6 Keysight S5040A Open RAN Studio Player and Capture Appliance User’s Guide
S5040A Open RAN Studio Player and Capture Appliance - At a Glance
Designed for LTE and 5G O-RAN Radio Unit (O-RU) testing, Keysight S5040A Open RAN 
Studio Player and Capture Appliance is a Windows® 10 Pro Workstation based operating 
system 1RU server and FPGA hardware accelerated Ethernet acquisition, timing, and 
triggering hardware, which provides powerful, yet easy to use, capabilities to:
• Build O-RAN compliant CUS-plane test vectors.
• Emulate an O-RAN Distributed Unit (O-DU) – to generate the test vectors against a 
Device Under Test (DUT).
• Capture and accurately timestamp the DUT’s responses.
• Perform measurements needed to validate if the O-RU meets standard compliant 
operation and radio performance.
The S5040A Appliance includes powerful O-RAN focused tools to construct, play, 
capture, and measure O-RAN traffic over 10 Gbps / 25 Gbps (fronthaul) Ethernet 
interfaces. Out of the box integration of the U5040B Open RAN Studio software with 
Keysight’s industry leading PathWave Signal Studio and 89600 VSA software enables 
sophisticated 5G signal creation and easy capture, extraction, and export of IQ vectors – 
for advanced modulation analysis of received RF / mmWave signals and radio 
performance. Additionally, when combined with Keysight spectrum analyzers and signal 
sources, the integrated Open RAN Studio solution delivers the most comprehensive cross 
domain, multi-channel RF / mmWave and O-RAN protocol measurements available in 
the industry, for both FR1 and FR2 radios, downlink (DL) and uplink (UL) paths.
Some of the highlights of the S5040A Appliance are:
• High-capacity removable solid state hard drive for fast boot-up, storing setups, and 
saving measurement results.
• USB 3.0 and LAN ports make printing, saving, and sharing data easy.
• VGA and DisplayPort ports on the motherboard I/O panel for displaying the screen on 
a different monitor.
• 64-bit Windows operating system and graphical user interface with easy-to-use 
menus, toolbars, and features. Ability to install other Windows applications other than 
the pre-installed Signal Studio and vector signal analysis (VSA) software.