| Products > Test Equipment |
| SSA3032X-R AVG100 Scectra of LiteVNA64 |
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| KeBeNe:
--- Quote from: kladit on October 18, 2023, 08:38:36 am ---The noise distribution the analyzer shows is correct and has to do with the Rayleigh function. .... --- End quote --- I don't think the Rayleigh function explains this problem and applies in this case. Please check the behavior of the disabled FFT sweep. |
| markus_jlrb:
@KeBeNe >Please check the behavior of the disabled FFT sweep. ??? Sorry not catch you - could you please provide a more detailed procedure. Thanks in advance. Markus |
| kladit:
@KeBeNe I also wrote: "Your noise was much higher even at the high frequency side, the cause of that has to be investigated first." I still hope one of the owners of a comaprable R&S analyzer can setup the same and show us the results. @Markus please post a screenshot and use markers and noise markers to make the results numerical comparable. |
| Performa01:
I don't have a comparable analyzer, yet it can provide RT-SA at narrow spans like 100 kHz. Attached is the 100 MHz example. At a VBW of just 3 Hz averaging is rather slow, so I made do with 10 averages instead of 100: SH_SA44_PN_100MHz_-18.5dBm_Span100kHz_AVG10 |
| markus_jlrb:
From my point of view not the noise level is to be discussed but the avg function. Noise could be indeed higher at left side of the carrier but nevertheless the left side trace have to be smoother when 100 times the noise was run into the avg function. I will compare next week, if I have time, the same measurement at a SSA3021X (without+) and report the result. Markus |
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