Two 18 GHz electrical channels with 3.5 mm (m) connectors Characteristic rms noise:0.25mV(12.4GHzBW),0.5mV(18GHzBW) Maximum input signal:±2Vdc Two built-in step generators configurable for 1-port, 2-port common mode, or 2-port differential TDR or TDT measurements Built-in TDR/TDT calibration, user-selectable edge speed,