Manufacturer: Sony   Model: SA57 Optical Absolute type feedback scale   Travel: 120mm to 1240mm   Accuracy: +/- 3µm, +/- 5µm   Resolution: 0.1µm , 0.5µm, 1µm   Reference points: 1 point within measuring length (standard is centre position)   Measuring system: Optical, infrared LED   Max response speed: Depends on model (11 to 57.5m/min)   Protection design grade: To IP53   Air purge: Yes   Signal pitch: 80µm   Cable length: 1m head cable   Output type: Absolute signal output by TX serial transmission and incremental A/B phase output signal by differential line driver

A high accuracy feedback scale ideal for positioning machines tools, industrial equipment and hydraulic cylinders High accuracy, medium profile absolute optical encoder with very low interpolation errors due to high precision insertion circuit. Utilises unique stable Moire detection system to minimise the effects of dust and reading errors. Self guided reading head and air purge facility.   Compatibility: Controls requiring absolute position feedback by RS232C (TX / -TX).