The DASH2 is able to display lap timing data which has been generated by an external data logger such as a DL1. This is configurated by clicking on the "Set up lap/sector timing" icon in the DASH2 configuration software:
At the end of each sector and lap on the track the lap timing values can be displayed on the DASH2 screen for a pre-set length of time, which is user settable.
The values to be chosen from are:
Does exactly what it says on the tin
The total time up to this point in the lap
The time for the sector which has just been completed
The difference in time between the best lap and the current lap to this point
The difference between the last sector time and the time for that sector on the fastest lap
When predictive lap times option is enabled, the lap time will display as a predicted lap time which assumes that the rest of the lap will be done at the same speed as the fastest lap.