Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
- Nanovna-Users
- Messages
Search
|
Re: Possible location of latest VNA source code??
You may have pressed the touch screen while adc is initializing.
It might be better to add a wait. void adc_init(void) { rccEnableADC1(FALSE); /* Calibration procedure.*/ ADC->CCR = 0; while (ADC1->CR & ADC_CR_ADEN) ; ADC1->CR |= ADC_CR_ADCAL; while (ADC1->CR & ADC_CR_ADCAL) ; ADC1->CR = ADC_CR_ADEN; while (!(ADC1->ISR & ADC_ISR_ADRDY)) ; } On Sat, Jul 27, 2019 at 04:45 AM, Lapo Pieri wrote: On Sat, Jul 27, 2019 at 04:45 AM, Lapo Pieri wrote:
|
|
Re: nano cases
Dr. David Kirkby from Kirkby Microwave Ltd
On Mon, 29 Jul 2019 at 06:17, kh6sky <kh6sky@...> wrote:
These cases look nice and fulfill a need but my tendency to spastically I agree entirely. I think any case should extend out *everything* so you never put any strain on the device apart from the screen, which I can see no way of avoiding. So I think these should be on a case 1) RF connectors - I would use N, not SMA, 2) USB 3) Toggle switch 4) Power switch For the LED, one could have 3 possibilities * Small hole * light pipe * desolder LED and run wire. For the battery, I guess one can get away with using the tracks on the If the plastic case were re-enforced around the USB connector it might help prevent disasters like mine. I personally don¡¯t think any amount of reinforcement is going to work as a long term solution. That will only delay the inevitable a while. Dave. Dave. -- Dr. David Kirkby, |
|
Re: nano cases
These cases look nice and fulfill a need but my tendency to spastically knock stuff off the bench means I will use a larger metal box with switches and connectors moved to the outer box. The power and control switches seem too delicate to last. Another reason to put the unit in a box is the delicate USB connector. If the plastic case were re-enforced around the USB connector it might help prevent disasters like mine. On my white Gecko first NanoVNA purchase, the USB connector came loose from the circuit board on the first day. This weakness was also pointed out in the documentation when the NanoVNA was sold as a kit. This was really not easy to fix as some of the traces were pulled from the board, though I did manage with some microscope aided soldering. When my black version arrives, I want to get it into a larger box as soon as I verify it works. You can purchase a small USB extender cable that mounts easily to the outer box. I bought one for my uBitX project.
Perhaps the printed case might be improved by addition of a tongue or bracket that the USB cable could be affixed to. Any sort of strain relief on that connection should be welcomed. Most of you may get by without destroying your USB connection, but for those like me suffer from the dropsies, I suggest you do something to protect that connector. Jim |
|
Locked
Re: Correct button?
You are correct and I confirmed on the big box, that is the function performed.
This turns CAL ON or OFF. Again, I suspect hp as well others, added this function as an aid to be sure the correction data sets make sense as a corrective measurement is conducted on a component. Its much easier to do this then preset the instrument and have to do a complete re calibration. Alan ________________________________ From: [email protected] <[email protected]> on behalf of alan victor <avictor73@...> Sent: Monday, July 29, 2019 1:20 AM To: [email protected] <[email protected]> Subject: Re: [nanovna-users] Correct button? Good suggestion and it does appear to toggle in that manner. Now, I have to think why I would toggle corrections ON and OFF, other than to see if the corrections ON make sense. I am not sure this is a good place to bring up the fact that the STANDARDS provided with the nanoVNA are taken, I believe, by the device and the firmware as IDEAL. Point in fact, they are NOT. Not an issue at lower frequencies unless you want to split hairs. But as you approach 900 MHz, bottom line, when measuring a component, you are not going to get the correct answer. I emailed the developer on this topic but as of now, no response. Alan ________________________________ From: [email protected] <[email protected]> on behalf of Roger Henderson <hendorog@...> Sent: Monday, July 29, 2019 1:10 AM To: [email protected] <[email protected]> Subject: Re: [nanovna-users] Correct button? I would guess it is a mode switch between: 'Apply calibration corrections' and 'Don't apply calibration corrections' This feature is present in other VNA's. Am not in front of a device to confirm it though. Regards, Roger On Mon, 29 Jul 2019 at 13:06, alan victor <avictor73@...> wrote: Good question Ernst. Let me take a look and see if I can figure it out. I |
|
Locked
Re: Correct button?
Good suggestion and it does appear to toggle in that manner.
