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Avago: Optical Incremental Encoder Modules (HEDT-9000/9100 Series)
Avago: Optical Incremental Encoder Modules (HEDT-9000/9100 Series)
 
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Order #: HEDT-9000-9100


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Avago: High Temperature, 125°C, Two Channel Optical Incremental Encoder Modules (HEDT-9000/9100 Series)

Description

The HEDT-9000 series and the HEDT-9100 series are high performance, low cost, optical incremental encoder modules that operate to 125°C. When used with a codewheel, these modules detects 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 a unique photodetector array, these modules are extremely tolerant to mounting misalignment.

The two channel digital outputs and 5V supply input are accessed through five 0.025 inch square pins located on 0.1 inch centers.

Standard resolutions for the HEDT-9000 are 500 CPR and 1000 CPR for use with a HEDS-6100 codewheel or equivalent. For the HEDT-9100, standard resolutions between 96 CPR and 512 CPR are available for use with a HEDS-5120 codewheel or equivalent.

Standard resolutions between 256 and 2000 counts per revolution are available. Consult local Avago sales representatives for other resolutions

Features

  • High Performance

  • High Resolution

  • Low Cost

  • Easy to Mount

  • No Signal Adjustment Required

  • Insensitive to Radial and Axial Play

  • -40 degrees C to 125 degrees C Operating Temperature

  • Two Channel Quadrature Output

  • TTL Compatible

  • Single 5V Supply


Transmissive Encoders

The Transmissive Encoder is an emitter/detector module. Coupled with a code wheel, this transmissive encoder translates rotary motion of a shaft into digital output. The transmissive encoder contains a single Light Emitting Diode (LED) as its light source. The light is collimated into a parallel beam by means of a single polycarbonate lens located directly over the LED. Opposite the emitter is the integrated detector circuit.

This IC consists of multiple sets of photodetectors and the signal processing circuitry necessary to produce the digital waveforms. The code wheel rotates between the emitter and detector of the transmissive encoder, causing the light beam to be interrupted by the pattern of spaces and bars on the code wheel. The photodiodes which detects these interruptions are arranged in a pattern that corresponds to the radius and design of the code wheel. These detectors are also spaced such that a light period on one pair of detectors corresponds to a dark period on the adjacent pair of detectors. Avago offers an extensive range of transmissive encoders to meet the different needs of a wide variety of applications.


Model No.: HEDT-9000, HEDT-9100

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