RTC6 boards
Doc. Rev. 1.0.21 en-US
7 Basic Functions for Scan Head Control and Laser Control
198
Notes
• “Automatic Laser Control“ does not compensate
for an explicit change in mark speed between two
Mark Commands caused by a set_mark_speed
call.
• “Automatic Laser Control“ and Pixel Mode should
not affect the same output port at the same time.
• “Automatic Laser Control“ cannot be combined
with variable laser control via the
McBSP interface (see set_multi_mcbsp_in).
General Notes
• Each individual contribution as well as the total
correction cannot exceed a factor of 4.0
(clipping
(1)
).
• If laser power and/or energy input into the to-be-
processed material is not strictly proportional to
the output values of the selected signal
parameter, then load_auto_laser_control can be
used to load a nonlinearity curve that defines this
(application-specific) relationship, see Section
”Loading and Determining the Nonlinearity
Curve”, page 204.
• In addition, the selected signal parameter can
neither exceed the value range allowed with
set_auto_laser_control (parameter
MinValue
and
MaxValue
) nor the value range allowed for the
respective output port. It is clipped
correspondingly.
• For the laser control signal a corresponding
default value is outputted (see set_port_default
or set_laser_off_default), if:
– Signals for “Laser Active” Operation are
switched off when “Automatic Laser Control“ is
active
– “Automatic Laser Control“ itself is deactivated
If no default value has been explicitly defined, the
permitted maximum value is outputted. As
substitute for the control parameters
HalfPeriod
and
PulseLength
, the parameter
Value
(the 100%
value) from set_auto_laser_control is used.
• Once an “Automatic Laser Control“ has been
switched on with set_auto_laser_control, then
the following can be changed subsequently by
set_auto_laser_params or
set_auto_laser_params_list:
– the signal parameter
– the 100% value
– limit values assigned to it
The
Mode
parameter cannot be changed
subsequently.
(1) < DLL 612: overflow.
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