A-Scan : A method of data presentation on a CRT (cathode ray tube) utilizing a horizontal bases line that indicates distance, or time, and a vertical deflection from the base line which indicates amplitude. (RP 2X)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}