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Author Topic: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown  (Read 15466 times)

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Online EEVblog

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EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« on: April 04, 2017, 11:02:47 AM »
Teardown of the  new *unreleased* Siglent SDS1202X-E 200MHz $379 oscilloscope!
NOTE: This is the 100MHz 1102E which will never be released, but it's the same hardware.

 
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Offline Neo2199

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #1 on: April 04, 2017, 11:17:23 AM »
This might inspire the Rigol to release something new maybe?
 

Offline KrZ

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #2 on: April 04, 2017, 12:46:01 PM »
Thanks, I'm thrilled about this. I hope you do a performance review, especially fft. I have been holding off buying a digital scope since the usually recommended rigol is getting "old"
 

Offline ProBang2

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #3 on: April 04, 2017, 12:55:34 PM »

200 MHz bandwith, serial decoding (incl. CAN!) as standard, better FFT and probably faster responding as the 1054z - that all together for US 379$.

WOW! Very impressive! That´s really hard to beat!

Seems, the only leftover advantage of the Rigol 1054z is: It has four channels...
(Imagine a 1204X-S for US 399$)
Let´s hope, they don´t weaken with the firmware.
Obviously: Time for the next move of Rigol. In the meantime:

I am really looking forward to the review of the 1202X-E.    :popcorn:
 

Online tautech

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #4 on: April 04, 2017, 01:02:27 PM »
Only 2 relays on the front end as the X-E doesn't have a 50 \$\Omega\$ input AFAIK, only 1 M.
The mainboard is very much the same size as the C*L and Plus models.

PSU looks exactly the same as used in C*L models too and BTW I've not heard of any Siglent DSO PSU failures despite what you always mention of the caps used in Siglent PSU's.  :horse:
How long have they been using Leylon ? I think at least since the first teardowns you did, probably longer so they can't be that bad or Siglent would've moved to another brand.

Notice Siglent roll their own PSU, not some off the shelf item that they can't maintain the spec and QC of.
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Offline kgharibyan

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #5 on: April 04, 2017, 01:33:15 PM »
PA


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Offline Villain

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #6 on: April 04, 2017, 01:44:40 PM »
this might sound like a stupid question but how can you decode spi with 2 inputs only?
 

Offline gir

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #7 on: April 04, 2017, 02:14:08 PM »
dave, /bin/ash is the busybox shell - you've got superuser access right into the linux environment there -  woohoo!

where's the dump though?
 

Online BravoV

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #8 on: April 04, 2017, 02:18:45 PM »
Definitely a great moment now to see the competing parties raising up their bet on entry level scopes.  :clap:

We as the potential customers are winning.

Offline TNorthover

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #9 on: April 04, 2017, 02:36:18 PM »
this might sound like a stupid question but how can you decode spi with 2 inputs only?

You would only get one direction, and it'd cover all devices, but a CLK/DATA pair seems like something you could make use of.
 

Online rdl

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #10 on: April 04, 2017, 02:43:39 PM »
It looks nice, much cleaner front panel than the ugly Rigol stuff. The lack of rust inside is encouraging. Hopefully that is consistent and not that Dave was just lucky or it was a special unit.

I wish the manufacturers would get away from the nursery school color schemes though. Are the only trace color options really yellow and pink? Something wrong with the traditional blue-green of crt scopes?
 

Online tautech

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #11 on: April 04, 2017, 03:00:45 PM »
It looks nice, much cleaner front panel than the ugly Rigol stuff. The lack of rust inside is encouraging. Hopefully that is consistent and not that Dave was just lucky or it was a special unit.

I wish the manufacturers would get away from the nursery school color schemes though. Are the only trace color options really yellow and pink? Something wrong with the traditional blue-green of crt scopes?
Blue and green are the colours for ch 3 and 4 on Siglent DSO's.  ;)

Until I get one in my hot hands I think the case is very similar to the existing C*L and Plus models and while I'm guessing probably part of the reason they have kept the price down by not having to rework the case.
I'll grab a CML Plus and compare it against the front and rear shots early in the vid.


Nah, the power button is bottom left, not a push button switch on top of the case like the C*L models.
Option buttons are below the display not on the right of the display like C*L models and this configuration brings it into line with most other Siglent DSO's.
« Last Edit: April 04, 2017, 03:07:32 PM by tautech »
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Online Marinated

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #12 on: April 04, 2017, 03:13:14 PM »
Notice Siglent roll their own PSU, not some off the shelf item that they can't maintain the spec and QC of.

