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Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see!

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andrija:
That's too bad. I am aware of the mermad's utility and was wanting to write my own so that I can control all the instruments and set up a testing chain, e.g. test transient response of a DIY power supply or something like that which would involve setting power supply to do a pulse and the scope to trigger on it. I managed to communicate to 2702A and the DP832 and was hoping this Hantek was a cheap alternative to Rigol 4602 since I don't need uber-MHz and that thing is a cool $1k all in. But I guess you get what you pay for :).

Oh, and good job on making a website to keep all info in one place. Forums S/N ratio usually gets so bad that you can't figure out anything. Appreciated :).

idpromnut:

--- Quote from: andrija on October 28, 2014, 07:00:07 pm ---That's too bad. I am aware of the mermad's utility and was wanting to write my own so that I can control all the instruments and set up a testing chain, e.g. test transient response of a DIY power supply or something like that which would involve setting power supply to do a pulse and the scope to trigger on it. I managed to communicate to 2702A and the DP832 and was hoping this Hantek was a cheap alternative to Rigol 4602 since I don't need uber-MHz and that thing is a cool $1k all in. But I guess you get what you pay for :).

--- End quote ---

We shall see, but hoping you will be able to get more than you paid for, if we can get an open-source firmware up and running for this device.

alex.forencich:

--- Quote from: andrija on October 28, 2014, 07:00:07 pm ---That's too bad. I am aware of the mermad's utility and was wanting to write my own so that I can control all the instruments and set up a testing chain, e.g. test transient response of a DIY power supply or something like that which would involve setting power supply to do a pulse and the scope to trigger on it. I managed to communicate to 2702A and the DP832 and was hoping this Hantek was a cheap alternative to Rigol 4602 since I don't need uber-MHz and that thing is a cool $1k all in. But I guess you get what you pay for :).

--- End quote ---

Might not be a bad idea to try to piggyback on an existing project instead of starting from scratch.  There are some open source cross platform instrument control suites available that might be worth looking at.  For example, Python IVI, which supports the DP832 out of the box.  I would add support for the HDG2000, but mine is in pieces right now so I can work on the FPGA and frontend. 

fremen67:

--- Quote from: Cyber7 on October 22, 2014, 07:39:17 am ---The firmware partitions for 1.00.2 are not the same as 1.00.1. They added a recovery partition. I updated the nanddump script for the new geometry, and succeeded with dum pin mtd0 to mtd8.
--- End quote ---
I upgraded today my HDG from FW 1.00.1 to 1.00.2. thanks to Cyber7 and Flatlander backups. The process is not straightforward:
- The new 1.00.2 u-boot is supposed to allow ubi partition restoring via usb or Tftp ... but it's not working a the moment.
- Restoring ubi partitions directly from nand dumps via JTAG (I used H-Flasher //) is very hazardous due to the bad blocks layout beeing specific to each HDG nand. Luckily enough, the mtd8 restore partition backup from Cyber7 had no bad blocks and the corresponding set of blocks on my nand neither so I could easily restore it. My rootfs partitions have bad blocks so I could not restore it directly from a nandbackup from another HDG...Luckily enough, the recovery process of the FW 1.00.2 seems to work.
The problem I have now is that the relays are not powered any more. All the menus seem to be functionnal but I don't have any output on CH1 nor CH2...no clicks... no signal.
My PCB is rev 1002, the new HDG have now PCB1004. Maybe this could explain the problem. Any idea?

I also realized that backup scripts were excluding badblocks from the dumps and I could not use Fatlander recovery partition backup which has 2 badblocks. I modified the scripts to include them as we need the dumps and the partitions to have exactly the same size.

andrija:
My PCB version is also 1002 and I just received it on Monday. Software 1.00.1, FPGA 11 and keyboard 1, linux 3.2.35. Mine is the 2022B model though. Looks like it came from an old stock then.

And... as I said the unit wouldn't turn on when I received it. It turned off again and there's no voltage going to the board (but yes to the fan and the unused 5V header). There is also faint clicking once a second that appears to be oscillator trying to turn on but failing; my voltage detector lights up in sync with that sound every second at the big transformer. No idea what could be wrong and I'm no fan of debugging a mains switching power supply. Sigh. Might have to buy a third party supply and try to attach it in the box. Any idea how much power is needed on 17.5V and 5V rails?

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