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No this is not a problem.? The tinySA noise floor gets worse below 1 MHz.? due to circuit limitations.? Mine is the same as yours as shown below. If you turn on the LNA it goes about 20 dB

I'm having a hard time squaring all the different calculations proposed in this thread. Let's say that for starters, I want to view/compare the harmonics from several HTs. The 40db attenuator has

I concur with Lutz’s findings in Problems 1&2 and the noise floor profile. (I think Erik may have described the reason for that.) Following…

Not using a probe going in directly with a BNC T and a 50ohm terminator when open ended. Scope input is 1M|15pF. Again, initially I did not expect that after the requisite calibration this TinySA

Remember to set your scope probe to 1 not 10. vy73 OZ4HZ

Hi to all. Right now I'm using TinySA Ultra for conducting some test in order to reduce some harmonics around 700Mhz on my product. The issue is that the TBTC2 tem cell is able to catch a lot of

Another good method to ease measurement of harmonics is to build a simple diplexer (a highpass filter behind a 10dB or greater attenuator will also work) and separate out the fundamental from the

On open ended generator to output to scope -> yes, otherwise no because the TinySA input provides 50 ohm impedance, right? BTW, I just found out that the level difference can be accounted for in the

It uses FET switches and measuring the tiny amounts of distortion produced by them is a very difficult undertaking involving carrier phase and amplitude cancellation techniques.? It will not be an

Have you set your o'scope for 50-ohms or using a 50-ohm feedthrough adaptor? Dave - W?LEV [email protected]> wrote:

Erik, et al: I share in Joe’s confusion / need for good, practical, well-described information. I’ve yet to read clear “connections” between theory / concepts and the equipment / devices

I just got a new TinySA Ultra (SeeSii store, Aliexpress) and get doubtful measurement results. - I selected the cal output of 30MHz. - connected the cal output with the SA input with an oscilloscope

My 407 Arrived, Purchased from Zeenko Aliexpress, self test passed, feels heavier but might just be me, this thing is soooo much more sensitive in the Higher Freqs, I can observe 5g wifi at very

That may be true in your experience, but for both military and commercial compliance testing, dBuV/m for radiated measurements and dBuV for conducted measurements are the standard units. Herb

There are no official service centers in the USA.? Replacement part numbers are discussed in this group message: /g/tinysa/message/18827 If you can do SMD repairs or know someone

Got to agree on no solution ? dBuV has long been the most inconsistent, confused, annoying and useless metric in RF Tech

There is currently no solution to this problem. Will need to find so time for this.... -- Designer of the tinySA For more info go to https://tinysa.org/wiki

10 MHz carrier with 100 % AM modulation at 500 Hz -- Designer of the tinySA For more info go to https://tinysa.org/wiki

No, to measure harmonics of a transmitter you need the highest possible dynamic range of the tinySA and that is without LNA You only use the LNA when signals are barely/not visible -- Designer of the

How? close to carrier I can? get. Can I see 1kHz AM sidebands? at HF?