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Review: Hantek DDS 3X25. Anyone own one?

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marmad:
Thanks so much for your feedback, saturation!


--- Quote ---The Hantek is disappearing, so get it while you can.  Last I checked gone are vendors from EU, America, and what was 2-3 pages of product listing is down to just 3 sellers, all now in China.
--- End quote ---

Yes, it appears it is... although I can still find one or two here in Europe.


--- Quote ---Last I checked, ArbExpress 2.5 doesn't work; the reason is for a time Tek changed the arb file format many times but they didn't change the file extension.  So what format it really is remains unknown, and whether it will work on 2.6 ArbExpress is unknown too.  Its easier to use the CSV format.
--- End quote ---

Yes, I meant using the CSV format from ArbExpress (will edit the above message).


--- Quote ---For practical electronic use, the Hantek is far more capable, but it has its blemishes, fixing it is what hacking is all about 
--- End quote ---

Your message has finally tipped me towards the Hantek -  I do love to hack around with things  :)  Now I'm just waiting to hear from a vendor here in the EU if they will ship it excl. VAT - which would make it just a few bucks more than the Chinese dealers on eBay.

@Mechatrommer


--- Quote --- DDSSetSingleWave is the most painfull function to call, i dont know what it does, its just stop the device from outputting data (which i was expecting it to output a "one time/once" data from the name.
--- End quote ---

Yes, it certainly seems from the manual that it should be used for single-shot waveforms.


--- Quote --- repeatedly calling DDSSetFrequency and DDSDownload,
--- End quote ---

I guess there's not much more to work with than those two functions for wave generation.  One question, can you poll DDSCheck to see if the device has finished the last command?  I've been trying to make a more understandable list of the functions (see attached .docx).  Feel free to check it and correct me if I've got something wrong.

In any case, as you might have read above, I've decided to buy one myself, so I can help you with the software experimentation on it.  Maybe we can reverse engineer it  ;)

Mechatrommer:
your doc looks like description from manual, cant go wrong i think. there's no polling, you wait until the api function returns and thats it. completed or not, is not accesible from your software, thats the mercy of the driver and hardware/firmware implementation. different seller will try to add different flavour in their ads, you probably looking at the same item in your example above. i also cannot download ArbExpress, dont know why the site keep hanging. i'm looking forward to listen to your idea/comment when you get your 3x25. cheers.

marmad:

--- Quote ---completed or not, is not accesible from your software, thats the mercy of the driver and hardware/firmware implementation.
--- End quote ---

That's too bad - but I'll just have to make do with what's available.


--- Quote --- i also cannot download ArbExpress,
--- End quote ---

I pm'ed you some other links to try - maybe it works from there.


--- Quote ---i'm looking forward to listen to your idea/comment when you get your 3x25.
--- End quote ---

I'll let you know when I've got it warmed up  :)

saturation:
I hope you get one marmad, and share your new developments with us.  If you are in school and have access to a good spectrum analyzer, I'd be curious to see how clean the sine waves are to 2 MHz, compared to the Velleman.  See the link I posted earlier about the tests on the Velleman forum.

marmad:
@saturation

Sorry, I'm not in school - and I don't have access to any better analog testing equipment than you - having just replaced my 30 year old Tektronix analog scope (which finally stopped working) with the DS1052E.  But I was thinking of cracking it open and having a look inside for possible mods.

And I'm more than happy to share any software and source I write for the device.  Hopefully I can contribute to Mecha's work.

Mark

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