Now, I have to think why I would toggle corrections ON and OFF, other than to see if the corrections ON make sense. I am not sure this is a good place to bring up the fact that the STANDARDS provided with the nanoVNA are taken, I believe, by the device and the firmware as IDEAL. Point in fact, they are NOT. Not an issue at lower frequencies unless you want to split hairs. But as you approach 900 MHz, bottom line, when measuring a component, you are not going to get the correct answer. I emailed the developer on this topic but as of now, no response. Alan ________________________________ From: [email protected] <[email protected]> on behalf of Roger Henderson <hendorog@...> Sent: Monday, July 29, 2019 1:10 AM To: [email protected] <[email protected]> Subject: Re: [nanovna-users] Correct button? I would guess it is a mode switch between: 'Apply calibration corrections' and 'Don't apply calibration corrections' This feature is present in other VNA's. Am not in front of a device to confirm it though. Regards, Roger On Mon, 29 Jul 2019 at 13:06, alan victor <avictor73@...> wrote: Good question Ernst. Let me take a look and see if I can figure it out. I |
|
Locked
Re: Correct button?
I would guess it is a mode switch between: 'Apply calibration corrections'
toggle quoted message
Show quoted text
and 'Don't apply calibration corrections' This feature is present in other VNA's. Am not in front of a device to confirm it though. Regards, Roger On Mon, 29 Jul 2019 at 13:06, alan victor <avictor73@...> wrote:
Good question Ernst. Let me take a look and see if I can figure it out. I |
|
Locked
Re: Correct button?
Good question Ernst. Let me take a look and see if I can figure it out. I have a guess that it may have to do with the fact that the standards, open, short, load are NOT perfect. But... the softkey selection does not lead to additional menu selection. So far now, it appears to be a PLACE HOLDER for further work.
Alan ________________________________ From: [email protected] <[email protected]> on behalf of dk1vi <dk1vi@...> Sent: Sunday, July 28, 2019 11:44 PM To: [email protected] <[email protected]> Subject: [nanovna-users] Correct button? Hi, what is the purpose of the "CORRECT" button in the calibration menu? I have not read anything about it or did I miss something? Ernst |
|
Re: LabView Interface
Joe Smith
I uploaded a short video clip showing the current status of my LabView interface.? It's not ready for prime time yet.?
toggle quoted message
Show quoted text
Link is on the EEVBLOG site, same as before. On Saturday, July 27, 2019, 8:34:11 PM CDT, Joe Smith via Groups.Io <joeqsmith49@...> wrote:
I now have both channels sorted out.? Took a little time away from the project? to have a fresh look.?? I've posted a couple of updated pictures.?? There still some work to do but the basics are working now.? "www.eevblog.com/forum/rf-microwave/nanovna-custom-software/new/#new" NanoVNA Custom Software - Page 1 | | |? | NanoVNA Custom Software - Page 1 NanoVNA Custom Software - Page 1 | | | ? ? On Friday, July 26, 2019, 12:08:06 PM CDT, Joe Smith via Groups.Io <joeqsmith49@...> wrote: ? I started to look at the "data 1" array to implement S21.?? So far, no luck.? Like the "data 0" array, it appears to send two different arrays that are interlaced.? ? One thing I did run into when I first tried it, the communications was not reliable. ? It seems that sending the two commands "data 0 data 1" too quickly can cause the VNA some distress.? Adding some delay between commands appears to have solved it. ?? ? On Wednesday, July 24, 2019, 4:15:55 PM EDT, Joe Smith via Groups.Io <joeqsmith49@...> wrote: ? Thanks for taking the time to dig up all those links.??? The first link uses the included Smith chart.? This is what I show in my screen shot.?? This works but I really want some basic features like cursors.??? The others appear to use the same method I have done in the past, basically overlaying graphics on an X-Y.?? This is the direction I am planning once again as looking at NI's site, it appears they have nothing new to offer.?? ? On Wednesday, July 24, 2019, 3:38:11 PM EDT, Larry Rothman <ac293@...> wrote: Would this help? An Old Friend in New Clothes:Smith Charts in LabVIEW ? Proceedings of the 2013 ASEE North Central Section Conference ? Copyright ? 2013, American Society for Engineering Education OFNC1 ? ? There are also: ? ? ? ? ? I hope these help you and others. Cheers, Larry |
|
Locked
Correct button?
Hi,
what is the purpose of the "CORRECT" button in the calibration menu? I have not read anything about it or did I miss something? Ernst |
|
Re: Build timestamp as proxy for FW build version
We could do with better documentation on this device eg the wiki. If
toggle quoted message
Show quoted text
features/behaviours are different between builds they'll need documenting and users will need to know which version they have to understand the documentation fully. In addition users will be better informed if newer, hopefully improved, builds become available. Mike On Sun, 28 Jul 2019, 18:43 Dave Daniel, <kc0wjn@...> wrote:
I should have asked what is the problem for which a solution is being |
|
Re: Build timestamp as proxy for FW build version
I should have asked what is the problem for which a solution is being sought?
