For the respective application (Ethernet, USB, CAN), standards specify a certain catalogue of requirements that the cables must fulfil in order to guarantee function in accordance with this standard. The physical parameters that have to be measured and the limit values that have to be complied with vary greatly for some bus systems.

At this point we will mention only a few that can be measured at S. For detailed questions about the respective tests, a personnel discussion is the preferred solution.

The following can be measured: ohmic resistance (conductor or conductor loop), capacitance, resistance and capacitance resistance, signal propagation time, difference of propagation time, crosstalk, insertion loss, characteristic impedance, return loss, asymmetric divergence, etc..