Method for calibrating a device for measuring tracks

A method for calibrating a device for measuring tracks having at least one track-driveable track-measuring car associated with a lifting and lining device, and comprising track-position measurement sensors configured to measure a height position, a direction and a superelevation of rails of the track using a machine frame as a reference zero line, wherein a measuring-car lifting and lowering device is associated with the track-measuring car, said method comprising:

• providing a calibration device associated with the machine frame,
• lowering the track-measuring car, for the purpose of calibrating the track-position measurement sensors, from a parking position, in which the track-measuring car is lifted from the track, onto the track or into an intermediate position,
• moving calibration stops by an actuator from an idle position into a calibration position,
• raising and applying the track measuring car against the calibration stops,
• reading out resulting values of the track-position measurement sensors,
• reading the resulting values into the measurement system and
• storing the resulting values as calibration values, and
• lowering the track-measuring car onto the track.