4.5 Digital I/O Menu

Brake trigger

Enabling this mode allows the Digital Input to be used with a brake trigger. Activation of the trigger will start the brake stop distance measurement, where the VBOX unit will calculate the Time and Distance for a Brake Trigger to 0 km/h test. 

Track marker

Enabling this mode allows the Digital Input to be used as a track marker. The input switch can be used to set a start/ finish line, set a separate finish line, set a split line, clear all virtual lines and perform a coldstart.

Set a start/finish line - Press and release of the input switch. GNSS speed must be greater than 5 km/h and the virtual line will be perpendicular to the direction of travel.

Set a separate finish line - Press and hold of the input switch for more than 5 seconds. GNSS speed must be greater than 5 km/h and the virtual line will be perpendicular to the direction of travel.

Set a split line - Double press of the input switch. GNSS speed must be greater than 5 km/h and the virtual line will be perpendicular to the direction of travel.

Clear all virtual lines - Short press followed by a longer press over 1.5 seconds.

Perform a coldstart - Grounding the Digital input whilst connecting to power.

Speed

The speed output is configured by changing the number of pulses per metre 
(90 pulses/m = 25 Hz per km/h as default).

Lap pulse

When this option is enabled, the VBOX unit will output a 5 V pulse for 1 second (by default) when a Start/Finish line is crossed. The duration of the pulse in seconds can be adjusted by entering a different value.

You can change the polarity of the pulse to either a rising or falling pulse by selecting the radio button next to the desired image.

Note: The Pulse duration can be a maximum of 50 seconds.