A device enabling the measurement of the transmission power spectrum density of a transceiver in a DSL system

The invention relates to a device enabling the measurement of the transmission power spectrum density of at least one transceiver in a DSL system, said device comprising : - a first connector comprising an input on which a first transceiver is intended to be connected, - a second connector comprising an input on which a second transceiver is intended to be connected, - a line simulator, a first extremity of which being connected to an output of the first connector and a second extremity which being connected to the second connector, - a third connector comprising an input on which a spectrum analyzer is intended to be connected, and an output of which being connected to a first switch, - and an impedance intended to be connected to one of the first or second transceiver, an output of the second connector being connected to a second switch intended to connect, in a first functioning state, the output of the second connector to a second extremity of the line simulator, and in a second functioning state, the output of the second connector to the impedance; and the output of the first connector being connected to the third switch intended to connect, in the second functioning state, the output of the first connector to the output of the third connector.