Author Topic: Rigol DG4062 (vs. DG2041A)  (Read 5434 times)

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Offline 0xdeadbeefTopic starter

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Rigol DG4062 (vs. DG2041A)
« on: November 26, 2011, 04:33:22 pm »
Is anything known yet about the Rigol DG4062 arbitrary generator? It seems to be superior to the DG2041A in almost every aspect, plus it's 2ch vs 1ch and still it's obviously quite a bit cheaper. The main drawback (and ok, this is a big one) I could find is that its arbitrary memory is reduced to 16k (why, oh why, Rigol?). Or did I overlook something?
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Offline Mechatrommer

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Re: Rigol DG4062 (vs. DG2041A)
« Reply #1 on: November 26, 2011, 04:47:03 pm »
a link to the said devices will help us alot i think. here is the link i found:
http://www.rigolna.com/products/waveform-generators/dg4062/
http://www.rigolna.com/products/waveform-generators/dg2000/dg2041a/
yes its almost superior in every aspect and $200 cheaper. made me sceptic, there must be something else other than the 16Kpts that made it cheaper. what about the max Vpp? its not indicated there. i will not bother to download the 3MB+ spec pdf sorry. please do tell us.
Nature: Evolution and the Illusion of Randomness (Stephen L. Talbott): Its now indisputable that... organisms “expertise” contextualizes its genome, and its nonsense to say that these powers are under the control of the genome being contextualized - Barbara McClintock
 

Offline 0xdeadbeefTopic starter

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Re: Rigol DG4062 (vs. DG2041A)
« Reply #2 on: November 26, 2011, 05:42:26 pm »
Yeah, I downloaded both manuals of course and tried to compare the characteristics, but I didn't really find that big showstopper yet. I.e. the output voltage is identical and the (time) jitter of the DG4000 seems to be a even a little better. The harmonic distortion (sine) is not specified for the DG4000 line below 1MHz, but at 1MHz it's better than the DG2041A. Accuracy over temperature is the same, but only the DG2041A defines an accuracy over time (e.g. one year).

What's indeed a little strange is that the 60MHz DG4062 is limited to 25MHz square waves, while the 40MHz DG2041A reaches 40MHz for the square waves as well (especially taking into account the 500MSa/s vs. 100MSa/s sampling rate). Then again, for ramps, the DG4062 is better (1MHz) than the DG2041A (400kHz)...
Anyway, it's also intereseting that all DG4000 devices (60MHz, 100MHz, 160MHz) seem to share the 500MSa/s sampling rate. So obviously the lower devices are just crippled regarding the selectable waveform frequencies. Well, we kinda know that from the scopes of course.

BTW: on the lowest DG4000 (the DG4062) also the arbitrary frequency is limited to 15MHz. I can't imagine any reason for this apart from crippling the low end device. Anyway, again, the DG2041A is even worse (12MHz).
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Offline Mechatrommer

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Re: Rigol DG4062 (vs. DG2041A)
« Reply #3 on: November 26, 2011, 05:57:05 pm »
So obviously the lower devices are just crippled regarding the selectable waveform frequencies. Well, we kinda know that from the scopes of course.
maybe you can try to buy the low end one (if the high end is too expensive) and see if you can play with ":INFO:SERIAL" usb thingy. anyway i'm happy with my current AWG, so i dont think i'm going to try out the $800 device. good luck.

edit: and thanks to highlight this issue (4000 is cheaper than 2000)
« Last Edit: November 26, 2011, 06:03:52 pm by Mechatrommer »
Nature: Evolution and the Illusion of Randomness (Stephen L. Talbott): Its now indisputable that... organisms “expertise” contextualizes its genome, and its nonsense to say that these powers are under the control of the genome being contextualized - Barbara McClintock
 


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