64B/66B ENCODING TEST DEVICE

PROBLEM TO BE SOLVED: To accurately perform test of an arbitrary pattern to a 64B/66B encoding or decoding, with high reproducibility. SOLUTION: Frame data at a level higher than a physical coding sublayer of the Ethernet (R) is generated from a frame generator 21 and is then input to a 64B/66B encoder 22 for 64B/66B encoding operation of the physical coding sublayer. Meanwhile, a sequence pattern generator 23 generates an arbitrary 66B sequence pattern previously written. A controller 50 writes a desired sequence pattern in the sequence pattern generator 23 and selects either the data encoded by a 64B/66B encoder 22 or a sequence pattern issued from the sequence pattern generator 23 and imparts the one selected to a test target device by controlling a data selector 24. COPYRIGHT: (C)2010,JPO&INPIT