The Ero 2000 series encoder offers high interpolation rates as well as thermal position stability. The series includes a scanning unit and two types of scales. The scanning heads come with a 1-V peak-to-peak analog interface. Position noise is measured to ± 0.04 in (arc seconds). The two types of scales contain a 20-micron graduation with a full circle and segment of a circle. For the circular scales, a disk with 2,500 lines per revolution with a 19-mm outside diameter is available. The segment-shaped scale has the same 20-micron graduation but is lighter as portions of the glass disk have been removed to shape the scale into its rectangular form.
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