Patent ID: 6854068
Filing Date: 2005-02-08
Classification: H04J,H04L

Abstract:
1. A wander generator having an arbitrary TDEV mask characteristic setting apparatus comprising: wander generation means for generating a clock signal including a wander; and TDEV mask characteristic setting means which is used in said wander generation means to set a TDEV mask characteristic which is belonged to the wander included in the clock signal generated by said wander generation means; said TDEV mask characteristic setting means comprising: a file, in which the TDEV mask data information including the TDEV mask data constituted by connecting a plurality of line segments and a calculation expression for forming said TDEV mask data on a coordinate in which a horizontal axis represents an integral time and a vertical axis represents a characteristic value, are stored in advance; TDEV mask data information readout means for reading out predetermined TDEV mask data information from said file; a display section for displaying the line segment which is represented by said desired TDEV mask data information, which is read out by said TDEV mask data information readout means; an operating section for inputting information for changing at least one of the start point and the characteristic value to the desired value with respect to the line segment to be represented by said desired TDEV mask data information which is displayed on said display section; and a TDEV mask data change section for receiving information inputted by said operating section, changing the TDEV mask data information based on the calculation expression of said TDEV mask data information, which represents the line segment displayed on said display section, and displaying the line segment which is represented by said changed TDEV mask data information on said display section.