Author Topic: Rigol DSA875-TG Spectrum Analyzer  (Read 336 times)

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Offline Technix sys

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Rigol DSA875-TG Spectrum Analyzer
« on: April 03, 2019, 08:36:05 am »
I'm new to the EEVblog, although I have been involved in electronics for decades as an electronics engineer for military radio communications equipment/system design. I purchased a Rigol DSA815-TG (1.5GHz) several years ago for my private business use and have been very satisfied with it.  Then I purchased a DSA875-TG prior to the release of the RSA5000 Series, and have been equally satisfied with it.

The fasted sweep time on the DSA815 is 10 Ms, whereas the DSA875 is 1 Ms, and additionally goes up to 7.5 GHz.  The Rigol RSA3000/5000 Series with Real Time display is available.  Although I'm very satisfied with the DSA875 that has a higher frequency coverage than the RSA Series, at significantly lower cost.  While they both (RSA and DSA875) have the same 1 Ms maximum Sweep Time in the conventional sweep spectrum mode.  The DSA875 continues to meet my requirements and interest without the Real Time Sweep capability of the RSA Series.

I believe that the DSA875 will continue to be supported, and in the near future I will report on firmware that I have been reviewing.
« Last Edit: April 03, 2019, 08:51:39 am by Technix sys »
 

Offline Technix sys

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Re: Rigol DSA875-TG Spectrum Analyzer
« Reply #1 on: April 04, 2019, 10:28:51 pm »
For 'Rigol DSA875-TG 9kHz - 7.5GHz Spectrum Analyzer Review, Teardown & Experiments' by Shahriar of The Signal Path:
 

Offline Wall-E

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Re: Rigol DSA875-TG Spectrum Analyzer
« Reply #2 on: April 08, 2019, 10:03:24 am »
FYI:  EEVbloger 'Mad ID' reported that the RSA5000 Real Time SA Internal Spurious Responses are Worst than the DSA875. Ref. http://www.eevblog.com/forum/testgear/new-rigol-real-time-spectrum-analyser/msg1784825/#msg1784825

Hi, we had a demo unit for test.
I was surprised to find that internal spurious emission is much worse than on DSA875-TG. e.q. peaks every 10MHz from 0-100MHz, every 100MHz above 1GHz etc.

Don't know if this is normal for all spectrum analyzers but we'll stick with the old model as real time is not crucial for us. It's not about the peaks, but there are too much of them. Don't wont to ask myself where is this coming from for every EMC measurement.
« Last Edit: April 08, 2019, 10:04:57 am by Wall-E »
 


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