On Mon, Dec 7, 2020 at 01:40 PM, Leighton wrote:
Hi DiSlord,
That is true, it is a big ask and I did consider that as being an issue.
I have tried a couple of calibrations 50k to 2M and 1M to 900M.
The lower frequency range still seems a little wild. This didn't seem to be
the case before.
I have attached an image of the lower frequency range.
Any thoughts?
Thanks,
Leighton
Reset calibration, if you not see noise, then problem in LOAD from calibration set, or in bad connection on CH0, check it.
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Re: Just opened the box and charged the unit now all I get is a white screen!!!!!
Mel, That is exactly what happens if one shorts the boot contacts next to the battery connector when switching on. Therefore, check that the boot contacts are not shorted. Stefan. On Mon, Dec 7, 2020 at 9:11 PM stefan baartman via groups.io <seb21051= [email protected]> wrote: Check that the Boot contacts aren't shorted . . .
On Mon, Dec 7, 2020 at 7:24 PM Mel Farrer via groups.io <farrerfolks=
[email protected]> wrote:
Should have said that this my third one for a Christmas gift. What I am
asking is there a HARD reset on the PCB?
Thanks.
Mel, K6KBE
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I am not the best at using terminal, but, to the best of my knowledge, I've done all that I am supposed to do to get to the NanoVNA-Saver executable and I STILL cannot get a .dmg file. Anybody have a step-by-step for Dummies? I have a MacBook Pro and my OS version is 11.0.1.
Many thanks,
Dee K7UD
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Re: Just opened the box and charged the unit now all I get is a white screen!!!!!
Check that the Boot contacts aren't shorted . . . On Mon, Dec 7, 2020 at 7:24 PM Mel Farrer via groups.io <farrerfolks= [email protected]> wrote: Should have said that this my third one for a Christmas gift. What I am
asking is there a HARD reset on the PCB?
Thanks.
Mel, K6KBE
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Having retired after 40 years in the telecom industry I can attest to this.
We used to design and build our own systems. Now all applications reside on third party cloud computing platforms.
Another change is because of rapidly changing technology there is little documentation; the documentation available is out of date. They new engineer hires however knew to find information. learning the theory and figuring out how it use the NanoVNA would be second nature for them.
My last job was with a large R&D lab. Most of the EE's who learned and played with electronics were foreign born. The only engineer on my team who built crystal sets or played with a 555 timer was from India.
Got to get back to the rocking chair...
Mike N2MS
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On 12/07/2020 1:56 PM Larry Rothman <nlroth@...> wrote:
Yup, everything is computer and software-centric these days for college and university students.
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Re: NanoVNA WINDOWS OR ANDROID SOFTWARE
Hi Clyde, Piero, and othersJust to put a word in about Saver 0.3.8 and FW ver 1.0.39, I have not had any problems getting them to work together. NanoVNA-H4, Win 10 Pro latest update on a Dell Tower with 4MB RAM and a 2.6GHz Intel Dual-core CPU, USB 2.0, standard USB cable provided. Check your settings, try another USB port, check Device manager, and try again.?*** Walt *** WA7SDY ***
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On Monday, December 7, 2020, 03:38:06 PM PST, Clyde Lambert <clyde.lambert@...> wrote:
Hello Piero,
I was using NanoVNA H firmware, 1.0.39.dfu FW and? nanovna-saver 0.3.8
This combo did not work. I could not get the Software to recognize the VNA no mater what I tried.
Even though the FW had a setting to select between USB and Bluetooth serial, it would not work.
I switched the Firmware to
NanoVNA-H- UART.dfu.
I am still using nanovna-saver 0.3.8
The saver Software connects to my NanoVNA-H with 2.8 screen and runs OK. I am also running a Windows 10
Laptop.
The one problem I have found with nanovna saver 0.3.8, is it takes about 15 to 30 seconds for it to boot on my PC.
73's
Clyde KC7BJE
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Re: Setting up NanoVNA-H for First Use
The Cal 0 location is loaded when you restart, so to save a particular Trace setup, just do CAL/SAVE 0 if you want to automatically start with that setup. It will be saved with whatever calibration is in effect at that point.
--John Gord
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On Mon, Dec 7, 2020 at 04:39 PM, S Johnson wrote:
OK, viewed the videos and now have the firmware updated to Hyugun's last, Feb
2020. Things working as expected, however:
1. My NanoH4 saves the scan start and stop frequencies OK, so when I turn the
unit off and on again they are still there. But it doesn't save the Trace
selections. I have to delete unwanted traces and format the desired ones anew
each time. Is that normal?
2. The NAnoSaver program to view data on a PC screen detects the NanoVNA when
connected and powered on, but no other Nanosaver command seems to have an
effect. For example, I can't set traces or scan start/stop frequencies from
the Nanosaver PC program. Is there some simple thing I am missing?
3. For the Nano Scale command, is there any command that labels the scale
values on the display? IN other words, puts 1.0, 1.25, 1.5 etc up the Y axis
and the frequencies along the X-axis? I know I c am move the marker around to
see the frequency, but am wondering if there is a way to label the X and Y
axes with values.
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Re: Setting up NanoVNA-H for First Use
OK, viewed the videos and now have the firmware updated to Hyugun's last, Feb 2020. Things working as expected, however:
1. My NanoH4 saves the scan start and stop frequencies OK, so when I turn the unit off and on again they are still there. But it doesn't save the Trace selections. I have to delete unwanted traces and format the desired ones anew each time. Is that normal?
