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Hantek 2000 series - 2C42/2C72/2D42/2D72
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tsman:

--- Quote from: Microcheap on January 31, 2019, 05:00:19 am ---I've noticed that. wpwrak's is a newer revision an he's model has no AWG.
--- End quote ---
You've got the newer version.


--- Quote from: Microcheap on January 31, 2019, 05:00:19 am ---I forgot to check the markings on U14 and U15 as well (there is one for each battery) I will try to take some higher resolution pictures later and see if I can identify them.
--- End quote ---
Maybe +/- supplies for that opamp? I can't find U15 at all on wpwrak's photos.


--- Quote from: Microcheap on January 31, 2019, 05:00:19 am ---Everything else looks to be populated, so it should be possible do add the AWG function to the 2Cxx models.
--- End quote ---
Maybe. Not sure how it determines your model though. Either something in flash or a pin strap somewhere? The firmware mentions "This model has no AWG" a couple times.

Looking at the firmware update file, it is just a ST DfuSe file. It contains a single image that is loaded at 0x80005000. Only 170KB out of the 512KB available in the STM32F103VET6. Start of the image has the interrupt vector table. Should be able to feed the firmware image into something like IDA once the DfuSe prefix/suffix have been removed.
ataradov:

--- Quote from: tsman on January 31, 2019, 02:30:49 pm ---Maybe. Not sure how it determines your model though. Either something in flash or a pin strap somewhere? The firmware mentions "This model has no AWG" a couple times.

--- End quote ---
No, it must be something specifically for the batteries. On the older boards those chips are not present and the batteries are simply connected in parallel.

The power supply section is on the top right of the battery compartment. There are 3.3v and +/-5V supplies.
tsman:

--- Quote from: ataradov on January 31, 2019, 03:26:32 pm ---No, it must be something specifically for the batteries. On the older boards those chips are not present and the batteries are simply connected in parallel.

--- End quote ---
Yeah. That makes more sense. There is unpopulated U15 next to the +5V PSU on the older A07 board. That disappeared on the A09 board though with U14 and U15 appearing next to the two batteries. No inductor so its not the same as the U15 on the A07.
Stevie1966:
Hantek overclocked the ADC. Will there be a problem when the temperature is high? >:( >:(

Hantek's technical support said that they will offer new software for XY functionality 2 months later.
AxGxP:
Is it official info?
I asked few questions on eediscuss.com but the support is silent...

Any body measured more then 400V in DMM mode?

Drop voltage in diode mode 0.999 V max, is it a hardware limit?
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