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Review: Hantek DDS 3X25. Anyone own one?

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Fraser:
My Hantek 1025G arrived today.

It looks as well made as the 4032L logic analyser. Nice PCB quality and pretty good soldering.

I attach pictures below.

The unit uses a Xilinx Spartan chip but the exact part number has been erased. It is interesting that they have erased the chips in this unit but not the 4032L  :-//

They have also not fitted the 5V power socket even though it is catered for on the PCB. There also appears to be capability expansion potential in the design that has not been exploited on my model.


Compare these pictures with those of the 3X25 on Page 5 of this thread. Same schematic ? It looks to be.

The ST chip is clearly identified on my unit and was not erased unlike in the 3X25  :)
Previous postings indicate that the Spartan is a 3AN type.

torch:
I can't believe they got rid of the 5v supply.  :o Not to mention the missing BNC connectors. But then, nothing they have done with this product has made much sense to me. If Hantek's executives had an ounce of brain power, they would have contacted Mechatrommer, offered all the available programming information and make the software open source. They could then just sit back and watch the money roll in as the 3x25 flew off the shelves.

Instead, Hantek seems to have stripped out some of the functionality without increasing any of the capability and bundled it with their old, inferior, software. It's like someone said "Here's a gun, go shoot yourself in the foot" and they said "Ok!"

Fraser:
I have to agree. They have provided the trigger and control line on the header block on the front panel but nowhere near as convenient as the BNC connectors. I believe a modification will be done by me soon  ;)

The 5V socket was a real surprise. The 4032L logic analyser is supposed to be powered by one of those weird double USB leads that takes power from two ports. That was replaced with a single USB lead and a mains power supply by www.rigoloscilloscope.co.uk who supplied it to me.

Now the 1025G is also supposed to have one of the double USB leads supplied with it, but it has come with a standard one and no power supply option due to the lack of the socket. I don't like powering kit off of my Dell laptop USB ports as they are renowned for being fussy on current draw. I shall be fitting the required 5V socket and polyfuse soonest.

As you say, this has been a huge opportunity lost. I will still find the unit very useful for my needs though, thanks to Mechatrommer's software  :) Thanks Mechatrommer !

marmad:

--- Quote from: torch on May 08, 2013, 06:15:59 pm ---I can't believe they got rid of the 5v supply.  :o Not to mention the missing BNC connectors. But then, nothing they have done with this product has made much sense to me.
--- End quote ---

What is so strange is that they failed to write PC software which correctly implements some of the features of the original DDS-3X25 firmware; for example, 'burst' mode for doing single-cycle waveforms and short bursts. This is something I use all the time (via my own software) - but what did they do? Instead of re-writing the software to implement these things correctly, they just eliminate or bury features. It's as if their software programmers said, 'Nope, it just can't be done.'

Fraser:
It is a great pity that the software lets Hantek products down. The hardware looks to have been well thought through, and produced to a good standard. They need to find a new software engineer.

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