DCma 2D42 firmware 2020070701

pu6k1n · Post time 2021-1-19 18:04:17

I have 2D42. FPGA_V07. Updated STM32 with official firmware from Hantek website 2020070701. Current measurement with a cartoon in DCma mode does not work, does not measure, and the point is shifted 1 digit to the left, and how can it measure a maximum of 200 mA? ((. On request 2020051401 the same thing, DCma mode does not work. I put the firmware back to 2019082801 and everything worked for the cartoon as it should. What should I do?

pu6k1n · Post time 2021-1-28 01:17:46

Edited by pu6k1n at 2021-1-28 01:48

Hello! Maybe this will help you. I upgraded, as you said again, upgraded to version 2021010801, but the problem persists, DCma and ACma modes do not work! I return to the old firmware 2019082801, the DCma and ACma modes are working. I opened the device ((. Looked at the signals on optocouplers in DCma mode with firmware 2021010801, data goes from U4 (CS7721CN) through the TxD U5 (PC817) line! On the U9 (74HC595) chip, DCma mode is set (MEA1 = 0, MEA2 = 1, MEA3 = 1, MEA4 = 1, REL = 1, SELECT = 1, RST = 1), which corresponds to the CS7721CN documentation.For some reason, it can be seen that the firmware does not display data on the LCD in DCma mode. (((((((

pu6k1n · Post time 2021-1-28 02:44:46

Edited by pu6k1n at 2021-1-28 04:02

I will also add. I tried to measure ma in DCma mode in the Hantek2xx2 program. The measured current jumps. Firmware 2021010801

pu6k1n · Post time 2021-1-28 03:58:18

And like this with the firmware 2019082801

pu6k1n · Post time 2021-1-28 15:57:30

Yes, the same!

pu6k1n · Post time 2021-2-17 16:49:05

I confirm! The problem was quickly fixed! Thank! All perfectly!

DCma 2D42 firmware 2020070701

This post contains more resources

This post contains more resources