A new line of differential probes helps users troubleshoot high-speed interfaces, which are appearing in almost all fields: in the wireless communications and electronics industry, in aerospace and defense, and in medical engineering. The new probes offer low noise (typically 3 mV) and a wide dynamic range. Their high DC input impedance of 1 M? and the low input capacitance (0.6 pF) ensure that the load on the DUT’s operating point remains low. The wide dynamic range (±5 V) even at high frequencies allows measurements on fast ground-referenced signals and prevents distortion. The probes can be connected to the company’s RTO and RTM oscilloscopes and spectrum and network analyzers by using the RT-ZA9 Probe Adapter.