Products > Test Equipment

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

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Microcheap:
Thanks for the feedback. So the problem was a dodgy DAC? Where did you get it?

aRGee:
From the cheapest seller on Ali....

Microcheap:

--- Quote from: aRGee on November 14, 2019, 05:28:36 am ---From the cheapest seller on Ali....

--- End quote ---
Of course it was, that explain the problem...

By the way, the DAC used originally by Hantek is a 3peak PD5651E it's a 10bit DAC, so Hantek is doing some trick in software to be able to claim the 12bits resolution.

One more thing, if you do the AWG mod you will need to calibrate the amplitude of the waveform, there is no need to play with the resistors values as someone posted some time ago. Just install the FW linked below using Dfuse. Use a coax cable to connect Gen Out to CH1 of the device, go to the AWG and set Sine wave, on the second page of the configuration you will see an option "calibrate", select it and it is done. You can now update to the last firmware again.

aRGee:
Maybe the problem with the first dac was that these ic's are running out of spec? Today I looked at the negative rail of the power supply and solved this problem (like mentioned on page 3 in this threat. This weekend I will follow your instructions. Thanks for your input/help! Regards, Robert.

KONNEX:
can someone summarize the Mod?
Needed Chips / Caps / Resistors with Values to put where.

There is some confusion about some resistors and if needed in certain values and so on.
DAC 10Bit 12Bit and so on...

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