EEVblog Electronics Community Forum

EEVblog => EEVblog Specific => Topic started by: EEVblog on September 21, 2018, 03:25:16 am

Title: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: EEVblog 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.

https://www.youtube.com/watch?v=6AzXQ7sfYPU (https://www.youtube.com/watch?v=6AzXQ7sfYPU)
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: blueskull on September 21, 2018, 03:41:17 am
Which dumpster did you find this one from?
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: TheSteve 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?
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: bitseeker on September 21, 2018, 05:57:01 am
Looking forward to the hacking thread(s). :-/O :D
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: v81 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.

(https://i.imgur.com/wT68aGk.jpg)
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: Smokey on September 21, 2018, 11:08:42 am
"Don't turn it on... Take it apart... then while it's apart, turn it on..."

:)
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: free_electron on September 21, 2018, 12:23:27 pm
joshua.
list games
global thermonuclear war.

its a wopr !
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: free_electron 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.
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: EEVblog 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  :-//
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: EEVblog 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
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: GeorgeOfTheJungle 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?
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: tchicago 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.

Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: blueskull on September 21, 2018, 05:15:35 pm
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.

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

Yep, the best  :-+
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: snoopy 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
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: SparkyFX 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!
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: tautech 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.
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: snoopy 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 ?
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: cpuerror 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.
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: Kleinstein 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).
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: elgonzo 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.
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: firewalker 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?

Alexander.
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: nctnico 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.
Title: Re: EEVblog #1124 - Rigol 7000 Oscilloscope Teardown
Post by: thm_w on September 24, 2018, 07:50:36 pm
I'm sure the fan is nothing special but fine https://canada.newark.com/adda/ad1212db-a71gl/axial-fan-120mm-12vdc-57-205cfm/dp/58P0847?CMP=AFC-OCTOPART