The digital Ultrasonic transmitter/receiver processes the UT signals from the dry coupled TWP12 dual wheel probe and combines the images with the encoder information. The digiscan is connected to a notebook computer (not supplied) via the parallel port. The software has standard flaw detector controls for the A scan set-up, simplifying training and operation requirements. All controls such as gain, time base range, filtering and gate adjustments are on the same screen as the active A scan display and the B scan image.