Two and Three Channel Optical

The HEDS-5500/5540, HEDS- 5600/5640, and HEDM-5500/ 5600 are high performance, low cost, two and three channel optical incremental encoders.
These encoders emphasize high reliability, high resolution, and
easy assembly.
Each encoder contains a lensed LED source, an integrated circuit
with detectors and output circuitry, and a codewheel which
rotates between the emitter and detector IC. The outputs of the
HEDS-5500/5600 and HEDM- 5500/ 5600 are two square waves
in quadrature. The HEDS-5540 and 5640 also have a third channel
index output in addition to the two channel quadrature. This
index output is a 90 electrical degree, high true index pulse
which is generated once for each full rotation of the codewheel.
The HEDS series utilizes metal codewheels, while the HEDM
series utilizes a film codewheel allowing for resolutions to 1024
CPR. The HEDM series is nont available with a third channel
index.
These encoders may be quickly and easily mounted to a motor.
For larger diameter motors, the HEDM-5600, and HEDS-5600/
5640 feature external mounting ears.
The quadrature signals and the index pulse are accessed through
five 0.025 inch square pins located on 0.1 inch centers.
Standard resolutions between 96 and 1024 counts per revolution
are presently available. Consult local Agilent sales representatives
for other resolutions.