Author Topic: siglent SDG1020 waveform generator teardown pics  (Read 27867 times)

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Offline israel

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siglent SDG1020 waveform generator teardown pics
« on: March 17, 2012, 10:44:38 pm »
Does not seem bad for a cheap Chinese toy, is much like Rigol DG1022.

best regards,


Quote
edit:
pics hosted in the forum (part one)



« Last Edit: March 18, 2012, 12:01:47 am by israel »
 

Offline olsenn

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #1 on: March 17, 2012, 10:53:38 pm »
Not too shabby; I especially like the Spartan-6 FPGA
 

Offline mikeselectricstuff

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #2 on: March 17, 2012, 11:39:13 pm »
Surprised it needs a fan.
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Offline israel

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #3 on: March 18, 2012, 12:01:10 am »
Quote
More pics (part two)

 

Offline Spawn

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #4 on: March 18, 2012, 12:43:54 am »
I don’t know what to like, the good looks or the power supply of it  ::)

The power supply is surprisingly good build, they have separated the mains and each capacitor is secured with silicone kit.

How does it react, is the output clean in low and high settings?

Offline Spawn

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #5 on: March 18, 2012, 03:47:37 am »
I am not sure about that Mechatrommer, I think it also ventilates the PSU, there are holes in the shield between the PSU and the generator PCB, and direct next to the heatsink there is a big hole to cool heatsink in the PSU.

The thing is the fan sucks the air in to the case, I hope they put some filter between the hole in the case and housing, otherwise it will suck everything in the case, from what I could see on the pictures online there is a hole in the housing just before the hole in the case.

Offline Spawn

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #6 on: March 18, 2012, 06:05:14 am »
I am not a design expert when it comes to this kind a things but, I think they have tried that ;) See the 4 small holes around the big hole in the PSU part, those are made to mount a fan there, but a fan never would fit there for sure with the heatsink being in the way.

Offline Teknotronix

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #7 on: March 18, 2012, 07:51:41 am »
How accurate and clean are the waveforms?
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Offline Teknotronix

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #8 on: March 18, 2012, 09:11:55 am »
Because i saw siglent , i decided to compare it and the Atten ATF20B ,
and , THEY ARE THE SAME !

Exact same internals?
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Offline Teknotronix

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #9 on: March 18, 2012, 09:20:15 am »
Externally , not sure about internals though ... But yeah , they look the same outside
I will compare the review of the ATF-20B and this one .

Cool, got a link?
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Offline Teknotronix

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #10 on: March 18, 2012, 09:49:16 am »
Hopefully this siglent turns out to be a better product than the atten. I am on the hunt for a decent low priced DDS function generator.
Don't drone me bro!

 

Offline chrome

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #11 on: March 18, 2012, 12:08:12 pm »
Is the Front USB actually connected to the PCB? (the Atten ATF20B wasn't)
 

Offline israel

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #12 on: March 18, 2012, 01:39:08 pm »
Quote
Is the Front USB actually connected to the PCB? (the Atten ATF20B wasn't)

The front USB port is fully operational and can be saved parameters, waveforms created, update firmware and various functions more.

The rear port is for connecting to a PC and use the software (i do not have this software) and create waveforms. The computer recognizes it as an oscilloscope.



Quote
How does it react, is the output clean in low and high settings?

The output looks very clean on the high and low impedance, I do not have spectrum analyzer to determine parameters of IMD.



I think its price is pretty good. but the chassis seems to be made with a hammer and an anvil.

Attached some pictures of the different waveforms taken with my cheap scope.

sorry for my bad english, not is my native language.

best regards
 

Offline Teknotronix

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #13 on: March 18, 2012, 01:45:01 pm »
Thanks for the images. This one might actually turn out to be a decent low price candidate. Who did you buy from and how much?
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Offline Spawn

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #14 on: March 18, 2012, 02:36:21 pm »
Thanks for the test israel, like Tektronix I am in the market for a good reasonable prized function generator too, and indeed this one looks decent.
At this moment I am in a hunt for a different tool when I got that I will sure look in to this one.

sorry for my bad english, not is my native language.

Ah don’t worry about that, yours is a lot better than mine :)

Offline asmcool

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #15 on: April 17, 2012, 09:31:47 pm »
Hi!

