To use screen blanking, connect the Screen Blanking cable (p/n CA1300) to the Vehicle Dock RS-232 connector and to the a switch on the vehicle. Activate this switch electrically (for example, motion sensor) or mechanically (for example, pedal switch) when the vehicle is in motion.
The screen blanking feature makes use of the RS-232 port to monitor electrical relay closure. When enabled, the CTS/RTS pins of the RS-232 port are continuously monitored by the screen blanking application.
When the vehicle is in motion, the switch closes the circuit, allowing data packets to be sent or received through the RTS and CTS pins. The computer detects that the circuit is closed and turns off the screen. When the vehicle is not in motion, the switch opens the circuit, preventing data packets from being sent or received. The computer detects that the circuit is open and turns on the screen.
Open the Access Door.
Route the Screen Blanking Cable up through the bottom of the Vehicle Dock.
Remove the RS-232 connector cover.
Connect the cable to the RS-232 port on the inside of the Vehicle Dock.
Tighten the thumb screws to ensure proper water sealing.
Secure cable with cable ties.
Remove two screws securing the RS-232 access door on the back of the Vehicle Dock.
