![]() ![]() That could be a simple spreadsheet program such as Microsoft Excel, or a custom plotting program. Another program can be used to display the data. During the process, the data is stored to a file. The computer sets the generator to a specific frequency, then measures power, then the frequency is increased and the process repeated until the desired frequency band is covered. Plotting is done using a signal generator and a power meter, for instance. Some of the applications of computer control include: plotting the frequency response/insertion loss of filters or other devices, and logging data at specified time intervals for instance. Pretty soon, the desire to do something with the GPIB (also called IEEE-488) connector on the back of most of these instruments drove me to action. I started a collection of HP, Tek and Fluke test equipment a few years ago. ![]()
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