1. Tektronix: ‘TDS6000B & TDS6000C technical reference’, 2006
2. Agilent: ‘Infiniium DCA-J, 86100C wide-bandwidth oscilloscope, technical specifications’, 2007
3. Agilent: personal communication, 2007
4. Verspecht, J.: ‘Calibration of a measurement system for high-frequency nonlinear devices’, 1995, Doctoral, Vrije Universiteit Brussel available at: http://www.janverspecht.com