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One of three High Precision Goniometers does have an encoder wheel mounted.
Renishaw Encoder System
Wheel Diameter 150mm, 20 micron period
TONiC T2001-15A Encoder head
TI4000A04A Interpolation Unit, Interpolationfactor 4000 - 5nm Resolution
Stepper Motor Conversion with 1/20 microstepping: 2.880.000 steps for 1 degree
Encoder conversion is 260.000.
|Renishaw Encoder System|
|Encoder Wheel with 20µm scale||Wheel Diameter 150mm|
|TONiC T2001-15A Encoder head|
|TI4000A04A Interpolation Unit||Interpolationfactor 4000 - 5nm Resolution||Angular resolution 66nrad / 0,26µ°|