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Display Modes

Updated on May 13, 2026

When the LapTimer unit is logging, you will see a small, white scrolling bar move back and forth across the bottom of the screen (except in Predictive Lap Timing mode).

When using the Speed Display mode, you can start and stop the data logging by pressing the OK button.

VBOX LapTimer using Speed Display mode with the small, white scrolling bar shown at the bottom of the screen.

When the LapTimer unit is logging, you will see a small, white scrolling bar move back and forth across the bottom of the screen (except in Predictive Lap Timing mode).

When using the Speed Display mode, you can start and stop the data logging by pressing the OK button.

VBOX LapTimer using Speed Display mode with the small, white scrolling bar shown at the bottom of the screen.


The LapTimers have many different display modes you can use to view the data. Use the up and down buttons on the unit to cycle through the available display modes.

You can show or hide display mode types in the available display modes via the Display Modes Menu.

The following display modes are available.


Before using this mode, you need to have a set start/finish line. Make sure that you have selected a track layout through the main menu or set a start line manually.

Before you cross the start/finish line for the first time, the screen will show Waiting for start line and the distance from your current location to it.

When you first cross the line and during the first lap, the LapTimer will create a reference lap.

The second time you cross the start line, the LapTimer will start predicting the time.

VBOX LapTimer showing Predictive Lap Timing Mode with current lap time more than 5 seconds slower than the reference lap, indicated by 3 red LEDs and the time value.

Before using this mode, you need to have a set start/finish line. Make sure that you have selected a track layout through the main menu or set a start line manually.

Before you cross the start/finish line for the first time, the screen will show Waiting for start line and the distance from your current location to it.

When you first cross the line and during the first lap, the LapTimer will create a reference lap.

The second time you cross the start line, the LapTimer will start predicting the time.

VBOX LapTimer showing Predictive Lap Timing Mode with current lap time more than 5 seconds slower than the reference lap, indicated by 3 red LEDs and the time value.

The reference lap will be replaced with any subsequent quicker lap time. However, you can fix a reference lap to prevent faster lap times from replacing it.  

Fix the reference lap time by pressing the OK button at any time during your lap. Pressing the OK button will either fix the lap you are currently driving or fix a lap saved in the memory. You can choose which one your LapTimer will use under Fixed Lap Mode in the Predictive Lap Timing Settings

If you power-cycle the unit, clear the lap timing data or reset the start/finish, the fixed reference lap will be removed. If you wish to retain a fixed reference lap, make sure that the lap is saved to the SD card. You can then load it into the device when you need it.

VBOX LapTimer showing "Predictive Lap Timing - Press 'OK' to fix comparison lap" screen.

The reference lap will be replaced with any subsequent quicker lap time. However, you can fix a reference lap to prevent faster lap times from replacing it.  

Fix the reference lap time by pressing the OK button at any time during your lap. Pressing the OK button will either fix the lap you are currently driving or fix a lap saved in the memory. You can choose which one your LapTimer will use under Fixed Lap Mode in the Predictive Lap Timing Settings

If you power-cycle the unit, clear the lap timing data or reset the start/finish, the fixed reference lap will be removed. If you wish to retain a fixed reference lap, make sure that the lap is saved to the SD card. You can then load it into the device when you need it.

VBOX LapTimer showing "Predictive Lap Timing - Press 'OK' to fix comparison lap" screen.

If you need to delete the reference lap stored on your LapTimer unit, you can do this while displaying the Predictive Lap Timing Mode.

Press and hold the OK button for 4 seconds to make the unit clear the stored reference lap and all lap timing data. 

This feature allows you to save a reference lap for future use. 

Insert an SD card into the VBOX LapTimer and use the Save Ref. Lap to SD Card option.
Menu Predictive Lap Timing Menu Save Ref. Lap To SD Card OK

You can read more about saving reference laps in the information about the Predictive Lap Timing Menu.

VBOX LapTimer showing the Predictive Lap Timing Menu with the Save Ref. Lap to SD Card option selected.

This feature allows you to save a reference lap for future use. 

Insert an SD card into the VBOX LapTimer and use the Save Ref. Lap to SD Card option.
Menu Predictive Lap Timing Menu Save Ref. Lap To SD Card OK

You can read more about saving reference laps in the information about the Predictive Lap Timing Menu.

VBOX LapTimer showing the Predictive Lap Timing Menu with the Save Ref. Lap to SD Card option selected.

To load a reference lap file stored from a previous session, copy the required file to an SD card and load the card into the VBOX LapTimer.

Menu Predictive Lap Timing Menu Load Ref. Lap From SD Card OK

The file can have any name, however, it must be:

  • saved in the Data folder on the SD card
  • the only .REF file present in the Data folder

You can use the Circuit Tools software to create a reference lap. Refer to the 'How to Create a Reference Lap Using Circuit Tools' article for more information.

VBOX LapTimer showing the Predictive Lap Timing Menu with the Load Ref. Lap From SD Card option selected.

To load a reference lap file stored from a previous session, copy the required file to an SD card and load the card into the VBOX LapTimer.

Menu Predictive Lap Timing Menu Load Ref. Lap From SD Card OK

The file can have any name, however, it must be:

  • saved in the Data folder on the SD card
  • the only .REF file present in the Data folder

You can use the Circuit Tools software to create a reference lap. Refer to the 'How to Create a Reference Lap Using Circuit Tools' article for more information.

VBOX LapTimer showing the Predictive Lap Timing Menu with the Load Ref. Lap From SD Card option selected.

