Abstract: A converter and digital channel selector device is provided which is interconnected between a source measurement unit having a plurality of output terminal connectors and a probe station having a plurality of input probe terminal connectors. The channel selector device is used to selectively connect each one of the plurality of output terminals of the source measurement unit to corresponding one of the plurality of input probe terminal connectors, respectively. The channel selector device includes a converter for generating a plurality of digital control signals and a digital channel select logic circuit which is responsive to the digital control signals for selectively connecting respective ones of a plurality of its input channel connectors connected to the plurality of output terminal connectors to any one of a plurality of its output channel connectors connected to the plurality of input probe terminal connectors.