About the Siglent SSA3021X PLUS

In summary, the Siglent SSA3021X PLUS is a benchtop spectrum analyzer covering 9 kHz to 2.1 GHz designed for general RF spectrum measurement, educational use, production test, and field RF work. Per the datasheet, the SSA3021X PLUS provides resolution bandwidths from 1 Hz to 3 MHz (10 MHz EMI), -161 dBm typical displayed average noise level with the preamplifier on, -98 dBc/Hz typical SSB phase noise at 1 GHz / 10 kHz offset, and a 10.1 inch capacitive multi-touch WXGA display. Standard interfaces include LAN, USB Device, USB Host, and HDMI; SCPI / LabVIEW / IVI remote control is supported.

What is the Siglent SSA3021X PLUS used for?

The SSA3021X PLUS is used for general RF spectrum measurement — channel power, ACPR, occupied bandwidth, harmonic distortion, and third-order intercept — plus pre-compliance EMI sweeps and basic AM / FM / ASK / FSK modulation analysis. Per the datasheet, target applications include broadcast and CATV monitoring, cellular site work, IoT and ISM-band development, WLAN and Bluetooth surveys, RF education, and bench-level production verification.

How does the SSA3021X PLUS compare to other benchtop analyzers?

The SSA3021X PLUS is positioned as Siglent's value-tier general-purpose RF spectrum analyzer. Per the manufacturer datasheet, it provides identical measurement vocabulary — channel power, ACPR, occupied bandwidth, harmonic distortion, and third-order intercept — to higher-priced premium-tier instruments, at a price point well-suited to education, startups, and bench-level production verification. It is not the right choice when the application requires the lowest available phase noise or the widest available dynamic range; for those applications, a premium-tier instrument is required.

Where does the SSA3021X PLUS fit in an RF lab?

• General-purpose RF spectrum measurement up to 2.1 GHz, including transmitter verification, harmonic checks, and ACPR.
• EMI pre-compliance using CISPR 16-1-1 -6 dB EMI filters (200 Hz, 9 kHz, 120 kHz, 1 MHz) and pre-loaded EN 55022 / FCC Part 15 limit standards (AMK option).
• Basic modulation analysis — AM, FM, ASK, FSK — for digital wireless designs (AMK / EMI option).
• Education and training benches where the 10.1 inch multi-touch screen, HDMI output, and web-browser remote control simplify classroom use.
• Bench-level production verification on RF, IoT, and consumer wireless designs.

Accessories Supplied

Per the manufacturer datasheet, the standard ship kit includes: a Quick Start guide, a region-appropriate AC power cord, and a USB cable.

Core Specifications

Frequency, Reference, and Bandwidth

Amplitude, Level, Phase Noise

Distortion, Sweep, Trigger

Measurements, EMI, and Modulation (options)

Tracking Generator (TG, available on Plus models)

Inputs, Outputs, Remote Control

Display, General, and Power

This webpage was written by a human with an A.I. "Intern", which may contain errors. Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.