Passive Voltage Probe DC to 15MHz, 1X, 300V CAT II. The Tektronix P6101B is a Passive Voltage Probe for the most general purpose oscilloscopes with a bandwidth up to 15 MHz and 1 MOhm input impedance. Bandwidth: DC to 15 MHz Attenuation: 1X Input resistance: 1 MOhm Input capacitance: 100pF Max. rate voltage: 300 V rms, CAT II Cable length: 2 m Weight NET: 320 g (0.7 lb)