Separate input and output units, allows for internal waveshaping to specific data rate, 5in. L x 1-7/8in. Sq excluding connector pins, 0 degrees to 70 degrees c ambient temp, dc to 100, 000 bps speed, accepts 4 types of input signals-ttl logic level 0 to p3v, weco 303 levels, porm6v balanced, porm6v unbalanced
