To guarantee battery operation for a long time ( eg up to 5 years ), designers of wireless battery operated devices need to know the power consumption of the device in all operating stages.

The new Keithley Graphical Sampling DMM6500 and DMM7510 can measure current levels from from hundreds of nanoamps to amps, can capture short current bursts/spikes, and can store a full current profile in their large memory buffer.

See an example on this video:  https://www.youtube.com/watch?v=8acJocUuMQo, download the application note at: https://download.tek.com/document/1KW-61357-0_DMM6500_Datalogging_Application_Note_080318.pdf or visit the C.N. Rood booth