Keysight (Agilent) N9913A

The Keysight N9913A FieldFox is a handheld RF analyzer combining spectrum analysis, vector network analysis, and cable/antenna testing in a single 3.0 kg instrument. Operating from 5 kHz to 4 GHz, it delivers lab-grade measurement accuracy in field environments with a 6.5" color LCD display and MIL-spec durability rated for 0 to 55°C. The analyzer measures all four S-parameters simultaneously, provides ±0.5 dB amplitude accuracy, and achieves -155 dBm DANL at 1 GHz with spur-free dynamic range exceeding 105 dB.

Technical Specifications

• Frequency range: 5 kHz to 4 GHz (Spectrum Analyzer); 30 kHz to 4 GHz (VNA/Cable & Antenna modes)


• Analysis bandwidth (max): 10 MHz


• Real-time bandwidth (max): 10 MHz Measurement Accuracy


• Amplitude accuracy: ±0.5 dB (full band, over temperature range)


• Spur-free dynamic range: ≥105 dB


• DANL @ 1 GHz: -155 dBm


• Phase noise @ 1 GHz: -113 dBc/Hz (1 MHz offset), -111 dBc/Hz (10 kHz offset), -108 dBc/Hz (30 kHz offset)


• Trace noise (RMS): 0.004 dB


• TOI @ 1 GHz: +15 dBm Network Analysis


• S-parameter measurement: S11, S21, S22, S12 (magnitude and phase)


• Simultaneous measurement of all four S-parameters


• Two built-in Type-N (f) ports


• System impedance: 50 Ω nominal; 75 Ω with adapter and calibration kit Cable and Antenna Testing


• Distance-to-Fault (DTF), Return Loss, Cable Loss


• Time Domain Reflectometry (TDR) supported Output and Power


• Maximum output power: Up to 1 dBm


• Full-band tracking generator


• Built-in power meter: 100 kHz to 4 GHz


• USB sensor support for CW, swept-frequency, and RF pulse measurements up to 24 GHz (sensor dependent)

Key Features

• Rugged, portable design: 3.0 kg with MIL-spec durability


• 6.5" transflective color LCD with backlight


• Operating temperature: 0 to 55°C


• Optional preamplifier (full-band)


• Optional spectrum analyzer module


• Optional vector network analyzer module


• Cable and antenna analyzer standard


• Remote control and GPS receiver support (optional)


• LAN connectivity included

Typical Applications Aerospace, defense, and telecommunications field testing; RF network characterization; cable fault location; antenna return loss measurement; in-situ transmission line analysis.

Compatibility & Integration Two Type-N (f) connectors support standard RF test components and sensor equipment. LAN cable included for remote operation and data transfer.