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I just released NanoVNA-Saver 0.1.3!



This release adds a couple of much requested features:

Popout charts
All charts can now be popped out as separate windows: Right click them, and
select "Popout chart" to get a copy of it. As a side effect of implementing
this, the main window can now also contain multiple charts of the same
type. Want a zoomed in version of an existing chart next to it? Now you can.

VSWR markers
Under Display setup, you now have the option of adding a number of VSWR
markers, to be shown on both the S11 Smith chart, the S11 Return Loss
chart, and obviously the S11 VSWR chart. The colour can be selected, and
you can add however many you need. The markers are saved between startups.

Logarithmic frequency span
All frequency-dependent charts can now be changed to show logarithmic
frequency span instead of linear. Right click, select Frequency axis, and
choose linear or logarithmic.

Shortcuts
You can now start a new sweep by pressing Ctrl-W, or stop a sweep by
pressing Escape while within the main window.

Line thickness and point size
Line thickness and point size can now be configured within the Display
setup window. Default values are 1 pixel for lines, 2 pixels for data
points.


Additionally, there are minor changes, such as -60 dB points being
automatically estimated from -10 dB and -20 dB points when doing filter
analysis, and a number of bugfixes and stability improvements. This
version should also work better with the NanoVNA-F, though there may still
be some niggles.

I look forward to hearing your feedback on the software, and I hope you
enjoy using it!

--
Rune / 5Q5R

Hi Rune,

I just tried NanoVNA-Saver 0.1.3.

I think the new enhancements are a great improvement in terms of usability and the fixed scaling options help prevent charts 'jumping around' all over the place when they auto scale, which make comparisons between plots so much easier.

Thanks for following up on the suggestions, much appreciated.

Cheeky ask - Any chance of adding Series R & X values to the markers in the next release :-)

Regards,

Martin - G8JNJ

Many thanks, Rune, IMO a considerable improvement.

Hi Martin,
I want to do more things with markers, including having the ability to add
more of them, and/or to change what information is being displayed. Not
sure it will be in the next release, but it's on the list.

I am a little confused, though - my background is not (at all) in RF tech:
Isn't Series R & X = Z? Which is already displayed? Or what are we talking
here?

--
Rune / 5Q5R

On Wed, 16 Oct 2019 at 17:18, Martin via Groups.Io <martin_ehrenfried=
[email protected]> wrote:

Hi Rune,

I just tried NanoVNA-Saver 0.1.3.

I think the new enhancements are a great improvement in terms of usability
and the fixed scaling options help prevent charts 'jumping around' all over
the place when they auto scale, which make comparisons between plots so
much easier.

Thanks for following up on the suggestions, much appreciated.

Cheeky ask - Any chance of adding Series R & X values to the markers in
the next release :-)

Regards,

Martin - G8JNJ

W5DXP,
thanks - don't make it sound like it was horrible before ;-)

--
Rune / 5Q5R

On Wed, Oct 16, 2019 at 02:38 PM, Rune Broberg wrote:

Additionally, there are minor changes,

One "minor change" I like a lot is the better handling of the (X-axis) numerals in my graphs. Say, I'm using a span of 100 kHz around 20 MHz.
"Return loss" and "Gain" graphs now show two decimals where it makes sense.
Previously, all X-axis points were shown as "20.0 M", whereas now they go from "19.95M" to "20.05M" and the center point still shows "20.0M". Neat.

Raymond

You're right, Raymond! I forgot about that. I still need to do *more* with
it - it breaks in places. But I guess as long as people don't complain
about it ... ;-)

--
Rune / 5Q5R

Sorry, I can't seem to locate the fixed scaling options. Where are they?

Right click the charts. :-)

--
Rune / 5Q5R

Thanks Rune, when I said "considerable improvement" I was talking about the better visibility it provides OFs like me with macular degeneration, cataracts, etc. However, I think there is a slight bug in the graph line widths. When I launch saver, it remembers what line width I previously selected but it doesn't implement it until I make a new change to the line width.

Thanks, I'll get that fixed in the next version :-) Didn't catch that one
during the testing, clearly ;-)

--
Rune / 5Q5R

W5DXP wrote:

Thanks Rune, when I said "considerable improvement" I was talking about the better visibility it provides OFs like me with macular degeneration, cataracts, etc.

Yeah. Me too. Add in presbyopia to the "et cetera." Which is where soldering a couple of less-than-rice-grain-sized resistors for the USB-C port fix becomes ... problematical.

Luckily, I still have all my SMD soldering tools. But I also now have a 10-diopter fluorescent-ring-tube-lighted 25cm-diameter magnifying glass which might allow me to attempt it.

