Pen Settings > Edit Pens > Miscellaneous Settings

On this page SkyWriting, defocus and mark flags can be defined for a pen. The property page can be found under Mark → Edit... → Misc.

MiscSettingsPens

Figure 121: Misc Pen Settings

skywriting_example

Figure 122: Example of SkyWriting

break_angle

Figure 123: BreakAngle

SkyWriting: SkyWriting is used to avoid marking while acceleration and deceleration of the mirrors from and to marking speed to achieve very exact marked vertices. Therefore the feature adds a acceleration (StartLength) and a deceleration length (EndLength) to vectors. It is required to find new values for the laser and the scanner delays. The SkyWriting parameters can also be used for black and white bitmaps.

StartLength: Adds an acceleration length to the start of vectors.

EndLength: Adds a deceleration length to the end of vectors.

BreakAngle: Only relevant for PolyLines: SkyWriting is only used if angle a between two successive mark vectors is greater than or equal to the BreakAngle value, see figure 123.

Enable: Enables SkyWriting for marking.

The following settings are only available with a RTC card:

Enable RTC5/6: Enables the hardware-based SkyWriting. You can choose between the Modes. For more information, please consult your RTC manual.

Mode: Choose between the three different modi.

TimeLag: Set up a time lag value. If the TimeLag is set lower than 0.125, SkyWriting will be deactivated. For a Timelag between 0.125 and 0.25, SkyWriting will be activated but a TimeLag of 0µs will be used. For values higher than 0.25 SkyWriting Mode 1 will be activated using the set TimeLag.

LaserOnShift: Set a laser on shift.

All: The All buttons apply the value to all 255 pens.

Defocus: This activates a focus shift on the z-axis. The defocus is only available for USC-cards with an activated Flatlense license. The calculation of the z-shift due to the pen defocus depends on the used setup:

Card-Type	With Optic3D	Without Optic3D
USC-1	According to the Z-Lookup-Table [mm]	Defocus not available
USC-2	According to the Z-Lookup-Table [mm]	[216 bit / Z Field Size][a]
USC-3	According to the Z-Lookup-Table [mm] or [216 bit / Z Field Size][a]/[b]	[216 bit / Z Field Size][a]
RTC-cards[c]	[216 bit / Field Size]	[216 bit / Field Size]

Table 18: Defocus behaviour dependent on activated licenses

[a]: If the feature Z-Dimension is not used, the Z field size is the same as the X/Y field size.

[b]: Which option is used, can be decided in the 3D Extended dialog.

[c]: For RTC cards Defocus requires SCANLAB 3D option.

note

The defocus is saved in the unit bit. This means that the displayed value in mm will change if the Field Size is changed.

If the calculation via [216 bit / Field Size] is used, the z-bit value will increase for positive defocus values.

If the defocus works according to the Z-Lookup-Table, the focus distance will be increased for positive defocus values which is equivalent to a larger distance between scan head and focus point, and to a negative distance in the SAMLight reference. The z-bit value will then change according to the Lookup table.

MarkFlags: Contour or Hatch 1 & 2 can be activated for every pen.

Perforation: Open the perforation dialog.

Apply power changes after jumps: Delays power changes of the laser after the jump.

SCANahead line params (RTC6): If a RTC6 card is set in SAMLight settings following additional group box appears and gets activated if "Use excelliSCAN SCANahead" checkbox is enabled at RTC6 Settings dialog.

CornerScale: Corner sharpness in percent. 100% = sharp corners.

EndScale: Marking accuracy at mark/jump and jump/mark transitions. 100% = straight line ends.

AccScale: Determines the portion of the acceleration time (not: distance traversed) in which the laser is active, in percent. 100% = entire acceleration time. For more information about the 3 RTC6 SCANahead parameters above please consult chapter 3 and Ctrl Command set_scanahead_line_params of RTC6 and excelliSCAN manual.