Device and method for checking a clock signal of a position measuring device

A method for monitoring a clock signal of a position measuring device, which is connected to sequential electronics via a data transmission channel, and the data transmission channel has a data line, via which data signals are transmittable from an interface unit of the position measuring device to an interface unit of the sequential electronics, comprising:

• generating a test pulse based on a time pattern of the clock signal by a pulse generation unit of the interface unit of the position measuring device;
• transmitting the test pulse via the data line to the interface unit of the sequential electronics;
• and
• measuring a pulse duration in the time pattern of the clock signal by a pulse measurement unit of the interface unit of the sequential electronics;
• and
• outputting, by the pulse measurement unit, a measured value representing the pulse duration to a control unit for evaluation.

A system, comprising:

• a position measuring device including an interface unit;
• sequential electronics including an interface unit;
• and
• a data transmission channel connecting the position measuring device and the sequential electronics, the data transmission channel including a data line adapted to transmit data signals from the interface unit of the position measuring device to the interface unit of the sequential electronics;
• wherein the interface unit of the position measuring device includes a pulse generation unit adapted to generate a test pulse based on a time pattern of a clock signal of the position measuring device;
• wherein the data line is adapted to transmit the test pulse to the interface unit of the sequential electronics;
• wherein the interface unit of the sequential electronics includes a pulse measurement unit adapted to measure a pulse duration of the test pulse in the time pattern of a clock signal of the sequential electronics and to output, to a control unit for evaluation, a measured value representing the pulse duration.