Two Channel Optical Incremental Encoder Modules

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The HEDS-9000 and the HEDS-9100 series are high performance, low cost, optical incremental encoder modules. 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 5 V supply input are accessed through five 0.025 inch square pins located on 0.1 inch centers.

Standard resolutions for the HEDS-9000 are 500 CPR and 1000 CPR for use with a HEDS-6100 codewheel or equivalent.

For the HEDS-9100, standard resolutions between 96 CPR and 512 CPR are available for use with a HEDS-5120 codewheel or equivalent.


  • High Performance
  • High Resolution
  • Low Cost
  • Easy to Mount
  • No Signal Adjustment Required
  • Small Size
  • -40 degrees C to 100 degrees C Operating Temperature
  • Two Channel Quadrature Output
  • TTL Compatible
  • Single 5V Supply

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory Yes
RoHS6 Compliant Y
Motion Type Rotary
Optical Radius (mm) 23.36
Resolution 1024
Resolution (Unit of Measure) CPR
Resolution 1024 CPR