Thanks for the PDF, very interesting reading.
Do you know what is the difference between the NFA and the ESA? I
thought the NFA is just an ESA with the Option 219 card installed and
the 2 ports routed to the front panel.
I searched on Google images to see some pictures with the NFA hardware
shown on the display and I saw they have different boards (part numbers)
installed compared to ESA. I guess it is not just the E4401-60123 board
installed.
I couldn't find any pictures with the NFA hardware to see how it looks
inside.
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On 02/12/2024 22:21, jmr via groups.io wrote:
The E444xA does have the 110 option for a 50 GHz preamp but the noise
figure (and presumably also the input VSWR) of the preamp limits the
performance across the upper parts of the frequency range.
The older version of the 5989-5065EN noise figure selection document can
be found here:
5989-8056EN-05-5-10.indd <
an/5989-8056EN.pdf>
This includes graphs for the ESA and the 8970B.
I think the reason the ESA and 8970B aren't listed in the later version
of the above document is that they are now classed as obsolete. So is
the E444xA analyser.