--
Wes Will
N9KDY

The current display is in smith chart with Magnitude and phase, and or on
SWR just that, No R and j. R is the resistive component of the signal and
j is the computed reactive element in ohms of the phase. Yes, we can do it
off line of course, but both of my other VNA units will give me the R and j
directly. Being a RF nut, I don't use Smith charts in the design of
anything I use the R an j. The Smith chart is good for many things, but I
don't use it, I prefer to look at the Magnitude and the j as it is
displayed in a swept response of frequency. That is, I am mostly
interested in the j0 crossover that is the resonance of the load I am
putting into the analyzer.

Example: if I want to know the resonant frequency of a antenna, I do not
look for min SWR. That tells me nothing. Once I know the j0 frequency, I
then can address matching the R magnitude and I am done..... Sorry for the
long comment, but I think it needed to be said. Cheers,


Mel, K6KBE

A standard PC USB HD camera connected to your PC should be able to be re-focused for close-up work.You just need a stand to hold it above the item you're working on.Even the cheap ones from the dollar store should work if they are 640x480 or better.Just make sure they are the newer typeas that don't need any drivers (ie: UVC compatable)
Or - you can get an old stereo microscope from any surplus equipment store.
Regards,
Larry

Hi Mel,
I'm not entirely sure what you wanted to say with your comment, which
needed to be said, though? Was it related to series R + X, as requested by
Martin? I'm not sure where the Smith chart comes into it?

--
Rune

On Wed, 16 Oct 2019 at 19:59, Mel Farrer, K6KBE <farrermesa@...>
wrote:

The current display is in smith chart with Magnitude and phase, and or on
SWR just that, No R and j. R is the resistive component of the signal and
j is the computed reactive element in ohms of the phase. Yes, we can do it
off line of course, but both of my other VNA units will give me the R and j
directly. Being a RF nut, I don't use Smith charts in the design of
anything I use the R an j. The Smith chart is good for many things, but I
don't use it, I prefer to look at the Magnitude and the j as it is
displayed in a swept response of frequency. That is, I am mostly
interested in the j0 crossover that is the resonance of the load I am
putting into the analyzer.

Example: if I want to know the resonant frequency of a antenna, I do not
look for min SWR. That tells me nothing. Once I know the j0 frequency, I
then can address matching the R magnitude and I am done..... Sorry for the
long comment, but I think it needed to be said. Cheers,


Mel, K6KBE

On Wed, Oct 16, 2019 at 10:29 AM Rune Broberg <mihtjel@...> wrote:

Hi Martin,
I want to do more things with markers, including having the ability to

add

more of them, and/or to change what information is being displayed. Not
sure it will be in the next release, but it's on the list.

I am a little confused, though - my background is not (at all) in RF

tech:

Isn't Series R & X = Z? Which is already displayed? Or what are we

talking

here?

--
Rune / 5Q5R

On Wed, 16 Oct 2019 at 17:18, Martin via Groups.Io <martin_ehrenfried=
[email protected]> wrote:

Hi Rune,

I just tried NanoVNA-Saver 0.1.3.

I think the new enhancements are a great improvement in terms of

usability

and the fixed scaling options help prevent charts 'jumping around' all

over

the place when they auto scale, which make comparisons between plots so
much easier.

Thanks for following up on the suggestions, much appreciated.

Cheeky ask - Any chance of adding Series R & X values to the markers in
the next release :-)

Regards,

Martin - G8JNJ

Rune,
As usual, kudo's on the latest 0.1.3 update. As I noted on the 0.1.2 update, the "Hz/step" value seems to have gotten lost (blank field), see attached screenshot.

- Herb

Hi Herb,
I don't see an attachment :-) I have attempted to make the code more
resilient to that particular phenomenon, so if you can describe the exact
steps that cause it, that would be most appreciated!

--
Rune / 5Q5R

On Wed, Oct 16, 2019 at 12:32 PM, Rune Broberg wrote:

Hi Herb,
I don't see an attachment :-) I have attempted to make the code more
resilient to that particular phenomenon, so if you can describe the exact
steps that cause it, that would be most appreciated!

--
Rune / 5Q5R
-----------------------------------------------------------

Forgot the attachment. In both 0.1.3 and 0.1.2 the "Hz/step" field is blank. Prior to 0.1.2 the calculated value was shown in the field.

Herb

Hi all,

I am confused about the remarks as well Rune. The current saver routine displays the Chart, the VSWR plot etc... with the MARKER DATA display providing the R+/- jX values. As well it provides the parallel equivalent admittance although expressed as a parallel Z.

In any case, all the information is properly displayed to go off and do an impedance match. That is to say you have the DUT Z or Y presented to you at a specific frequency and in a format that permits you to do either a real to real match or a real to complex match.

Prior, I agree, the vna gave Z as a real part and a C or L element value. Then you would have to figure the value of X for a specific frequency of interest. The save fixes that issue, I believe.

Alan

Right - it doesn't get set immediately when you connect. That's apparently
still a bug. But if you enter anything in the frequency input fields, it
should still update. :-)

--
Rune / 5Q5R