Author Topic: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope  (Read 21813 times)

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Online nctnico

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #350 on: December 03, 2018, 07:52:36 am »
NAND corruption, PSU failures etc shouldn't happen in any equipment under 5 yrs old.
The real world thinks it's much better to pay half price and accept a tiny chance of failure.
Mistakes are inevitable but there is a big difference between receiving a bag with capacitors (if you are lucky) and a piece of equipment being transported and repaired for free. Also lets not forget about the difference in sales volumes. Anecdotal evidence tends to exclude that.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 
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Online nctnico

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #351 on: December 03, 2018, 07:54:43 am »
You seem to forget Lecroy is selling Siglent gear. So on one hand you have a company which builds really high-end oscilloscopes and on the other hand sells low end gear
Again, this lacks any dedication to the details discussed here...
Here, I fixed the selective quoting for you so now all the details are within context as it should be.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline Fungus

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #352 on: December 03, 2018, 08:08:45 am »
Problem that comes with this is that a small failure rate tends to come with vocal customers. Look at all the shit Apple get.

You need good customer service.

(and a way of knowing if the phone has been dropped in water then dried out before claiming "it died for no reason at all!")

Edit: I should say that the stuff is literally disposable pricing now. The whole scope comes in less than a decent vertical plugin for a Tek 7000 would cost today.

Result: A new class of customer. People who would never think of owning a Tek 7000 are buying this cheap stuff.
 

Online bd139

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #353 on: December 03, 2018, 08:10:24 am »
Very true on both counts.

 

Online Martin72

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #354 on: December 03, 2018, 08:16:11 am »
Maybe my expetations are too high, maybe I shouldn´t compare affordable scopes automatically with the ones I work everyday with in our testfield.
But I do, perhaps in the hope that someday  a "B-Brand" scope launch into the market, which makes older good quality stuff forgettable.

My impressions by playing around with the 5074 are that this one could do it.
If rigol optimize the firmware proper, the hardware can have the capability for it - I´ll see it in the next days at work.
By the way, the 1mV/div range is bandwith limited - a "B" pops up by the choose.
At 2mV/div it disappears.




« Last Edit: December 03, 2018, 08:43:20 am by Martin72 »
 

Online 0xdeadbeef

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #355 on: December 03, 2018, 11:00:00 am »
You seem to forget Lecroy is selling Siglent gear. So on one hand you have a company which builds really high-end oscilloscopes and on the other hand sells low end gear
Again, this lacks any dedication to the details discussed here...
Here, I fixed the selective quoting for you so now all the details are within context as it should be.
It's not my lack of quoting skills that was in question.
Trying is the first step towards failure - Homer J. Simpson
 

Offline glenenglish

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #356 on: December 03, 2018, 11:45:24 am »
I agree that 2 GSps is an overkill for a 100 meg scope but if I like it I will upgrade it to 350M, and apples for apples, dollar for dollar, it is hard to beat.

It's not brickwall filtering of course. That's the -3dB.

My experience is that the minimum oversample rate of 4x BW gives me the pictures I want if there is a bus fight.. This is quite obvious on my 5GS tek scope's response.

it will be interesting to measure the rolloff rate of the 100meg at 2GSps. IE what Rigol do with the filtering.

beyond 350 MHz, probing accurately becomes more difficult also.
 

Online Martin72

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #357 on: December 05, 2018, 05:21:32 am »
Some functions are not avaible and "greyed out", perhaps functional with an option/firmware upgrade, seems normal to me.
BUT:
"Options Install", "Online Upgrade" and "Local Upgrade" are also deactivated... :-//


Got a answer from rigol today:


The fields are self-activating.

A detection of a USB-stick with options-license file will activate the "Options Install" Button.
A detection of a USB-stick with a firmware-file will activate the "Local Upgrade" Button and if the scope is online, you got access to the online upgrade button.



 

Offline Fungus

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #358 on: December 05, 2018, 07:39:23 am »
I agree that 2 GSps is an overkill for a 100 meg scope

When you turn on all four channels it's less, proportionally.

When you unlock 350MHz it's about right.
 

Offline mrpackethead

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Re: EEVblog #1146 - Unconfirmed 'Crack' of Rigol 5000
« Reply #359 on: December 06, 2018, 06:19:32 pm »
A unconfirmed claim of of the MSO5000 has been made by a chinese student.   

Quote
"Well, I have patched the firmware, let it jump out license verify produce. But I can't make it public until next year March. Because Rigol sold out about less than 300 units now.

In fact I'm working on my friend's scope and I havent ordered yet (lack of money...Im just a ungraduated). I m wonder if I make it public prematurely, maybe they will fix it and it can't be cracked anymore.

Btw, there's no keygen for 5000 series oscilloscope because it cant be realize. The only way to crack it is to patch firmware.

The detail of crack this scope I will
publish it to my github when my scope is successfully cracked."


Sadly he does not want to provide the info, I think he is worried that Rigol will patch the issue before he has collected enough money to buy his own.      If he was able to crack it, i'm sure that others will be able to do it as well, pretty quickly.   if he wants the 'claim to fame' of being the guy who cracked it, he will need to publish it before anyone else does i guess.   though it seems he just wants the 350Mhz scope for the 70Mhz price.
On a quest to find increasingly complicated ways to blink things
 

Online 2N3055

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #360 on: December 06, 2018, 06:28:16 pm »
I agree that 2 GSps is an overkill for a 100 meg scope

When you turn on all four channels it's less, proportionally.

When you unlock 350MHz it's about right.
Just to make sure it has 8/4/2 GS/sec for  4ch and 8/2 GS/sec for 2 ch.

