Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
Hi all - many inputs and much to consider - but thanks! I'll address your feedbacks in sequence below: @Jim : Thanks for commenting above and also your setting up/linking to your ADC interference
By
JM
·
#27020
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
No. JoeSmit software works with the original (H), V2 and the latest with LiteVNA.
By
Dragan Milivojevic
·
#27019
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
If you check the video it has a link to his software. However, it is not for the "original" NanoVNA H. It is for the NanoVNA version 2. The V2, is a redesigned version of the Original NanoVNA H. So if
By
Clyde Lambert
·
#27018
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
Hi, Jesper, Before You start working with NanoVNA and Joe's SW, take a look at this thread and the following discussion
By
AlexSpb
·
#27017
·
|
Re: Examples of anomalous ADC system that a NanoVNA is NOT good for
Jim, I was working for HP when Tektronix loaned us one of their early engineering models of their FFT'ed spectrum analyzer. They just requested we document what we found. Well,..... it was OK on
By
W0LEV
·
#27016
·
|
Re: Examples of anomalous ADC system that a NanoVNA is NOT good for
Excuse me - 66 MHz aliases to 16.8 MHz ( 66/49.2 = 1.34 - 1 = 0.34 * 49.2 = 16.8)? - Too early in the morning. > > >
By
Jim Lux
·
#27015
·
|
Examples of anomalous ADC system that a NanoVNA is NOT good for
Attached are a couple plots of the processed digital output of an ADC, where there was leakage of an external clock signal into the system.? Sample rate is about 49.2 MHz, interference signal is 66
By
Jim Lux
·
#27014
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
On 2/25/22 8:39 AM, moensted1@... wrote: > @ Jim Lux: > >>> So the idea is to feed a test signal (not from the VNA) into the ADC, and use the VNA to inject power supply noise into the system,
By
Jim Lux
·
#27013
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
@ Jim Lux: To be honest, the way I've done this is by processing the digitized samples offline, and using a nice pure sinewave as the test signal into the ADC. If you want to do it in the analog
By
JM
·
#27012
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
On 2/25/22 7:48 AM, moensted1@... wrote: > Hi all - & thanks very much for your prompt replies! > > @Jim Lux: > >>> Also, bear in mind that the stimulus on the NanoVNAs is a square-ish wave,
By
Jim Lux
·
#27011
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
Hi all - & thanks very much for your prompt replies! @Jim Lux: .. Hmmm, yes, I am aware of this, however, I just do not know how it will affect the circuitry in question, so I thought I'd give it a
By
JM
·
#27010
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
Gotcha - that's kind of what I thought, but the OP mentioned ADCs and DACs.? And that is a different kettle of fish, measurement wise.
By
Jim Lux
·
#27009
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
PDN means "power distribution networks", an odd term that had appeared for those low-Z nets of filtering MLCC caps in power rails, etc. )) All this nets are characterized by very low Z at low
By
AlexSpb
·
#27008
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
You may try Walmart online, they have one that is close to the original for $20+ bucks.
By
David Stansberry
·
#27007
·
|
Re: Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
PDN measurements? What does PDN stand for? I'd be careful about performance down lo
By
Jim Lux
·
#27006
·
|
Trying to find an "original" nanoVNA that will work with Joe Smith's software ...
Hi nanoVNA users, This is my first post here so I hope I am posting in the right topic subgroup .. ? My reason for posting is that I am interested in buying and getting to know how to use a nanoVNA
By
JM
·
#27005
·
|
Re: Unknown Thru Calibration Algorithm
#calibration
discussion about VNA calibration error models: /g/nanovna-users/topic/34237712 This paper seems directly related to the Unknown Through Calibration error model, as I understand:
By
AlexSpb
·
#27004
·
|
Re: Unknown Thru Calibration Algorithm
#calibration
Hi, some related papers from net search, http://www.microwave.fr/publications/149.pdf There had been a discussion thread in this group with recent ly added related paper, too -- Alex
By
AlexSpb
·
#27003
·
|
Re: Unknown Thru Calibration Algorithm
#calibration
It's not mine but I do share the sentiment ;)
By
Dragan Milivojevic
·
#27002
·
|
Re: Unknown Thru Calibration Algorithm
#calibration
I've been retired for 18 years and even I DON'T have that much time, wow, I hope you have a day job. Very nice work though. Mike C.
By
Mike C.
·
#27001
·
|