well yeah, of course, if you care about transients, you may switch to an oscilloscope.
Alternatively have a multiplemeter that records min/max, and/or has a rs-232 interface.
However with enough sampling, even 1Hz frequency should be sufficient.
Oscilloscopes also have a dead-time. If you want to judge the power usage accurately you pretty much have to go to dedicated stuff like https://www.joulescope.com/ althought you might get close enough with using some tricks. Or the ye olde analogue way of integrating the current usage via
Like, if you know your device is on 50ms and off 10 seconds you can just record both states power usage and calculate based on ratio, most scopes memory is probably enough for 50ms with enough resolution and idle power usage will most likely be the same over the period.
> Alternatively have a multiplemeter that records min/max, and/or has a rs-232 interface.
Min/max ain't going to do you much, some WIFI-enabled devices can spike to like 500mA for few us so even if it captures it the max doesn't tell you much.
However with enough sampling, even 1Hz frequency should be sufficient.