Keysight N9324C Basic Spectrum Analyzer 1 MHz – 20 GHz

The Keysight N9324C Basic Spectrum Analyzer delivers RF spectrum analysis, signal monitoring, and interference detection across 1 MHz to 20 GHz. This general-purpose instrument provides essential measurement capabilities with 1 Hz frequency resolution, dynamic range up to 154 dB (with preamp), and displayed average noise level of -144 dBm typical at 1 GHz. Built for test efficiency and usability, it supports evolving RF measurement requirements.

Technical Specifications

• Frequency Range: 1 MHz to 20 GHz


• Frequency Resolution: 1 Hz


• Frequency Span: 0 Hz (zero span), 100 Hz to 20 GHz


• Frequency Reference Aging Rate: ±1 × 10⁻⁷/Year (with Option PFR)


• Frequency Reference Temperature Stability (5°C to 45°C): ±5 × 10⁻⁸ (with Option PFR)


• Frequency Readout Accuracy: ±(0.22% × span + span/(sweep point −1)) Amplitude Characteristics


• Displayed Average Noise Level at 1 GHz: -144 dBm typical (-154 dBm with preamp)


• Measurement Range: -144 dBm to +10 dBm (1 MHz–500 MHz); -144 dBm to +20 dBm (500 MHz–20 GHz)


• Third-Order Intercept at 1 GHz: +11 dBm, +9 dBm, or +15 dBm


• Absolute Amplitude Accuracy: ±0.7 dB typical


• Amplitude Accuracy (1 MHz–7 GHz): ±1.3 dB typical


• Amplitude Accuracy (7–18 GHz): ±1.6 dB typical


• Amplitude Accuracy (18–20 GHz): ±1.8 dB typical


• Input Attenuator Range: 0 to 50 dB in 5 dB steps


• Maximum Input Power: +30 dBm (with ≥20 dB attenuation)


• DC Input Voltage: ±50 VDC maximum


• Marker Level Readout Resolution: 0.01 dB Resolution and Bandwidth


• Resolution Bandwidth Range: 10 Hz to 3 MHz (1-3-10 sequence)


• RBW Accuracy: ±5% nominal


• Resolution Filter Shape Factor: 100 Hz) Triggering & Modulation Analysis


• Triggering Modes: Free run, video, external, RF burst (option)


• AM/FM Modulation Analysis available (Option AMA), 10 MHz to 20 GHz


• Modulation Rate (AM): 20 Hz to 100 kHz


• Carrier Power Accuracy (<7 GHz): ±1.5 dB nominal


• Carrier Power Accuracy (7–18 GHz): ±1.8 dB nominal

Key Features

• 1 Hz frequency resolution across full 1 MHz–20 GHz range


• Up to 154 dB dynamic range with optional preamplifier


• Zero-span capability for time-domain signal monitoring


• Input protection to ±50 VDC


• Multiple level display formats including dBm, dBmV, dBμV, watts, volts, and EMF units


• Flexible triggering options for diverse measurement scenarios

Typical Applications

• RF interference detection and characterization


• Signal monitoring and spectral occupancy analysis


• Component and subsystem verification


• Educational laboratory measurements