I am using CRO to measure area under grap plotted by DAC output from MCU.
Problem is when I put probe on MCU output pin, there is random noise in signal i.e signal is not smooth.
That why I cannot read exact area under curve from MCU.
Earlier I thought noise could be from MCU pin. But I put the probe on GND pin of MCU, same random noise appears on it also.
CRO ground pin is connected to ground pin of MCU.
Problem is when I put probe on MCU output pin, there is random noise in signal i.e signal is not smooth.
That why I cannot read exact area under curve from MCU.
Earlier I thought noise could be from MCU pin. But I put the probe on GND pin of MCU, same random noise appears on it also.
CRO ground pin is connected to ground pin of MCU.