08 - VB3iS VBOX Setup Digital I/O
The Digital I/O menu can be used to configure the digital input/output settings.
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Digital input
Configure whether the digital input is used as either a brake trigger or as a track marker.
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 VB3iS will calculate a 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 lap pulse. 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.
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Digital output
Defines the digital output of VB3iS.
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, VB3iS 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.
The polarity of the pulse can be changed to either a rising or falling pulse by selecting the marker next to the desired image.