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Re: frequency correction #tinysa
Erik, Is that the only change in FW release v1.0-52? - Herb
By hwalker · #653 ·
Re: frequency correction #tinysa
Great Gary, Erik should be a big help if you have questions about either measurement.? You will want to look over the Wiki to learn how to identify spurious emissions within the tinySA itself and how
By hwalker · #652 ·
Re: frequency correction #tinysa
I intend on using it for general lab work like identifying and quantifying spurious and harmonic emissions. Gary W9TD
By Gary W9TD · #651 ·
Re: Jumping base line
lol, I already started writing PC software for it. Which would also compile for all 3 main OS's - windows, nixies and macs. I've done a lot of SDR 2D/3D real time panadapter/waterfall spectrum graph
By OneOfEleven · #650 ·
Re: Jumping base line
OneOfEleven, You probably noticed the following: 1. The VDD and BOOT pins are available as a last resort for a user that can't access DFU mode in the usual way. 2. No SanDisk pads are available, so
By hwalker · #649 ·
Re: Jumping base line
Thank you Herb. Am trying it with manual ref-level (-10dB) set, all appears OK now. The auto ref-level code might need some tweaking by the looks of it :) My heads full of NanoVNA code at the
By OneOfEleven · #648 ·
Re: Jumping base line
OneOfEleven, Try setting LEVEL->REF LEVEL_>MANUAL.? Your video shows the reference level changing when the level shifting occur.? In rapidly changing signal environment,? manually setting the
By hwalker · #647 ·
Re: Jumping base line
A scan of the PCB with the covers removed.
By OneOfEleven · #646 ·
Re: Jumping base line
The sudden jumps are always 10dB up/down.
By OneOfEleven · #645 ·
Jumping base line
Hi Erik I was wondering what you think might cause the base line to jump up and down like this. I'm using your latest firmware as of today, but it was the same with your previous firmware
By OneOfEleven · #644 ·
Re: frequency correction #tinysa
Gary, What is your current application of the tinySA?? Knowing how the tinySA is being used by its users would probably help Erik to beef-up the Wiki in those relevant areas. - Herb
By hwalker · #643 ·
Re: frequency correction #tinysa
Thanks all for the clarification. Gary W9TD
By Gary W9TD · #642 ·
Re: frequency correction #tinysa
I checked. On purpose I let the resolution filters overlap somewhat? so this helps the interpolation. There is no I/Q signal and FFT but 57 resolution filters ranging 2.4kHz to 600kHz and then a
By Erik Kaashoek · #641 ·
Re: frequency correction #tinysa
That little bit of code I put here only really helps if the carrier of interest is somehow spread across 2 or 3 spot frequencies (bins in the FFT world). Otherwise it has little to no effect at
By OneOfEleven · #640 ·
Re: frequency correction #tinysa
FW released, version v1.0-52
By Erik Kaashoek · #639 ·
Re: frequency correction #tinysa
Integrated including using the calculated frequency i.s.o. the frequency array when printing Will be in next FW release
By Erik Kaashoek · #638 ·
Re: frequency correction #tinysa
Line should be .. if (idx > 0 && idx < (sweep_points - 1))
By OneOfEleven · #637 ·
Re: frequency correction #tinysa
You can get a better frequency estimate for a marker that is set to "Tracking the peak". I modified this bit with some extra code to estimate the actual carrier frequency .. ========= sa_core.c line
By OneOfEleven · #636 ·
Re: frequency correction #tinysa
Herb, Thanks for the good explanation. Gary, Thanks for find the ACTUAL FREQUENCY was missing in the wiki. Its added now: https://tinysa.org/wiki/pmwiki.php?n=Main.SETTINGS2 I added the frequency
By Erik Kaashoek · #635 ·
Re: frequency correction #tinysa
On Fri, Aug 14, 2020 at 01:52 PM, gary wrote: 1. What does the menu item 'correct frequency' under the 'expert config' menu do? [I haven't used that setting yet, so I'll leave it to Erik to
By hwalker · #634 ·