开云体育

Just for info, I used the command to list modules, still doesn't show them.

So I used the pip installer to try again..

Nope, still doesn't work.

I thought these languages like Python were suppose to make things portable
? ;-)


pip3 install PyQt5
Collecting PyQt5
Downloading

(62.1MB)
100% |████████████████████████████████| 62.1MB 23kB/s
Collecting PyQt5_sip<13,>=4.19.14 (from PyQt5)
Downloading

(67kB)
100% |████████████████████████████████| 71kB 2.2MB/s
Installing collected packages: PyQt5-sip, PyQt5
Successfully installed PyQt5 PyQt5-sip
$ pip3 install numpy
Collecting numpy
Downloading

(20.1MB)
100% |████████████████████████████████| 20.2MB 75kB/s
Installing collected packages: numpy
Successfully installed numpy-1.17.1
$ pip3 install pyserial
Collecting pyserial
Downloading

(193kB)
100% |████████████████████████████████| 194kB 947kB/s
Installing collected packages: pyserial
Successfully installed pyserial-3.4

$ python3.7 nanovna-saver.py
Traceback (most recent call last):
File "nanovna-saver.py", line 19, in <module>
from PyQt5 import QtWidgets
ModuleNotFoundError: No module named 'PyQt5'

$ python3.7 NanoVNASaver.py
Traceback (most recent call last):
File "NanoVNASaver.py", line 22, in <module>
import numpy as np
ModuleNotFoundError: No module named 'numpy'

73 de Andy

Hi Rune,

Great! Some comments on v0.0.6:

1. S21 is a Transmission measurement. As such, Smith Charts and SWR
(which depend upon reflections) are meaningless, so you can eliminate "S21
Smith Chart" and "S21 VSWR" plots. (I would also recommend changing "VSWR"
to "SWR", which is the more general term)

2. Glad to see S21 Phase plot added. Two notes:
A. In the S21 fields for the two markers and for the cursor, include
S21 "phase" in addition to "gain", which is already there.
B. When viewing S21 phase, it can be useful to "unwrap" it if it
goes beyond -180 or +180 degrees (e.g. for determining Group Delay). To
illustrate this concept, I've attached a screen capture of a Matlab S2P
file display-app with the phase unwrapped (plot in the lower left-hand
corner). You can see that the phase goes down to -600 degrees. Note, too,
that the phase displayed at the two cursors is NOT unwrapped (not sure why
it isn't).

Best regards,

- Jeff, k6jca

Hi Rune --

I'm trying to help a follow running Windows install
nanovna-saver.v0.0.6.zip.

(I use Ubuntu linux)

I unzip all the files into a directory, open a command prompt in that
directory,
make all the exe's and dll's executable, and run nanovna-saver.exe.

I get:

Traceback (most recent call last):
File "site-packages\PyInstaller\loader\rthooks\pyi_rth_pkgres.py", line
11, in
<module>
File
"c:\users\au184274\appdata\local\programs\python\python37\lib\site-packag
es\PyInstaller\loader\pyimod03_importers.py", line 627, in exec_module
File "site-packages\pkg_resources\__init__.py", line 35, in <module>
File
"c:\users\au184274\appdata\local\programs\python\python37\lib\site-packag
es\PyInstaller\loader\pyimod03_importers.py", line 627, in exec_module
File "plistlib.py", line 65, in <module>
File
"c:\users\au184274\appdata\local\programs\python\python37\lib\site-packag
es\PyInstaller\loader\pyimod03_importers.py", line 627, in exec_module
File "xml\parsers\expat.py", line 4, in <module>
ImportError: DLL load failed: Access is denied.
[2188] Failed to execute script pyi_rth_pkgres


I'm not an experienced python programmer, but it looks to me like this exe
is looking for python
in \users\au184274\appdata\local\programs\python which will never happen!

So, for grins I installed python from python.org in \python\python3.7 --
It didn't help.
So, next I copied the whole directory from github and used that python.org
installed python --
and that works, but of course it has nothing to do with the stuff in the
zip file.

It would be nice if the zip file stuff worked so that users would not have
to install python,
get your stuff from github and configure python with the imports needed.

Is there some option to get your zip file stuff to look for python within
the directory
where the zip file is installed on Windows?????

73 --
Harry, W5PNY

Hi Rune --

No, I wasn't trying this on Ubuntu -- his machine is Windows 7, 64bit.

That path can't possibly exist on just about any other user's Windows
machine.
So I don't know how it could work without being able to pass an option
to python telling python where the python stuff is. Python on Windows
seems to install
in a user directory rather than a system wide directory by default. I'm
assuming you
are user "au184274" on your machines so it work on any of your machines
where
python is installed in the user directory structure.

I'm guessing that path shouldn't be hard coded in...

I was hoping I just needed to supply that exe with a commandline option
with
the directory path in it or some such.

73 --
Harry, W5PNY

Hi Rune --

It's not really clear what dll "Access is denied" applies to.
The file expat.py referred to just above that error does NOT exist
and in of your zip files or anywhere else on that machine. That's
why I installed the python.org stuff on a guess that it was trying
to run python from somewhere else. I'd certainly like to find out
why it works for you.

I just tried it under my Windows 7, 64 bit under vmware on my Ubuntu system
and I get exactly the same problem.

