Will the Digitech QC-1929 (AKA Hantech 6022BE) work for my needs?

[aberrant]

I have a small pendulum driven DC generator project and I need to either record the output waveforms or log the raw data from the generator output (ideally both).

The image below shows the kind of output I'm expecting based on the speed of the pendulum swing at steady state.

Can this device measure both current and voltage simultaneously?
Does it only display what's going on at a moment or can I read back previous measurements?

I'm a new to using these kinds of instruments so please forgive my ignorance. I'm looking at this instrument specifically because it's not too expensive and available locally.

Thanks

EDIT: While the image only shows ~5seconds I would plan on logging the output over a period of 1 to 3 minutes during which time I expect there to be intermittent periods of zero output.

Link to hardware
https://www.jaycar.com.au/20mhz-usb-oscilloscope/p/QC1929

Link to manual
https://www.jaycar.com.au/medias/sys_master/images/9126754844702/QC1929-manualMain.pdf