Re: Measure bandpass filter
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On 24 Dec 2022, at 09:00, Erik Kaashoek < erik@...> wrote:
Although the tinySA is not designed for filter measurements you can watch this video for some inspiration. --
For more info on the tinySA go to https://tinysa.org/wiki/
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Re: Measure bandpass filter
Although the tinySA is not designed for filter measurements you can watch this video for some inspiration. https://www.youtube.com/watch?v=l0xPmkf_EkI --
For more info on the tinySA go to https://tinysa.org/wiki/
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Hello guys,?
I am waiting for mt TinySA ultra. Can somebody direct me to how to use the Tiny sa Ultra to measure the 3db skirts of a band pass filter.
Thanks in adv and Happy holidays
Andrea
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Re: Test 11: Display Fail
Geoff, Can you post a picture of the screen showing the fail message? This may be a single pixel error in the display that may impact waterfall display Can you test the waterfall display? --
For more info on the tinySA go to https://tinysa.org/wiki/
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Also fix bugs and add features that
can then be added to the main development path.
Bob S
On 12/23/22 18:52, Bob Snyder wrote:
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If folks can build the code without
errors or other problems, it means they can make custom changes
to the code for their own purposes.
Bob S
On 12/23/22 18:50, Terry Perdue
wrote:
Dumb
question: A lot of posts appear to be about compiling source
code files - presumably to create .bin or .dfu files for the
latest versions. I'm curious as to why there's so much interest
in doing so when Erik provides those files for us. It seems like
a lot of unnecessary work. What am I missing?
Terry
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If folks can build the code without
errors or other problems, it means they can make custom changes to
the code for their own purposes.
Bob S
On 12/23/22 18:50, Terry Perdue wrote:
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Show quoted text
Dumb
question: A lot of posts appear to be about compiling source code
files - presumably to create .bin or .dfu files for the latest
versions. I'm curious as to why there's so much interest in doing
so when Erik provides those files for us. It seems like a lot of
unnecessary work. What am I missing?
Terry
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Dumb question: A lot of posts appear to be about compiling source code files - presumably to create .bin or .dfu files for the latest versions. I'm curious as to why there's so much interest in doing so when Erik provides those files for us. It seems like a lot of unnecessary work. What am I missing?
Terry
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tinySA V1.4 Menu not working correctly
Hi
Using Ubuntu 22.04, I followed the instructions on Erik's Github to compile the code.
All worked after a bit of a learning curve, but on both my tinySA's the only menu showing after resetting is 3 lines:
Auto (selected), Manual(0), Back. None work, although, on 1st one, the push-down, side-to-side managed to
select enough to go to config and set touch, then all came ok - but second one cannot get the switch to respond, without the 'menu' disappearing.
Cheers
Colin
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Re: Test 11: Display Fail
Geoff, Check the cable between Cal Out and RF In connectors. Make sure it is secure. Test continuity. Try a different cable. Other than that, maybe someone else has a suggestion. *** Walt *** WA7SDY ***
On Friday, December 23, 2022 at 02:44:27 PM PST, Geoff Peters - AB6BT <ab6bt@...> wrote:
Just received new Ultra. Test 11: Display Fails.
All other tests pass.
It all look OK.
Any clues
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Just received new Ultra. Test 11: Display Fails.
All other tests pass.
It all look OK.
Any clues
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Re: Apply Custom Calibration Curve to Ultra
Thanks Erik, I will check that out.
Great job on the Ultra!
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Re: Apply Custom Calibration Curve to Ultra
This video? demonstrates how to use the TRACE TABLE to create a maximum 8 (for the ultra)? point linear interpolated gain correction curve --
For more info on the tinySA go to https://tinysa.org/wiki/
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Apply Custom Calibration Curve to Ultra
I own an ISO-TEE for tapping high-power signals for measurement at reduced levels on TInySA-Ultra. ? ?The tap on it is non linear so it varies with frequency. ? I am looking for a way to apply a custom curve to the Ultra to account for its tap’s frequency response. ?
Using the TinySA alone, Is there a way to measure, store, recall and apply the ISO-TEE response characteristics to the TinySA measurements??
