Spectrum analyser for pre-compliance checks

[ricko_uk]

Hi,
I was looking at an entry level spectrum analyser to see where on a PCB there might be high emissions.

The maximum frequency I ever need to test to (for the work I do) is 1GHz. So I am thinking about the DSA815 and DSA815-TG (the first two in the table):
https://www.rigol-uk.co.uk/products/spectrum-analysers/rigol-dsa800-series/

Is that a good choice? Or perhaps there are better ones for in that price range?

How/what is the tracking generator used for?

Thank you

[jonpaul]

Buongiorno Signore the 1 gHz Chinese SA may not be   needed....

Rather then measure and then patch up a poor design and layout after the fact.
easier to learn  good PCB layout and shielding practice for EMI compliance and design the PCB from the start,

Just a  scope and  DIY  loop probes can see the EMI. Conducted 100/150 kHz...30 MHz, radiated depends on the device class and power.

Actual compliance and qualification of a device needs an extensive lab for both conducted and radiated EMI.

Finally any SA will have a learning curve.
 

Ciao

Jon

[Karel]

Imho it's almost impossible to do pre-compliance measurements without a (semi-)anechoic chamber and an (expensive)
calibrated antenna. I have used a temcell but the results are not comparable because the antenna needs to be located
at least 3 meters away from the device under test.
In the end we decided to do the pre-compliance tests in a certified lab. Usually you can rent it for half a day.
They give you a printed report but no certificate (in order to get the lowest price).

A spectrumanalyzer is useful if you need to find the source of a problem. A tracking generator is not needed at all.

[ricko_uk]

Thank you both