... PET)Frame materialAluminum Alloy Calibration patternFour kinds of calibration pattern: 4 points, 5 points, 9 points and 16 points; Connection InterfaceUSB ... RJ45 net cable operating system requiredWindows XP,Vista,Win7hardware requiredCPU Intel, Pentium 4 2.0 GHz ,Memory 1G,Video Memory 64MB,Hard Disk20GB ...