2. The NAnoSaver program to view data on a PC screen detects the NanoVNA when connected and powered on, but no other Nanosaver command seems to have an effect. For example, I can't set traces or scan start/stop frequencies from the Nanosaver PC program. Is there some simple thing I am missing?
3. For the Nano Scale command, is there any command that labels the scale values on the display? IN other words, puts 1.0, 1.25, 1.5 etc up the Y axis and the frequencies along the X-axis? I know I c am move the marker around to see the frequency, but am wondering if there is a way to label the X and Y axes with values.
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Re: Just opened the box and charged the unit now all I get is a white screen!!!!!
Should have said that this my third one for a Christmas gift. What I am asking is there a HARD reset on the PCB?
Thanks.
Mel, K6KBE
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Re: How to go to the FILE or WIKI page?
Hello Kees,
I tried each of the links you provided, and was directed to the correct file pages each time.
Not sure why you are experiencing a problem.
Clyde KC7BJE
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Re: NanoVNA WINDOWS OR ANDROID SOFTWARE
Hello Piero,
I was using NanoVNA H firmware, 1.0.39.dfu FW and nanovna-saver 0.3.8
This combo did not work. I could not get the Software to recognize the VNA no mater what I tried.
Even though the FW had a setting to select between USB and Bluetooth serial, it would not work.
I switched the Firmware to
NanoVNA-H- UART.dfu.
I am still using nanovna-saver 0.3.8
The saver Software connects to my NanoVNA-H with 2.8 screen and runs OK. I am also running a Windows 10
Laptop.
The one problem I have found with nanovna saver 0.3.8, is it takes about 15 to 30 seconds for it to boot on my PC.
73's
Clyde KC7BJE
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Hello,
Tell me if you have checked the SOL terminations on another VNA? Also, I found that I needed a warm and fuzzy check when using the VNA so built up a couple reactive terminations. That is, a PCB mount male connector with a series chip 50 ohm 1% resistor and a series chip capacitor. The cap value is selected to be -j50 at some frequency of choice. I made two. One with the design frequency of 1 MHz and used a value of C of 3185 pF. and one at 10 MHz with a selected value of 318.5 pF.
Notice the C is proportional to the frequency. After calibration and when I want to use the device I put on the reactive load to confirm it reads the right 50-j50 on the design frequency. I know then that the calibration is linear across the bands of interest, Yes, you can build one for any frequency, you want just use 1% components or select them carefully. Works for me. Warm and fuzzy.
Mel, K6KBE
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Just opened the box and charged the unit now all I get is a white screen!!!!!
Powers up, but nothing but a white backlite screen????
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Re: RF from outside - Did I brick my nanoVNA-H?
On Mon, Nov 2, 2020 at 05:43 AM, BruceN wrote: I suspect that repairing it wouldn't be worth the trouble since a new one is
so inexpensive. If it were mine, I would almost certainly try to repair it. Probably burned up a few cents to maybe a few dollars worth of parts, might take all of an hour to fix it. After fixing it, I would buy an SAA2 and keep the old (repaired) unit for a spare. Or use it for a signal source. Or whatever.
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Re: How to go to the FILE or WIKI page?
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How to go to the FILE or WIKI page?
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Yes, the NANOVNA offerings are nothing short of a game changer and a
wonderful educational tool. Once the (good) universities get word of them,
they should be buying them by the hundreds for their RF and microwave
courses (CU Boulder and School of Mines in Golden in my state, Colorado and
possibly New Mexico State in Las Cruces). I know for a fact, CU in Boulder
offers a very popular hands-on RF design course, including soldering pens,
spectrum analyzers, and VNA's.
Dave - W?LEV
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On Mon, Dec 7, 2020 at 8:41 PM Chris K2STP <ccarrara@...> wrote: Hey guys,
Just to be clear, I wasn¡¯t really ¡°criticizing¡± you guys for making fun of
the young generation... I get it, believe me. Hiring LOTS of IT technical
guys and gals over the years for me was a huge challenge, it was hard to
find folks that understood what was inside a desktop or laptop, they all
could tell me what app worked best, but it was hard to find people who
could troubleshoot and fix things! I¡¯m 100% sure it¡¯s 10 times worse in
the EE world, but I get it.
I was more just making pun of the fact it is being discussed in a forum
that was put up by YOUNG guys, who have designed an amazing new device
(both hardware AND software for it!). So they do understand more than we
give them credit for. While there are a lot of folks that don¡¯t understand
anything inside the black boxes, there are also a bunch more young guys
that have an amazing breath of knowledge that I can¡¯t say I ever had! Just
watch some of the physics and EE type stuff on YouTube put up by 20
somethings.... ;)
Now, off to make a new 6 meter antenna called a ¡°barber pole¡± and test it
with the Nano!
--
Regards,
Chris K2STP
--
*Dave - W?LEV*
*Just Let Darwin Work*
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Hi DiSlord,
That is true, it is a big ask and I did consider that as being an issue.
I have tried a couple of calibrations 50k to 2M and 1M to 900M.
The lower frequency range still seems a little wild. This didn't seem to be the case before.
I have attached an image of the lower frequency range.
Any thoughts?
Thanks,
Leighton
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Hi Larry,
Thanks for the suggestion. I have tried a few things including the screen "RESET" button and also tried the "clearconfig" command also.
I have also tried "blanking" the device with the "memory clear" firmware and then loading the firmware again.
Regards,
Leighton
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I not recommend use as start point 50k and end big frequency like 900M
Better set 1M to 900M
If need measure on < 1M select only this range.
Interpolation for low values < 1M allow measure it on this calibration data.
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Walt WA7SDY
Clyde Lambert
Jim Allyn - N7JA