The default predictive lap timing display shows a continuously updated time difference with the +/- to the reference lap.

When a lap is completed, it will give a final lap time and total time difference to the reference lap. If you achieve a faster time than the reference, the time difference will be negative. 

You can also enable a Delta T bar graph in the settings and select the time shown on the bar graph ( 2, 5, 10 or 30 seconds). 

VBOX LapTimer showing the default Predictive Lap Timing display.
Default Predictive Lap Timing Display
VBOX LapTimer showing the Predictive Lap Timing display with the Delta-T bar graph enabled.
Predictive Lap Timing Display with Delta-T Bar Graph
VBOX LapTimer showing the default Predictive Lap Timing display.
Default Predictive Lap Timing Display
VBOX LapTimer showing the Predictive Lap Timing display with the Delta-T bar graph enabled.
Predictive Lap Timing Display with Delta-T Bar Graph


All lap times and split times are interpolated to 0.01-second resolution.

In this mode, the screen can display either a live rolling lap time or a static last lap time and the lap count. You can change this in the Lap Timing Menu

VBOX LapTimer showing the Predictive Lap Timing mode with Live Rolling Lap Time displayed.

In this mode, the screen can display either a live rolling lap time or a static last lap time and the lap count. You can change this in the Lap Timing Menu

VBOX LapTimer showing the Predictive Lap Timing mode with Live Rolling Lap Time displayed.

The difference between the new lap time and the best lap time will be shown with a + or – sign. A ‘–’ is shown when a faster than best is achieved and a ‘+’ is shown for a slower than best.

VBOX LapTimer showing the Predictive Lap Timing mode with the Fastest Lap screen displayed.

The difference between the new lap time and the best lap time will be shown with a + or – sign. A ‘–’ is shown when a faster than best is achieved and a ‘+’ is shown for a slower than best.

VBOX LapTimer showing the Predictive Lap Timing mode with the Fastest Lap screen displayed.

If you have set up split line in the Lap Timing menu, the LapTimer will display split times for 2-20 seconds when you cross the split line.

Go to MenuLap Timing MenuSplit Time Display Period to set this up.

You can also set a new start/finish line while using the Lap Timing screen by pressing the OK button. If you do this by mistake, you can cancel the action by pressing the Down button within 5 seconds.

If you also require split lines or a separate finish, use the ‘set start and splits’ option in the Lap Timing Menu.

When you set a new start/finish line, the unit will immediately start lap timing from where the new start line was set.

If you cancel the setting of the new start/finish line, the LapTimer will retain the position of the old start/finish line and continue timing from that. 


In Speed mode, the screen will display a large clear speed value with up to 2 decimal places. You can set the speed to display in kph, mph or knots. You can adjust the number of decimal places displayed.

You can change the speed units and decimal spaces used to display the speed in the Speed Menu.

Press the OK button when displaying Speed mode to start/stop the data logging.

VBOX LapTimer showing the Speed display.

In Speed mode, the screen will display a large clear speed value with up to 2 decimal places. You can set the speed to display in kph, mph or knots. You can adjust the number of decimal places displayed.

You can change the speed units and decimal spaces used to display the speed in the Speed Menu.

Press the OK button when displaying Speed mode to start/stop the data logging.

VBOX LapTimer showing the Speed display.


In max speed mode, the screen will show the highest achieved speed value to 0, 1 or 2 decimal places.

Press the OK button when displaying Max Speed mode to reset the displayed maximum speed value.

VBOX LapTimer showing the Max Speed display.

In max speed mode, the screen will show the highest achieved speed value to 0, 1 or 2 decimal places.

Press the OK button when displaying Max Speed mode to reset the displayed maximum speed value.

VBOX LapTimer showing the Max Speed display.


The lap count screen will display 2 counters. On the left-hand side of the screen, you can see the total lap count – this counter can only be reset by restarting (power-cycling) the LapTimer.

On the right-hand side of the screen, you can see the current laps – reset this counter by removing the SD card from the LapTimer unit.

VBOX LapTimer showing the Lap Counter display.

The lap count screen will display 2 counters. On the left-hand side of the screen, you can see the total lap count – this counter can only be reset by restarting (power-cycling) the LapTimer.

On the right-hand side of the screen, you can see the current laps – reset this counter by removing the SD card from the LapTimer unit.

VBOX LapTimer showing the Lap Counter display.


This screen displays the current longitudinal g in the vehicle as a live display as well as the maximum longitudinal g reached. This helps the driver push the vehicle that little bit harder when braking.

Press the OK button when displaying the Longitudinal G mode to reset the displayed maximum g value (Peak g).

VBOX LapTimer showing the Longitudinal G display.

This screen displays the current longitudinal g in the vehicle as a live display as well as the maximum longitudinal g reached. This helps the driver push the vehicle that little bit harder when braking.

Press the OK button when displaying the Longitudinal G mode to reset the displayed maximum g value (Peak g).

VBOX LapTimer showing the Longitudinal G display.


This screen displays the current lateral g in the vehicle as a live display as well as the maximum lateral g reached. This helps the driver push the vehicle that little bit harder in corners.

Press the OK button while displaying the Lateral G mode, to reset the displayed maximum g value (Peak g).

VBOX LapTimer showing the Lateral G display.

This screen displays the current lateral g in the vehicle as a live display as well as the maximum lateral g reached. This helps the driver push the vehicle that little bit harder in corners.

Press the OK button while displaying the Lateral G mode, to reset the displayed maximum g value (Peak g).

VBOX LapTimer showing the Lateral G display.