If you explore NanoVNA-App you will find lots of things. Right click on the graph window to find numerous options. Clicking on the text in the upper left corner of the graph window will allow you to select the graph type. The New Graph button at the far right of the top button row will do just that.
Do upgrade your firmware. You will benefit from new features and bug fixes. I am using Dislord 1.0.45 on my H. There is no "standard" firmware, only latest and obsolete. :)
73
-Jim
NU0C
On Sat, 20 Feb 2021 06:33:06 -0800
"Manfred Mornhinweg" <manfred@...> wrote:
Roger,
The NanoVNA MOD v3 software has some nice plotting features but I prefer the
NanoVNA app by OneOfEleven that works with the 1.0.45 firmware by DiSlord.
I didn't know about that software. I just downloaded it, but it doesn't seem to work with standard firmware, and I'm hesitant about changing to a different firmware, given that the stock one works well.
Also, I didn't find a way to change what the graph displays. Is it really limited to only displaying S11 and S21? Among all the options given by the NanoVNA, and by the PC software I'm using, I find RLC graphs most useful for component testing.
The firmware does 401 points on the -H4 instead of 101, faster data
transmission and some nice new user features on the NanoVNA. The NanoVNA app
is the best PC program I have used to date with nice scaling and plotting
features, trace smoothing, calibration averaging and the ability to do
firmware updates and much more.
I only have the NanoVNA-H, and I wouldn't like to put special firmware on it. So it seems that the software you use is not for me!
I can't use NanoVNA Saver either, because it doesn't run on Windows XP, and that's what I use.
Good that there is a choice of programs.
I would love to get more than 101 points, and I would also love an actual RLC display, rather than the RXZ display given when selecting RLC. A true RLC display would be great to directly observe the variations of component values against frequency.
Maybe some day I end up writing my own program for this purpose. Is there a clear description of the NanoVNA's communication protocol?
That clothespin idea is really interesting for testing SMD parts. I am going
to build a jig using this method. If you have one already built could you
please post some pictures.?
I haven't built it yet. It's just an idea. So far I have only built that very simple component test jig using a small piece of PCB, using clothespins for calibration and for holding component leads and SMDs against the board. It serves me well enough for now.
Ray,
The use of a small piece of Teflon or other plastic between the contacts of the clothespin for doing the OPEN calibration may be a bit problematic.
It will increase the capacitance between the contacts which will probably lead to a less accurate calibration . I would suggest finding a way to hold
the contacts open without the inclusion of the plastic.
Well, there is no need to place the plastic "open" calibrator between the contacts! A clothespin jaws are much larger than an SMD. The jig could easily be made with small contact areas, something like 3mm diameter. The "open" calibrator can be placed in the clothespin several mm away from those contact areas. That should bring the "open" calibration error down to less than 0.1pF, which is probably good enough for most of us.
The traces leading to the contact areas should of course run well away from each other, to reduce capacitance miscalibration if the clothespin flexes and distorts in use.
Jim Shorney