| Products > Test Equipment |
| Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see! |
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| markone:
Having lost any hope to obtain anything else than a simple fixed frequency tone from this toy, finally i went for a Siglent SDG2042X and useless to say (as i was well aware) it's a complete different story. Now i think that compared with almost anything else on the market the HDG2002B is quite a rip-off also for it's price, the current FW is an insulting joke at a point that's hard to believe. @ my job making something similar with products delivey would result in an instant dismissal. I bought it believing in Hantek FW fix and/or open source project goals, as far as i know, both failed. Apart from the money spent, a huge time loss, sure last Hantek deal for me (and it was only the second one in my life). |
| arksie:
Hello Someone from colleagues could send back the original file system.inf? Regards |
| TurboTom:
--- Quote from: robert_ on November 27, 2015, 11:25:08 pm ---Finally got around to finish my HDG2k "improvement" project: Now with a safe PSU, isolation between output common and ground/USB and less loud, more effective cooling. If there is any sort of interest, i could be motivated to publish the psu design files (not that great, as it was built around components i had around) and some infos on the isolation mod. --- End quote --- Robert - could you please specify the type of digital isolators you used for linking between control and signal section of the HDG? I expeimented with a similar configuration as you reported and used two ADuM2400CRW but didn't get the link to work. A closer look at the footprints suggests that the aformentioned digital isolator will work for U14. But U13 might be a different thing since Ve1 is connected to the 3.3V rail which might imply that it has at least one data line in reverse direction. Another look at U14 and the way channel "D" is left unconnected may indicate that both isolators are supposed to be ADuM2401CRW (3F+1R channel arrangement). How did you get your digital isolation barrier to work? Thanks, Thomas |
| Freedom:
Modding HDG2022B I have this model with PCB 1004.1, SW 1.00.3.03.05 (150807.0), Kernel 3.2.35, FPGA 41, Key 3. I'm trying to mod it using USB-UART connection. When I type /config/root/system.inf I got "Permission denied"( see attach). I try su and sudo to overcome permission but the same. Any help highly appreciate |
| CustomEngineerer:
--- Quote from: Freedom on February 07, 2016, 08:45:42 pm ---Modding HDG2022B I have this model with PCB 1004.1, SW 1.00.3.03.05 (150807.0), Kernel 3.2.35, FPGA 41, Key 3. I'm trying to mod it using USB-UART connection. When I type /config/root/system.inf I got "Permission denied"( see attach). I try su and sudo to overcome permission but the same. Any help highly appreciate --- End quote --- I haven't read enough of this thread to know what you are trying to do, but "/config/root/system.inf" is not a command or executable, its just a file. If you are trying to edit the file or read it you could try "vi /config/root/system.inf" or maybe "nano /config/root/system.inf". If you still get permission denied messages try either command preceded with sudo. Edit: Just noticed you are already root, which you can tell by the "root@hantek" part of the command line, so sudo or su won't do anything for you. |
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