which model of scope ? - Page 1
Forum section: electronics / testgear

author: mohandes
author_rank: Contributor
timestamp: June 16, 2014, 01:45:35 pm
content: hi all guruthis days i need to have scope but i really do not know which model is better.i need 60MHZ to 100MHZ and sampling 1GSa/s or 2GSa/s scope. Manufacturer of scopes are many and have many data but i do not know which is best :i can pay 800$1- GDS-2000A series or GDS-1000A-U Series ( like GDS1072AU _ GDS2072A )2 - DS2000A Series or any model you tell me ( like 2072A)3- SDS Owon7102please guide me , i need best modelExcuse for my bad English

author: tautech
author_rank: Super Contributor
timestamp: June 16, 2014, 08:37:47 pm
content: Siglent SDS2072 will easily out spec any you have listed and is ~US$800

author: echen1024
author_rank: Super Contributor
timestamp: June 16, 2014, 09:31:15 pm
content: Quote from: tautech on June 16, 2014, 08:37:47 pmI second that recommendation.

author: Creep
author_rank: Regular Contributor
timestamp: June 16, 2014, 10:21:56 pm
content: The question here is how much do we have go give up by going with the Siglent scope compared to the Rigol given the fact that (as far as I'm aware of) it isn't hackable.Plus I wonder if someone will get it hacked one day

author: jimjam
author_rank: Regular Contributor
timestamp: June 17, 2014, 08:02:49 am
content: Quote from: echen1024 on June 16, 2014, 09:31:15 pmEchen, I think you've mentioned in several occasions (your youtube review and in a post somewhere) that you think the rigol ds1074z is much better than the "crappy" siglent. Would you care to elaborate please? Thanks!

author: rf-loop
author_rank: Super Contributor
timestamp: June 17, 2014, 11:56:06 am
content: Quote from: jimjam on June 17, 2014, 08:02:49 amPerhaps you did not note that model was Siglent SDS2074 what is totally different as mostly discussed Siglent SDS1000 series. If Compare Siglent SDS1000 series it is clear that Rigol DS1074Z is in most cases more advanced. But still it depends user special needs. If we go to SDS1000 series but take CFL models and if need more samplerates than this Rigol it beats it clearly.It need remember that Rigol DS1000Z have 250MSa/s for 4 channels simultaneously.Siglent SDS2000 series have 1GSa/s for all 4 channels simultaneously and on 4 channel model 2 channel can use with 2GSa/s simultaneously.Also Siglent is much faster, 110000 wfms/s and over 400000 frames/s in seguence capture mode with all frames timestamped..But, Siglent do not use this "hackable" marketing trick. Typically professional users are not intereted about hacking.

author: echen1024
author_rank: Super Contributor
timestamp: June 17, 2014, 12:43:16 pm
content: Quote from: jimjam on June 17, 2014, 08:02:49 amWhen I made several of those videos the Siglent SDS2000 series was barely known in the US, and hadn't even began production. I was comparing it to my old SIglent scope, the SDS1102CNL, which if you look at the specs, is no match for the DS1074Z, eg 30k wfm/s, vs something like 500, 4 channels vs 2, serial decode, 24mpts memory vs 40kpts, etc.

author: mohandes
author_rank: Contributor
timestamp: June 17, 2014, 01:23:59 pm
content: Quote from: mohandes on June 16, 2014, 01:45:35 pmthanks allhttps://www.eevblog.com/forum/testgear/new-instek-scope-gds-1072a-u/in this this topic i see all information but the main problem that , GDS2072A have 2M for one channel. If 2 channels 1M per channel and it is bad .i live in Iran and i just can buy PayPal so SDS7102 better or DS2072 ?for example SDS7102 in this site is good ?http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dindustrial&field-keywords=SDS7102v&rh=n%3A16310091%2Ck%3ASDS7102vsorry me , my English is not complete and need to more help.Conclusions Guru says GDS is not good , and Mr marmad say DS2072 better than SDS7102 and i do not choose yet.thanksEDIT:what is your idea about it :http://www.tester.co.uk/siglent-sds2072-oscilliscope-bandwidth-70-mhz-2-channel

author: echen1024
author_rank: Super Contributor
timestamp: June 17, 2014, 02:14:59 pm
content: The DS2072 is roughly comparable to the SDS2072, and both blow the Owon away. In terms of bang for your buck, the Rigol wins due to the hacks. The DS2072 for example can be hacked up to 300MHz, as well as serial decode and 56mpts memory, and it has that nice waveform record. Where the Siglent wins out is the fact that it has power analysis, and a faster waveform update rate, however, it cannot be hacked and those software options cost a pretty penny.

