he Six Basic Functions of the Spectrum Analyzer

Here are the basic function of the spectrum analyzer:
1.Setting the frequency.
2.Setting reference level.
3.Setting bandwidth, scanning time, trigger control.
4.Setting tracking generator.
5.Setting tracking control.
6.Measure the return loss with the sign function.
We could choose the different spectrum analyzer through various demand, then get more precious date we need.

links:
China DC Power Supplies
China Digital Multimeters 
China Frequency Characteristic Analyzer