Products > Test Equipment
Hantek 2000 series - 2C42/2C72/2D42/2D72
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tsman:

--- Quote from: ataradov on January 31, 2019, 03:57:20 am ---The processor is STM32 and it is under the can (which is not present on my unit) on the last picture. EDIT: Actually no, the MCU is on the other side of the board with a shield.

 The big chip is a Lattice FPGA.

Also my unit has multimeter chip markings scratched out. No idea why if they already release devices with intact markings.

--- End quote ---
Sorry. I edited out my question as I noticed that wpwrak had already noted what all the parts were.

Strange that they even bothered to grind off the markings on the multimeter chip in the first place. They're not doing anything special with it and it is just a basic 4000 count chip anyway.
ataradov:

--- Quote from: tsman on January 31, 2019, 04:05:10 am ---Strange that they even bothered to grind off the markings on the multimeter chip in the first place. They're not doing anything special with it and it is just a basic 4000 count chip anyway.

--- End quote ---
It looks like may be my hardware is older revision, so they may have thought they will be able to keep it a secret. And then just gave up on newer units.

I'm personally more bothered by overclocking 80 MSPS ADC to 250 MSPS. That's more than 3 times.
tsman:

--- Quote from: ataradov on January 31, 2019, 04:07:45 am ---It looks like may be my hardware is older revision, so they may have thought they will be able to keep it a secret. And then just gave up on newer units.

--- End quote ---
Yeah. There are some changes to the PCB between Microcheap's A09 PCB (2018.11) and wpwrak's A07 PCB (2018). Some parts have moved around and the silkscreen has changed in places.

Comparing the two boards, the AWG feature needs U12 (DAC?) which is near the FPGA and U13 which is near the output. U14 (some kind buck regulator) looks to be needed as well.


--- Quote ---self restoring fuse: 200mA/250V, 4A and 10A range no fuse.
--- End quote ---
Mmm... Best keep this for low voltage stuff then.
Microcheap:

--- Quote from: tsman on January 31, 2019, 04:29:57 am ---Comparing the two boards, the AWG feature needs U12 (DAC?) which is near the FPGA and U13 which is near the output. U14 (some kind buck regulator) looks to be needed as well.

--- End quote ---

I've noticed that. wpwrak's is an older revision an he's model has no AWG. U12 must be a DAC, but I couldn't read its marking. 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.
U13 is a LHM6702MA opamp http://www.ti.com/lit/ds/symlink/lmh6702.pdf there is a BAV99 missing beside U13 too. Everything else looks to be populated, so it should be possible do add the AWG function to the 2Cxx models.


--- Quote ---self restoring fuse: 200mA/250V, 4A and 10A range no fuse.
--- End quote ---
Notice that too :palm: Hey, but at least they reinforced the tracks with solder
tinhead:

--- Quote from: ataradov on January 31, 2019, 04:07:45 am ---I'm personally more bothered by overclocking 80 MSPS ADC to 250 MSPS. That's more than 3 times.

--- End quote ---

actually this ADC have two channels, so you have interleaved 2x125MSPS, which is only 25% (best case, if silicon is same, which probably is the case anyway) when comparing to AD9288-100. On the market, there are DSOs since 10yrs with these ADCs - overclocked to 125MSPS, and they still working. I don't think you will use that small cheap Hantek more than 10 yrs ...
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