Keysight Agilent N5449A 500MHz High Impedance Adapter with N2873ACondition: Used Excellent condition, like new. Connect probes that require a high impedance input to the Infiniium V or 90000 X Q series oscilloscopes Input : 1 M AutoProbe I Output : 50 AutoProbe II The N5449A high impedance adapter allows connection of probes that require a high impedance input to the Infiniium V Series, 90000 X Series, 90000 Q Series, and Z Series oscilloscopes. The adapter allows you to use a high impedance passive probe, 1147B or