Re: How about using a USB memory stick instead of an SD card
#features
On 12/9/21 10:14 AM, Chris Gardner via groups.io wrote: Greetings, Thank you for that information. But, I am not clear as to how to initiate an connection to,?and or the ability to exchange data to and from the SD Card which is installed into the NanoVna_H4?which I have. I did not notice any change of the device screen indicating a connection was now possible.?Also, I didn't notice any fields located in NanoVNA-saver application on my windows 10 PC. Must I install,?or re-install device firmware in order to affect the change that I have made by accessing the card slot.?Thank You
The NanoVNA has two "interfaces" - one is the touch screen, the other is the serial port over USB.? So there's lots of functions available by sending serial commands and getting responses back (as DiSLord illustrated) that aren't available from the touch screen. NanoVNA-Saver probably hasn't been updated to incorporate this new functionality.
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Re: How about using a USB memory stick instead of an SD card
#features
Any NanoVNA can control from CPU
Software like NanoVna Saver or NanoVNA-App open com port connection and send commands
You or any programmer can update exist / write new software for SD card access
Just use this commands
At this moment this software not exist, but I hope there is an author who implements this option
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Advice: When in doubt, calibrate.......
Besides, the whole cal. procedure is relatively insignificant in time.
Even using the HP 8753C, I calibrate every time I want to measure my latest
"brain fart".
Dave - W?LEV
Dave - W?LEV
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On Thu, Dec 9, 2021 at 2:41 PM Joe WB9SBD <nss@...> wrote: When you do a Calirate say between 3.5 and 4 Mhz, and save it.
Now next time you power the unit up (NanoVNA-H4)
And choose that saved profile, is that calibration still valid?
Or should you do it every time you power the unit up?
AND
OK again say you calibrate it between 7.0 and 7.3 Mhz. and save it to
another slot.
Now between 7.0 and 7.3 it is calibrated.
But say you temporarily need to look a little wider, say 6 to 8 Mhz.
So you widen the stimulus window.
Now is the 7.0 to 7.3 still calibrated, and the areas out side close but
not?
Joe WB9SBD
--
*Dave - W?LEV*
*Just Let Darwin Work*
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Re: How about using a USB memory stick instead of an SD card
#features
Greetings, Thank you for that information. But, I am not clear as to how to initiate an connection to,?and or the ability to exchange data to and from the SD Card which is installed into the NanoVna_H4?which I have. I did not notice any change of the device screen indicating a connection was now possible.?Also, I didn't notice any fields located in NanoVNA-saver application on my windows 10 PC. Must I install,?or re-install device firmware in order to affect the change that I have made by accessing the card slot.?Thank You
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On Thursday, December 9, 2021, 10:59:54 AM EST, DiSlord <dislordlive@...> wrote:
My NanoVNA? H/H4 fw support commands for SD card access, so some one can write software for work.
sd_list {pattern}
sd_read {filename}
sd_delete {filename}
Commands:
sd_list {pattern}
example get all files list
sd_list
or
sd_list *.*
Read s1p list
sd_list *.s1p
Read bmp list
sd_list *.bmp
Read s1p and s2p list
sd_list *.s?p
Read *.bin list
sd_list *.bin
Log {filename} {size}
18.238 rx: ch>
18.241 tx: sd_list *.bmp
18.243 rx: sd_list *.bmp
18.246 rx: sd_list:
18.250 rx: VNA_000004.bmp 153670
18.253 rx: VNA_00000C.bmp 153670
18.256 rx: VNA_210721_210606.bmp 307270
18.258 rx: VNA_000077.bmp 153670
18.261 rx: VNA_000114_212649.bmp 307322
18.300 rx: VNA_000119_233142.bmp 307322
18.303 rx: VNA_000119_233204.bmp 307322
18.306 rx: VNA_000119_233223.bmp 307322
18.309 rx: VNA_000122_082125.bmp 307322
18.312 rx: VNA_000129_085002.bmp 307322
18.315 rx: VNA_000129_085132.bmp 307322
18.318 rx: VNA_000129_085345.bmp 307322
18.321 rx: VNA_000129_085607.bmp 307322
18.323 rx: VNA_000129_091616.bmp 307322
18.326 rx: VNA_000129_091818.bmp 307322
18.361 rx: VNA_000301_213820.bmp 307322
18.364 rx: VNA_201129_081345.bmp 307322
18.368 rx: VNA_201129_081351.bmp 307322
18.371 rx: VNA_201129_081357.bmp 307322
18.374 rx: ch>
For read file need
sd_read {filename}
After nano return binary file data
or on error
"err: no file\r\n"
Delete file:
sd_delete {filename}
After nano delete it from SD card:
Output
shell_printf("delete: %s %s\r\n", filename, res == FR_OK ? "OK" : "err");
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Re: Missing File or module?
