General > General Technical Chat
Review: Hantek DDS 3X25. Anyone own one?
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clonecrp:
Nice .... :D ... I need to play with this some more !

Doug
clonecrp:
Mechatrommer:

Is atattched more or less what you mean ...  :-\

Doug ...
Mechatrommer:

--- Quote from: clonecrp on April 23, 2011, 02:42:53 pm ---Mechatrommer:
Is atattched more or less what you mean ...  :-\
Doug ...

--- End quote ---
exactly what we need. great job! i've changed the doc a bit, made a help button in the little software to automatically open it. i think i got last minute change during the prior version (calibration process only doing sine iirc), so i fixed and checked before attaching it (latest version) here. you may want to overwrite your existing *.exe (and add the readme.docx made by Doug) in the zip file. i also included the source that i've change. Cheers ;)
clonecrp:
Mechatrommer:

A couple of corrections that might be of interest ....

Doug
seattle:
Hi, has anyone looked to see if the amplitude adjustment on the 3x25 is done via an analog gain stage, or if it's done via limiting steps in the output DAC? It seems like the noise floor comes up quite a bit as the output amplitude is reduced. On a 2Vpp sine at 500KHz, the noise floor down quite a ways in the audio region (at the limits of the 10-bit scope ADC), but as the 3x25 output is reduced to 40 mVpp, the noise appears to come up quite a bit (though I'm at the limits of the scope there it looks like).

Overall, however, 3x25 is a great deal and I'm really glad I found this thread. PS. Has anyone seen some USB flakiness? It can be fixed by unplugging and replugging. Just wondering if it's my machine or others have seen this.
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