CONNECTION INTERFACE FOR A MEASUREMENT PROBE

摘要

A connection interface between a coordinate positioning apparatus, such as a manual measurement arm, and a surface sensing device, such as a contact sensing rigid probe. The coordinate positioning apparatus is provided with at least one selection device, such as a set-up button, capable of being operated by a user. The connection interface has interface circuitry, a connection between said interface circuitry and circuitry of the coordinate positioning apparatus, a connection between said interface circuitry and circuitry of the surface sensing device. The interface circuitry has at least two modes of operation, a first mode in which operation of the at least one selection device creates an output signal, and a second mode, in which the selection device is isolated and wherein inputs received by the interface circuitry from the circuitry of the surface sensing device are output into the circuitry of the coordinate positioning apparatus as output signals which emulate the output signals from the selection device.