Method and apparatus for a self-terminating signal path

A signal splitter for reducing noise ingress, said signal splitter comprising:

• an interruptible signal path extending from a supplier-side port through an output of a user-side port, the interruptible signal path comprising one or more signal branches;
• a signal detector to detect a signal level on the interruptible signal path at the user-side port;
• a signal switching device arranged on a first branch of the one or more of signal branches, the signal switching device to selectively interrupt the first branch of the interruptible signal path;
• and
• a coupler circuit to perform AC coupling between the signal detector and the signal switching device, wherein the signal detector, the coupler circuit, and the signal switching circuit connect in series to at least the first branch of the one or more signal branches in the interruptible signal path.

A method of terminating a port to prevent noise ingress comprising the steps:

• applying a current to a conductor of at least one interruptible signal path through at least one user-side port, each of said interruptible signal paths including one or more signal branches;
• determining whether each of said interruptible signal paths is terminated on a user side of a reference point;
• and
• interrupting and terminating each of said interruptible signal paths at a termination point when said interruptible signal paths are unterminated on the user side of a reference point in a predetermined acceptable arrangement.