Beginner Oscilloscope Choice Advice? (+ Testing tips?) - Page 1
Forum section: electronics / beginners

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 13, 2015, 06:17:39 am
content: Hi, I am in the market for an oscilloscope (my first). Looking through, the DS1052E/1054Z seems to be a no-brainer, but...It will set me back S$500-600++!Rummaging through the alternatives,The siglent has a sore lack of reviews/info on EEVBlog, and a Google search led to nothing credible as well.As for the used market, (local sellers) the scopes seem much much cheaper and it tempts me (all from evilBay storefronts for local companies):The Fluke-Philips' similar models seem quite popular, and the Tek TAS seemed really really popular. The Tek TDS, however, didn't appear so.The 2 analog ones seem to be similar in spec.I am hoping my budget to be within S$250-S$300. Which one do you think is the best fit for a beginner?Additionally, other than bringing my own probes to look at the scope's test point & self-test, what else should I look out for before committing to buy a used scope?

author: Electro Fan
author_rank: Super Contributor
timestamp: August 13, 2015, 06:54:56 am
content: Get ready for about 3-4 out of 5 people (if not 5 out of 5) to tell you to spend the extra $ and go with the Rigol DS1054Z if your budget will allow it.

author: kripton2035
author_rank: Super Contributor
timestamp: August 13, 2015, 06:57:11 am
content: Quote from: Electro Fan on August 13, 2015, 06:54:56 amfirst...

author: Lightages
author_rank: Unknown
timestamp: August 13, 2015, 06:58:53 am
content: Yup, as predicted, spend the extra money and get the DS1054Z and hack it. It really is the best nag for the buck and much better than the old scopes listed.

author: pickle9000
author_rank: Super Contributor
timestamp: August 13, 2015, 07:09:28 am
content: I guess I'm 3rd Rigol DS1054Z. The waveform update rate makes it a daily driver

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 13, 2015, 07:50:44 am
content: Quote from: pickle9000 on August 13, 2015, 07:09:28 amQuote from: Lightages on August 13, 2015, 06:58:53 amQuote from: kripton2035 on August 13, 2015, 06:57:11 amWow... Didn't realise the 1054z isthatpopular...But pricing aside, throwing in $600+ on an unknown chinese/overseas seller is a tad worrying. I could buy it from Dave's store/Amazon, but freight forwarding has its problems. And a local distributor is selling the 1054 'new' at S$1200.Unless I really really have the money and can find a universally trusted seller like 99centHobbies, I can only KIV it very seriously.In the meantime, for argument's sake, is the Fluke/Philips or the Tek TAS better?

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 13, 2015, 07:56:49 am
content: Quote from: datumplane on August 13, 2015, 07:42:51 amGetting anything *close* to free is practically impossible in Singapore, more so for analog scopes. Rag-and-bone men sell the good ones to recycling companies, and peddle the rest in the flea market for >$100.Are there any good & trusted sellers that ship/sell the 1054 affordably to Singapore?

author: Mephitus
author_rank: Regular Contributor
timestamp: August 13, 2015, 03:27:46 pm
content: I believe thathttp://www.tequipment.net/can ship to Singapore (someone please correct me if wrong). I think they also have a special discount for EEVBlog forum members if you message tyguy2https://www.eevblog.com/forum/profile/?u=109014

author: michaeliv
author_rank: Frequent Contributor
timestamp: August 13, 2015, 05:19:17 pm
content: What do people think about the Instek GDS-1054B or around $385 ?http://www.tequipment.net/Instek/GDS-1054B/Digital-Oscilloscopes/?OrderItemId=2906799Seems to have better specs than the Rigol (on-paper at least) with 50k update rate & 10M / ch memory depth.What's the catch ?

author: Lightages
author_rank: Unknown
timestamp: August 13, 2015, 05:40:12 pm
content: I find it hard to believe that buying in the US for someone living in Singapore would be cheaper than buying from China or Hong Kong.

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 13, 2015, 09:56:37 pm
content: Quote from: Mephitus on August 13, 2015, 03:27:46 pmQuote from: Lightages on August 13, 2015, 05:40:12 pmUnfortunately for me, you are completely right on this.For the cost of shipping alone, I could probably use it for something much better like a nice little Fluke or used Keithley or something. Just anything but on UPS/Fedex.

