Output Specifications - Renishaw ATOM Installation Manual

Output specifications

Analogue output signals
All ATOM readheads and Ri and Ti analogue interfaces.
Incremental
2 channels V and V differential sinusoids in quadrature, centred ~ 1.65 V
1 2
(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
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
Set-up
During normal operation
3.3 V (nom)
Voltage at V
X
0
0 50%
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
During CAL routine
> 70% signal
3.3 V
Voltage at V
X
1.65 V
0 V
Normal operation
Start of
calibration
routine
100%
Signal level 70%
> 70% signal
Reference
Incremental Normal operation
mark
calibration
calibration
End of End of
incremental calibration
calibration routine
routine
www.renishaw.com 69