Enabling options on Agilent ESA series E4402B E4404B E4405B E4407B

[4x6uj]

Hi,
Sorry for the misunderstanding. I have just realized there is no need for a key in order to enable option 219, it's enough to install the Noise Figure personality downloaded from Keysight. It will work right away if you have the noise source control card installed.
Hope this info helps others too.
Thank again,