Patent ID: 8271225

Claim:
A test system, comprising: a main selector comprising a plurality of first switches, a plurality of first contacts, and a plurality of second contacts, wherein a first terminal of each first switch is connected to an input of an oscillograph, a second terminal of each first switch can selectively contact one of the plurality of first contacts or one of the plurality of second contacts; a first and a second switching connectors each comprising a plurality of inputs and a plurality of outputs, wherein each output of the first switching connector is connected to a corresponding first contact of the main selector, each output of the second switching connector is connected to a corresponding second contact of the main selector; a first and a second sub-selectors each comprising a second switch, a third contact, and a fourth contact, wherein a first terminal of the second switch of the first sub-selector is connected to an input of the first switching connector, a second terminal of the second switch of the first sub-selector can selectively contact the third or the fourth contact of the first sub-selector, a first terminal of the second switch of the second sub-selector is connected to an input of the second switching connector, a second terminal of the second switch of the second sub-selector can selectively contact the third or the fourth contact of the second sub-selector, a plurality of terminals of a first apparatus to be tested are correspondingly connected to the other inputs of the first switching connector, the third and the fourth contacts of the first sub-selector, a plurality of terminals of a second apparatus to be tested are correspondingly connected to the other inputs of the second switching connector, the third and the fourth contacts of the second sub-selector; and a processor connected to the main selector, and the first and the second sub-selectors, wherein the processor sends a first instruction to control the first switches of the main selector to contact the first contacts or the second contacts and select a corresponding sub-selector, the processor also sends a second instruction to control the second switch of the selected sub-selector to contact the third or the fourth contact.