Patent ID: 8669756

Claim:
A test apparatus for a broadband telecommunication network, comprising: a DC power source having a first electrical terminal and a second electrical terminal; and a DC feeding bridge having a pair of inputs coupled to the first and second electrical terminals of the DC power source, the DC feeding bridge further comprising: a first circuit section having a first transformer-coupled impedance comprising at least one transformer connected in parallel to a first impedance; a second circuit section having a second transformer-coupled impedance comprising at least one transformer connected in parallel to a second impedance; a third circuit section having a third transformer-coupled impedance comprising at least one transformer connected in parallel to a third impedance, wherein primary windings of each of the at least one transformers are coupled together in series; and a pair of outputs provided with the third circuit section that are adapted for establishing electrical contact with a device under test (DUT) configured to be disposed on a pair of transmission lines of the broadband telecommunication network.