| General > General Technical Chat |
| Review: Hantek DDS 3X25. Anyone own one? |
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| saturation:
You still need the applause mecha, as you've substantially improved the functionality of this device! Yes, I did notice the other improvements, but leave those comments for later. The core problem of dajones, you've addressed very well. Even if the phase starts shifting, its consistent, so you can still use the sync signal output for triggering. More later but what I would love to see fixed are: 1. Sweep function: the factory software only allows sweeping to 100kHz. Its a shame since it can go to 100 MHz. I'd like to see it capable of sweeping from 0 Hz to maximum Hz supported, as a single sweep. You can even run this through the client software so it goes from X-Hz to Y-Hz in Z-Hz increment with a delay from milliseconds to seconds. That would be fantastic! 2. amplitude and frequency modulation: similarly limited in maximum frequency. If you can allow it to use any modulation frequency and a carrier up to the maximum supported frequency, that would be great. As far as any artifacts this creates, I think the user should manage any DDS generated artifacts from modulation. |
| Mechatrommer:
1) 0Hz is impossible in hardware. a pc software dirty trick (processing power) is needed for this. 2) what do you mean "client software"? 3) modulation: there is limit to carrier frequency depending on signal frequency. will study more on this. 4) will keep the suggestion for the next upgrade ;) |
| saturation:
0 Hz ???! Of course, what I meant was support as low as supported by the device. The 'client' is the software on the PC use to control the Hantek No rush, do what you feel in good time. Sweeping function, if that is easier to do, would be a more important concern as AM or FM modulation is less used today except for radio. --- Quote from: Mechatrommer on April 08, 2011, 05:59:49 pm ---1) 0Hz is impossible in hardware. a pc software dirty trick (processing power) is needed for this. 2) what do you mean "client software"? 3) modulation: there is limit to carrier frequency depending on signal frequency. will study more on this. 4) will keep the suggestion for the next upgrade ;) --- End quote --- |
| Mechatrommer:
--- Quote from: saturation on April 08, 2011, 07:04:07 pm ---0 Hz ???! Of course, what I meant was support as low as supported by the device. --- Quote from: Mechatrommer on April 08, 2011, 05:59:49 pm ---1) 0Hz is impossible in hardware. a pc software dirty trick (processing power) is needed for this. --- End quote --- --- End quote --- sorry i mean 0 < Hz < 0.5, 0Hz is actually super easy. for the sweeping, i have a dilemma since i got this thing. signal transition, seems not so smooth, there is signal overlap (eg. transiting from sine to triangle, or sine changing frequency etc) but it was rough observation, and its hard to get the capture on screen. i will look more closely next time. |
| Mechatrommer:
ok, i've done with sweep function (f,v,offset capable) for primitive signals (hantek.zip). i believe its far more superior than the bundled software 8) you are free to download and use it, except you cannot make a bomb with it! :P |
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