Rohde & Schwarz R&S ZNB20 Vector Network Analyzer

Granite River Labs Adds Rohde & Schwarz R&S ZNB20 Vector Network Analyzer

  • After recently acquiring the R&S RTP164 oscilloscope, Granite River Labs (GRL) has added to its test solutions with a vector network analyzer from Rohde & Schwarz’s R&S ZNB20 series.
  • The GRL lab, located in Germany, has thus expanded its range of compliance testing services for high-speed digital transmission technologies such as automotive Ethernet or USB.

Granite River Labs is a compliance testing and certification center for high-speed digital designs, cables, connectors and interconnects. It provides compliance testing and certification services, as well as debugging consulting to its customers. Its European test center, located in Karlsruhe, Germany, opened in December 2021. It supports technologies such as automotive Ethernet (up to 1000BASE-T1 and 2.5G/5G/10GBASE-T1) and USB 2.0 and USB 3.2, as well as HDMI, DisplayPort, MIPI, DDR, etc.

GRL has added the R&S ZNB20 vector network analyzer (VNA) from Rohde & Schwarz to the test equipment resources of their test lab. With this step, the lab’s range of industry services is being extended to VNA-based measurements for verification, debugging and compliance tests of cable assemblies and connectors for Automotive Ethernet, Automotive SerDes Alliance, USB, HDMI, and many other standards.

Besides that, GRL can provide customer services for test fixture characterization and de-embedding in high-speed digital and RF applications. The R&S ZNB20 also complements the range of offered interface tests based on the R&S RTP164 high-performance oscilloscope with additional tests like return loss and mode conversion measurements as required in host / interface testing.

The R&S ZNB20 provides tools for test fixture characterization and deembedding. It offers a wide range of measurement results, both in frequency and in time domain, also including transmission line impedance, signal rise time and skew as well as eye diagram and automated mask testing. In combination with the R&S ZNrun compliance automation software, it automates the complete test process from data collection, postprocessing and test report generation.

The R&S RTP is based on a real-time signal processing architecture and provides a tool set for verification and debug, including real-time de-embedding, real-time eye diagram, high-speed serial pattern trigger and protocol decoding, as well as an jitter and noise separation. Utilizing the R&S ScopeSuite Compliance Test framework the instrument executes automated tests for various high-speed digital interfaces with image-based workflow guidance and a comprehensive test report.