jcarlos wrote:
Hello all.
I need hellp me: I purchased a R&S ESM 500A but I dont have audio and
display show "err.13" "C.F.210" and "C.F. 305". The frecuency like no
work. Someone tell me any about?
Thank you
jcarlos

Jcarlos:

take it back to the person
you bought it from.

Insist on money back unless it works