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So it's not important to clear the memory?
How to use?
For other questions, what can you tell me?

Herb,
there appears to be both a "NanoVNA-H V2" and a (completely unrelated)
"NanoVNA 2" project. The latter project hasn't been very responsive to
questions about who they are, and just seem to have tagged onto the name
because of its popularity.

--
Rune / 5Q5R

On Thu, Oct 3, 2019 at 05:33 PM, Dr. David Kirkby from Kirkby Microwave Ltd wrote:

To now there are two options
* $28 for a board that will wear out after about 20 connections. (Date from
Hirose datasheet)
* $6 for one which will last 500 matings (Generally accepted lifetime of
SMAs)

Or three... Fit a RCA/0.1" pins/BNC/SO239/SMA (depends what freq range and what is to hand) to either side of a pcb and the DUT (Device Under Test) in between.
Even less than $6 probably assuming you have the PCB etc.
Before comments made about not using SMA yes I 100% understand you are not going to get ?100K kit/lab grade results with a couple old RCA either side of a random bit of PCB, indications probably at best, but then this is a ?50 device in the first place so got to set expectations perhaps? Think I made up and tested 1st HF BPF when and M3 using two RCA (with an expensive VNA) so I know it works, sort of.

72
Dom
M1KTA

Thanks hwalker !!
So the Hugen hardware schematics () *should* be that of the cards currently on the market?

Diego

Where is it?

Rob,
Your question was answered in the other topic where you asked it. Duplicating questions in different topics is bad etiquette.

Herb

Pluto,
Hugen retailed the first NanoVNA based on edy555's open source design. It is the hardware version that is currently being marketed by all NanoNA clone manufacturers. In response to a request from edy555, Hugen has changed the name of his unit from NanoVNA. to NanoVNA-H to distinguish it from the other clone units. Hugen has said he will be offering an updated unit in mid October that has a case but the hardware design appears to be unchanged. A NanoVNA-H V2 is slated for release in 2020. Search this board for "NanoVNA-H V2" for info on it. A RTOS version, called the NanoVNA-F is now being sold, but it is a different beast.

Herb

I would like to update my NanoVNA 2.8"TFT with the Gecko-logo, color whide.

1) Where I find the flash-program?
2) Which files should I use for to clean (Only DMR-CLEAR_MEMORY_DFU.dfu?)?
3) Which firmware version do you recommend?

Info Hardware:
Kernel: 4.0.0
Compiler: GCC 5,4,1 20160919
Architecture: ARMv6-M
Core Variant: Cortex-M0
Port Info: Preemption thorough NMI
Platform: STM32FxB Entry Level Medium Density devices
Board: NanoVNA
Build time: May 5 2019 - 80:35:00

Thanks
Rob

Rob,
The DMR-CLEAR_MEMORY_DFU.dfu writes "FF" to each memory location and is only used to clear memory prior to loading a new firmware. Larry has been kind enough to put all the current and past firmware at : /g/nanovna-users/wiki/home under the "Firmwares" section.

Links to the flash utility and instructions for it's use, as well as various other user guides, can be found here: /g/nanovna-users/wiki/User-Guides .

The Wiki and Files sub section of this group are a great resource and will answer a lot of questions for any new user of the NanoVNA.

Herb

Hello everyone !
Is there anyone who can clarify the hardware versions?
To my knowledge, the first version is that of ttrftech (edy555) .
Subsequently the version of hugen79 was introduced .
Which version is sold now? I imagine that of hugen79. Is the ttrftech version still on the market?
And are there others?

Diego - I8TIF

What files should I use?
Only DMR-CLEAR_MEMORY_DFU.dfu ?
Where I find the flash-program?

I would like to go around my NanoVNA 2.8"TFT with the Gecko-logo, color whide.
Info Hardware:
Kernel: 4.0.0
Compiler: GCC 5,4,1 20160919
Architecture: ARMv6-M
Core Variant: Cortex-M0
Port Info: Preemption thorough NMI
Platform: STM32FxB Entry Level Medium Density devices
Board: NanoVNA
Build time: May 5 2019 - 80:35:00

Thanks
Rob

Jim,
Larry pulled his original PDF document in favor of this link, /g/nanovna-users/wiki/shellcommands .

Herb

What files should I use?
Only DMR-CLEAR_MEMORY_DFU.dfu ?
Where I find the flash-program?

I would like to go around my NanoVNA 2.8"TFT with the Gecko-logo, color whide.
Info Hardware:
Kernel: 4.0.0
Compiler: GCC 5,4,1 20160919
Architecture: ARMv6-M
Core Variant: Cortex-M0
Port Info: Preemption thorough NMI
Platform: STM32FxB Entry Level Medium Density devices
Board: NanoVNA
Build time: May 5 2019 - 80:35:00

Thanks
Rob

On Wed, Sep 25, 2019 at 12:17 PM, Larry Rothman wrote:

Markers: outputs: marker#, index#, frequency. What is the 'index' number

Index is the number of the point [0-100]

Capture: this is a new command. What does it do? If you run it in the console,

Dumps the screen content so you can make a "screenshot"

Sample: samples gamma, ampl or ref - how is it used?

sampe [gamma|ref|ampl]
select the data to be measured:
gamma: amplitude / reference signal, this is what you want, do not use the others
ref: measure the absolute strength of the reference signal
ampl: measure the absolute strength of the bridge/CH1 signal

Time: is still there and increments the counter - but how can it be set to

Can not be set, it is the Linux "time" command
Usefull only if you have a RTC in the system

DAC: does the dac variable control the DSP gain

No, it seems to set the output voltage of an analog output of the STM
The adc gain is automatic set depending the selected frequency

If you want to build a clone of the sdr-kits *Testboard*,
and have no experience with the *2.54 mm round Female Pin Header Socket*,
here a link to a cheap source:
$ 1.33 for 5 x 40 pin sockets


You can use those *pin sockets*
also as *pin headers*, and also as a *carrier for parts to measure*,
either by plugging in, or soldered.

So, they are very universal to use.

A good explanation for a 68 pF capacitor measurement with the nanoVNA:
/g/nanovna-users/message/3865

73, Rudi DL5FA

Thanks Brian,
It shows that you cannot arbitrarily use any sweep parameters, like what I did in my fist attempt (50K-300MHz).
I'll be making more measurements...
Paul

Thanks Larry, but I already mentioned in my post that I fully calibrated the VNA with the fixture attached.

What good does that do?
Mike WY6K


"... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..."

Larry, I can't find the Console Command pdf New name? Folder?
Thanks,
Jim, KA6TPR