They are used to measure the S-parameters of highly-frequency cables.
These are values like insertion loss, return loss, impedance and others.
With suitable equipment we also are able to determine values like screening
attenuation quickly and precisely. In this case we can measure screens up to
140 dB. 140 dB is the upper limit of the best todays test equipment.
Meanwhile Transmedia owns 7 devices of the latest generation,
mostly by Rohde & Schwarz and HP.
Therefore we don’t need to change the measurement setups.