I don't want to derail but that is a slightly surprising and suspiciously silly slippery slope argument.  It's not like they depend on the performance of any other third party components in this design amirite?
 

Online tautech

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #13 on: April 04, 2017, 03:23:15 PM »
Notice Siglent roll their own PSU, not some off the shelf item that they can't maintain the spec and QC of.

I don't want to derail but that is a slightly surprising and suspiciously silly slippery slope argument.  It's not like they depend on the performance of any other third party components in this design amirite?
Only offered as an observation.

Over the years there have been a # of threads here with failures of scope PSU's, in many cases they have not been made by the scope manufacturer. Could you call this modus operandi a weak link ? I do.
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Offline Muxr

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #14 on: April 04, 2017, 03:44:24 PM »
this might sound like a stupid question but how can you decode spi with 2 inputs only?
SPI is usually, Clock, Data and Chip Select. You only need clock and data to decode SPI.
 

Offline JPortici

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #15 on: April 04, 2017, 03:47:14 PM »

200 MHz bandwith, serial decoding (incl. CAN!) as standard, better FFT and probably faster responding as the 1054z - that all together for US 379$.

WOW! Very impressive! That´s really hard to beat!

Seems, the only leftover advantage of the Rigol 1054z is: It has four channels...
(Imagine a 1204X-S for US 399$)
Let´s hope, they don´t weaken with the firmware.
Obviously: Time for the next move of Rigol. In the meantime:

I am really looking forward to the review of the 1202X-E.    :popcorn:
hopefully they'd add MSO capability to ext trigger. i'm sure it has to be sampled at the same rate as the analog channels anyway
 

Offline coppice

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #16 on: April 04, 2017, 04:25:41 PM »
Notice Siglent roll their own PSU, not some off the shelf item that they can't maintain the spec and QC of.

I don't want to derail but that is a slightly surprising and suspiciously silly slippery slope argument.  It's not like they depend on the performance of any other third party components in this design amirite?
Only offered as an observation.

Over the years there have been a # of threads here with failures of scope PSU's, in many cases they have not been made by the scope manufacturer. Could you call this modus operandi a weak link ? I do.
People who do one thing tend to get really good at it. As long as you avoid the cowboy suppliers, a PSU from a specialist is likely to give far better results than one designed in house as a side line. Also, if a commercially available supply is used, its generally cheap and simple to replace.
 

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #17 on: April 04, 2017, 05:52:23 PM »
this might sound like a stupid question but how can you decode spi with 2 inputs only?

SCLK, and MISO or MISO (take your pick), CS is done with timeout.
 

Online EEVblog

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #18 on: April 04, 2017, 05:54:55 PM »
dave, /bin/ash is the busybox shell - you've got superuser access right into the linux environment there -  woohoo!
where's the dump though?

I'll dump the final production 200MHz model, it's on the Fedex truck.
 

Online tautech

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #19 on: April 04, 2017, 06:02:17 PM »
PA


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Maybe soon I've been hinted, shhh don't tell everyone.  ;)
But I think it will be an option.  :(
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Offline dgarlans

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #20 on: April 04, 2017, 10:01:50 PM »
When will the scope actually be available? I'm in the market for a new scope sometime in the next couple months and this one seems pretty nice for the price. It seems like the -E version isn't actually available yet. I was getting worried seeing only $550+ scopes on Amazon.
 

Online firewalker

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #21 on: April 04, 2017, 10:15:16 PM »
They should really allow Triger when using serial decoding!

Alexander.
Become a realist, stay a dreamer.

 

Offline Bud

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #22 on: April 04, 2017, 10:30:09 PM »
Finally a board design that does not look as  being stolen from elswhere on Shenzhen Wednesday.
 

Offline lem_ix

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #23 on: April 04, 2017, 11:32:33 PM »
If the release version works as advertised this will be great value :-+ Cheaper then decode options on some scopes :palm:
 

Offline Cliff Matthews

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Re: EEVblog #985 - Siglent SDS1202X-E Oscilloscope Teardown
« Reply #24 on: April 05, 2017, 12:49:09 AM »
On that log 2nd HC595 failed.. maybe it's duplicate init code from a 4 channel unit? Could be driving the NEC relay's.
 


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