I need a low cost oscilloscope to track and register signals of very low Voltage (i.e mV).
When I see low cost ADC 40/42 with a range of +-5V what does it means ? I can use Pico SW to zoom to mV range or HW can't detect small variations ?
For example, ADC 100 offers +-50 mV sensitivity: which models allows mV ?
Second question: how is connection to mV source (two poles) ? What can I use to detect mV ? There is no interference with PC ?
Many thanks !
Have a nice day