Pabandyk taip.
On the measuring blocks screen select which measuring block to view. I used Group 001. At the bottom of the screen enter your desired log filename. Hit START. Start the car. Hit STOP. Now you've got a log file of RPMs during the start (plus some other data you don't need).
If you don't use the graphing program you get a raw CSV log file like this. Harder to read, but you can see in the 2nd field over the RPMS going from 0 to 126 to 147 and then to 903.