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 13, 2015, 10:04:12 pm
content: Quote from: michaeliv on August 13, 2015, 05:19:17 pmI've seen analog GWs in the local flea market before. Can't believe they would peddle those probably spoilt ones for >S$100.Other than that, there is really not much info on GW at all. My gut doesn't go really well with the brand/model though; it's just one of those things that does not seem to instill confidence on first brief glance. Not that I'm not open to anything though.

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 14, 2015, 12:13:11 am
content: Quote from: thejoggingmat on August 13, 2015, 10:04:12 pmOh, and I just realised the Rigol is actually slightly cheaper.

author: michaeliv
author_rank: Frequent Contributor
timestamp: August 14, 2015, 12:30:19 am
content: Quote from: thejoggingmat on August 14, 2015, 12:13:11 amHow is it slightly cheaper ? (PS The EEVBlog discount applies to both).And if anyone has any opinion on this vs the Rigol please do tell, one disadvantage I see is that it has a 7ns rise time vs 4ns on the Rigol.

author: Electro Fan
author_rank: Super Contributor
timestamp: August 14, 2015, 12:39:08 am
content: Quote from: thejoggingmat on August 13, 2015, 09:56:37 pmA couple thoughts: 1) it says worldwide expedited; generally the faster you have something shipped the more expensive it costs; it's worth seeing if there is a slower less expensive shipping alternative. The key thing is that it is trackable and insured. 2) It might be worth contacting Rigol directly to see if they have a distributor who is set up in Singapore or the region to serve Singapore; kind of hard to believe that Rigol wouldn't have good market coverage in Singapore.Update: using the shopping cart at tequipment.net shows some less expensive alternatives - not sure if they are trackable and insured but if so the overall cost just went down about $125 and you can save another $24 or so with the EEV discount. And this should be worst case - it seems likely there is a seller closer to you.

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 14, 2015, 02:08:11 am
content: Quote from: Electro Fan on August 14, 2015, 12:39:08 amThe sole distributor (I've just double checked) quoted me S$1200 before 7% tax. There really isn't a demand for Rigols at all here. Case in point: My old classmate from high school who's studying EE tells meAgilentKeysight scopes are the 'preferred choice' and to obligatory purchase & use.Couple grand a piece for a DSO1xxxx series (can't remember the model).The 'express mail' uses EMS once it reaches Singapore based on past experience. Which means the local mail provider (like USPS is to USA) fulfils the shipment when it reaches Singapore. My scope will most likely be dented & dinged, and the packaging will have holes from all the manhandling.

author: thejoggingmat
author_rank: Regular Contributor
timestamp: August 14, 2015, 02:21:59 am
content: Quote from: michaeliv on August 14, 2015, 12:30:19 amMy bad, forgot to factor in the discount.

author: Lightages
author_rank: Unknown
timestamp: August 14, 2015, 02:51:38 am
content: One seller I found on aliexpress:http://www.aliexpress.com/item/Four-channel-Digital-Oscilloscope-RIGOL-DS1054Z-with-50-MHz-bandwidth-1-GSa-s-real-time-sample/32305344003.html

author: singapol
author_rank: Frequent Contributor
timestamp: August 14, 2015, 04:09:32 am
content: Quote from: thejoggingmat on August 14, 2015, 02:08:11 amDear young friend,EEvblog and local people have bought stuffs from China and Hong Kong.The packages have arrived without much damage.You seem to be somewhat negative and suspicious...haha. If that's the case then there are indeed local brick and mortar shops that sell test equipment for reasonable prices taking into account the cost of doing business here.Coming back to scopes proper Rigol 1054Z is 50Mhz. 4 channel scope.Since you don't trust overseas' shipping do you really need 4 channels at this point in time? FYI you can get 100Mhz. 2 channels DSOlocally for Sg$800. Cheaper than the quoted local Rigol. Take your pic Siglent,Hantek,Owon,GW,Unitrend (UT) among others.And for a "low" price of Sg$380 You can buy a 25Mhz. 500Msamoles Siglent. That's if you want a brand new DSO. For used analog scopes that's another discussion at your prefered budget. Let me know and I can take you around the shops so You can see for yourself.Do your research properly first.Not all DSO are made equal.

author: EEVblog
author_rank: Unknown
timestamp: August 14, 2015, 05:28:52 am
content: Quote from: Electro Fan on August 13, 2015, 06:54:56 amYup, this.

author: ez24
author_rank: Super Contributor
timestamp: August 14, 2015, 06:14:43 am
content: My adviceMake sure what you get has a warranty. Most will not if they cross a border, I learned this the hard way.