On Fri, 4 Oct 2019 at 19:58, Rune Broberg <mihtjel@...> wrote:
Hi David,
your suggestion of interfacing with the HP 8753 is certainly interesting! I
am going to have the code reworked at some point to accept more VNA types,
so an 8753 option isn't completely impossible.
Since I want to use my NanoVNA/P, I doubt that I will use your software for
now. But it had crossed my mind that perhaps look at modifying it later -
once your rapid development had slowed. ????
As of now, though, I have no
way I would be able to test it, and that's likely to block any progress
towards it for the foreseeable future. I wouldn't want to be releasing
software that I no way to verify was actually running.
Since you intend supporting others VNAs, if the code was commented well,
and structured in such a way to give others the chance to add code for
other VNAs, others could add support for an 8753.
If you ignored setting up an 8753 (start frequency, source power,
calibration, etc) but only read the data, it would probably be easy to test
with remote access via ssh to a linux machine with an 8753 on the GPIB bus.
I have remote access at night to a 67 GHz Agilent PNA-X, with tons of
options. That is nice to play with! I only wish I owned the hardware, which
I expect is a similar cost to my house - perhaps even more so.
I don¡¯t know what information you get from the NanoVNA,
There might be someone local who has one, but barring that, I don't think
I'll work on it for now :-)
I think you have enough with the NanoVNA for now. I expect I get a
NanoVNA-F, as I want a larger screen. But I will wait for prices to fall,
as I am not in any hurry.
--
Rune / 5Q5R
On Fri, 4 Oct 2019 at 15:10, Dr. David Kirkby from Kirkby Microwave Ltd <
drkirkby@...> wrote:
On Fri, 4 Oct 2019 at 13:55, Rune Broberg <mihtjel@...> wrote:
If there are any miscalculations in my software, I do what I can to
correct
them. I have not recently been made aware of any problems, and at no
point
by Owen. I hope that any of you would immediately contact me, should
you
find errors in NanoVNA-Saver! :-)
I have not read the article by Owen, but I would agree on this single
point
about return loss. But I never commented to you, as it is a subject of
much
debate. If there was a very clear majorty for one convention or the
other,
I would stay you should go with it, but there's not a clear majority, so
use whatever you want.
If I was to use your software, which I might well do, but m interest is
in
portable use, without external software, I would probably recompile and
change the sign. My HP LCR meter allows one to display this R+jX think in
multiple formats. I could give them to you if you wanted, but again, you
know what space you have.
While I am sending you a message, there's something else I thought of
that
could be of use to many people, but you might not want to get involved
in,
so I did not bother. Your software could be useful to those of us with
the
very popular HP 8753 series VNA. It would be good if you could support
reading from them too. The Python code to open a GPIB code and read from
it
is about 5 lines long. Much of the other commands you use to set up a
NonVNA would have an equivalent in 8753.
--
Rune / 5Q5R
--
Dr David Kirkby Ph.D C.Eng MIET
Kirkby Microwave Ltd
Registered office: Stokes Hall Lodge, Burnham Rd, Althorne, CHELMSFORD,
Essex, CM3 6DT, United Kingdom.
Registered in England and Wales as company number 08914892
Tel 01621-680100 / +44 1621-680100
--
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
