PBM 3960/1
Time when motor is in
a compromise
position.
Time when micro
position is correct.
Write
signal.
Motor
position.
Writing to
channel 1.
Writing to
channel 2.
Time
Ideal data = desired position
Write time = incorrect position
Useful time = correct
position
Double pulse write signal
Actual data = true position
Normal resolution
Figure 11. Double pulse programming, in- and output signals.
Time when motor is in
an intermediate
position.
Time when micro
position is almost
correct.
Write
signal.
Motor position. Note
that position is always
a compromise.
Writing to
channel 1.
Writing to
channel 2.
Time
Useful time = compromise position
with equally spaced angles
Useful time = almost
correct position
Single pulse write signal
"Ideal data" = desired
position
Actual data = true position
Note increased resolution
Figure 12. Single pulse programming, in- and output signals.
7
ERICSSON [ ERICSSON ]
