1 INTRODUCTION
1.1 Benefits
Congratulations on your purchase of the SmarAct METIRIO Encoder. You have acquired a new
and powerful tool for measurements of linear and rotary displacement. The METIRIO is a reflec-
tive optical encoder which is configured to output analog sine and cosine displacement signals.
It can be integrated as OEM component into positioning systems comprising scales to enable a
closed-loop motion control. It is designed to read incremental scales as well as reference marks.
The compact METIRIO readhead is a very small flip-chip package similar to the SON standard with
soldering pads on the bottom side. The METIRIO encoder combines several advantages.
Features
Sub-nanometer resolution,
Most compact encoder of it’s class,
Infrared wavelength (850 nm),
Very low current consumption: 20 mA,
Ultra high vacuum (UHV) compatibility,
Multiple linear, convex and rotary scale options,
Applications
Rotary encoders
Linear encoders
Robots
Linear motors
Precision stages
Galvanometers
1.2 METIRIO Family Overview
This section provides an introduction to the modular METIRIO product family and the variety of
compatible accessories.
1.2.1 Readheads and Encoders
The diagram in figure 1.1 shows the hierarchy of METIRIO encoders. The basic component of any
encoder system is the readhead. Readheads are available in different housing variants. The heart
of every readhead is always the basic OEM component, which is simply called METIRIO Readhead.
It is a flip-chip sensor package. The optical and electrical funcionality is fully integrated in this
readhead. Any further housing variant is based on the METIRIO Readhead. Hence, all technical
specificatoins apart from the external dimensions and the connection pinout are identical for all
variants.
www.smaract.com | Page 5Metirio Encoder User Manual
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