Introduction and classification of N9340B spectrum analyzer
(N9340B spectrum analyzer) spectrum analyzer, also known as spectrum analyzer, is a relatively expensive test and measurement equipment. Mainly used for frequency domain analysis of RF and microwave signals, including measuring signal power, frequency, distortion products, etc. More advanced spectrum analyzers can perform demodulation analysis of RF and microwave signals, also known as signal analyzers.
(N9340B spectrum analyzer) classification of spectrum analyzer
According to the working principle, there are two basic types of spectrum: real-time spectrum analyzer and swept-tuned spectrum analyzer.
The real-time spectrum analyzer includes a multi-channel filter (parallel type) spectrum analyzer and an FFT spectrum analyzer.
The swept-tuned spectrum analyzer includes a scanning RF-tuned spectrum analyzer and a super-heterodyne spectrum analyzer.
The real-time frequency analyzer has corresponding filters and detectors for different frequency signals, and a synchronized multi-tasking scanner transmits the signals to the CRT screen.
The scan-tuned spectrum analyzer is a local oscillator whose input signal is directly applied to the mixer and then modulated by the attenuator. The scan generator synchronized with the CRT generates an oscillation frequency that changes linearly with time, and is mixed by the mixer and the input signal. wave.