Not sure but perhaps install the win 10 dev kit as suggested under the windows usage notes for pyinstaller here:
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Re: How about using a USB memory stick instead of an SD card
#features
My NanoVNA H/H4 fw support commands for SD card access, so some one can write software for work.
sd_list {pattern}
sd_read {filename}
sd_delete {filename}
Commands:
sd_list {pattern}
example get all files list
sd_list
or
sd_list *.*
Read s1p list
sd_list *.s1p
Read bmp list
sd_list *.bmp
Read s1p and s2p list
sd_list *.s?p
Read *.bin list
sd_list *.bin
Log {filename} {size}
18.238 rx: ch>
18.241 tx: sd_list *.bmp
18.243 rx: sd_list *.bmp
18.246 rx: sd_list:
18.250 rx: VNA_000004.bmp 153670
18.253 rx: VNA_00000C.bmp 153670
18.256 rx: VNA_210721_210606.bmp 307270
18.258 rx: VNA_000077.bmp 153670
18.261 rx: VNA_000114_212649.bmp 307322
18.300 rx: VNA_000119_233142.bmp 307322
18.303 rx: VNA_000119_233204.bmp 307322
18.306 rx: VNA_000119_233223.bmp 307322
18.309 rx: VNA_000122_082125.bmp 307322
18.312 rx: VNA_000129_085002.bmp 307322
18.315 rx: VNA_000129_085132.bmp 307322
18.318 rx: VNA_000129_085345.bmp 307322
18.321 rx: VNA_000129_085607.bmp 307322
18.323 rx: VNA_000129_091616.bmp 307322
18.326 rx: VNA_000129_091818.bmp 307322
18.361 rx: VNA_000301_213820.bmp 307322
18.364 rx: VNA_201129_081345.bmp 307322
18.368 rx: VNA_201129_081351.bmp 307322
18.371 rx: VNA_201129_081357.bmp 307322
18.374 rx: ch>
For read file need
sd_read {filename}
After nano return binary file data
or on error
"err: no file\r\n"
Delete file:
sd_delete {filename}
After nano delete it from SD card:
Output
shell_printf("delete: %s %s\r\n", filename, res == FR_OK ? "OK" : "err");
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Hi Joe, Anything that is saved is stored for future use. Once you've chosen a range to calibrate, you can turn the NanoVNA off and then just recall the stored calibration. As far as needing a wider range, I'm not sure, but it would be best just to calibrate it for the new range. 73, Zack W9SZ On Thu, Dec 9, 2021 at 8:41 AM Joe WB9SBD <nss@...> wrote: When you do a Calirate say between 3.5 and 4 Mhz, and save it.
Now next time you power the unit up (NanoVNA-H4)
And choose that saved profile, is that calibration still valid?
Or should you do it every time you power the unit up?
AND
OK again say you calibrate it between 7.0 and 7.3 Mhz. and save it to
another slot.
Now between 7.0 and 7.3 it is calibrated.
But say you temporarily need to look a little wider, say 6 to 8 Mhz.
So you widen the stimulus window.
Now is the 7.0 to 7.3 still calibrated, and the areas out side close but
not?
Joe WB9SBD
<> Virus-free. www.avg.com <> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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When you do a Calirate say between 3.5 and 4 Mhz, and save it.
Now next time you power the unit up (NanoVNA-H4)
And choose that saved profile, is that calibration still valid?
Or should you do it every time you power the unit up?