toggle quoted message
Show quoted text
DaveD Sent from a small flat thingy On Jul 28, 2019, at 13:01, Mike Brown <mbmail@...> wrote: |
|
Re: Build timestamp as proxy for FW build version
Well, build timestamp and the file set used in the build are not necessaily correlated. One could build the code repeatedly using the same files; each build will have a different timestamp. It is more or less true, though, that it would be difficult to create two builds with different file sets that have exactly the same timestamp.
toggle quoted message
Show quoted text
Version control is really the only method that works reliably. Many, many engineers have westled with the question of how to provide SCM for many decades. So far, we are still using SCM tools to manage version control. DaveD Sent from a small flat thingy On Jul 28, 2019, at 13:01, Mike Brown <mbmail@...> wrote: |
|
Build timestamp as proxy for FW build version
Apologies if this has already been suggested but pressing the FW info
button in NanoVNA 1.03 returns information on the Nano's firmware, including build 'time'. Might the build timestamp be usable as a way to tell the different versions apart? As a starter, my NanoVNA is a 2-trace 900MHz antenna analyser with build time May 5 2019 - 08:35:00. Best regards Mike ---------- Forwarded message --------- From: Michael Brown <mike.g4raa@...> Date: Sun, 28 Jul 2019, 17:53 Subject: NanoVNA FW info 2-trace 900MHz Antenna Analyser To: mbmail@... <mbmail@...> Attached Sent from Mail <> for Windows 10 |
|
Diles, Folders and Wikis on the nanovna group
All,
I have enabled files, photos and wikis for this group. You should be able to upload files and photos and create wikis now. Please, please, create subfolders when you upload files or photos. For single files or photos which do not warrant their own subfolder, I have created subfolders named "Miscellaneous". The Photos folder contains 110 photos which are those attached to previous posts (groups,io did this automatically). If anyone has questions about these, or discovers a problem, please let me know. DaveD |
|
Re: Suggestion to have a wiki
Since groups.io has a built in wiki: using that one seems like a path of
toggle quoted message
Show quoted text
least resistance... The list owner just has to enable it. Neil On Sat, Jul 27, 2019, 18:14 Dave Daniel <kc0wjn@...> wrote:
Ok, with what do you agree? It¡¯s not clear from your post whether you |
|
Re: LabView Interface
Joe Smith
I now have both channels sorted out.? Took a little time away from the project? to have a fresh look.?? I've posted a couple of updated pictures.?? There still some work to do but the basics are working now.?
toggle quoted message
Show quoted text
"www.eevblog.com/forum/rf-microwave/nanovna-custom-software/new/#new" NanoVNA Custom Software - Page 1 | | | | NanoVNA Custom Software - Page 1 NanoVNA Custom Software - Page 1 | | | On Friday, July 26, 2019, 12:08:06 PM CDT, Joe Smith via Groups.Io <joeqsmith49@...> wrote:
I started to look at the "data 1" array to implement S21.?? So far, no luck.? Like the "data 0" array, it appears to send two different arrays that are interlaced.? ? One thing I did run into when I first tried it, the communications was not reliable. ? It seems that sending the two commands "data 0 data 1" too quickly can cause the VNA some distress.? Adding some delay between commands appears to have solved it. ?? ? On Wednesday, July 24, 2019, 4:15:55 PM EDT, Joe Smith via Groups.Io <joeqsmith49@...> wrote: ? Thanks for taking the time to dig up all those links.??? The first link uses the included Smith chart.? This is what I show in my screen shot.?? This works but I really want some basic features like cursors.??? The others appear to use the same method I have done in the past, basically overlaying graphics on an X-Y.?? This is the direction I am planning once again as looking at NI's site, it appears they have nothing new to offer.?? ? On Wednesday, July 24, 2019, 3:38:11 PM EDT, Larry Rothman <ac293@...> wrote: Would this help? An Old Friend in New Clothes:Smith Charts in LabVIEW ? Proceedings of the 2013 ASEE North Central Section Conference ? Copyright ? 2013, American Society for Engineering Education OFNC1 ? ? There are also: ? ? ? ? ? I hope these help you and others. Cheers, Larry |
|
Re: Case for black VNA
I just looks at the 2 units I have (A black one from Alan). The SMA spacing is the same, the the biggest difference on the SMA end, is the spacer size. This makes the cases different
toggle quoted message
Show quoted text
On 7/27/2019 4:48 AM, Mike Brown wrote:
Just got my calipers out in case a few measurements would be helpful. My |
|
Re: Suggestion to have a wiki
Ok, with what do you agree? It¡¯s not clear from your post whether you think we need a wiki or not.
toggle quoted message
Show quoted text
Just to be clear, I don¡¯t have a problrm with having a wiki. But someone will have to create it and administer it. That will probably be time intensive. DaveD Sent from a small flat thingy On Jul 27, 2019, at 20:43, Jeremy Dunman W1BO <jeremy@...> wrote: |
to navigate to use esc to dismiss