Author Topic: EEVblog #674 - Rigol DS1054Z Teardown  (Read 43355 times)

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Offline EEVblog

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EEVblog #674 - Rigol DS1054Z Teardown
« on: October 15, 2014, 10:25:01 PM »
Dave tears down the new US$399 Rigol 4 channel 50MHz DS1054Z oscilloscope.
How can they get such incredible value for the price?

Datasheets:
Hittite HMCAD1511 ADC: https://www.hittite.com/content/documents/data_sheet/hmcad1511.pdf
ProASIC 3 FPGA https://www.actel.com/documents/PA3_DS.pdf
SRAM: http://www.cypress.com/?mpn=CY7C1360C-200BGC
Freescale iMX283 Applications Processor: cache.freescale.com/files/32bit/doc/data_sheet/IMX28CEC.pdf

 

Offline dentaku

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #1 on: October 15, 2014, 11:42:00 PM »
This puts the DS1074Z in a weird place where it's still a nice 4CH scope for the price but not terribly different from the DS1054Z which is quite a bit cheaper.
 

Offline godFather89

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #2 on: October 15, 2014, 11:43:02 PM »
I'm curious to see a DS1074Z-S teardown. Maybe we can mod the DS1054Z to add signal generation functionality  :o.
 

Offline Towger

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #3 on: October 15, 2014, 11:49:02 PM »
I'm curious to see a DS1074Z-S teardown. Maybe we can mod the DS1054Z to add signal generation functionality  :o.

The 'S' version has a separate daughter board module, which from memory plugs into the pins on the top right of the main pcb. From there leads go over to the cutouts on the left.

There are photos of it on the net.
 Update 'where' were photos on the net... which I now cannot find.
« Last Edit: October 15, 2014, 11:58:29 PM by Towger »
 

Offline ziq8tsi

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #4 on: October 16, 2014, 12:26:51 AM »
I had noticed that the LEDs for the LA and Source buttons flash briefly through the holes in the front panel at power on.

I am not sure it is even a mistake to fit them.  Theoretically they could stock four different populations of that board internally, and then use the correct one when assembling each model.  That could very easily cost more than the LED or two it saves.
 

Online coppice

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #5 on: October 16, 2014, 12:29:33 AM »
Why is buying the 1052E crazy? Its now available for around half the price of the 1054Z
 

Online coppice

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #6 on: October 16, 2014, 12:41:41 AM »
The Chinese characters down the edge of the power supply board are the colours of the attached wires. Clearly these are instructions to the assembly workers, and need to be in Chinese.
 

Offline Towger

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #7 on: October 16, 2014, 01:03:29 AM »
The Chinese characters down the edge of the power supply board are the colours of the attached wires. Clearly these are instructions to the assembly workers, and need to be in Chinese.

Very true. I have some RGB LED strips in front of me, the contacts are marked R G B. Do you think the Red wire goes to the R and Green wire goes to the G and Blue wire goes to the B....  They never even tested them, when connected to its own controller Red coloured button = Green Leds and so on...
 

Offline mikeselectricstuff

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #8 on: October 16, 2014, 01:17:44 AM »
The Chinese characters down the edge of the power supply board are the colours of the attached wires. Clearly these are instructions to the assembly workers, and need to be in Chinese.

Very true. I have some RGB LED strips in front of me, the contacts are marked R G B. Do you think the Red wire goes to the R and Green wire goes to the G and Blue wire goes to the B....  They never even tested them, when connected to its own controller Red coloured button = Green Leds and so on...
This sometimes happens because they change LED types to ones with a different pinout
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Offline KD0CAC John

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #9 on: October 16, 2014, 01:29:13 AM »
BUT , can it be hacked to 100mHz ;)
 

Offline JJalling

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #10 on: October 16, 2014, 03:10:18 AM »
BUT , can it be hacked to 100mHz ;)

Or maybe even 100MHz ;)

/Jonas
 

Offline Macbeth

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #11 on: October 16, 2014, 03:20:44 AM »
BUT , can it be hacked to 100mHz ;)

Or maybe even 100MHz ;)

/Jonas
I'd love an old analogue 100mHz scope. But just imagine the amount of phosphor needed? I think they rely on pen on paper plotting for that kind of thing.
 

