If you look at the data I posted yesterday, sensitvity (ADC resolution converted to volts) for each range is included at the bottom. This was meant to complement your ripple measurements with calculated figures. This suggests that 1x from 10mV to 1V is Ok as well as 10x from 0.2V to 1V. In other words we should be able to measure ripple (20mV) on DC levels at 7V or less. Above this, sensitivity is an issue.
[code]Probe Scale Range Max Probe Max
1x 10mV, 20mV, 50Mv, 100mV 0.8 1.18
1x 200mV, 500mV, 1V 8 8.9
1x 2V, 5V, 10V 80 92
10x 0.2V, 0.5V, 1V 10 11.6
10x 2V, 5V, 10V 80 86
10x 20V, 50V, 100V 800 838
Sensitivity is as follows:
288.7uV
2.2mV
22.6mV
2.8mV
21.1mV
204.7mV
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