Test apparatus for a broadband telecommunication network

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.