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NanoVNASaver -- save points?

 

Hey dr ops.

When I calibrate NanoVNA with NanoVNASaver and save the data, will it be loaded automaticaly if I start NanoVNASaver again?
And: Is there a transfer between NanoVNASaver and NanoVNA save slot 0?
If not: Can we have a "save to NanoVNA slot 0" button?
If not: Why not?

:)

73 de DE8MSH
 

Hello, I thougt abiut that too for a while.

IT would be ideal if SaverSw would be extended such that it could recall all four Cal Data in the nanaovna decice.

I am using different fixtures, all calibrated individually and stored in nanovna decice and again also in SaverSw.

Once I change fixture I need to recall the corresponding Calibration Data in SaverSw AND in the naoanvna device.
This is doable, but it would be great if one could combine that all via SaverSw.

Don't know if there is a USB command available in nanaovna device for recalling a individual Cal data-set ?
 

The nanoVNA-Saver does not automatically load previously saved data, but you can create a lot of calibration data yourself and download it as a calibration data before use.
You can comment on the saved data and read it after loading.
Hardware can do limited things due to its limited memory.
This is expanded by the nanoVNA-Saver.
Successful use.


Gyula, HA3HZ
 

Hello DE8MSH,
Thank you for your comments and your suggestions!

Currently, NanoVNA-Saver has no interaction with the calibration on the
NanoVNA itself. The application assumes that you have a calibration on the
NanoVNA covering at least the span of frequencies read - in order to put
the readings in the expected span of values, or at least close to that span.

The calibration you can do in NanoVNA-Saver is a further calibration to
refine the accuracy and to allow more than 101 data points, and it is not
saved on the NanoVNA, but it is possible to save it as files (I use the
extension ".cal").

The NanoVNA firmware does not offer a way to write calibration data to it.
It does allow triggering the short/open/load/isolation/through functions
for calibration on the device, but this is not currently utilized by
NanoVNA-Saver.

I am looking into running the NanoVNA in uncalibrated mode, and purely
handling the calibration in NanoVNA-Saver, in order to save the step of
calibrating the NanoVNA itself for those users who purely use it when
connected to a computer.

NanoVNA-Saver does not currently load the previous calibration. This is a
deliberate design choice, as the calibration is heavily dependent on what
cables, connectors etc. are used with the NanoVNA, and I would rather not
load any calibration than load a wrong calibration and display completely
erroneous data. So currently, NanoVNA-Saver by default shows the same data
as is displayed on the NanoVNA itself.

I hope these comments explain some of the reasons why things currently are
as they are. :-)
--
Rune / 5Q5R

On Mon, 25 Nov 2019 at 06:39, <de8msh@...> wrote:

Hey dr ops.

When I calibrate NanoVNA with NanoVNASaver and save the data, will it be
loaded automaticaly if I start NanoVNASaver again?
And: Is there a transfer between NanoVNASaver and NanoVNA save slot 0?
If not: Can we have a "save to NanoVNA slot 0" button?
If not: Why not?

:)

73 de DE8MSH
 

Hey dr op 5QR5.

Okay. That explains a lot :).

But: I think a "X" for load last .cal file would be okay. A textbox can show the filename of last .cal file.

What do you think?
 

Hi Rune,
when you raise a nice fat pig from a small pig, there will always be someone who does not like why they are not smart enough. :? :?

It was just a joke, sorry.

73, Gyula
 

Hi Rune,

Again, I would like it very much when "uncalibrated" or? the description of the active calibration-file is shown in the MAIN window, to avoid confusion while working.

Jos


Op 25-11-2019 om 09:26 schreef Rune Broberg:

Hello DE8MSH,
Thank you for your comments and your suggestions!

Currently, NanoVNA-Saver has no interaction with the calibration on the
NanoVNA itself. The application assumes that you have a calibration on the
NanoVNA covering at least the span of frequencies read - in order to put
the readings in the expected span of values, or at least close to that span.

The calibration you can do in NanoVNA-Saver is a further calibration to
refine the accuracy and to allow more than 101 data points, and it is not
saved on the NanoVNA, but it is possible to save it as files (I use the
extension ".cal").

The NanoVNA firmware does not offer a way to write calibration data to it.
It does allow triggering the short/open/load/isolation/through functions
for calibration on the device, but this is not currently utilized by
NanoVNA-Saver.

I am looking into running the NanoVNA in uncalibrated mode, and purely
handling the calibration in NanoVNA-Saver, in order to save the step of
calibrating the NanoVNA itself for those users who purely use it when
connected to a computer.

NanoVNA-Saver does not currently load the previous calibration. This is a
deliberate design choice, as the calibration is heavily dependent on what
cables, connectors etc. are used with the NanoVNA, and I would rather not
load any calibration than load a wrong calibration and display completely
erroneous data. So currently, NanoVNA-Saver by default shows the same data
as is displayed on the NanoVNA itself.

I hope these comments explain some of the reasons why things currently are
as they are. :-)

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