Keysight N9321C Basic Spectrum Analyzer (BSA)

Specifications

• Frequency: 9 kHz to 4 GHz
• DANL at 1 GHz: -152 dBm
• Max Analysis Bandwidth: 1 MHz
• Phase Noise at 1 GHz (10 kHz offset): -90 dBc/Hz
• LAN, USB interface / GPIB (optional G01)

Features

• Up to 18 user-definable softkeys for fast access to customized setups
• “Auto-tune” captures the signal and displays it on screen automatically
• Window limit enables fast Pass/Fail testing
• SCPI commands compatible with Keysight ESA and X-series

N9321C Basic Spectrum Analyzer Overview

The Keysight N9321C Basic Spectrum Analyzer is your go-to tool for performance and superior reliability. Designed with engineers, technicians, and educators in mind, this rugged, easy-to-use instrument covers all the bases for everyday RF measurements—making it a smart, cost-effective choice for a wide range of applications from manufacturing to teaching students in the classroom.

Its frequency covers from 9 kHz to 4 GHz giving you the range needed to tackle tasks in wireless communication, EMI diagnostics, and general-purpose RF testing. With a resolution bandwidth of 10 Hz - 3 MHz and a minimum 2 ms non-zero span sweep speed, the N9321C captures detailed data that helps you get accurate results, fast. Whether you're analyzing interference, tuning filters, or verifying designs, you can trust this analyzer to deliver clear, actionable insights. Findings can be easily reviewed through its intuitive interface, which features a vibrant 6.5-inch color display and a front panel designed to keep essential controls within easy reach.

The analyzer supports multiple measurement options, including AM/FM modulation analysis, ASK/FSK decoding, and even distance-to-fault capabilities for cable diagnostics. With the optional tracking generator and reflection measurement kit, it becomes a versatile tool for scalar network analysis—ideal for checking filters, amplifiers, and antennas.

Thanks to its portable 7.9 kg (17.4 lbs) design and robust construction, the N9321C can handle the rigors of both bench-top use and field deployments. It’s engineered to meet rigorous environmental testing standards for shock, vibration, temperature, and humidity.

Front Panel Features

1. 3U height (132.5 mm, 5.2 inches)
2. Frequently used measurement parameters
3. Frequently-used functions to tune for the best view of spectrum (marker, peak search, resolution bandwidth/video bandwidth, trace)
4. Factory preset or User preset sets instrument parameters back to a known desired status
5. Function button
6. One-button screen copy, by pressing [Shift] and [Save]
7. RF input port, 50 Ω
8. Tracking generator opt. (built-in VSWR bridge on N9321C & N9322C)

Rear Panel Features

1. Standard USB port and LAN port for remote control purpose
2. Security Kensington lock
3. Upgradable toward a GPIB interface (opt. G01)
4. Upgradable toward a precision frequency reference (opt. PFR),
   to achieve ±0.1ppm annual aging rate

N932xC BSA-C Series Features

Achieve higher productivity on a smaller budget with the N932xC BSA-C series. This series of 4 models features proven test efficiency, best-in-class usability, and the flexibility to adapt to new requirements. N932xC extends the frequency range from RF to microwave in one code set based on a proven reliable platform. It addresses the evolving general purpose need such as EMI troubleshooting and test, radio link monitoring, wireless IoT device testing and education applications. These are just a few more of the reasons for using this series:

• Support AM/FM, ASK/FSK demodulation analysis suites for IoT transmitter characterization
• Implement up to 20 pre-defined measurements automatically and reduce test setup time by 95% with the task planner feature
• Supports Keysight U2000 Series, U2020 and U2042/44 X-Series USB peak and average power sensor
• Achieve straightforward and efficient operation with marker demodulation, one-button optimization, and user-definable soft keys

What's in the Box

• N9321C BSA spectrum analyzer
• Calibration certificate
• USB cable
• N-BNC adapter
• BNC cable
• Country-specific power cord