Active link counterpart that acts as a master or a slave in radio base station systems. Unlimited control over stimulus and full visibility into captured data bring your functional verification to a whole new level.



Link device with the ability to mimic any base station component, master or slave


X-STEP™ Actor is an active link device used in CPRI™, OBSAI RP3(-01), and 10 Gigabit Ethernet interfaces for mimicking either the baseband unit or a radio head in a functional test setup. In the antenna interface of a remote radio head, X-STEP™ Actor can mimic JESD204B ADC/DAC devices, sending antenna stimulus into the radio head or capturing antenna data from the radio for, e.g., radio performance analysis. X-STEP™ Actor operates on physical and data link layers and provides bit-accurate visibility into stimulus and captured data with physical and framing error injection and detection capabilities. X-STEP™ Actor provides file-based access to all channels of the interface protocol, allowing control & management payloads and individual antenna-carriers to be generated and post-processed through algorithmic models and 3rd party tools.








Active link counterpart with live control channel support for reactive testing and infinite tracing of control messages. Perform and monitor base station configuration sequences from your PC.



Link device with the special ability to relay live control channel traffic between PC and DUT

X-STEP™ Live Actor is an extension to the X-STEP™ Actor product to introduce live injection and extraction of control and management (C&M) channel packets. X-STEP™ Live Actor operates as a bridge between customer’s local area network and baseband unit or a radio head, forwarding control packets from a computer in the local area network to CPRI™ and OBSAI RP3(-01) links. In the opposite direction, X-STEP™ Live Actor detects control packets in CPRI™ and OBSAI RP3(-01) and forwards them to the network. This enables reactive testing of control channels between a baseband unit and a radio head as the base station control software can run on a standard PC and interface with the design under test via CPRI™ or OBSAI RP3(-01) link(s). Furthermore, the Live Actor feature allows infinite tracing of control packets with 3rd party network analyzer tools, such as Wireshark.









Transparent link monitor with sophisticated capture triggering capabilities, full visibility, and thorough protocol analysis. By far the most efficient way of analyzing and solving link problems.



Bit-accurate traffic analyzer and data extractor with a transparent, parallel connection to a link

X-STEP™ Sniffer is a transparent link monitor with the ability to capture several seconds of link traffic simultaneously from up to 4 fibers for thorough physical and data link layer analysis. X-STEP™ Sniffer supports CPRI™, OBSAI RP3(-01), and 10 Gigabit Ethernet interfaces and connects to monitored fibers via passive fiber-optic splitters. The analysis features of the X-STEP™ Sniffer include full error checking, detailed protocol-level reporting, and control/antenna data extraction into dedicated payload files for offline analysis and post-processing. Extensive triggering capabilities enable precise data captures around physical, data link, and application layer problems, making X-STEP™ Sniffer the ideal tool for diagnosing and solving system-level issues in radio base stations. To ease payload extraction, X-STEP™ Sniffer supports control channel auto-detection and visualized antenna-carrier mappings with IQ visualization capabilities.









Link middleman for physical layer verification. Model delay from greater connection distances and inject physical errors to test the limits of your radio base station system.



Delay and physical error injection tool operating in series with any fiber-optic link

X-STEP™ Intruder is a physical-layer latency and error injection tool used for modeling real-life cable connection distances and signal degradation to test the robustness of a radio base station system. X-STEP™ Intruder buffers and delays link traffic from 10 µs up to few seconds at one microsecond granularity, where 1 µs corresponds to approx. 204 meters (670 ft) in fiber-optic cable length. Optionally, the Intruder system can also inject pseudo-random physical layer errors, i.e., line code violations, in the delayed traffic according to desired bit/error ratio (BER) target. For BER modeling, X-STEP™ Intruder supports ascending and sweeping modes where the effective BER slowly increments from zero to the target value or sweeps between zero and target BER during a given time period. All Intruder features can be controlled through an easy-to-use GUI or via test automation scripts.









UVM based Verification IP for HW simulation and emulation environments





System Verilog
UVM based
Verification IP
for all major
HW simulators




X-STEP VIPs provide the same functionality than X-STEP Actor to be used in the beginning of the product process. The supported protocols are CPRI, OBSAI RP3 and JESD204. VIPs are designed and tested with major EDA vendors simulators and have three parts: UVM connection to TB with monitors, System Verilog BFM with example TBs and the C-code core, the same that is used in all X-STEP products. X-STEP VIPs gives the user a good starting point in their system validation as all tests are directly reusable with X-STEP Actor in later phases of the project. 









- 8 SFP+ sockets, 1..8 lanes, 4 links
- Line bit rates from 600 Mbps to 12.5Gbps
- All Base Station protocols available
- CPRI™, OBSAI/RP3, JESD204 and 10G Ethernet
- Dimensions: 180 x 100 x 270 mm
- Weight: 3.6 kg





Same protocols and functionality available as in DRT8

- 1..4 lanes, 1 link from 10 kHz up to 600 Mbps
- FMC, MTCC, Mictor, SMA connectors; others available by request
- Serial and parallel connections
- DNRT4 adapts its speed to a clock reference from a slow prototype