Classification of N9340B 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.
Reading of the N9340B spectrum analyzer
Level reading: The reference level REF is mainly used. The uppermost horizontal line on the instrument screen graphic is the reference level line. The level indicated by this line is the reference level, and its value and unit are displayed in the upper left corner of the screen.
Frequency reading: The center frequency, the starting frequency, and the ending frequency in the graph are three vertical lines, and the number of frequencies represented by each is displayed at the bottom of the screen.
Use of the cursor: Press the MKR button and a flashing cursor will appear on the screen curve. The level and frequency of the cursor position are displayed in the upper left corner of the screen. The cursor can be moved at will, and where it is moved, the frequency and level of the place are displayed.