I am very new to the EMC world (co worker quit Friday and now its my problem) I was asked by my supervisor to check the CISPR25 spec to see if it is allowed to put a 1000 uf cap between HV+ and HV- between the LISN and the DUT. I have the CISPR25 (2016 version) spec and I have spent the last hour searching through it for the answer but so far I have found nothing that says if it is allowed or not.

We are concerned with CE420 and RE310 testing specifically.

I am hoping someone with a lot more experience then me can point me in the right direction.

I really appreciate any help you can provide.