Adjusting Tracking Errors - Scanlab RTC6 PCIe Board Installation And Operation Manual

set_offset_xyz or set_offset_xyz_list, an
• By
offset can be defined for the z coordinate. In
addition, set_defocus
used for defining an offset to the calculated focal
length, which then appropriately affect the z
output value (in the direction opposite to the
offset).
• During a marking process, the scan system focal
length is continuously readjusted. During
execution of a Jump Command
readjustment can be switched off. With
DirectMove3D
= 1 in set_delay_mode
set_delay_mode_list, the z output value is
directly (linearly) taken to its final value during
the jump.
RTC6 boards
Doc. Rev. 1.0.21 en-US
8 Advanced Functions for Scan Head Control and Laser Control
or set_defocus_list can be
(or goto_xyz) this
or

Adjusting Tracking Errors

If the xy scan head and the
unit of a 3D scan system have different
Tracking Errors, set_timelag_compensation
used to delay the output of the faster component to
that of the slower component.
The laser control signal output is synchronized with
the slower component. This allows, for example,
Sky Writing with 3D commands without permanent
defocusing.
In case of a SCANahead System, the PreviewTime
parameter from set_scanahead_params
automatically used as "Tracking
Dynamic Focusing Unit
can be
is
Error".
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