author: mohandes
author_rank: Contributor
timestamp: June 17, 2014, 02:26:55 pm
content: Quote from: echen1024 on June 17, 2014, 02:14:59 pmhisorry me , if scopes hack better or do not hack ?and you say DS2072 betterExcuse for my English

author: nixfu
author_rank: Unknown
timestamp: June 17, 2014, 03:06:09 pm
content: The Rigol DS-1070z scope looks like a very good deal since it can also be hacked now with upping the frequency and enabling all the software features like serial/i2c/spi bus decoding etc.

author: echen1024
author_rank: Super Contributor
timestamp: June 17, 2014, 03:42:34 pm
content: Quote from: mohandes on June 17, 2014, 02:26:55 pmWell it depends. The base DS2072 is inferior to the SDS2072, however, if hacked, the DS2072 offers many advantages over the SDS2072, since it can go up to 300MHz and has many more features. If you do get the Rigol, then by all means hack it. The siglent has mainly the power analysis and higher waveform update rate for less frequent events as its benefits. It is up to you. If I were to choose, I would choose the Rigol due to the more features, however, some users may find higher waveform update and power analysis useful. Note PA is also an option.

author: rf-loop
author_rank: Super Contributor
timestamp: June 17, 2014, 04:05:15 pm
content: @mohandesI give one simple opinion for you. This opinion is based for my over 50 year experience with electronics hobby and also portion of this time quite lot of experience with lab equipments in real work (not sales work) for money and note, this opinion is NOT related any amount of this truth that in these "retired" years due to tight and deep connection to China I also sell some equipments. This opinion is totally without any connection to sales.Related to models what you have listed...If you can get Rigol DS2072 (DS2072A) with your budget, selection is simple. You have three choices. Rigol DS2072, Rigol DS2072 and Rigol DS2072.With it you can not go wrong related to price and features (and building quality). These are ok in its price. (also this opinion include some perhaps possible tricks to get more...)This isif you have not any known defined needs what shoot down this selection. And, there is very small amount these possible special things.If you want/need reduce your budget or have special needs then selection is perhaps more complex. Siglent SDS2072 is perhaps some small amount more expensive and your one eaxample, Owon SDS7102, is much cheaper.

author: mohandes
author_rank: Contributor
timestamp: June 17, 2014, 05:33:03 pm
content: Quote from: rf-loop on June 17, 2014, 04:05:15 pmthanksyou say me DS2000 better. ok if i buy it i can hack it , it is simplewhat is your idea about SDS7102 ?regards

author: mohandes
author_rank: Contributor
timestamp: June 17, 2014, 05:49:36 pm
content: Quote from: echen1024 on June 17, 2014, 03:42:34 pmthanksNote PA is also an option. , I DONT know PA . sorry me.man if scope hack get better , so maybe SDS hack too !!!in sampling what the meaning of Averages ??for DS max input voltage is 300rms , if i set probe on *10 can measure for example 3000voltwhat is your idea about SDS7102 ?this site is good and valid to buy form that ? and can send to IRAN ?http://www.saelig.comregards

author: echen1024
author_rank: Super Contributor
timestamp: June 17, 2014, 06:18:20 pm
content: Quote from: swarner11 on June 17, 2014, 06:11:15 pmFor his budget, def not. The Rigol DS2072 Kills it.

