Patent ID: 8552739

Claim:
A method of correcting time-domain reflectometers (TDR), wherein each TDR has a plurality of channels, the method comprising: (a) connecting two channels of a TDR to a corrector using cables; (b) causing each of the two channels to transmit pulses; (c) zeroing parameters Step Deskew and Channel Deskew of the two channels; (d) measuring a first resistance value of one of the two channels, and simultaneously, measuring a second resistance value of the other one of the two channels; (e) adjusting the value of the parameter Step Deskew of one of the two channels upon the condition that a difference between the first resistance value and the second resistance value is beyond a first predetermined tolerance; (f) repeating steps (d) and (e) until the difference between the first resistance value and the second resistance value is within the first predetermined tolerance; (g) sending a message containing notification of the disconnection of the cables and the corrector; (h) measuring a first time of achieving a resistance value of one of the two channels, and measuring a second time of achieving the same resistance value, after the cables and the corrector have been disconnected; (i) adjusting the value of the parameter Channel Deskew of one of the two channels upon the condition that a difference between the first time and the second time is beyond a second predetermined tolerance; (j) repeating steps (h) and (i) until the difference between the first time and the second time is within the second predetermined tolerance; (k) repeating steps from (a) to (j) until none of the TDR channels needs to be corrected; and (l) displaying the adjusted values of the parameters Step Deskew and Channel Deskew of all the channels through a display unit.