Can a spectrum analyzer be used as an oscilloscope?
Oscilloscopes and spectrum analyzers are two of the most important instruments in any electronic laboratory. Simply speaking, a spectrum analyzer is used to measure frequency information on a signal, whereas oscilloscopes are used to measure the timing information around a signal.
Do spectrum analyzers use FFT?
In many instances superheterodyne and FFT techniques are used in single spectrum analyzer. These test instruments offer a much higher level of performance than the older swept or superheterodyne spectrum analyzers, and as a result FFT spectrum analyzers are now used in most applications.
Which is the best way to use a spectrum analyzer?
Knowing how to use a spectrum analyzer effectively is key to being able to investigate the operation of RF circuits properly. One of the key ways to understand how to use a spectrum analyzer is to take a look at the controls.
What happens when spurious signals drop in a spectrum analyzer?
If the spurious signals drop by more than 10 dB it means that they are generated internally within the spectrum analyzer. If this is the case, reduce the input attenuator until the spectrum analyzer generated spurious signals are no longer visible.
How are gain and attenuation adjustments used in a spectrum analyzer?
Gain and attenuation adjustments There are other controls to use on a spectrum analyser. Most of these fall into one of two categories. The first is associated with the gain or attenuation of sections within the spectrum analyzer. If sections of the test equipment are overloaded, then spurious signals may be generated within the instrument.
How is phase noise measured in a spectrum analyzer?
When measuring phase noise ensure the analyzer performance is adequate: When measuring the phase noise of a signal using a spectrum analyzer, ensure that the noise performance of the local oscillator within the spectrum analyzer is around 6 dB better than that of the expected performance of the signal under test.