Datasheet

A GUIDE TO RF SIGNALS
5 | TEK.COM/RSA
Additional Information:
• Wikipedia
While it’s very important to determine frequency, occupied bandwidth and relative signal
strength; we also need to find out how often a signal is on.
The spectrogram display is the one of the best ways for us to measure this aspect of a
signal. Like the spectrum display the spectrogram shows low frequencies on left and
higher frequencies on the right. What makes this display different is that color represents
the amplitude of the signal, and the Y-Axis is Time. You can think of a spectrogram as a
strip chart recorder measuring power and frequency over a time period.
The spectrogram provides important information as it can tell us how often a signal
is present, and indicates if the operating frequency is changing over time. These
two pieces of information are critical in identifying the class of service of a particular
emission.
Armed with frequency, occupied bandwidth, and time data; it is possible to make
accurate assessments of the type of radio emitter that is being analyzed.
WHAT’S A SPECTROGRAM DISPLAY?
Using spectrogram displays in the lab using the RSA600 series spectrum Analyzer.
LEARN MORE