Imagine you could see every 5G or Wi-Fi problem the moment it appears, instead of waiting for a customer complaint. The Keysight WJ5900A WaveJudge 5G Real-Time Wireless Analyzer lets you do exactly that. It captures wireless signals in real time and shows you the full protocol stack, so you can diagnose issues fast. If you are tired of missed bugs, dropped calls, or unstable Wi-Fi, this tool gives you the visibility you need to fix them before they affect users.
Keysight WJ5900A WaveJudge 5G Real-Time Wireless Analyzer
Network engineers often struggle with hidden interference and hard-to-trace protocol errors. Those problems can cause revenue loss and unhappy customers. The WaveJudge platform solves this by providing unlimited IQ capture, real-time decoding of 5G SA, LTE, Wi-Fi 6/7 and many other standards. With a scalable chassis and modular RF ports, you get a clear, single view of the air-interface and can act on the data instantly.
Key Features
- Frequency range from 500 MHz to 8 GHz, expandable to mmWave.
- Up to 800 MHz channel bandwidth per RF port.
- Unlimited continuous IQ capture.
- 5G SA real-time decoding with support for NR Rel 15-18.
- Full protocol stack visibility: PHY, MAC, RRC, NAS, RLC, PDCP, IP, SDAP.
- Modulation up to 4096-QAM for high-order testing.
- Streaming analytics and advanced trigger options.
- External PC-based GUI with WaveJudge software suite.
- Ethernet and high-speed data links for fast data transfer.
- Modular chassis that can add FR1 or FR2 RF modules as needed.
Specifications
| Model |
Keysight WJ5900A WaveJudge 5G Real-Time Wireless Analyzer |
| Product Type |
Modular real-time wireless signal capture and analysis platform |
| System Architecture |
Scalable chassis-based platform for SJ001A WaveJudge toolset |
| Supported Technologies |
5G NR (Rel 15–18), LTE (Rel 9–16), RedCap, NTN, V2X, eMTC, NB-IoT, WLAN (802.11 a/b/g/n/ac/ax/be/bn) |
| Frequency Range |
~500 MHz to 8 GHz (FR1 + FR2 via modules / conversion up to mmWave variants) |
| Channel Bandwidth |
Up to 800 MHz per RF port |
| RF Ports per Chassis |
2 to 8 scalable ports |
| Capture Time |
Unlimited (continuous IQ capture supported) |
| Real-Time Operation |
5G SA real-time decoding support |
| Protocol Layers |
PHY, MAC, RRC, NAS, RLC, PDCP, IP, SDAP (including ciphered data with keys) |
| Modulation Support |
Up to 4096-QAM (NR dependent) |
| Storage |
SSD-based long-duration IQ capture |
| Processing Features |
Streaming analytics, advanced triggers, real-time decoding |
| Display / UI |
External PC-based GUI (WaveJudge software suite) |
| Interfaces |
Ethernet, high-speed data links (platform dependent) |
| Platform Type |
Modular RF capture + decode + analytics system |
| Compatible Software |
SJ001A WaveJudge Wireless Analyzer Toolset |
| Expansion |
Scalable RF and processing modules (FR1/FR2 support) |
| Key Use Cases |
5G NR troubleshooting, O-RAN testing, Wi-Fi 6/7 validation, V2X/NTN research |
