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HP 3325A Modulation Question

Posted: Tue Nov 23, 2021 5:41 pm
by landwn
I have a question about FM Modulation with an HP 3325A Synthesizer/Function Generator. This generator can do AM and PM modulation. If I understand correctly, I can achieve FM Modulation with the use of an external module like the HP 86632B. Does anyone have experience/knowledge in doing this? If so, how does it work? Does it get inputted through one of the back connections? The service and user manual do not go into an explanation of how to accomplish FM. Thanks!