Development of an Automated Data Acquisition System for Absolute Determination of Effective Efficiency of RF Power Mounts using Coaxial Microcalorimeter

摘要

Data Acquisition System is developed for automating the calibration procedure of Coaxial Microcalorimeter, which is a primary RF Power standard in the frequency range of 10 MHz to 18 GHz. It also makes calibration of power standards faster and more accurate through GPIB cables using IEEE-488 interface card. The software for this system is developed using the VEE Pro application, which is a graphical programming environment optimized for use with electronic instruments. The program enables the computer to continuously acquire the raw data from the electronic equipments, display it as a graph in a real time environment and save it in a tabular form. Developing this system minimizes human involvement and therefore reduces the chances of errors. It eliminates the need to record the reading manually or perform any cryptic and error-prone steps like preprocessing, compiling, or linking to run the software.