Author Topic: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown  (Read 8330 times)

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Offline EEVblogTopic starter

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EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« on: September 21, 2018, 03:25:16 am »
Inside the new Rigol 7000 Series oscilloscope with custom ASIC's.
Also a look at the bootloader code for potential hacks.

 

Offline TheSteve

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #1 on: September 21, 2018, 04:41:07 am »
Wasn't it determined in the past that Rigol was using resistors to indicate hardware revs but they aren't actually connected to anything?
VE7FM
 

Offline bitseeker

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #2 on: September 21, 2018, 05:57:01 am »
Looking forward to the hacking thread(s). :-/O :D
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Offline v81

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #3 on: September 21, 2018, 07:19:38 am »
Looks like that mesh has cutouts that perfectly match the notches where the fan clips in and where the IEC connector sits.

« Last Edit: September 21, 2018, 07:22:11 am by v81 »
 
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Offline Smokey

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #4 on: September 21, 2018, 11:08:42 am »
"Don't turn it on... Take it apart... then while it's apart, turn it on..."

:)
 

Offline free_electron

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #5 on: September 21, 2018, 12:23:27 pm »
joshua.
list games
global thermonuclear war.

its a wopr !
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Offline free_electron

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #6 on: September 21, 2018, 12:24:55 pm »
Wasn't it determined in the past that Rigol was using resistors to indicate hardware revs but they aren't actually connected to anything?
many designs use that. they use the vision recognition systems down the line to see what flies by.
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Offline EEVblogTopic starter

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #7 on: September 21, 2018, 01:36:38 pm »
Wasn't it determined in the past that Rigol was using resistors to indicate hardware revs but they aren't actually connected to anything?

I don't recall  :-//
 

Offline EEVblogTopic starter

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #8 on: September 21, 2018, 01:37:46 pm »
Looks like that mesh has cutouts that perfectly match the notches where the fan clips in and where the IEC connector sits.

So it does, well spotted
 

Offline GeorgeOfTheJungle

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #9 on: September 21, 2018, 02:18:37 pm »
Shouldn't turn it on for too long without the fan in place Mr. Jones!

I don't like Rigols: the UI is a disaster. They're cheap, though: lots of bang per buck. But this one isn't cheap so... what's the point?
The further a society drifts from truth, the more it will hate those who speak it.
 

Offline tchicago

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #10 on: September 21, 2018, 05:12:51 pm »
Shouldn't turn it on for too long without the fan in place Mr. Jones!

I don't like Rigols: the UI is a disaster. They're cheap, though: lots of bang per buck. But this one isn't cheap so... what's the point?

The Rigol UI kept bothering me too. Lots of lag in places that should be smooth and lots of UI inconsistencies. Extremely laggy software-based serial interface decoding... So I eventually sold my 1000z and went for Keysight MSO2xxx, which is in the same price range as this 7000.

 

Offline GeorgeOfTheJungle

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #11 on: September 21, 2018, 07:55:42 pm »
The same reason why I hate Tek. Keysight scopes are REALLY incredibly responsive.

Yep, the best  :-+
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Offline snoopy

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #12 on: September 21, 2018, 10:44:01 pm »
There's hardly anything on the pcb !!

I bet you Tektronix and Keysight never saw this coming !

The chinese are slowly moving up the scope performance ladder. Won't be long before they are making scopes with GHz front ends !

cheers
 

Offline SparkyFX

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #13 on: September 22, 2018, 02:19:39 am »
It might be a bit misleading to check the heatsink temperature without the airflow it was designed for, otoh checking if a failing fan triggers overtemperature protection imho is worthwhile.

Thanks for showing!
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Online tautech

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #14 on: September 22, 2018, 02:49:11 am »
The chinese are slowly moving up the scope performance ladder. Won't be long before they are making scopes with GHz front ends !
Isn't that just what the 7000 series offers ?

The Siglent SDS5000X 350, 500 and 1 GHz models will be out in a month or two as well.
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Offline snoopy

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #15 on: September 22, 2018, 10:48:02 am »
The chinese are slowly moving up the scope performance ladder. Won't be long before they are making scopes with GHz front ends !
Isn't that just what the 7000 series offers ?

The Siglent SDS5000X 350, 500 and 1 GHz models will be out in a month or two as well.

Has Siglent rolled its own ASICs yet ?
 

Offline cpuerror

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #16 on: September 22, 2018, 07:31:51 pm »
Interesting that they relied on so much onboard generation for the individual voltage rather than use the power supply for at least the sundry voltage like the 5v rail. Seems like wasted board space on an expensive board.
 

Online Kleinstein

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #17 on: September 22, 2018, 08:43:44 pm »
The board does not look that cramped - so in a budget product they could have reduced board size a bit (e.g. 50%), but this is not such a bargin product. They may need the spacing anyway to get to the other side of the case and more spacing also helps with cooling. The board may not be that many layers and this that expensive.  It is a different thing in the 1054 and similar, where every dollar counts.

We may find a more cramped board in a future version with maybe additional features (e.g. generator).
 

Offline elgonzo

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #18 on: September 22, 2018, 11:41:53 pm »
Looks like that mesh has cutouts that perfectly match the notches where the fan clips in and where the IEC connector sits.

Noticed this as well. Considering that the fan sucks air into the scope, i guess the mesh was intended as dust filter.
I have no clue why they stuck it on the metal instead. Not sure if this intentional or not, but if it is a screw-up i would be surprised that Rigol didn't catch it during pilot production.
 

Offline firewalker

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #19 on: September 23, 2018, 09:34:57 am »
That honeycomb on the back reminds me Rohde and Schwarz design.

Is the PSU off the shelf one?

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Online nctnico

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Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
« Reply #20 on: September 23, 2018, 11:23:12 pm »
For this price I would have expected a better quality fan. Recently I replaced an Adda fan because it started to make rattle sounds after a couple of days worth of operating.
« Last Edit: September 23, 2018, 11:26:45 pm by nctnico »
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline thm_w

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