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Output specifications
Digital output signals
Form – Square wave differential line driver to EIA RS422A
Incremental *
2 channels A and B in quadrature
Signal period
Resolution
A
B
Reference *
Z
* Inverse signals not shown for clarity
Alarm
Line driven (Asynchronous pulse)
(Not available with 'A' cable termination)
>15 ms
Alarm asserted when:
E−
– Signal amplitude <20% or >135%
– Readhead speed too high for reliable operation
or 3-state alarm
Differentially transmitted signals forced open circuit for >15 ms when alarm conditions valid.
ATOM DX
rotary installation guide
(90° phase shifted)
Resolution option
Synchronised pulse Z,
duration as resolution.
Bi-directionally repeatable
†
40 μm ATOM DX only
P (μm)
S (μm)
code
†
T
40
10
D
20
5
G
†
8
2
X
4
1
Z
2
0.5
W
0.8
0.2
Y
0.4
0.1
H
0.2
0.05
M
0.16
0.04
I
0.08
0.02
O
0.04
0.01
Q
0.02
0.005
‡
R
0.01
0.0025
‡
20 μm ATOM DX only
20
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