Scanlab RTC 5 PC Interface Board, Инструкция по установке и эксплуатации

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RTC
®
5 PC Interface Board
Rev. 1.9 e
8 Advanced Functions for Scan Head and Laser Control
155
innovators for industry
monitoring XY positioning because it’s only
meant for querying a single signal and multiple
calls unavoidably lead to XYZ values across
different points of time.
• With set_trigger , you can simultaneously record
two desired signals via two measurement
channels (with
set_trigger4 four signals via four
measurement channels).
• With transform and get_transform , you can use
the parameter
Code
to specify that values queried
via get_values or set_trigger are to be assigned
to X, Y and Z for backward transformation.
• transform and get_transform also allow specifi-
cation of which partial transformations should be
performed.
• Values queried via get_values , or arbitrary
synthetic values (e.g. measurement points of a
scanned test pattern) can actually be backward
transformed with
transform . During backward
transformation of synthetic values beyond the
forward transformation’s achievable image field
(e.g. when test pattern measurements don’t use
SCANLAB’s reference system, see
page 118 ),
values sometimes will only be calculated via
extrapolation, due to possible range violations or
other errors.
• If the application binarily stores both the
recorded values and the transferred transfor-
mation data (see
get_waveform ), then subse-
quent backward transformation via transform
(not get_transform ) can also be executed offline,
hence without needing to further access a RTC
®
5
board.
• If control_command is used to specify
positioning error rather than actual position as
the to be returned data type by the scan system,
then it isn’t possible to directly compare the origi-
nally defined pattern with the scanned pattern.
But you can check if the scan system correctly
processed the RTC
®
5 board’s output values. This
is particularly useful if backward transformation
of actual values isn’t (fully) possible or when it
can’t be determined if deviations between
backward-transformed actual positions and origi-
nally defined coordinate values are due to scan
system error or clipping during forward transfor-
mation.
8.1.4 Configuring Dynamics Settings
(Tuning)
SCANLAB can optimize the dynamics setting of scan
systems (tuning) to accommodate differing require-
ments of diverse applications regarding the laser
positioning dynamics
–
e.g. to execute vectors or
circular arcs at a constant processing speed (vector
tuning) or to execute jumps of minimized duration
(jump tuning).
SCANLAB’s i DRIVE
®
scan systems can also be
optionally equipped with multiple tunings (i.e. with
several parameter sets or algorithms), thus allowing
user selection of appropriate tunings matched to
each of their various applications. You can select a
tuning via
control_command . For systems equipped
with one or several jump tunings, you can also
activate jump mode (and hereby tuning
autoswitching) for 2D jumps (see
page 156 ).
The default start behavior is for the scan system to
start with its first tuning (number 0) upon power-up
or after a reset.