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| Non-Diversity Single channel radio receiver. See diversity.
Normalising Most patch panels are supplied with all sockets isolated (not normalised). In this case, the only internal linking is between the front sockets and rear terminations. Normalising is a means of establishing a connection between top and bottom sockets without a patch lead. This is useful when sockets which are normally connected together, such as mixer insert points, are brought up to a patch panel. There are two methods of normalising in common use: half normalising (or semi-normalising) and full normalising. When a pair of sockets is half normalised (sometimes called 'sniff and break'), the link between them is broken only when a plug is inserted into the bottom socket. The top socket can be plugged into without breaking the link. If a pair of sockets is fully normalised, the link is broken when a plug is inserted into either the top or the bottom socket.
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