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Output specifications
Analogue output signals
All ATOM readheads and Ri and Ti analogue interfaces.
Incremental
2 channels V
and V
differential sinusoids in quadrature,
1
2
centred ~ 1.65 V (90 ° phase shifted)
40 / 20 µm
(V
+) − (V
−)
1
1
0°
(V
+) − (V
−)
2
2
Reference
45 °
(V
+) − (V
−)
0
0
360 ° ( nom )
(after CAL)
Differential signals V
+ and V
− centred on ~ 1.65 V
0
0
Set-up
During normal operation
3.3 V (nom)
Voltage at V
X
0
0
50%
Signal level
Between 50% and 70% signal level, V
is a duty cycle.
X
Time spent at 3.3 V increases with incremental signal level.
At > 70% signal level V
is nominal 3.3 V.
X
ATOM linear installation guide
0.7 to 1.35 Vpp with Green LED
indication (readhead) and 120R
termination.
1 Vpp
Bi-directionally repeatable.
Differential pulse V
centred on 45 °.
0
70%
100%
During CAL routine
> 70% signal
3.3 V
1.65 V
Voltage at V
X
0 V
Normal operation
> 70% signal
Reference mark
Incremental
Normal operation
calibration
calibration
Start of
End of
End of
calibration
incremental
calibration
routine
calibration
routine
routine
46
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