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The 7I76EU inputs have and ~11K input impedance which needs to be accounted for
when driven by a high impedance source (it looks like your source impedance is around 5K Ohms) 

 

Oops sorry, haste makes waste...

Thanks for the firmware file! When I try to flash it with mesaflash, I get the error Invalid bitfile header. It looks like this is a raw Xilinx ISE/Vivado .bit file. Could you please provide the firmware in the proper format for mesaflash (with the MESA header, or as a .bin file for the 7i90)?

Thanks for the firmware file! When I try to flash it with mesaflash, I get the error Invalid bitfile header. It looks like this is a raw Xilinx ISE/Vivado .bit file. Could you please provide the firmware in the proper format for mesaflash (with the MESA header, or as a .bin file for the 7i90)?

Hey guys,
I want to measure the internal temp of my jianken ATC spindle. I have a NTC with a classic voltage divider setup, and at room temperature the V_out of this divider carries 12V. (Measured against GND with a multimeter).

However, as soon as I put this cable into analog_in1 of my Mesa 7i76eu, the voltage drops to 8v, and thous the calculated temperature is garbage...

Any ideas why this is happening? 

regards
Sebastian