Patent ID: 6847213

Claim:
A LAN cabling testing system, comprising: first and second patch cords each terminating at first and second plugs; a hand-held display unit and a hand-held remote unit, each one of said units including means for sending and receiving a wave form of selected frequency to and from the other of said units through said patch cords and a LAN link to be tested; the hand-held display unit including a jack for receiving a plug of one of the patch cords, said jack and plug defining a first mated connector pair; the hand-held remote unit including a jack for receiving a plug of the other of the patch cords, said jack and plug defining a second mated connector pair; phase measuring means for measuring phase in one of the display or remote units; and wherein one of the display unit and remote unit further comprises electronic storage means for storing the scattering, parameters of the patch cords and the mated connector pairs, and calculating means programmed to use the stored scattering parameters to move the phase reference planes to the necessary locations for performing channel link or permanent link testing.