73 --
Harry, W5PNY

On Sep 6, 2019, at 11:17 AM, Rune Broberg <mihtjel@...> wrote:

With the help of Ohan, there's now a 32bit standalone .exe available as
part of release 0.0.6 on Github. If you were having problems before, do
give that a go, and feel free to report any problems here, on GitHub, or
direct to me. :-)

--
Rune / 5Q5R

On Fri, 6 Sep 2019 at 18:26, Harry McGavran Jr <w5pny@...> wrote:

Hi Rune --

It's not really clear what dll "Access is denied" applies to.
The file expat.py referred to just above that error does NOT exist
and in of your zip files or anywhere else on that machine. That's
why I installed the python.org stuff on a guess that it was trying
to run python from somewhere else. I'd certainly like to find out
why it works for you.

I just tried it under my Windows 7, 64 bit under vmware on my Ubuntu system
and I get exactly the same problem.

73 --
Harry, W5PNY

Good Morning Rune,

I’ve been playing with 0.0.6 and I’ve stumbled upon a couple of things.

First, regarding the “Display settings” dialogue box. I invoked it, used
it and it worked just fine. Then I accidentally clicked elsewhere on the
main screen area and the dialogue box disappeared. Subsequent clicks on
the “Display setup …” button did NOT bring the dialogue box back to the
screen. It wasn’t until I was closing the program that I found the
dialogue box hiding behind the main screen. It’s a minor, but annoying,
problem.

Also, the terminology on the “Close serial/Open serial” button might need
to be looked at. The first time I used the program I had no trouble
understanding that “open serial” meant “Open a serial connection channel to
the NanoVNA” and “close serial” meant “Close a serial connection channel to
the NanoVNA”. However, last night (and perhaps it was because it was late
and I was tired) I looked at that switch and thought that “open serial”
meant that I wanted to “Open the connection to the NanoVNA”, Open as in
disconnect, cut the wire, pull the plug. And “close serial” could just as
easily mean “close the switch” or make the connection. For a couple of
minutes I got really confused. Perhaps CONNECT and DISCONNECT as used in
NanoVNASharp might be a better choice. Just one man’s humble opinion.

I have been experimenting with the TDR function using the Python source
code. I have been able to add additional entries to the dropdown meu
structure and get them to function properly. It’s trivial to be sure, but
for someone who has never programmed in Python before it’s extremely
rewarding. I don’t know which approach is better: naming the dielectric or
naming the coax. If you don’t know what the dielectric is in the coax in
question then you could be in for trouble. On the other hand, you can
ALMOST always look at the cable and retrieve an RG number or some other
manufacturer’s designation. What are your thoughts on the subject? I
would be happy to send you the source code for that section of the
program. It would at least save you all the typing.

Have a great weekend,

Larry, AE5CZ

On Sep 6, 2019, at 11:17 AM, Rune Broberg <mihtjel@...> wrote:

With the help of Ohan, there's now a 32bit standalone .exe available as
part of release 0.0.6 on Github. If you were having problems before, do
give that a go, and feel free to report any problems here, on GitHub, or
direct to me. :-)

--
Rune / 5Q5R

On Fri, 6 Sep 2019 at 18:26, Harry McGavran Jr <w5pny@...> wrote:

Hi Rune --

It's not really clear what dll "Access is denied" applies to.
The file expat.py referred to just above that error does NOT exist
and in of your zip files or anywhere else on that machine. That's
why I installed the python.org stuff on a guess that it was trying
to run python from somewhere else. I'd certainly like to find out
why it works for you.

I just tried it under my Windows 7, 64 bit under vmware on my Ubuntu

system

and I get exactly the same problem.

73 --
Harry, W5PNY

On Fri, 6 Sep 2019 at 13:01, Jeff Anderson <jca1955@...> wrote:

(Regarding S21 on a Smith Chart, I'll quote Keysight: "S21 (transmission)
plotted on a Smith chart is meaningless and not defined in any way. The
Smith chart is used to plot S11 (reflection) and extract the impedance from
that S11." --

).

I would agree

Now, regarding unwrapping of phase -- I took a look at the Matlab code for
the s2p file viewer I use (
).
The Matlab code is surprisingly simple

But proprietary

I have some code written in Mathematica which, if memory serves me
correctly, doesn’t rely on anything very specific to Mathematica. I will
post if anyone wants it

I intend sorting out improving the mechanical stability issues before I se
the init. I will do it in such a way that it would take minimal
modifications to work with a model with a bigger screen.

Dave

--

Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@...

Telephone 01621-680100./ +44 1621 680100

Registered in England & Wales.
Company number 08914892.
Registered office:
Stokes Hall Lodge,
Burnham Rd,
Althorne,
Chelmsford,
Essex,
CM3 6DT,
United Kingdom

Jeff, thank you for your suggestions.

I know that S21 measurements don't particularly make sense on a Smith
chart, but I think the display form is still somewhat useful. Would it be
more suitable to use a polar chart?

I'm not entirely sure about the unwrapping - particularly not how to
calculate it ;-) It seems doing so relies strongly on knowing the results
of earlier parts of the data.

A "notes" field would probably be useful, particularly if saved to any
exported files. Exporting files was, after all, the original purpose of the
app :D