Press Releases

US Digital Introduces New High Resolution E4T Optical Encoders at SPS IPC Drives 2016

Nuremburg, Germany - November 22, 2016 - US Digital, a US manufacturer of quality motion control since 1980, today announced the addition of 400 and 500 cycles per revolution (CPR) resolutions to its existing E4T line of miniature optical encoders. Specifically designed for robotics, medical and other industrial automation applications, the new E4Ts deliver position and velocity feedback, while fitting National Electrical Manufacturers Association (NEMA) motors as small as size eight.

Utilizing state of the art transmissive optical sensing technology, the newly announced 400 and 500 CPR resolutions represent up to a 38% increase in available CPR and now support applications requiring up to 2,000 pulses per revolution. This substantial increase in resolution was achieved without any compromise to package form factor, electrical characteristics or output signal robustness. The E4T line of encoders is available in both single ended and differential signal outputs for applications where noise immunity is critical. Moreover, the 400 and 500 CPR options retain the E4T's simple and efficient, push-on hub disk assembly process, helping US Digital customers keep installation time, assembly cost and complexity to a minimum.

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ISO 9001:2015 logo

US Digital® announces its ISO 9001 standards certification renewal from ISO 9001:2008 to ISO 9001:2015. As part of the ISO certification process, US Digital® engaged in a rigorous audit of its business and manufacturing processes, as well as product quality requirements. These standards are followed throughout the company including areas such as customer service, design, manufacturing, assembly and distribution of motion control products and accessories.

Additionally, as part of the ISO certification requirements, US Digital® maintains an ISO compliant Quality Management System ensuring our commitment to customer satisfaction and strengthened performance through constant process improvement.

The International Standards Organization (ISO) reviews its standards every five years in order to remain current in an ever-changing business environment. ISO 9001 sets quality management standards and guides businesses and organizations to ensure their products and services consistently meet customer's requirements and that commitment to quality is continually improving. ISO 9001:2015 is the most relevant certification to date, replacing the previous ISO 9001:2008 standards.

ISO 9001:2015 Certificate

Introducing US Digital®'s New Line of Miniature Optical Encoders

Vancouver, Washington, USA, March 18, 2015 - US Digital® is pleased to announce our full new line of E4T's and S4T's available up to 360 CPR are available for purchase. These products are designed to replace the E4P and S4 products and deliver a marked performance increase over similar encoder models.

The E4T and S4T utilize state of the art transmissive optical sensing technology, and incorporate US Digital®'s own proprietary OptoASIC. Assembly of the E4T is simple and efficient and retains the previous E4P's form factor.

E4T OEM Miniature Optical Kit Encoder

  • Mechanically and Electrically interchangeable with E4P
  • Improved Quadrature Signal Performance
  • 100 kHz frequency response
  • Transmissive Optical Design
  • Collet style push on optical disk design *Patent Pending
  • Simple & Efficient Assembly Process

S4T Miniature Optical Shaft Encoder

  • Mechanically and Electrically interchangeable with S4
  • Improved Quadrature Signal Performance
  • 100 kHz frequency response
  • Transmissive Optical Design

As with all of our products, the E4T and S4T are designed and manufactured in our Vancouver, Washington USA facility and will be available for purchase today. For additional information about the E4T and S4T, you can visit our Q&A page, call us at 1–800–736–0194 or email us at

US Digital® Recognized for Outstanding Business Achievements

US Digital® Earns Microsoft Dynamics® Dynamic Business: Small and Medium Business Award

Vancouver, Washington, USA, February 12, 2014 – US Digital® Corporation was recognized by Microsoft® with the 2014 Dynamic Business: Small and Medium Business Award as part of the Microsoft Dynamics Customer Excellence Awards program. They will be honored by Microsoft executives at an awards luncheon on Wednesday, March 5, at Convergence 2014 Atlanta, the premier Microsoft Dynamics user conference.

The 2014 Customer Excellence Awards, which are presented in 17 categories, recognize and celebrate Microsoft Dynamics customers that have achieved notable accomplishments using their Microsoft Dynamics solutions.

Established in 1997, the Customer Excellence Awards are awarded each year at the Convergence user conference in the United States. Microsoft Dynamics is a line of financial, customer relationship and supply chain management solutions that help businesses work more effectively.

Learn more about US Digital®'s award-winning implementation of Microsoft® Dynamics here.

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Products mentioned in this release are registered trademarks or trademarks of their respective holders.

US Digital® Releases the EM2 High Resolution Encoder Module

Vancouver, Washington, USA, November 26, 2013 – US Digital® has raised the performance bar of their popular encoder module series by releasing a next generation high resolution encoder module – the EM2 – capable of resolutions of up to 5000 CPR in a 1-inch diameter disk. Previously, a maximum resolution of 1250 CPR was available in a 1-inch diameter disk format utilizing the very popular EM1 encoder module.

The higher resolutions offered by the new EM2 encoder module now allow many of US Digital®’s products such as the E5, E2, S5, S1, H1 and H5 to extend resolutions beyond the current 1250 CPR limit up to 5000 CPR.

For more information visit for additional details and to download a comprehensive EM2/EM1 comparison chart.