As we know control panels have low base frequencies 50/60 and 50th harmonics is only 2.5kz. All affordable spectrum analysers like rigol 815 tg have bandwidth from 9khz so does it mean they are not useful for FFT analysis of the EMC issues in the control panel? What gear do you use ? What near field instruments?

 

You'll have to explain what you are trying to accomplish

 

hi i would like to troubleshoot emc problems in automation control panels and check levels of emc inside the panel after manufacture before shipping

 

Hello,

You could use a soundcard in a pc or laptop.
The program audacity can perform a fourier analysis.
https://www.audacityteam.org/

Bertus

 

for control panels typical meter instrumentation used by instrument and electrical technicians is more than adequate.

 

Hello,

You could use a soundcard in a pc or laptop.
The program audacity can perform a fourier analysis.
https://www.audacityteam.org/

Bertus

hi thanks for sharing that, could it help in emc panel troubleshooting ?

 

The required bandwidth for spectrum analyzers in automation control panels typically ranges from 20 MHz to 1 GHz. The exact bandwidth depends on the frequency range of the signals being measured and the level of detail needed for analysis. For general industrial applications, a bandwidth of 100 MHz to 500 MHz is often sufficient. However, for high-speed or wideband signals, higher bandwidths may be necessary.