Datasheet
43
A+
A-
B+
B-
R-
R+
≈4.1V
≈0.2V
R
A
B
100nm
100nm
+
-
+
-
+
-
100nm
10
MINISCALE PLUS Product Overview
Single-ended Signals
Digital Interface Module Output
Differential Signals
Digital output format:
Differentially interpolated digital signals with reference pulse (A, B, R) TTL signal
(RS422).
The digital interface module both processes the raw signal and interpolates the
processed analog signal. The interpolation achieves a resolution of 100 nm.
The digital signal waveform consists of an Aand B signal. The spacing between the
two edges of signals A and B correspond exactly to a distance of 100 nm. The
100 µm increments of the encoder scale are consequently divided into
1000 sections of 100 nm by means of interpolation. The A signal either lags behind
the B signal or occurs before it, depending on the direction of movement.
The reference pulse is as wide as the spacing between the two signal edges of
signals A and B (100 nm).
The edges of the incremental and reference signals are synchronised.
10.2 MINISCALE PLUS Product Overview