @ 1 GHz: −159 dBm
• Third Order Intercept @ 1 GHz: +13 dBm
• Amplitude Accuracy: ±0.5 dB at power-up, no warm-up required
• Real-Time Bandwidth: 10 MHz gap-free
• Maximum IQ Streaming Bandwidth: 1 MHz
Physical and Environmental
• Weight: 3.2 kg (7.1 lb)
• Dimensions: 292 mm (H) × 188 mm (W) × 72 mm (D)
• Ruggedness: MIL-PRF-28800F Class 2
• Operating Temperature: −10 to +55°C
• Warranty: 3 years
Measurement Capabilities
• Built-in Ports: 2
• Connector Type: NMD 2.4 mm (m)
• Attenuator Range: 30 dB (5 dB steps)
• Power Meter Range: 5 kHz to 50 GHz
• Tracking Generator Output: Up to 4 dBm (optional)
– Key Features
• Cable and antenna analyzer included in base model
• Built-in power meter with full frequency coverage
• Optional tracking generator for stimulus-response measurements
• Optional preamplifier, noise figure measurements, pulse characterization, and I/Q data capture
• Optional interference analyzer, spectrogram, time gating, VSWR/reflection, and extended range transmission analysis
• Optional GPS/GNSS receiver for geolocation and timestamping
• EMF/EMI and OTA measurement capabilities (5G TF, LTE)
• Built-in DC voltage source available
– Typical Applications
• RF and microwave system field maintenance and troubleshooting
• Antenna and transmission line characterization
• Spectrum monitoring and interference detection
• Radar pulse profiling and analysis
• 5G and LTE over-the-air measurements
• Cable and connector verification
– Compatibility & Integration
The N9962A integrates multiple measurement functions into a single handheld platform, reducing field kit complexity. Optional modules extend capability to specialized domains including interference analysis, time-domain pulse measurement, and geolocation-referenced spectrum data.
