Yamaha DTX-PRO Owner's Manual page 60

Basic Guide
Details on Training Types
10. FAST BLAST
Fast Blast is an exercise for building up the stamina needed for drumming. Strike the pads as many times as possible
within a time limit.
Strike the pads as many times as possible within the time limit.
The timer starts counting when you start striking the pads.
The result appears on the screen.
To see the count for each pad, press the button shown below "
56 DTX-PRO Owner's Manual
Timer (min: sec)
Best score (times)
Remaining time
Counter
" ([F2]).