I've owned the SDG1010 for a few weeks now. So far I'd say it's good for the money. Construction seems very sturdy and solid. There are nice rubber feet on all 8 corners that help to keep it in place. Buttons and controls feel solid. Output signals are very crisp and stable on my old analog scope. Does it have laboratory precision and distortion? I doubt it. But it's fine for my needs.

If I had to pick one thing to complain about I'd say that the screen is a bit 'grainy'. No big deal, it's not like I need to watch Blurays on it. If this was an o'scope I might be more concerned. Here are some photos of me having some fun with it:

 

Offline nctnico

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #16 on: April 18, 2012, 05:31:56 pm »
I might want to buy one too. How loud is the noise from the fan?
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline israel

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #17 on: April 18, 2012, 08:23:59 pm »
Quote
I might want to buy one too. How loud is the noise from the fan?


Fan noise is perfectly acceptable. Rather low compared to my Chinese oscilloscope.

The power supply APS30005 ATTEN-3D if have a really noisy fan, it's scary when you turn. but this was resolved very easily with a resistor in series with the fan to reduce their speed.

regards,
 

Offline asmcool

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #18 on: April 19, 2012, 09:32:16 pm »
AM modulation of arbitrary wave..
 

Offline israel

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #19 on: April 20, 2012, 09:42:00 pm »
Quote
AM modulation of arbitrary wave..


If, even in ASK, FSK, FM, PM (internal or external)

I attached the user manual and datasheet


http://siglent.com/en/upload/SDG1000%20User%20Manual_V1.2.pdf

http://www.temtecsa.com.ar/catalog/file/Generadores%20de%20Funciones/SDG1000datasheet.pdf



Regards,
 

Offline Acad12

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #20 on: May 03, 2012, 01:36:18 pm »
As several posts indicate that members have a SDG1020 may I ask for an explanation of how the output amplitude is set. Attempts to find this from the specs and questioning of suppliers have produced little relevant information. Is the required amplitude set digitally on the screen and what is the resolution of the setting? I need to be able to set the amplitude inversely to the frequency i.e. if frequency is increased then amplitude has to be decreased proportionally, so the amplitude resolution (smallest step) controls the frequencies that may be used.
 

Offline asmcool

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #21 on: May 03, 2012, 08:41:09 pm »
>>may I ask for an explanation of how the output amplitude is set. Attempts to find this from the specs and questioning of suppliers have produced little relevant information. Is the required amplitude set digitally on the screen and what is the resolution of the setting?<<

hmm? Yes, you turn a dial, or directly enter numbers using the keypad.  Looks like 1 millivolt step for both amplitude and offset. Minimum amplitude for sine wave is 4 mV. I didn't try other wave forms.
 

Offline Colin

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #22 on: May 16, 2012, 07:34:18 am »
ATTEN find another company to rebrand, the company should be this one
http://www.szmywave.com/categoryen.php?id=33&lang=en

Same case, same specifications(confused of mywave 3000CH and 6000CH), must register to get the datasheet :(


I don't know why ATTEN don't use Siglent this time, maybe Lecroy is the only one.
never too late to learn
 

Offline Teknotronix

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #23 on: May 16, 2012, 07:38:01 am »
The screens in the firmware look nicer than the siglent.

ATTEN find another company to rebrand, the company should be this one
http://www.szmywave.com/categoryen.php?id=33&lang=en

Same case, same specifications(confused of mywave 3000CH and 6000CH), must register to get the datasheet :(


I don't know why ATTEN don't use Siglent this time, maybe Lecroy is the only one.
Don't drone me bro!

 

Offline Bored@Work

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Re: siglent SDG1020 waveform generator teardown pics
« Reply #24 on: May 16, 2012, 10:48:14 am »
It is not necessarily Atten who founded that new company. Atten is one of those companies that does everything for money. If you show up at Atten with a bunch of cash, order a large batch of some instrument, and ask Atten to stick another label/name/brand onto it then Atten happily does it. If you ask them to do minor modifications, e.g. substitute parts, they happily do that, too. Atten stuff regularly shows up on eBay and other commercial outlets under other brand names.

Atten has absolutely no interest in upholding their own brands. With their lack of quality it is maybe a good idea to not think about long-term brand establishment.
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