Hi llmars, I have captured 5 volts and 3.3 volts from our board in scope with our device operating in battery and scope connected in UPS at battery mode. In this above test only connection between our board and scope is only the probe used for measuring but We are still seeing noise as mentioned below. When I turned on the inductive load in 110 volts which is in no connection with my system and scope. Regards, Rajesh K.
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