Patent ID: 7378835

Claim:
A switching apparatus comprising: a first multiplexer including a first plurality of channels and a first plurality of switches, wherein each of the first plurality of channels includes a respective one of the first plurality of switches; a second multiplexer including a second plurality of channels and a second plurality of switches, wherein each of the second portion of the plurality of channels includes one of the second portion of the plurality of switches; a plurality of primary terminals, wherein each respective one of the plurality of channels of the first and second multiplexers is coupled to a different one of the plurality of primary terminals, and wherein the first plurality of channels are coupled to different ones of the plurality of primary terminals than the second plurality of channels; and a first common secondary terminal and a second common secondary terminal, wherein each of the first plurality of channels is coupled to the first common secondary terminal, and each of the second plurality of channels is coupled to the second common secondary terminal; wherein the first plurality of channels are interleaved with the second plurality of channels to form a two-wire interleaved differential multiplexer including a plurality of two-wire channels; and wherein the switching apparatus is configured to couple to a plurality of devices under test (DUTs) via the plurality of primary terminals and to a measurement device via the first and second common secondary terminals, wherein the switching apparatus is configured to provide a signal path between the DUTs and the measurement device to test the DUTs.