The HEDT-9000 and HEDT-9100 series are high-performance, low-cost, optical incremental encoder modules that operate up to 125°C. When used with a codewheel, these modules detect rotary position. The modules consist of a lensed (LED) source and a detector IC enclosed in a small C-shaped plastic package. Due to a highly collimated light source and unique photodetector array, these modules are extremely tolerant to mounting misalignment. The two-channel digital outputs and the single 5V supply input are accessed through five 0.025-inch square pins located on 0.1-inch centers.
The handbook describes the high‑performance, low‑cost HEDT‑9000 and HEDT‑9100 optical incremental encoder modules that operate from –40 °C to 125 °C. It includes features, mechanical dimensions, electrical specifications, mounting guidelines, and recommended codewheel options.
The document also provides theory of operation, standard resolutions for each series, application notes for automotive use, and ordering information with part options and contact details for Agilent Technologies.