Tachograph integrity checker (TIC)

A test or diagnostic apparatus to detect fraudulent or unauthorised manipulation of a tachograph may be connected to the wiring of a vehicle between the vehicle unit / recording head and the impulse sender unit or KITAS sensor typically located on the vehicle gearbox. The device is intended to determine if any part of the device including the wiring has been altered. The device has three multiple position selection switches A, B, C, that comprise a 3 way 4 pole switch and two power supplies D, E. The device may measure and display the voltage difference existing between the vehicle unit and the KITAS sensor and may measure and detect the current flow to the KITAS impulse sensor. Voltage and current values may be shown on a dual display. The tachograph may be tested in the vehicle cab or may be removed and the components tested individually using a diode testing circuit. Modification or tampering with the components or wiring will cause deviations from expected voltage and current values ...