The E21C and E21D 5-V, two- and three-channel optical incremental encoders are available in many configurations. This modular encoder package comes in a compact 21- by 8-mm size with alternate mounting arrangements. Connections are available in a locking radial or optional axial connector in addition to standard radial. The encoders operate from -20 to 85 °C and weigh 2.5 g. The E21C encoder has resolutions of 120, 125, 128, 200, 250, 256, 300 and 360 CPR. The E21D has resolutions of 500, 512, 1000, 1024, 1600, 2000, 2048, 3200, 4000, 4096, 6400, 8000 or 8192. Available in kit form, the encoders adapt to many Pittman motors.
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