I specifically got this one from amazon. With it I also purchased the double set of this. so I can use it with most antennas. I also have some other adapters available from using a spectrum analyzer that also has an SMA connector, so if you need to be able to adapt the device to a BNC cable or something, keep that in mind.
No instructions came with it. In fact, no paperwork at all. That doesn't bother me as I am the type of person who doen't use instructions unless I absolutely need to. It did come with two SMA cables, an SMA "barrel connector", and the loads needed to calibrate the device, and a stylus, as well as a USB A to C cable.
As far as using the device, all I have done from the devices built in touch screen is the calibration, and that is only because the software I used said it should be done that way. For the most part I used the "nanovna saver" software for everything else so far, and it is customizable out the wazoo, and in my opinion far more intuitive. That is also where the screenshots above came from. It is far easier to use than the touch screen interface. There is also the "nanovna sharp" software, and I have seen a video where the rigexpert software works with it as well, but I haven't tried using these yet. I have no problem with this as my last VNA required a PC connection, as does my spectrum analyzer, so I am in the habit of bringing a laptop with me when I am going to work with antennas anyway.
I've seen that video, the guy uses a guitar pick as a stylus... It doesnt' work that well, he should use something else, like the pencil eraser another guy uses... I guess whatever works.
As far as figuring the device out, I've seen several youtube videos by different people before I purchased the device, and as I have mentioned I have prior experience working with a very nice VNA, so the learning curve for me is not as high as it likely is for most others.
I had no problem getting the software I used on two pc's to recognize the device. I plugged it in and turned it on and it showed up as a com port. The nanovna saver software picked it up when I hit rescan, and both computers connected to it without problem.
If you want just SWR, X and R, in the pictures I posted above, the left two charts in each, the top is SWR, the bottom is X and R. If you only have those two they will take up the entire screen in said software. You should be able to set the device that way as well, but from the videos I've seen it is harder to read. I think part of why it isn't as intuitive as many expect is the size of the screen.
If you have any questions about the device, I am happy to answer them, although aside from calibrations I will be using the software program used above, or perhaps one of the others, as much as possible.
Its the NANOvna-H which is one of the newer ones, its frequency range is from 10 KHz to 1.5 GHz. The software version is 0.4.5-4-g96e7efe, which was created on Jan 18, 2020.
If you have any questions I am happy to answer them. If you need, I can even make a video of how to use said software, and in time I can make one of the other software options as well.
The DB