Patent ID: 6876938
Filing Date: 2005-04-05
Classification: G01R

Abstract:
1. A process for providing calibration information for a time measurement system containing a time measurement device interfaced through signal cables to automated testing equipment, said process comprising the steps of: providing multiple copies of a generated signal through multiple cables from said automated testing equipment to said time measurement device, the cables being connected to measurement channels of a time measurement device; measuring at said time measurement device at least one particular transition in each of the multiple copies of the generated signal and determining the relative arrival time of the at least one particular transition on different cables, thereby determining relative skew between the cables; storing the relative skew information; using said skew information to compensate future measurement values; and generating at least one arming signal that is communicated to the time measurement device for arming the time measurement device before it determines the relative arrival time of the at least one particular transition on different cable; and wherein said multiple copies of the generated signal are delayed relative to said at least one arming signal.