Patent ID: 8483073

Claim:
A test apparatus for testing a device under test, comprising: a receiver block; and a transmitter block, wherein the receive block includes: a receiving section operable to receive packets from the device under test; a reception data processing section operable to generate a reception test data sequence corresponding to a second packet expected to be received from the device under test, the reception test data sequence including a value corresponding to received data included in a first packet that has already been received by the receiving section from the device under test; and a judging section operable to judge whether communication between the test apparatus and the device under test is acceptable, based on a result of comparing a data sequence of the second packet received by the receiving section with the reception test data sequence generated by the reception data processing section, the receiver block is operable to notify the transmitter block that a match between the data sequence of the second packet received by the receiving section and the reception test data sequence generated by the reception data processing section is obtained, and the transmitter block includes: a packet data sequence storing section operable to store, i) in association with each of a plurality of packet types, a data sequence included in a packet of that type and ii) the received data included in a packet received by the receiving section; a transmission data processing section operable to read data from the packet data sequence storing section and, in response to the transmitter block being notified that a match is obtained, generate a transmission test data sequence corresponding to a packet to be transmitted to the device under test, a predetermined portion of the transmission test data sequence including a value corresponding to the received data stored in the packet data sequence storing section; and a transmitting section that transmits the transmission test data sequence generated by the transmission data processing section to the device under test.