A new test bench for measurements of Nuclotron-based Ion Collider fAcility (NICA) stochastic cooling elements has been created at Joint Institute for Nuclear Research (JINR). The following measurements for NICA stochastic cooling pickups/kickers based on Ring-slot coupler structure has been provided: impedance dependence on azimuthal and longitudinal loop positions, electrical center position behavior as a function of frequency and standing wave ratio (SWR) of the kicker. The results of the listed measurements are given.