Scanlab RTC 5 PC Interface Board Installation And Operation Manual page 7

7 Basic Functions for Scan Head and Laser Control ........................................................................... 93
7.1 Marking Points, Lines and Arcs ..................................................................................................... 93
7.1.1 Marking with Vector and Arc Commands .......................................................................... 93
Jump Commands .......................................................................................................... 93
Mark Commands .......................................................................................................... 94
Arc Commands ............................................................................................................. 94
Ellipse Commands ........................................................................................................ 94
Para Commands ........................................................................................................... 95
7.1.2 Microsteps ......................................................................................................................... 96
7.1.3 Marking Points ................................................................................................................... 96
7.1.4 Example Code .................................................................................................................... 97
7.2 Delay Settings for Synchronizing Scan Head and Laser Control ..................................................... 99
7.2.1 Laser Delays ....................................................................................................................... 99
LaserOn Delay ............................................................................................................... 99
LaserOff Delay .............................................................................................................. 99
7.2.2 Scanner Delays ................................................................................................................. 100
Jump Delay ................................................................................................................. 100
Variable Jump Delay ................................................................................................... 101
Mark Delay ................................................................................................................. 102
Polygon Delay ............................................................................................................. 103
Variable Polygon Delay ............................................................................................... 104
Customizing the Variable Polygon Delay ..................................................................... 106
7.2.3 Notes on Optimizing the Delays ....................................................................................... 107
Recommended Sequence ........................................................................................... 107
Automatic Delay Adjustments .................................................................................... 107
Optimizing the Delays ................................................................................................ 110
7.2.4 Sky Writing ...................................................................................................................... 113
Mode 1 ....................................................................................................................... 113
Mode 2 ....................................................................................................................... 113
Mode 3 ....................................................................................................................... 114
Synchronization .......................................................................................................... 115
Notes .......................................................................................................................... 117
7.3 Scan Head Control ...................................................................................................................... 118
7.3.1 Reference System ............................................................................................................. 118
7.3.2 Image Field Size and Calibration ...................................................................................... 119
Typical Image Field ..................................................................................................... 119
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RTC 4 Compatibility Mode ......................................................................................... 120
7.3.3 Virtual Image Field ........................................................................................................... 120
7.3.4 Image Field Correction and Correction Tables .................................................................. 120
Field Distortion ........................................................................................................... 120
Field Correction Algorithm ......................................................................................... 121
Activating Image Field Correction ............................................................................... 122
2D and 3D Correction Files ......................................................................................... 122
Loading Correction Tables ........................................................................................... 122
Assigning Loaded Correction Tables ........................................................................... 122
1to1 Correction Tables ................................................................................................ 124
Inverse Tables ............................................................................................................. 124
Correction File Header ................................................................................................ 124
Converting Correction Files ......................................................................................... 125
7.3.5 Output Values to the Scan System ................................................................................... 126
Calculations ................................................................................................................ 126
Value Ranges .............................................................................................................. 126
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RTC 5 PC Interface Board
Rev. 1.9 e
Contents
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