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SAMLight Manual > Option MOTF > Examples > Rotated scan head

Rotated scan head
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In order to enlarge the marking length possible within the scan field, the scan head can be mounted with an angle between the X-axis of the scan head and the X-axis of the assembly line. In this case, both Channels (Channel 0 and Channel 1) need to be enabled in the software and the channel which is not directly connected to the encoder should use the input from the other channel (activate checkbox "Input from CHx"). To use the maximal possible marking length, the scan head can be rotated 45° in respect to the moving belt. Then, the MOTF multiplier must be adapted. Due to geometric considerations, the MOTF multiplier needs to be reduced by a factor of √(1/2) in the case of a rotation of 45°.

 

MOTF_RotatedScanHead
Figure 374:  The scan head's coordinate system is rotated in respect to the belt's coordinate system.