Archive for December 2015

Tracing Filter/Oscillator Frequency Response Using Spectrum Analyzer and Signal Generator

In this blog post, Let’s take a look at how to measure a filter’s frequency response using a spectrum analyzer and a signal generator. Typically, a tracking generator is preferred for this kind of scalar network analysis as its center frequency is in-sync with the frequency the spectrum analyzer’s bandwidth filter is currently tuned to. But with a good signal generator, we can manually sweep across the desired frequency range and obtain similar amplitude versus frequency measurements. Continue reading ‘Tracing Filter/Oscillator Frequency Response Using Spectrum Analyzer and Signal Generator’ »

AM/FM Demodulation Using HP 8566B Spectrum Analyzer

In my previous blog post, I did a quick teardown of my HP 8566B spectrum analyzer. In this post, I will discuss how to use a spectrum analyzer like this to demodulate an AM or a FM signal. A video including the theory and a few experiments is linked towards the end. Continue reading ‘AM/FM Demodulation Using HP 8566B Spectrum Analyzer’ »

Some Pictures of My HP 8566B Spectrum Analyzer

The latest addition to my lab is an HP 8566B spectrum analyzer. This isn’t just any spectrum analyzer, it was perhaps the best spectrum analyzer money could buy back in the late 80’s. While it was discontinued in 1997 and has long become obsolete, its performance remains quite impressive even by today’s standards and still rivals that of many of its modern counterparts. Continue reading ‘Some Pictures of My HP 8566B Spectrum Analyzer’ »