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Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see!
fremen67:
There is something strange I forgot to mention regarding the power supply.
As you see on the first page pictures, there are two power supply connectors on the board, one on each extremity. On my HDG there is only one cable coming from the power supply connected to the board (to the DAC part). The other cable providing +5V for the S3c2416 part is not connected but tied to the other cable (so it is like this on purpose and not just only disconnected).
One half of the power supply is almost useless, except that it also provides 12v for the fan... quiet expensive for a fan supply. The S3c2416 part of the board is powered throught the bridge in the middle of the board... It does not look that clean.
Would it mean that Hantek run into design problems and did that as a workaround? What do you think?
Could you also check that on yours?
idpromnut:
Same for mine, but I assumed that this was due to reuse of the same supply for both the DSO and function gen (and perhaps the MSO as well).
fremen67:
--- Quote from: idpromnut on May 23, 2014, 11:27:05 am ---Same for mine, but I assumed that this was due to reuse of the same supply for both the DSO and function gen (and perhaps the MSO as well).
--- End quote ---
No they have completely different designs. This one has to supply +V and -V for AWG functions. They are the same on both DSO and MSO but only supply 3.3V, 5V and 12V (if i remember well)
Plus the pinout of the "unused" cable connector fits the one on the board (GND,GND,5V,5V). This connector is not the same on a MSO/DSO (6 pins).
fremen67:
--- Quote from: FrankenPC on May 23, 2014, 03:28:26 am ---
--- Quote from: idpromnut on May 16, 2014, 12:18:26 am ---Have any of you seen this error message as soon as the HDG2002 starts booting (before the kernel is uncompressed, etc):
*** Warning - bad CRC or NAND, using default environment
As a side effect, I don't think I can save any of my settings (the key beep for instance turns back on after a power cycle).
--- End quote ---
Yeah, I have this error as well.
Did you figure out what's causing it?
--- End quote ---
Don't worry about that.
When starting your HDG, u-boot, the program which loads the system, can't find any valid environment already stored in the NAND memory and so just loads the default one. It's not a problem even if it does not look "clean".
If you really want to get rid of this message, just reboot and stop the boot process with the space key. You will see the u-boot menu. Select "0" (set the boot) and "s" (Save the parameters to Nand Flash) which will, as you can figure it out ... save the default parameters to the NAND. Then q (Return main Menu) and r (Reboot u-boot).
If you don't feel like it, just ignore it ;)
It has nothing to do with the parameters in the utility menu not being saved, which is indeed a bug.
tinhead:
attached some files one might need to play with NAND:
- s3c2416 SoC configs for openjtag (gui or openocd) and h-jtag/h-flasher (hfc file)
- dnw.exe for s3c2416
- windows device driver for HDG uboot.
Note1: afaik while in uboot menu, the USB client port is not active until you chose an function which need USB client port enabled. That means you have to chose an "less dangerous" function from menu while doing it first time, this is necessary to give windows enought time to install drivers. When you at that time select something more tricky, like upload new root fs, you can be sure that uboot will wipe out your NAND befor windows ended the driver installation, so be carefull!
Note2: even if i do have OpenJTAG or and other FTDI based JTAG adapters, but i never using them. This is because i do have H-JTAG USB, so please don't ask me how to use openocd etc.
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