More than Nyquist is useful. Most scopes go way more than sticker spec. Keysight wrote WP in which they basically said that you need 5x oversampling to make it work real well with real world filtering and such. If speed and memory is there no harm done. At least some members wont complain that Rigol shows points that don't exist.  ^-^
 

Online Martin72

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #361 on: December 07, 2018, 09:59:13 am »
Quote
At least some members wont complain that Rigol shows points that don't exist.


For example ?
 

Online 2N3055

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #362 on: December 07, 2018, 10:27:10 am »
Some time ago was discussion where some members didn't believe that you can reconstruct signal if you don't have many samples per period....
I was joking about that...  Not important..
 

Online Martin72

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #363 on: December 07, 2018, 10:41:21 am »
Ah, okay...
And it makes sense.
Our older LeCroy Waverunner models ( 1999-2002)showing us everything in the right manner, although they have "only" 500Mpts/Sa by 200 Mhz BW.
A few months ago, a LeCory sales man told me the "right ratio" between samples and bandwith - unfortunenatly I can´t remember the value at the moment, but I´m sure it was less then expected.
Today I´ll take my 5074 to work, test it next week under "real conditions".
As I mentioned before, Rigol itself compares it with the 2000er models from Tek and Keysight.
The 7000s series they compare it with the 3000s series of Tek and Keysight.
Understatement or true sight...



 

Online 0xdeadbeef

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #364 on: December 07, 2018, 10:49:33 am »
The MSO5000 hasn't got "smart" probe interfaces -> entry level as Keysight DOSX2000, R&S RTB2000 etc.
The DS7000 has them, so it's targeted at the "one above entry level" like Keysight DSOX3000, R&S RTM3000 etc.

Trying is the first step towards failure - Homer J. Simpson
 

Online nctnico

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #365 on: December 07, 2018, 05:25:52 pm »
Quote
At least some members wont complain that Rigol shows points that don't exist.

For example ?
AFAIK on the DS1000Z the sin x/x is implemented incorrectly which hasn't been fixed (yet).
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline Fungus

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #366 on: December 07, 2018, 07:59:46 pm »
AFAIK on the DS1000Z the sin x/x is implemented incorrectly which hasn't been fixed (yet).

Nope. There's been entire threads discussing this but you're still spreading anti-Rigol FUD anyway.

Short version: Turning sin(x)/x "off" when you're in dots mode with more than channels turned on at full sample rate (and only in dots mode with more than two channels turn on at full sample rate) doesn't seem to disable it completely, it seems to use an alternate reconstruction filter instead. But we're not 100% sure because you have to go really close to the scope's bandwidth limit to even see it.

That's a completely different thing than "sin x/x is implemented incorrectly".
 

Online Martin72

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #367 on: December 08, 2018, 04:09:03 am »
First Time measuring at work, spi-decoding….
BIG disappointement…



It decodes from the screen, what you see is what you get, if not all data are displayed, then you couldn´t see all the data in the event table….. :--

Turn one channel off, all data are lost - Lecroy WS3024 and EVEN the smaller, much cheaper siglent 1104 can do it, they decode it from, the memory….and this one do it like the 1054Z  :--
Hope they correct it, so much memory inside and then decoding from the screen....
And:
The event table...You have to turn it on in the menu, good.
But:
If you press the "Back" button or if you turn on another channel, it disappears.... ::)
You have to go back in the menu and turn it on again....

Rigol, please fix it - Event table on/off only when you press the specific button.
And pretty please rigol....decode the data from the memory......PLEASE.
 

Online dr.diesel

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #368 on: December 08, 2018, 04:11:59 am »
And pretty please rigol....decode the data from the memory......PLEASE.

They never bothered to fix it in the 4000s.

Offline rsjsouza

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #369 on: December 08, 2018, 04:30:22 am »
And pretty please rigol....decode the data from the memory......PLEASE.

They never bothered to fix it in the 4000s.
Nope. The DS4000 series decodes from the acquisition memory and not from the video buffer.
http://www.eevblog.com/forum/testgear/rigol-scopes-serial-decoding/
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Online nctnico

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #370 on: December 08, 2018, 05:59:55 am »
First Time measuring at work, spi-decoding….
BIG disappointement…



It decodes from the screen, what you see is what you get, if not all data are displayed, then you couldn´t see all the data in the event table….. :--
Are you friggin' kidding? How can that happen in a scope released in 2018? If you think you will ever need decoding then return it and buy it again when Rigol has implemented decoding the full memory.
« Last Edit: December 08, 2018, 06:01:35 am by nctnico »
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Online bd139

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #371 on: December 08, 2018, 06:12:36 am »
$10 POS aliexpress logic analyser does better than that.
 

Offline Fungus

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #372 on: December 08, 2018, 06:19:23 am »
$10 POS aliexpress logic analyser does better than that.

My advice: Use one of those, then and leave the 4-channel, 350Mhz, 200Mpoint memory, $900 oscilloscopes for the rest of us.  :popcorn:
 
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Offline mrpackethead

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #373 on: December 08, 2018, 06:20:14 am »
$10 POS aliexpress logic analyser does better than that.

My advice: Use one of those, then and leave the 4-channel, 350Mhz, 200Mpoint memory, $900 oscilloscopes for the rest of us.  :popcorn:

Allegeledy, 1Ghz
On a quest to find increasingly complicated ways to blink things
 

Online bd139

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Re: EEVblog #1146 - New Low Cost Rigol MSO5000 Oscilloscope
« Reply #374 on: December 08, 2018, 06:27:10 am »
$10 POS aliexpress logic analyser does better than that.

My advice: Use one of those, then and leave the 4-channel, 350Mhz, 200Mpoint memory, $900 oscilloscopes for the rest of us.  :popcorn:

I do exactly that already  :-DD
 


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