US Digital expands its miniature optical encoder line

US Digital introduced the new E8T miniature optical encoder at ATX West 2017. Combining small form factor and resolutions up to 720 CPR, the E8T is well suited for medical and other space sensitive applications that require reliable position and velocity feedback. The E8T’s small package footprint fits motors as small as NEMA size 11 with more than 40% reduction in package height compared to other commercially available solutions.

Using US Digital’s proprietary OPTO-ASIC technology, the E8T supports up to 2,880 pulses per revolution with excellent repeatability. The E8T is available in over 3,240 different configurations and features either single-ended or differential signal outputs. Moreover, the E8T features a simple and secure, push-on hub disk design and a high-retention connector for quick, easy and reliable installation that keeps assembly cost and complexity to a minimum.

Other product features include:

  • 9 resolutions up to 720 CPR
  • 1.120 in. / 28.45 mm package outside diameter
  • 0.460 in. / 11.68 mm package height
  • Fits NEMA 11, 14 and 17 motors
  • 100 kHz frequency response

“Whether its portable technology or diagnostic equipment destined for the laboratory floor, today’s medical applications face increasing pressure to become smaller and lighter without compromising functionality,” said Donna Peterson, Vice President of Marketing and Sales at US Digital. “The E8T’s small, low profile package and available resolutions make it uniquely positioned to help address these requirements while delivering excellent value and reliability relative to alternative motion control solutions.”

Sample and production quantities of E8T are now available. To learn more about the E8T product line, or for complete technical specifications, including mechanical drawings, visit




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