Lap Timing On VIDEO4

Lap timing is one of the most important parameters for every racer. To get the lap timing working on VIDEO4, unit must be connected to a Race Technology DL1 or DL2 data logger. When using the DL1/2 and VIDEO4 together, then the DL1/2 simply acts as a source of data for the VIDEO4 - there is no need to access it during normal operation. The DL1/2 doesn’t even need a CF card to be inserted, it just needs to be powered and connected to the VIDEO4 with the supplied serial lead. In this configuration the VIDEO4 does all lap timing.

Lap timing functions use GPS coordinates as track markers to define sectors and laps. These markers can be added either by setting up a button on the DASH2 or DASH3 to add a marker, or by adding them to data using the Race Technology Analysis Software and saving the resulting .LAP file to the compact flash card for transfer to the VIDEO4.

Lap timing operation will start automatically when you pass a track marker for the first time with the data logger on, with GPS lock and logging data. After this, when you complete each sector data logger outputs a time and VIDEO4 updates the lap timing variables discussed in the following section.

Using the VIDEO4 Configuration tool, these variables can be then assigned to the controls on the graphics overlay that the VIDEO4 system adds to its video recordings.

Lap Timing Variables

best sector time

This is the best sector time that has been achieved for the sector that was last completed. This is updated as each sector is completed (as each sector marker is passed).

Best lap time

This is the best lap time that has been achieved. This is updated each time that lap is completed (as the lap marker is passed).

Predictive current lap time 1

This is an estimate of the final lap time, and is calculated using the actual times from the sectors that have already been completed and assuming that all the remaining sectors are completed in the same time that it took you during your best lap. This is updated as each sector is completed (as each sector marker is passed).

Predictive current lap time 2

This is an estimate of the final lap time, and is calculated using the actual times from the sectors that have already been completed and assuming that all the remaining sectors are completed in the best times achieved for each individual sector. This is updated as each sector is completed (as each sector marker is passed).

Number of the current lap

This is the lap number that you are currently on, this starts at 0 and is incremented by 1 every time the lap marker is passed.

Number of the current sector

This is reset to 1 when the lap marker is passes and is incremented by 1 every time a track marker is passed.

Best sector delta

This is the difference between the time that has just been achieved for the sector and the previous best time for that sector. This is updated as each sector is completed (as each sector marker is passed).

Best lap delta

The best lap delta is the difference between the current lap time, and the lap time from the best lap at the same point. This is updated as each sector is completed (as each sector marker is passed).

Last Lap time

Last lap time is simply the time for the last lap to be completed . This is updated each time that lap is completed (as the lap marker is passed).

Last Sector time

Last sector time is the time taken to complete the last sector. This is updated as each sector is completed (as each sector marker is passed).

Current lap time

This is the time up to the last sector on the lap, also sometimes referred to as a “split time” for the lap. This is updated as each sector is completed (as each sector marker is passed).

GeneralOperation / LapTimingOnVIDEO4

Lap Timing On VIDEO4

Lap Timing Variables