General > General Technical Chat
Review: Hantek DDS 3X25. Anyone own one?
torch:
Geez, over a year since anyone has discussed this little guy. Well hopefully someone is still familiar with it.
Does anyone know the required parameters for the external trigger input? Voltage, waveform, frequency limitations? I thought maybe I could use this as a time mark generator by triggering a pulse from an OCXO sine wave, but I just get a flat line from the output. If I disconnect the bnc cable, it reverts to internal triggering. Thinking that 10MHz might be too fast, I tried a 500Hz sine from a tone generator with similar results. When I tried a 10Hz square wave from a 555 timer, I see a brief flat line then the internally triggered waveform each time I click the "External Trigger" button. I've tried voltages from 250mV to 12V.
Any suggestions?
ElektroQuark:
Anyone has one of those working under Linux?
Sigrok has had it in "Planned support" for some years now.
Skyguard:
hello. a query.
my Hantek has a defect. It is not possible to put an exact number.
If I put for example 4000000 with the keyboard in the program, the generator outputs 4000475.
So if I put 3999525 it doesn't put 4000000 either.
It's like it was running about 500 cycles but it also had 260 hertz steps or something like that and then it would never be on frequency.
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