S4 MINIATURE OPTICAL SHAFT ENCODER

S4 Product Description

The S4 miniature optical shaft encoder is a non-contacting rotary to digital converter. Useful for position feedback or manual interface, the encoder converts real-time shaft angle, speed, and direction into TTL-compatible quadrature outputs without index. The encoder utilizes a mylar disk, metal shaft, and bushing or bearing. It operates from a single +5VDC supply.

The S4 encoder is available with ball bearings for motion control applications or static drag to feel like a potentiometer for the front-panel manual interface.

The reflective sensor incorporates an LED light source and a monolithic photodetector with signal shaping electronics, providing two-channel bounceless quadrature TTL outputs.

You can connect the S4 by using a high retention 4 conductor snap-in polarized 1.25mm pitch connector. The mating connector is polarized and should attach smoothly to the encoder; do not force. See below for Cables & Connectors.

Please note: On January 16, 2012, US Digital modified the S4 part number. The S4 optical encoder is now offered with a differential output option; thus, we changed the S4 part number to accommodate either the single-ended or differential output options. The S4 part number also has a place holder added for a possible future index option. The index option is currently unavailable, and there is no projected date at which it will be made available. We also removed the current "Power" option for the S4 from the part number. The power option is very rarely selected and therefore is being eliminated from the S4 part number.