Rohde & Schwarz FS300 vs Rigol/Siglent - Page 1
Forum section: electronics / testgear

author: Jester
author_rank: Frequent Contributor
timestamp: August 18, 2016, 01:26:18 am
content: Does anyone have any experience with the Rohde & Schwarz FS300?http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2315708.m570.l1313.TR0.TRC0.H0.XRohde+%26+Schwarz+FS300.TRS0&_nkw=Rohde+%26+Schwarz+FS300&_sacat=0These appear to be about 10-15 years old and sell for about US$2000 and up in working condition, I'm wondering how they compare to the entry level Rigol and Siglent spectrum analyzers?The condensed data sheet is attached below

author: Muxr
author_rank: Super Contributor
timestamp: August 18, 2016, 02:12:52 am
content: I don't have experience with either of these, however judging by the datasheets purely. FS300 has the best frequency range 9KHz to 3Ghz.. Rigol (DSA815) is 1.5Ghz and Siglent (SSA3021X) is 2.1Ghz.FS300 has the worst minimum RBW: 200Hz vs Rigol's 100Hz although the latest firmware seem to have made it 10hz to compete with the new Siglent, which is 10Hz.As far as other specs are concerned the new SSA3021X seems better than the Rigol's DSA815. FS300 is tougher to compare since the measurements are done at different settings

author: rf-loop
author_rank: Super Contributor
timestamp: August 18, 2016, 05:10:31 am
content: Quote from: Jester on August 18, 2016, 01:26:18 amIt loose with SSA3032X in nearly every thing clearly - exept weight.Same with SSA3021X but R&S have 3GHz.Also in R&S there is no TGOnly one active trace. Siglent 4.One marker and one delta marker. Siglent 4.Oh and R&S have tiny 5.7" display 320x240 (looks like CFL back light??), Siglent 10.1" 1024 x 600 LED backlight.R&S display max range 80dB. SSA 100dBand so on...I like to see Rigol with 10MHz 0dBm low phase noise signal and how it looks example 100Hz from carrier and 1kHz from carrier using this new 10Hz RBW, how useable it is in near carrier.Siglent (internal reference in use. Signal 0dBm in SSA input from 8644B -004)@100Hz -90dBc/Hz@1kHz -100dBc/Hz

author: Wuerstchenhund
author_rank: Super Contributor
timestamp: August 18, 2016, 05:20:18 am
content: Quote from: Jester on August 18, 2016, 01:26:18 amYes. These were R&S' attempt at a low cost SA almost 15 years ago. They are slow, the RF performance is mediocre, and the hardware isn't the most reliable (I think they were designed by someone else for R&S).QuoteNo, they don't. That is just what some of the sellers are asking, it's not what they normally sell for, aside from the one "brand new" unit (must be very old stock) that went for an excessive price recently.In general the FS300 isn't exactly the most sought-after SA from R&S.QuoteWell, both are brand new entry-level SAs and will probably perform a bit better than a 10-15 yr old entry level SA from R&S. If you really have to choose only between the Siglent, the Rigol and the FS300 then I'd probably risk it and go for the Siglent (just make sure to buy from someone I can return the unit to if it turns out to be another device full of nasty firmware issues).Does it really have to be any of those? R&S also had the FSP which often sells for very reasonable amounts of money, it's fast, and offers a lot better RF performance than any of the Siglents, Rigols or the FSP300 (more similar to some of the old HP SAs that are often favored here).