The Keysight S5040A Open RAN Studio Player and Capture Appliance is an integrated test instrument that combines signal generation and analysis capabilities for Open RAN (O-RAN) architecture validation. It enables engineers to emulate complex real-world network scenarios and assess performance, interoperability, and standards compliance across O-RAN components, subsystems, and complete systems.
Technical Specifications
Signal Generation
• Modulation schemes: QPSK, 16QAM, 64QAM, 256QAM, and higher-order modulations per O-RAN specifications
• Complex multi-carrier waveform generation with flexible numerologies and bandwidth configurations
• Distributed Unit (DU) and Centralized Unit (CU) function emulation for isolated Radio Unit (RU) testing
• Precise timing and synchronization for O-RAN fronthaul interfaces
Signal Capture and Analysis
• Demodulation and decoding of O-RAN-compliant signals
• Performance metrics extraction including EVM, MER, and spectral purity
• Protocol analysis for fronthaul and midhaul interfaces
• Interference analysis and characterization
– Key Features
• Fronthaul interface emulation and capture supporting eCPRI and CPRI protocols over multiple transport layers
• Midhaul interface simulation and analysis, including F1 interface testing for DU/CU interactions
• Differentiated control plane and user plane traffic handling for comprehensive O-RAN testing
• Optimized for high-throughput data generation and capture under demanding network conditions
• Low-latency signal generation and capture for accurate real-time O-RAN operation emulation
– Typical Applications
• O-RAN Radio Unit component and subsystem validation
• Distributed and Centralized Unit functional testing
• Fronthaul and midhaul interface protocol verification
• Signal quality and performance metrics assessment
• Multi-vendor interoperability validation
– Compatibility & Integration
The S5040A supports industry-standard O-RAN interface specifications and operates within the Open RAN ecosystem framework, enabling integration with DU, CU, and RU implementations from multiple vendors.














