Agilent / Keysight N9320B RF Spectrum Analyzer, 9 kHz to 3 GHz

The Agilent/Keysight N9320B is a portable RF spectrum analyzer covering 9 kHz to 3 GHz, purpose-built for signal monitoring, EMI diagnostics, and wireless communications development. Its compact form factor suits field deployment and lab environments alike, delivering measurement accuracy and sensitivity across a wide dynamic range.

Technical Specifications

• Overall range: 9 kHz to 3 GHz


• AC-coupled operation: 100 kHz to 3 GHz


• With preamp enabled: 1 MHz to 3.0 GHz Resolution & Video Bandwidth


• RBW (-3 dB): 10 Hz to 1 MHz in 1-3-10 sequence steps


• RBW accuracy: ±5% nominal


• VBW (-3 dB): 1 Hz to 1 MHz in 1-3-10 sequence steps Amplitude Measurement Performance


• Displayed average noise level (DANL) ranges from -90 dBm (9–100 kHz) to -148 dBm (10–500 MHz with preamp on)


• Measurement range: +30 dBm to DANL (10 MHz–3 GHz, preamp off)


• Input attenuator: 0 to 70 dB in 1 dB steps


• Overall amplitude accuracy: ±1.5 dB (typical ±0.5 dB)


• Level measurement uncertainty: ±1 dB (1–2 GHz), ±1.3 dB (2–3 GHz) Maximum Input Protection


• Average continuous power: ≤ +37 dBm with ≥10 dB attenuation (3 minutes)


• Peak pulse power: ≤ +50 dBm (< 10 μs pulse width, < 1% duty cycle, ≥40 dB attenuation)


• DC voltage: 50 VDC maximum Frequency Response Flatness


• 200 kHz–2.0 GHz: ±0.5 dB (preamp off, 10 dB attenuation)


• 2.0–3.0 GHz: ±0.7 dB (preamp off, 10 dB attenuation)


• 1 MHz–2.0 GHz: ±0.6 dB (preamp on, 10 dB attenuation)

Key Features

• Selectable resolution bandwidth (10 Hz to 1 MHz) for detailed signal analysis


• Dual-mode amplification: switchable preamp for low-level signal detection


• Attenuation switching uncertainty of ±0.4 dB ensures repeatable measurements


• Absolute amplitude accuracy: ±0.3 dB (preamp off), ±0.4 dB (preamp on)

Typical Applications

• Wireless communications signal analysis and compliance testing


• EMI/RFI troubleshooting in development and manufacturing


• Field RF signal monitoring and spectrum surveillance


• General-purpose bench and portable RF measurements