author: FrankenPC
author_rank: Unknown
timestamp: June 17, 2014, 06:20:12 pm
content: I'm going to throw in my 1c opinion.Disclaimer: I have amateur needs when it comes to equipment. So, this opinion of the Rigol DS2000A vs Siglent SDS2000 needs to be placed in that context. For example: super high waveform capture rates are not a requirement.I had three basic requirements when I decided to purchase a digital scope: Expandability so as I grow so does the scope, the ability to assist me in the learning process by giving me as many visualization aids as possible, and finally a good bandwidth upper limit so I can play with the higher frequencies if I choose (file this under expandability actually).That being said...ON PAPER the Siglent SDS2074 looked ideal. So I purchased one contingent on a return policy if it didn't work out. I evaluated the SDS2074 for about two weeks. Long story short: I returned the scope and settled on the Rigol DS2072. I would have been VERY happy with a Rigol DS2074, but that does not yet exist.Siglent pros and cons. Again: perspective of an amateur AND the current state of the firmware. Also, there are many details that I'm leaving out because they were irrelevant to me even though they were annoying. Example: poor center of gravity: press the top push-to-click buttons and the entire scope tips backwards. Knobs were "wiggly" or flexible on the shafts.Pros: Color temperature rendering is fluid and beautiful. Very easy on the eyes. Waveforms update very rapidly (low LCD render lag). Four channels with fast acquisition and probe detection. Knobs and general UI were easy to learn and seemed instinctive for general use. Overall, nice visualization engine. I really liked it.Cons: No simplified waveform capture/playback system. Cursors are extremely limited and visual auto-tracking (smart cursors) are non-existent. LCD real estate is poorly leveraged. Smooth rotation selection knobs have poor/non-existent speed scaling (poor motion profiling). No bandwidth upgrade path at all. Protocol analysis buggy to the point of being useless. Advanced triggers behave in non-intuitive ways: runt trigger couldn't lock on my Lecroy signal test board. Color temperature rendering goes wonky when using more than one channel.This one was REALLY annoying: The UI insists on dynamically changing the scope behavior as you cycle through options. In other words, if you have to switch between 5 different triggering options to get to what you want, the scope will shift through the different modes AS you pass over the option. This leads to very slow UI response. Rigol's select-click before changing mode is superior.Really, once you've used Rigol's superior firmware and UI toys like variable speed shuttle knob and smooth real-time waveform capture, it's hard to use the Siglent. I DO miss the waveform visualization though. That is a nice Cadillac feature. Also, I did not have a genuine desire for 4 channels. If I REALLY need 4 channels in the future, I may re-evaluate the current state of the Siglent. When the firmware issues are worked out, it's going to be a very nice scope.

author: rf-loop
author_rank: Super Contributor
timestamp: June 17, 2014, 06:22:53 pm
content: Quote from: mohandes on June 17, 2014, 05:49:36 pmThere is not any known hack for Siglent or Owon.3000Vrms. NO (but also yes with special probes). Normal probe what come with scopes are not at all for this voltage. 1:10 and scope input get 300Vrms from 3000Vrms but you need look then probe itself limits also!!!For 3000Vrms it is best to buy 1:100 probe what is specified to 5kV or more.And, it looks like it is best you stay tightly under 48V signals until you have enough knowledge and experience with safe work with high voltages. Scope damage is minor problem in this game. Human death is some amount more serious.There are many companies who can ship to Iran.Also you can ask offer from company name Wellzion in China. (they have good and trusted shipping and handling service and there is working one people who I trust as rock. You can find it example in Alibaba. Just ask / chat tomorrow with this sales person (using China working hours) (this company Wellzion itself I have not experience but people who I know, (name is there in Alibaba) have done very perfect job earlier in some other company.).

author: mohandes
author_rank: Contributor
timestamp: June 17, 2014, 09:26:24 pm
content: Thanks all Gurui will buy Ds2072 for mine .thanks for guide and help me .today my friend say need to scope ( i call him ) and say me have 500$ to pay.so which model betterhttp://www.saelig.com/PSBEB100/PSBEB100019.htmorhttp://www.saelig.com/PSBEB100/M00062004.htmor any scope you introduce.regards

author: nctnico
author_rank: Super Contributor
timestamp: June 18, 2014, 12:59:21 am
content: Quote from: FrankenPC on June 17, 2014, 06:20:12 pmI'm strongly leaning towards buying a 4 channel SDS2000 series (I also want the MSO option) but this doesn't sound very promising. Maybe rfloop or tautech can shine a light on whether the decoding and color grading issues have been solved.

author: tautech
author_rank: Super Contributor
timestamp: June 18, 2014, 02:14:49 am
content: Quote from: nctnico on June 18, 2014, 12:59:21 amThe color and intensity grading are much better after the last firmware which also improved the decoding.An EE customer had a live GPS feed into his work place and decoding worked great with that. Why I didn't get some screen shots at the time I don't know.As time allows I am trying to put a post together on SDS2000 decoding. Might be a few days.Watch that thread:https://www.eevblog.com/forum/testgear/siglent's-new-product-msosds2000-series/

author: mohandes
author_rank: Contributor
timestamp: June 18, 2014, 01:49:15 pm
content: Quote from: nctnico on June 18, 2014, 12:59:21 amhiare you work to DS2072A too ?

author: mohandes
author_rank: Contributor
timestamp: December 01, 2014, 06:55:29 pm
content: DS1074Z or sds7102v?help

author: mohandes
author_rank: Contributor
timestamp: December 01, 2014, 11:16:01 pm
content: ok1 point for ds1074z.any idea?