Multi-input remote heads for sequential testing

A method for connecting one or more signal lanes to a test and measurement instrument, comprising:

• connecting a first signal lane from a first port to an input of a multiplexer in an input selector device through a first input radio frequency (RF) cable;
• connecting a second signal lane from a second port to the input of a multiplexer in the input selector device through a second input radio frequency (RF) cable;
• operating the multiplexer to select either the first signal lane of the first port or the second signal lane of the second port;
• amplifying a signal on the lane selected by the multiplexer in the input selector device;
• transmitting the amplified signal to test and measurement instrument;
• and
• storing de-embedding parameters of the first input RF cable and the second input RF cable in a memory of the input selector device that may be used to remove effects of the presence of the first and second input RF cables.

An input selector for electrically connecting one of a plurality of test signals from a device under test to a test and measurement instrument, each of the plurality of test signals coupled to the input selector through a path that includes a respective one of a plurality of input radio frequency (RF) cables, the input selector comprising:

• a multiplexer having multiple inputs, each of the multiple inputs having a connector and being coupled to a different one of the plurality of test signals from the device under test, and having an output of a selected one of the multiple inputs;
• an amplifier coupled to the output of the multiplexer for amplifying the selected test signal of the device under test before being sent as an output of the input selector to the test and measurement instrument;
• and
• a memory structured to store the de-embedding parameters that may be used to remove effects of the presence of the plurality of input RF cables, and in which the memory is further structured to store scattering parameters of the plurality of input RF cables, the connectors of the multiplexer, and the multiplexer.