http://www.usa.canon.com/cusa/semiconductor/products/encoder_optolectronic_components/laser_rotary_encoder/x_1m?pageKeyCode=writeReviewPage
X-1M
3333349
Features
-
Ultra high resolution at 225,000 pulse per revolution
-
Ultra high precision and accuracy at accumulative error of ±1arc-second or less
-
2 Phase Sine/Cosine Wave Output
-