GRL Releases USB4™ Return Loss and Impedance Test Solution for the Keysight ENA 

November 4th, 2020 by Brissa Ortega

Expands GRL’s Suite of USB4™ Electrical Compliance Test Solutions

Granite River Labs’ (GRL) comprehensive suite of USB4™ electrical compliance test solutions now includes GRL-USB4RL-KS Return Loss and Impedance software automation for the Keysight ENA series vector network analyzers (VNAs), including the popular E5071C.

GRL-USB4RL-KS automates USB4 Transmitter and Receiver Differential and Common Mode Return Loss measurements, as well as USB4 Impedance for debugging reference.  It also integrates the USB-IF Electrical Test Tool (ETT) for automated DUT control and maximum efficiency to test USB4 peripherals, hosts and hubs.  GRL-USB4RL-KS also supports Thunderbolt™ 3 and Thunderbolt™ 4, which follow the USB4 physical layer test specification.

GRL’s USB4 solutions now include four software automation tools that may be purchased separately or together:

GRL’s USB4 solutions support testing at 40Gbps and 20Gbps over USB Type-C®, and are compatible with the Wilder Technologies USB4 test fixtures and microcontroller.  The software runs on any Windows 7+ PC or directly on the scope for ultimate flexibility.  Together, these tools provide a comprehensive, flexible and efficient solution for electrical compliance testing and debugging USB4 designs.

For additional information or questions regarding GRL test solutions, including quotes, product demonstrations, software and technical assistance please contact us at

USB4™, USB Type-C®, USB-C® and USB 2.0 Type-C™ are trademarks of USB Implementers Forum.

About Granite River Labs |
The world’s leading Engineering Services and Test Automation Solutions firm for connectivity and charging, GRL helps engineers solve tough design and validation challenges.  GRL began in 2010 with a vision to provide affordable test services to help hardware developers implement digital interface technologies as they become faster, more complex, and more challenging to test. Today, GRL has worked with hundreds of companies supporting the adoption of new and emerging technologies from our worldwide test facilities and R&D centers.