AND
OK again say you calibrate it between 7.0 and 7.3 Mhz. and save it to another slot.
Now between 7.0 and 7.3 it is calibrated.
But say you temporarily need to look a little wider, say 6 to 8 Mhz.
So you widen the stimulus window.
Now is the 7.0 to 7.3 still calibrated, and the areas out side close but not?
Joe WB9SBD
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Re: How about using a USB memory stick instead of an SD card
#features
Use a toe nail clipper and a nail file? -? ;-)
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On Thursday, December 9, 2021, 09:08:19 a.m. EST, Robb Cole N2VJO <robbnterri@...> wrote:
Thx Larry...? At least it¡¯s been considered.? Back to figuring out how to ¡°hog out¡± the opening for the SD card in my nano VNA-H4 case.. :(
--
Regards,
Robb N2VJO
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Re: How about using a USB memory stick instead of an SD card
#features
Thx Larry... At least it¡¯s been considered. Back to figuring out how to ¡°hog out¡± the opening for the SD card in my nano VNA-H4 case.. :(
--
Regards,
Robb N2VJO
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Re: How about using a USB memory stick instead of an SD card
#features
Won't work - the Nano is a USB CLIENT.
You need to have a USB HOST port in order to plug in a memory stick.
This has been discussed before in the forum.
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On Wednesday, December 8, 2021, 09:29:52 p.m. EST, Robb Cole N2VJO <robbnterri@...> wrote:
A quick check on Amazon shows a simple USB female-to-female connector (set of two, actually) costs about $6.? One of those and the existing cable that comes with the NanoVNA gets you ¡°on the air¡± (assuming you have a USB memory stick, which they seem to be handing out in cereal boxes these days ?).
--
Regards,
Robb N2VJO
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Re: How about using a USB memory stick instead of an SD card
#features
A quick check on Amazon shows a simple USB female-to-female connector (set of two, actually) costs about $6. One of those and the existing cable that comes with the NanoVNA gets you ¡°on the air¡± (assuming you have a USB memory stick, which they seem to be handing out in cereal boxes these days ?).
--
Regards,
Robb N2VJO
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Re: How about using a USB memory stick instead of an SD card
#features
Great idea Robb
... or alternatively, make the internally installed SD card readable via the USB interface. No case modification would be required.
--
73
Gary, N3GO
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How about using a USB memory stick instead of an SD card
#features
How about an off-the-wall suggestion from a newbie?
How hard would it be to use a USB memory stick on the already existing USB port? If that is feasible, then all users need do is buy an appropriate USB-female to USB-C cable..
Just thinking out loud...
--
Regards,
Robb N2VJO
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Re: Where to buy a NanoVNA H4 HW rev 4.3?
Is there anywhere in the UK I can get an authentic version please?
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Hi to all.
I had problems getting an SAA-2N using vna-saver running on windows 10, specifically it would not connect to the USB port. I solved that, and having used the vna saver on my new laptop I decided to use it in the workshop on my old Win-7 machine.
The problem is the nanovna-saver exe wont run past flashing up a dos window with what I presume is the ini files and an error message. This screen stays visible for less then a second and I came up with the idea of videoing the screen at run time to capture the image which I enclose.
Can anyone advise what program or module is missing that prevent the nanovna saver running?
My win version is 7 pro with SP1, and C++ loaded. The vna is V2_2 build time October 2020
cheers
joe
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Yes, that is correct. On Wed, Dec 8, 2021, 6:41 AM Steven Bailey via groups.io <sbailey64= [email protected]> wrote: Sorry Donald...somehow I conflated Donald into Doug.
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Sorry Donald...somehow I conflated Donald into Doug.
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Hi Doug,
So the null gain (in -DB) will not be accurate but the frequency of the null will be accurate...if I do no calibration?
Thanks,
Steve
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Steven: Taking this further, if you are just looking for a return loss null, such as for tuning a magnetic loop to a given frequency, you don't even need to do any calibration, as the frequency will be accurate even if the measurement is not.
73, Don N2VGU
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Dave Johnson
Robb Cole N2VJO
Donald S Brant Jr