I mean, the R&S is in noise figures any better than the used SSA2K plus, also the close in noise figures any different.
I mean, the R&S is in noise figures any better than the used SSA2K plus, also the close in noise figures any different.
can you say 100% that it is the spectrum analyzer or could it also be the SDG?
I mean, the R&S is in noise figures any better than the used SSA2K plus, also the close in noise figures any different.
You can also do this with the SSA2K plus, then we would have a comparison between the SDG6022X with the R&S FPL and the SDG2000X and the SSA2K plus.
What is wrong with the modulation for you, do you have concrete examples of what you would expect? Maybe it's me that I just don't understand you
Greetings and Happy Easter
Detlev
If they differ from your KS measurements, how would you rate that? Good, bad, or just different? I find such discussions very interesting.
A comparison with KS using specific examples would be nice.
You can also do this with the SSA2K plus, then we would have a comparison between the SDG6022X with the R&S FPL and the SDG2000X and the SSA2K plus.
What is wrong with the modulation for you, do you have concrete examples of what you would expect? Maybe it's me that I just don't understand you
Greetings and Happy Easter
Detlev
Look, I did many measurements using SSA2K Plus and SDG2K and a KS AWG. Also source from 10MHz Sine OXCO as -120dbc@1Hz. Complained Siglent about false Square wave FM & PM. At the end even the new FM & PM is in questions. So I asked for your SDG6K figures and they differ from my KS measurements.
The basic question is how the made the Square wave ... by math or using a sine to square wave circuit.
In addition the performance of the SSA is important, as low PN & Jitter & close-in noise & other spurs & low over all noise contributions.
I come now to the conclusions about the FM / PM as sine & square waves, just at first, to simulate various with high floating point precision as may the precision on the HW gear is may the limited factor.
My 2 cents
Hp
If they differ from your KS measurements, how would you rate that? Good, bad, or just different? I find such discussions very interesting.
A comparison with KS using specific examples would be nice.
As it gets now, any different
So first to do the homework with math and see about the beef... as looking about a dog
As with egg and hen questions, as some did forget the rooster as only with them gets any valued eggs.
Hp
Again you are on your crusade to prove something (which is ok as a principle) but nobody understands what exactly you are trying to say.
Sorry, I'm just being honest and a bit direct.
As to answer to one of your questions I understand, both Keysight you are mentioning and Siglent AWG in question are AWG: Arbitrary waveform generators, that numerically construct signals from clocked digital values through ADC to output amplifier. They are not modulated physical sources (like VCOs, disciplined or not) or pulse forming sources that form output signals through physical pulse forming networks...
fc = 10000 % carrier freq Hz (sine wave)
df = 1 % deviation Hz
fs = 100000 % sample rate Sa/s
fmod = 100
dp1 = 2*pi*(fc+df)/fs % phase increment per sample for fc+df
dp2 = 2*pi*(fc-df)/fs % phase increment per sample for fc-df
dp = [ones(1,fs/2/fmod)*dp1 ones(1,fs/2/fmod)*dp2];
dp = repmat(dp, 1, 10);
signal = sin(cumsum(dp));
% place frequency scale origin at fc
plot((0:length(signal)-1)*fs/length(signal)-fc,20*log10(abs(fft(signal)/length(signal)*2)))
grid on
ylim([-100 0])
xlim([-2000 2000])
Then I'm probably not quite right with my approach of looking at the fundamental wave of the square-wave signal and its 3rd harmonic separately.
Do you also have decimal values of the simulation?
Unfortunately I don't have a way to simulate this
Peaks:
0: -3.5717e-04
100: -43.922
200: -92.042
300: -63.006
400: -104.09
500: -71.875
600: -111.13
700: -77.713
800: -116.14
900: -82.069
1000: -120.02
It's great to see that the simulation goes so well with the measurement
Almost too good to be true!
It seems these SDG6000X AWGs are pretty good as shown in images #29 and #30.
Same goes for the little brother SDG2000X AWG as shown in #31 screen image.
Results are from a SSA3021X Plus, certainly not in the same class as the R&S FLP1000, but still respectable.
Edit: Added Image #32 which is for the SDG2000X AWG at 10MHz.
Best,
It seems these SDG6000X AWGs are pretty good as shown in images #29 and #30.
Same goes for the little brother SDG2000X AWG as shown in #31 screen image.
Results are from a SSA3021X Plus, certainly not in the same class as the R&S FLP1000, but still respectable.
Edit: Added Image #32 which is for the SDG2000X AWG at 10MHz.
Best,
Thanks for your measurements. You confirm the simulation and also my measurements.
Siglent did a good job there.
Your measurements are also interesting for me because they give me a comparison between the FPL1000 and the SSA3021X. I also shortlisted the SSA3021X. In the end, it ended up being the FPL1000, which gave me many sleepless nights I don't always spend so much money on a measuring device