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SAMLight Manual > Pen Settings > Edit Pens > Bitmap Settings

Bitmap Settings
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PenBitmap

Figure 129: Bitmap Settings Dialog

Bitmap Handling:

This options are only available for the improved bitmap handling which is activated in Settings → System → Extras → Improved Bitmap Handling.

Bitmap Mode: This drop down menu allows to select between grayscale and b&w bitmap modes.

Acceleration Ramp [us]: This parameter adds a start vector for acceleration of the scanner at the beginning of each bitmap line. The length of the vector can be calculated with the marking speed.

Line Shift [us]: This parameter shifts each bitmap line in marking direction. The length of the shift can be calculated with the marking speed.

Power Shift [us]: This parameter shifts the setting of the power modulation (PixelAM mode) in respect to Laser_Gate. The power shift is rounded to integers of 1/frequency. This parameter can be used to compensate delays of the laser to apply a power shift (if the laser takes some time after getting the new power value to actually adapt to the new value). 

Grayscale:

Pixel Hardware Mode: This checkbox should be enabled if using a gray scale bitmap.[a] If the improved bitmap handling is activated, the checkbox is set automatically for grayscale bitmaps and will not be visible any more.

Pen Power as Max Power: Uses the current pen power as maximum power for gray scale bitmap marking. As in all gray scale modes the power map is ignored. The factor is calculated by the current power value divided by the maximum power value.

PixelMap: This should be used to correct non-linearities of the material. For example for some materials there is a minimum laser power for which a marking result can be observed. For general laser dependent non-linearities you can also use the System PixelMap which will adjust the grayscale values after they have been mapped by the Pen PixelMap. For further information please refer to adjusting bitmap grayscale values.

Black / White: If the checkbox Use Vector Delays is activated, the vector delays set in Scanner will be applied. This option will not be visible if the improved bitmap handling is enabled.

 

note

[a] Please note that Pixel Hardware Mode must be disabled for Black&White bitmap marking!