Rohde amp schwarz hzo40 hzo41 differential probe set insulated rohde amp schwarz 5800039702 the rohde amp schwarz hzo40 is an insulated differential probe set which is best suited for measurements of high speed differential signals these signals are commonly used in digital and power applications and especially for serial buses like can the probe set can be powered by usb or battery and is compatible with all oscilloscopes with 50omega bnc inputs scopes without a 50omega inpu