Reply To: Noise measurement with Femto Preamplifier

Hi Justin,

thanks for replying.
Yes the gain is 1000 volts per amp.

For example:
-120dBm to V/rt Hz than using the gain 1000V/A to get A/rt Hz

???_(???/??)=?_???−10 log⁡(???) [-120-10log(10)]
?= (√(10^((?_???−30)/10)∗?))/???? (rt(10^((-130-30)/10)*50OHm)/1000V/A
I = 5E-10A/rt Hz

Is this the way to do?

BR
Flo