​At first, we need to reset the central frequency, span and reference level according to the tested signal. Then under the circumstance of without overload reduce the pad value gradually. If the SNR is less than 15dB, we need to reduce the RBW.

​The programmable DC power supplies device has the dangers like high voltage, large current, please do not operate unless the relevant personnel.

We all know that the spectrum analyzer can be applied in many areas and plays a important part. We need to know more about it such as how to use it properly.

The most common spectrum analyzer is the scan tune spectrum analyzer. The modulated local oscillator generate the oscillation frequency with linear variation along time with the scan generator.

​At present, the power supply has a wide application. We need to know the suitable occasion and surrounding which need the power supply device. Here are some instrument for the power supply.

​When we operate the electronic power facility, we need to pay more attention to the safety problem, so when we install the programmable DC power supply we need to know the environment and device explanation. Here are the detection tips of the programmable DC power supply.