Hi msliva
I'm afraid I didn't even know these VNAs existed
However, I've had a quick skim of the specs and I can give a few initial observations... These are clearly aimed to compete with similar USB VNA products from numerous competitors. So this market must be quite busy!
I'd be interested to find out what 3.5mm connectors are used on the RF ports. Are they Keysight's own high performance (but very fragile) version of the 3.5mm connector or a regular 3.5mm connector?
The source harmonics (and subharmonics?) seem very high. I'm not sure how relevant this is but it seems a lot higher than on any VNA I've ever used.
There don't seem to be any bias tee options which is a shame. Or did I miss this somewhere?
The uncorrected port performance at very low frequencies (<2 MHz) seems a bit poor but this will be improved with calibration. Otherwise, the performance of any lab VNA is often dominated/limited by the choice of cal kit and most VNA users tend to degrade the potential of VNAs through the way they use the cal kit and with their choice of RF test cable and how old and phase stable the test cables are.
So the RF performance is probably OK for most users and they do seem to be quite good and reasonably fast. The big bonus is that you get a display size/resolution set by your desktop PC and any collected VNA data goes straight to the PC. With my old E5071 VNA I have to use a USB stick which can become tiresome during a busy VNA session if the data is being exported for simulation on a PC.
The saving in desktop space is huge and this type of compact high performance product is a sign of the future I think. I suppose a few of them will end up damaged on the floor because they are so easy to drag/move about so some care would be needed when organising the workspace. I'd love to have the 20GHz or 26GHz version here. I'm on the lookout for an old/used 20GHz VNA but I have no idea where I'd put something like a big old HP8720C. I've run out of space for any more big old school test gear. Realistically nothing is going to dislodge my 4 port E5071 for many years but it only goes up to 8.5GHz.
How much do these new VNAs cost? I did a quick search but couldn't find anything online. Thanks for posting up the info. We might even consider the 26GHz versions of these VNAs at work...