Is there a way to import an externally created response curve??
If an externally created curve is supported, if adequate points are included, can a wide-band curve be applied to both narrow and wide-band measurement ranges?
Thanks in advance for your insight.
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Re: Ultra Version Jog Wheel
Yes, it does.
Thank you,
Dick, W1KSZ
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Jog wheel operation is a secondary means of user input. ?It is fairly straight forward, but is not as user friendly as touch screen operation.
Pressing the jog wheel in (no left or right movement) activates and deactivates menus. ? ?Pressing it while a menu item is selected activates that menu.
Pushing the jog wheel left or right moves the onscreen cursor left or right when no menu is displayed.?
Pushing the jog wheel left or right while a menu is displayed highlights and steps the user through the displayed menu options.
The jog wheel becomes the only source for user input when certain menus are activated, such as Brightness.
Hope this helps.
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Re: Ultra Version Jog Wheel
Jog wheel operation is a secondary means of user input. ?It is fairly straight forward, but is not as user friendly as touch screen operation.
Pressing the jog wheel in (no left or right movement) activates and deactivates menus. ? ?Pressing it while a menu item is selected activates that menu.
Pushing the jog wheel left or right moves the onscreen cursor left or right when no menu is displayed.?
Pushing the jog wheel left or right while a menu is displayed highlights and steps the user through the displayed menu options.
The jog wheel becomes the only source for user input when certain menus are activated, such as Brightness.
Hope this helps.
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Re: Observing a low frequency signal using an up converter
Remember to get a ~30db amplifier to install between the cal output and the converter. You could use an external source like a GPS controlled 10Mhz oscillator but remember that the frequency will be off exactly the amount the Tiny is off from the GPS / external oscillator.
John
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Re: Observing a low frequency signal using an up converter
Hey Bob,
I ordered mine from ebayism # 123657087461, will
let you know how it goes after I receive and test it.
Mike C. Sand Mtn GA
On 12/22/2022 9:11 AM, Bob Ecclestone
wrote:
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Thanks John.
Appreciate the reply.
A search for "BG7TBL" returned a lot of stuff on 10MHz sources.
I will have another look around using the "SA LF Converter" search
terms.
Cheers...Bob VK2ZRE
On 23/12/2022 12:58 am, John Cunliffe
W7ZQ wrote:
Hi Bob,
I bought it in 2018 or 19 from a vendor on Ali Express and the
vendor was according to my notes Ham Radio Shop. Great to deal
with, but of course that was nearly 4 years ago and thus who
knows if they still exist or are still of the same quality. It
goes by the brand BG7TBL and is called SA Low Frequency
Converter. If you deal with any of the vendor like this, Don't
get discouraged if the item isn't on the page,always send them a
message through the Ali Express messaging system asking for what
you need. Chances are, they have it but not listed or know where
to get it.
John
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Here's an example.? This screen shot shows the tinySA-App trace of a single scan (Moving Average Filter: off, Calc: off) with markers.? The corresponding lines of the saved CSV do not show the same amplitude values as the app markers.? To me, this looks like a scaling error in the CSV export? 545762525.000;?????????? -134.809?????????? (marker shows -117.1) 548322611.000;??????????? -69.185??????????? (marker shows -60.094) 655479516.000;?????????? -135.025?????????? (marker shows -117.28) 
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Re: Ultra Version Jog Wheel
I cannot seem to find it either, however last night some how I
did it accidentally
Rich
On 12/22/2022 12:56 PM, Dick wrote:
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Is there some
place I can find instructions on use of the
"Jog Wheel" ?
I looked in the
Wiki, but nothing jumped out at me.
Tnx es HH, Dick,
W1KSZ
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When exporting CSV trace files from TinySA-App connected to my Ultra, the amplitude values in the file are around 10 dBm lower than traces shown in the app.? I tried many different RBW and points per scan and get similar results.? Can anyone try this and let me know if yours are also doing this?? Thanks!
With further study, it seems that the CSV amplitude values range from 10 dBm to 20 dBm lower than the display trace.? Hmm...
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Walt WA7SDY
Dick
John Cunliffe W7ZQ
Mike C.