Keysight N9323C Basic Spectrum Analyzer, 1 MHz to 13.6GHz

The Keysight N9323C Basic Spectrum Analyzer is a general-purpose RF measurement instrument spanning 1 MHz to 13.6 GHz. It delivers rapid spectrum analysis with swept and FFT modes, supporting frequency spans from 0 Hz (zero span) to 13.6 GHz. Resolution bandwidth ranges from 10 Hz to 3 MHz in 1-3-10 sequence, with typical RBW accuracy of ±5%.

The analyzer achieves a displayed average noise level of −144 dBm at 1 GHz, enabling sensitive measurements across demanding test scenarios.

Technical Specifications

• Frequency range: 1 MHz to 13.6 GHz


• Frequency span: 0 Hz to 13.6 GHz


• Frequency span accuracy: ±(0.22% × span + span/(sweep point −1))


• Sweep time: 2 ms to 1000 s (span >100 Hz)


• Resolution bandwidth: 10 Hz to 3 MHz in 1-3-10 sequence


• RBW accuracy: ±5% nominal


• Resolution filter shape factor: <5:1 nominal (60 dB/3 dB bandwidth ratio) Amplitude and Dynamic Range


• DANL @ 1 GHz: −144 dBm typical


• Typical DANL: −154 dBm/Hz @ 1 GHz


• Maximum DANL: −162 dBm


• Measurement range (1 MHz–500 MHz): DANL to +10 dBm (preamp off)


• Measurement range (500 MHz–13.6 GHz): DANL to +20 dBm (preamp off)


• Absolute amplitude accuracy: ±0.3 dB at 50 MHz (typical)


• Overall amplitude accuracy: ±1.3 dB (1 MHz–7 GHz)


• Input attenuator: 0 to 50 dB in 5 dB steps


• Input attenuation switching uncertainty: ±0.2 dB typical (at 50 MHz)


• RBW switching uncertainty: +0.1 dB typical


• Third order intercept: +11 dBm to +15 dBm across bands


• Marker level readout resolution: 0.01 dB Phase Noise


• Phase noise @ 1 GHz (10 kHz offset): −92 dBc/Hz


• Phase noise @ 500 MHz (10 kHz offset): −92 dBc/Hz


• Phase noise @ 1 MHz offset: −119 dBc/Hz Input Protection and Triggering


• Maximum damage level: +30 dBm average continuous (input attenuator ≥20 dB)


• Maximum damage level: +33 dBm or ±50 VDC


• DC voltage maximum: ±50 VDC


• Trigger types: RF Burst, External, Video


• Level display units: dBm, dBmV, dBμV, W, V, and EMF variants

Key Features

• Compact spectrum analysis from 1 MHz to 13.6 GHz


• Configurable resolution bandwidth and sweep parameters


• Multiple trigger modes for automated measurements


• Extensive amplitude display formats


• Input protection to ±50 VDC and +33 dBm continuous power

Typical Applications

• EMI troubleshooting and compliance testing


• Spectrum monitoring and signal detection


• Radio link monitoring


• Wireless IoT device characterization


• Educational RF and microwave laboratories

Compatibility & Integration The N9323C accepts RF signals via standard connector with programmable attenuation, external triggering, and video trigger modes for flexible test automation.