Offline Hypernova

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #12 on: October 16, 2014, 03:30:18 AM »
*oops, this is what you get when you leave a tab open for too long before replying*

The printing of chinese characters ("Black", "Yellow" etc) on the power board is to aid the production line workers. They are most likely not educated enough to know what they are putting together. So it is safer to just print the character representing the matching wire colour on the board.
« Last Edit: October 16, 2014, 03:31:56 AM by Hypernova »
 

Offline Rasz

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #13 on: October 16, 2014, 04:12:58 AM »
if its really a varicap + digital potentiometer I wouldnt even bother with reverse engineering software, just whack attiny in there and additional button that forces full bandwidth (I assume they use this design so you can limit bandwidth to cut aliasing, so no point hard modding to 100MHz).
that LA also looks doable, just need fpga + memory + 2 stabilizers, and a dump from someone who performed firmware upgrade (again assuming firmware upgrade also upgrades fpga firmware)

lovely compact design at a great price point, bug thumbs up to rigol (unlike their shitty still broken power supplies)
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Offline hans

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #14 on: October 16, 2014, 04:13:09 AM »
I'm curious to see a DS1074Z-S teardown. Maybe we can mod the DS1054Z to add signal generation functionality  :o.

The 'S' version has a separate daughter board module, which from memory plugs into the pins on the top right of the main pcb. From there leads go over to the cutouts on the left.

There are photos of it on the net.
 Update 'where' were photos on the net... which I now cannot find.

https://www.flickr.com/photos/jameslothian/sets/72157645222357567/
(pictures are not mine; credit to James!)

The 1074Z-S still fits a gap where you want a low-end scope with signal generator or logic analyzer, but don't need the 100MHz and could save 170$ that way.
Having said that, the 1074Z-S is a 840$ scope, and the 1104Z-S is a 1000$ scope. At that point the 160$ difference is there, but clearly not as spectacular.

« Last Edit: October 17, 2014, 02:58:16 AM by hans »
 

Offline sergey

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #15 on: October 16, 2014, 04:32:35 AM »
Why is buying the 1052E crazy? Its now available for around half the price of the 1054Z

Nor really if we're talking about prices of brand-new units from rigol and like official distributors? Sure if you can find 1052E for a half of the price it's not crazy at all :)
 

Offline NANDBlog

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #16 on: October 16, 2014, 04:46:36 AM »
I really liked the overlay pictures.  :-+
 

Offline sweesiong78

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #17 on: October 16, 2014, 04:47:53 AM »
dave, start pronouncing 'Z' like we do, 'zee'
 

Offline Warhawk

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #18 on: October 16, 2014, 04:48:32 AM »
Yesterday We had a meeting with two Rigol representatives (short portfolio presentation) who had no idea that ds1054z exists  :-DD
A second thing which blew my mind was a number of Rigol employees. Anyway. I still like their devices even after this experience  :-+
« Last Edit: October 16, 2014, 04:52:08 AM by Warhawk »
 

Offline sergey

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #19 on: October 16, 2014, 04:59:52 AM »
A second thing which blew my mind was a number of Rigol employees.

This makes me curious what the number of Rigol employees is. :)
 

Offline Lukas

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #20 on: October 16, 2014, 05:08:52 AM »
The all-discrete frontend really impresses me. Especially since it's 2014 and you could just buy a LMH6518 and call it a day. Way more expensive though...

I cannot find a comparator for the trigger, so it seems like they're doing digital trigger based on the ADC samples. When sampling on 4 channels ad 250MSa/s each with 100MHz bandwidth, that's barely over nyquist. Interesting to see what trigger jitter is like...
 

Offline Warhawk

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #21 on: October 16, 2014, 05:11:49 AM »
A second thing which blew my mind was a number of Rigol employees.

This makes me curious what the number of Rigol employees is. :)

I hope I will not break a gentleman's code if I tell that a presentation mentioned +400 employees. I expected way more...


update:
Well, I see it is not confidential:
http://rigol.en.alibaba.com/company_profile.html

« Last Edit: October 16, 2014, 05:13:25 AM by Warhawk »
 

Online Monkeh

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #22 on: October 16, 2014, 05:26:25 AM »
dave, start pronouncing 'Z' like we do, 'zee'

DIAF.
 

Offline Rutger

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #23 on: October 16, 2014, 05:45:43 AM »
dave, start pronouncing 'Z' like we do, 'zee'

So how do you pronounce "C" (also 'zee') ?

You Yanks don't know proper English.

C = zee
Z = set
« Last Edit: October 16, 2014, 05:51:39 AM by Rutger »
 

Offline Rutger

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Re: EEVblog #674 - Rigol DS1054Z Teardown
« Reply #24 on: October 16, 2014, 05:49:23 AM »
I can't wait for the full review, I have already ordered one and can't wait to get it.

I was going to buy the DS1074z, but that is really obsolete at this point, because after the 'upgrade' they would both be 100MHz with the same features.
Maybe the Intensity Grading isn't as good, but I for almost $ 200 less I can live with that.
« Last Edit: October 16, 2014, 06:08:33 AM by Rutger »
 


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