Scanlab RTC6 PCIe Board - Page 152

RTC6 boards
Doc. Rev. 1.0.21 en-US
7 Basic Functions for Scan Head Control and Laser Control
152
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EdgeLevel
The “Variable Polygon Delay” becomes quite long
with angles  close to 180°, see Figure 40. This might
lead to burn-in effects in sharp corners of a Polyline.
If an EdgeLevel value > 0 is specified (at
set_delay_mode), the RTC6 PCIe Board switches off
the laser with a LaserOff Delay after EdgeLevel delay
clock cycles at the latest and thus terminates the
current Polyline, see Figure 41.
The next Mark Command starts as usual with the
current “Variable Polygon Delay”.
41
Laser control timing during a Polyline with “Variable Polygon Delay”. An EdgeLevel value has been defined with
set_delay_mode.
43
2
1
1
0
1
Laser
TimeLast Mark
command
in this Polyline
Mark commandMark command
LaserOff
Delay
LaserOn
Delay
LaserOff
Delay
LaserOn
Delay
Legend
1 EdgeLevel .
2 “Variable Mark Delay”, shorter than the specified EdgeLevel value.
3 “Variable Mark Delay”, longer than the specified EdgeLevel value.
The laser is switched off between both Mark Commands.
4 Mark Delay.