L-9517-9563-06-A_Data_sheet_ATOM_en.pdf - 第28页
28 A TOM miniature encoder system Incremental 1 2 channels A and B in quadrature (90° phase shifted) Reference 1 Signal period Resolution A B Z Synchronised pulse Z, duration as resolution. Bi-directionally repeatable . …
27 ATOM miniature encoder system
Voltage at V
X
3.3V (nom)
50% 70% 100%0
0
Signal level
Between 50% and 70% signal level, V
X
is a duty cycle.
Time spent at 3.3V increases with incremental signal level.
At >70% signal level V
X
is nominal 3.3V.
Set-up
During normal operation
Voltage at V
X
Normal operation Normal operationReference
mark
calibration
3.3V
1.65 V
0 V
Start of
calibration
routine
End of
incremental
calibration routine
End of
calibration
routine
Incremental
calibration
>70% signal
During CAL routine
>70% signal
28 ATOM miniature encoder system
Incremental
1
2 channels A and B in quadrature (90° phase shifted)
Reference
1
Signal period
Resolution
A
B
Z
Synchronised pulse Z, duration as resolution.
Bi-directionally repeatable.
2
Digital output signals
Form - Square wave differential line driver to EIA RS422A
All ACi interfaces, Ri digital interfaces, and Ti digital interfaces
1
Inverse signals not shown for clarity.
2
Only calibrated reference mark is bi-directionally repeatable.
29 ATOM miniature encoder system
Set-up signal voltage proportional to incremental signal amplitude.
Set-up (ACi interfaces and Ri digital interfaces)
Set-up
1
(Ti digital interfaces only)
Voltage at X
1
100%0
0
Signal level
1
Set-up signal as shown is not present during calibration routine.
Voltage at X
3.3V (nom)
50% 70% 100%0
0
Signal level
Between 50% and 70% signal level, X is a duty cycle.
Time spent at 3.3V increases with incremental signal level.
At >70% signal level X is nominal 3.3V.